Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Routines providing a simple monitor for use on the PowerMac. |
| 3 | * |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 4 | * Copyright (C) 1996-2005 Paul Mackerras. |
Michael Ellerman | 47679283 | 2006-10-03 14:12:08 +1000 | [diff] [blame] | 5 | * Copyright (C) 2001 PPC64 Team, IBM Corp |
| 6 | * Copyrignt (C) 2006 Michael Ellerman, IBM Corp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * as published by the Free Software Foundation; either version |
| 11 | * 2 of the License, or (at your option) any later version. |
| 12 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/errno.h> |
| 14 | #include <linux/sched.h> |
| 15 | #include <linux/smp.h> |
| 16 | #include <linux/mm.h> |
| 17 | #include <linux/reboot.h> |
| 18 | #include <linux/delay.h> |
| 19 | #include <linux/kallsyms.h> |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 20 | #include <linux/kmsg_dump.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/cpumask.h> |
Paul Gortmaker | 4b16f8e | 2011-07-22 18:24:23 -0400 | [diff] [blame] | 22 | #include <linux/export.h> |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 23 | #include <linux/sysrq.h> |
Andrew Morton | 4694ca0 | 2005-11-13 16:06:50 -0800 | [diff] [blame] | 24 | #include <linux/interrupt.h> |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 25 | #include <linux/irq.h> |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 26 | #include <linux/bug.h> |
Anton Blanchard | a71d64b | 2014-08-05 14:55:00 +1000 | [diff] [blame] | 27 | #include <linux/nmi.h> |
Vincent Bernat | 05b981f | 2014-07-15 13:43:47 +0200 | [diff] [blame] | 28 | #include <linux/ctype.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #include <asm/ptrace.h> |
| 31 | #include <asm/string.h> |
| 32 | #include <asm/prom.h> |
| 33 | #include <asm/machdep.h> |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 34 | #include <asm/xmon.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <asm/processor.h> |
| 36 | #include <asm/pgtable.h> |
| 37 | #include <asm/mmu.h> |
| 38 | #include <asm/mmu_context.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <asm/cputable.h> |
| 40 | #include <asm/rtas.h> |
| 41 | #include <asm/sstep.h> |
Paul Mackerras | f583ffc | 2006-10-10 11:47:07 +1000 | [diff] [blame] | 42 | #include <asm/irq_regs.h> |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 43 | #include <asm/spu.h> |
| 44 | #include <asm/spu_priv1.h> |
Michael Neuling | c3b75bd | 2008-01-18 15:50:30 +1100 | [diff] [blame] | 45 | #include <asm/setjmp.h> |
Anton Vorontsov | 322b439 | 2008-12-17 10:08:55 +0000 | [diff] [blame] | 46 | #include <asm/reg.h> |
David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 47 | #include <asm/debug.h> |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 48 | #include <asm/hw_breakpoint.h> |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 49 | |
Andrew Donnellan | fde93a0 | 2016-02-09 18:17:49 +1100 | [diff] [blame] | 50 | #include <asm/opal.h> |
| 51 | #include <asm/firmware.h> |
| 52 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 53 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <asm/hvcall.h> |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 55 | #include <asm/paca.h> |
| 56 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Anshuman Khandual | 1ad7d70 | 2014-11-28 10:06:42 +0530 | [diff] [blame] | 58 | #if defined(CONFIG_PPC_SPLPAR) |
| 59 | #include <asm/plpar_wrappers.h> |
| 60 | #else |
| 61 | static inline long plapr_set_ciabr(unsigned long ciabr) {return 0; }; |
| 62 | #endif |
| 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #include "nonstdio.h" |
Michael Ellerman | e042604 | 2006-11-23 00:46:45 +0100 | [diff] [blame] | 65 | #include "dis-asm.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #ifdef CONFIG_SMP |
Michael Ellerman | 1c8950f | 2008-05-08 14:27:17 +1000 | [diff] [blame] | 68 | static cpumask_t cpus_in_xmon = CPU_MASK_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | static unsigned long xmon_taken = 1; |
| 70 | static int xmon_owner; |
| 71 | static int xmon_gate; |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 72 | #else |
| 73 | #define xmon_owner 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | #endif /* CONFIG_SMP */ |
| 75 | |
Anton Blanchard | 5be3492 | 2010-01-12 00:50:14 +0000 | [diff] [blame] | 76 | static unsigned long in_xmon __read_mostly = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
| 78 | static unsigned long adrs; |
| 79 | static int size = 1; |
| 80 | #define MAX_DUMP (128 * 1024) |
| 81 | static unsigned long ndump = 64; |
| 82 | static unsigned long nidump = 16; |
| 83 | static unsigned long ncsum = 4096; |
| 84 | static int termch; |
| 85 | static char tmpstr[128]; |
| 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | static long bus_error_jmp[JMP_BUF_LEN]; |
| 88 | static int catch_memory_errors; |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 89 | static int catch_spr_faults; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | static long *xmon_fault_jmp[NR_CPUS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
| 92 | /* Breakpoint stuff */ |
| 93 | struct bpt { |
| 94 | unsigned long address; |
| 95 | unsigned int instr[2]; |
| 96 | atomic_t ref_count; |
| 97 | int enabled; |
| 98 | unsigned long pad; |
| 99 | }; |
| 100 | |
| 101 | /* Bits in bpt.enabled */ |
Michael Ellerman | abb90ee | 2014-12-01 16:54:13 +1100 | [diff] [blame] | 102 | #define BP_CIABR 1 |
| 103 | #define BP_TRAP 2 |
| 104 | #define BP_DABR 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | #define NBPTS 256 |
| 107 | static struct bpt bpts[NBPTS]; |
| 108 | static struct bpt dabr; |
| 109 | static struct bpt *iabr; |
| 110 | static unsigned bpinstr = 0x7fe00008; /* trap */ |
| 111 | |
| 112 | #define BP_NUM(bp) ((bp) - bpts + 1) |
| 113 | |
| 114 | /* Prototypes */ |
| 115 | static int cmds(struct pt_regs *); |
| 116 | static int mread(unsigned long, void *, int); |
| 117 | static int mwrite(unsigned long, void *, int); |
| 118 | static int handle_fault(struct pt_regs *); |
| 119 | static void byterev(unsigned char *, int); |
| 120 | static void memex(void); |
| 121 | static int bsesc(void); |
| 122 | static void dump(void); |
| 123 | static void prdump(unsigned long, long); |
| 124 | static int ppc_inst_dump(unsigned long, long, int); |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 125 | static void dump_log_buf(void); |
Andrew Donnellan | fde93a0 | 2016-02-09 18:17:49 +1100 | [diff] [blame] | 126 | |
| 127 | #ifdef CONFIG_PPC_POWERNV |
| 128 | static void dump_opal_msglog(void); |
| 129 | #else |
| 130 | static inline void dump_opal_msglog(void) |
| 131 | { |
| 132 | printf("Machine is not running OPAL firmware.\n"); |
| 133 | } |
| 134 | #endif |
| 135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | static void backtrace(struct pt_regs *); |
| 137 | static void excprint(struct pt_regs *); |
| 138 | static void prregs(struct pt_regs *); |
| 139 | static void memops(int); |
| 140 | static void memlocate(void); |
| 141 | static void memzcan(void); |
| 142 | static void memdiffs(unsigned char *, unsigned char *, unsigned, unsigned); |
| 143 | int skipbl(void); |
| 144 | int scanhex(unsigned long *valp); |
| 145 | static void scannl(void); |
| 146 | static int hexdigit(int); |
| 147 | void getstring(char *, int); |
| 148 | static void flush_input(void); |
| 149 | static int inchar(void); |
| 150 | static void take_input(char *); |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 151 | static int read_spr(int, unsigned long *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | static void write_spr(int, unsigned long); |
| 153 | static void super_regs(void); |
| 154 | static void remove_bpts(void); |
| 155 | static void insert_bpts(void); |
| 156 | static void remove_cpu_bpts(void); |
| 157 | static void insert_cpu_bpts(void); |
| 158 | static struct bpt *at_breakpoint(unsigned long pc); |
| 159 | static struct bpt *in_breakpoint_table(unsigned long pc, unsigned long *offp); |
| 160 | static int do_step(struct pt_regs *); |
| 161 | static void bpt_cmds(void); |
| 162 | static void cacheflush(void); |
| 163 | static int cpu_cmd(void); |
| 164 | static void csum(void); |
| 165 | static void bootcmds(void); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 166 | static void proccall(void); |
Douglas Miller | 6dfb540 | 2015-11-23 09:01:15 -0600 | [diff] [blame] | 167 | static void show_tasks(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | void dump_segments(void); |
| 169 | static void symbol_lookup(void); |
Olaf Hering | 26c8af5 | 2006-09-08 16:29:21 +0200 | [diff] [blame] | 170 | static void xmon_show_stack(unsigned long sp, unsigned long lr, |
| 171 | unsigned long pc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | static void xmon_print_symbol(unsigned long address, const char *mid, |
| 173 | const char *after); |
| 174 | static const char *getvecname(unsigned long vec); |
| 175 | |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 176 | static int do_spu_cmd(void); |
| 177 | |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 178 | #ifdef CONFIG_44x |
| 179 | static void dump_tlb_44x(void); |
| 180 | #endif |
Benjamin Herrenschmidt | 0324715 | 2010-07-09 15:34:50 +1000 | [diff] [blame] | 181 | #ifdef CONFIG_PPC_BOOK3E |
| 182 | static void dump_tlb_book3e(void); |
| 183 | #endif |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 184 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 185 | static int xmon_no_auto_backtrace; |
Olaf Hering | 26c8af5 | 2006-09-08 16:29:21 +0200 | [diff] [blame] | 186 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 187 | #ifdef CONFIG_PPC64 |
| 188 | #define REG "%.16lx" |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 189 | #else |
| 190 | #define REG "%.8lx" |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 191 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
Philippe Bergheaud | 72eceef | 2013-12-02 10:10:12 +0100 | [diff] [blame] | 193 | #ifdef __LITTLE_ENDIAN__ |
| 194 | #define GETWORD(v) (((v)[3] << 24) + ((v)[2] << 16) + ((v)[1] << 8) + (v)[0]) |
| 195 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | #define GETWORD(v) (((v)[0] << 24) + ((v)[1] << 16) + ((v)[2] << 8) + (v)[3]) |
Philippe Bergheaud | 72eceef | 2013-12-02 10:10:12 +0100 | [diff] [blame] | 197 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | static char *help_string = "\ |
| 200 | Commands:\n\ |
| 201 | b show breakpoints\n\ |
| 202 | bd set data breakpoint\n\ |
| 203 | bi set instruction breakpoint\n\ |
| 204 | bc clear breakpoint\n" |
| 205 | #ifdef CONFIG_SMP |
| 206 | "\ |
| 207 | c print cpus stopped in xmon\n\ |
| 208 | c# try to switch to cpu number h (in hex)\n" |
| 209 | #endif |
| 210 | "\ |
| 211 | C checksum\n\ |
| 212 | d dump bytes\n\ |
| 213 | di dump instructions\n\ |
| 214 | df dump float values\n\ |
| 215 | dd dump double values\n\ |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 216 | dl dump the kernel log buffer\n" |
Andrew Donnellan | fde93a0 | 2016-02-09 18:17:49 +1100 | [diff] [blame] | 217 | #ifdef CONFIG_PPC_POWERNV |
| 218 | "\ |
| 219 | do dump the OPAL message log\n" |
| 220 | #endif |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 221 | #ifdef CONFIG_PPC64 |
| 222 | "\ |
| 223 | dp[#] dump paca for current cpu, or cpu #\n\ |
| 224 | dpa dump paca for all possible cpus\n" |
| 225 | #endif |
| 226 | "\ |
Olaf Hering | 7e5b593 | 2006-03-08 20:40:28 +0100 | [diff] [blame] | 227 | dr dump stream of raw bytes\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | e print exception information\n\ |
| 229 | f flush cache\n\ |
| 230 | la lookup symbol+offset of specified address\n\ |
| 231 | ls lookup address of specified symbol\n\ |
| 232 | m examine/change memory\n\ |
| 233 | mm move a block of memory\n\ |
| 234 | ms set a block of memory\n\ |
| 235 | md compare two blocks of memory\n\ |
| 236 | ml locate a block of memory\n\ |
| 237 | mz zero a block of memory\n\ |
| 238 | mi show information about memory allocation\n\ |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 239 | p call a procedure\n\ |
Douglas Miller | 6dfb540 | 2015-11-23 09:01:15 -0600 | [diff] [blame] | 240 | P list processes/tasks\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | r print registers\n\ |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 242 | s single step\n" |
Arnd Bergmann | e055595 | 2006-11-27 19:18:55 +0100 | [diff] [blame] | 243 | #ifdef CONFIG_SPU_BASE |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 244 | " ss stop execution on all spus\n\ |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 245 | sr restore execution on stopped spus\n\ |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 246 | sf # dump spu fields for spu # (in hex)\n\ |
Michael Ellerman | c99176a | 2007-02-26 18:14:06 +0900 | [diff] [blame] | 247 | sd # dump spu local store for spu # (in hex)\n\ |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 248 | sdi # disassemble spu local store for spu # (in hex)\n" |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 249 | #endif |
| 250 | " S print special registers\n\ |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 251 | Sa print all SPRs\n\ |
| 252 | Sr # read SPR #\n\ |
| 253 | Sw #v write v to SPR #\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | t print backtrace\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | x exit monitor and recover\n\ |
Andrew Donnellan | 2e34057 | 2016-01-27 11:29:44 +1100 | [diff] [blame] | 256 | X exit monitor and don't recover\n" |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 257 | #if defined(CONFIG_PPC64) && !defined(CONFIG_PPC_BOOK3E) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 258 | " u dump segment table or SLB\n" |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 259 | #elif defined(CONFIG_PPC_STD_MMU_32) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 260 | " u dump segment registers\n" |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 261 | #elif defined(CONFIG_44x) || defined(CONFIG_PPC_BOOK3E) |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 262 | " u dump TLB\n" |
| 263 | #endif |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 264 | " ? help\n" |
Sam bobroff | 0c23a88 | 2015-10-08 11:50:24 +1100 | [diff] [blame] | 265 | " # n limit output to n lines per page (for dp, dpa, dl)\n" |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 266 | " zr reboot\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | zh halt\n" |
| 268 | ; |
| 269 | |
| 270 | static struct pt_regs *xmon_regs; |
| 271 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 272 | static inline void sync(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | { |
| 274 | asm volatile("sync; isync"); |
| 275 | } |
| 276 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 277 | static inline void store_inst(void *p) |
| 278 | { |
| 279 | asm volatile ("dcbst 0,%0; sync; icbi 0,%0; isync" : : "r" (p)); |
| 280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 282 | static inline void cflush(void *p) |
| 283 | { |
| 284 | asm volatile ("dcbf 0,%0; icbi 0,%0" : : "r" (p)); |
| 285 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 287 | static inline void cinval(void *p) |
| 288 | { |
| 289 | asm volatile ("dcbi 0,%0; icbi 0,%0" : : "r" (p)); |
| 290 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
Anshuman Khandual | 1ad7d70 | 2014-11-28 10:06:42 +0530 | [diff] [blame] | 292 | /** |
| 293 | * write_ciabr() - write the CIABR SPR |
| 294 | * @ciabr: The value to write. |
| 295 | * |
| 296 | * This function writes a value to the CIARB register either directly |
| 297 | * through mtspr instruction if the kernel is in HV privilege mode or |
| 298 | * call a hypervisor function to achieve the same in case the kernel |
| 299 | * is in supervisor privilege mode. |
| 300 | */ |
| 301 | static void write_ciabr(unsigned long ciabr) |
| 302 | { |
| 303 | if (!cpu_has_feature(CPU_FTR_ARCH_207S)) |
| 304 | return; |
| 305 | |
| 306 | if (cpu_has_feature(CPU_FTR_HVMODE)) { |
| 307 | mtspr(SPRN_CIABR, ciabr); |
| 308 | return; |
| 309 | } |
| 310 | plapr_set_ciabr(ciabr); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * set_ciabr() - set the CIABR |
| 315 | * @addr: The value to set. |
| 316 | * |
| 317 | * This function sets the correct privilege value into the the HW |
| 318 | * breakpoint address before writing it up in the CIABR register. |
| 319 | */ |
| 320 | static void set_ciabr(unsigned long addr) |
| 321 | { |
| 322 | addr &= ~CIABR_PRIV; |
| 323 | |
| 324 | if (cpu_has_feature(CPU_FTR_HVMODE)) |
| 325 | addr |= CIABR_PRIV_HYPER; |
| 326 | else |
| 327 | addr |= CIABR_PRIV_SUPER; |
| 328 | write_ciabr(addr); |
| 329 | } |
| 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | /* |
| 332 | * Disable surveillance (the service processor watchdog function) |
| 333 | * while we are in xmon. |
| 334 | * XXX we should re-enable it when we leave. :) |
| 335 | */ |
| 336 | #define SURVEILLANCE_TOKEN 9000 |
| 337 | |
| 338 | static inline void disable_surveillance(void) |
| 339 | { |
| 340 | #ifdef CONFIG_PPC_PSERIES |
| 341 | /* Since this can't be a module, args should end up below 4GB. */ |
| 342 | static struct rtas_args args; |
Michael Ellerman | 08eb105 | 2015-11-24 22:26:09 +1100 | [diff] [blame] | 343 | int token; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
| 345 | /* |
| 346 | * At this point we have got all the cpus we can into |
| 347 | * xmon, so there is hopefully no other cpu calling RTAS |
| 348 | * at the moment, even though we don't take rtas.lock. |
| 349 | * If we did try to take rtas.lock there would be a |
| 350 | * real possibility of deadlock. |
| 351 | */ |
Michael Ellerman | 08eb105 | 2015-11-24 22:26:09 +1100 | [diff] [blame] | 352 | token = rtas_token("set-indicator"); |
| 353 | if (token == RTAS_UNKNOWN_SERVICE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | return; |
Michael Ellerman | 08eb105 | 2015-11-24 22:26:09 +1100 | [diff] [blame] | 355 | |
| 356 | rtas_call_unlocked(&args, token, 3, 1, NULL, SURVEILLANCE_TOKEN, 0, 0); |
| 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | #endif /* CONFIG_PPC_PSERIES */ |
| 359 | } |
| 360 | |
| 361 | #ifdef CONFIG_SMP |
| 362 | static int xmon_speaker; |
| 363 | |
| 364 | static void get_output_lock(void) |
| 365 | { |
| 366 | int me = smp_processor_id() + 0x100; |
| 367 | int last_speaker = 0, prev; |
| 368 | long timeout; |
| 369 | |
| 370 | if (xmon_speaker == me) |
| 371 | return; |
Michael Ellerman | 730efb6 | 2013-12-23 23:46:04 +1100 | [diff] [blame] | 372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | for (;;) { |
Michael Ellerman | 730efb6 | 2013-12-23 23:46:04 +1100 | [diff] [blame] | 374 | last_speaker = cmpxchg(&xmon_speaker, 0, me); |
| 375 | if (last_speaker == 0) |
| 376 | return; |
| 377 | |
Michael Ellerman | 1507589 | 2013-12-23 23:46:05 +1100 | [diff] [blame] | 378 | /* |
| 379 | * Wait a full second for the lock, we might be on a slow |
| 380 | * console, but check every 100us. |
| 381 | */ |
| 382 | timeout = 10000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | while (xmon_speaker == last_speaker) { |
Michael Ellerman | 1507589 | 2013-12-23 23:46:05 +1100 | [diff] [blame] | 384 | if (--timeout > 0) { |
| 385 | udelay(100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | continue; |
Michael Ellerman | 1507589 | 2013-12-23 23:46:05 +1100 | [diff] [blame] | 387 | } |
| 388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | /* hostile takeover */ |
| 390 | prev = cmpxchg(&xmon_speaker, last_speaker, me); |
| 391 | if (prev == last_speaker) |
| 392 | return; |
| 393 | break; |
| 394 | } |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | static void release_output_lock(void) |
| 399 | { |
| 400 | xmon_speaker = 0; |
| 401 | } |
Michael Ellerman | 1c8950f | 2008-05-08 14:27:17 +1000 | [diff] [blame] | 402 | |
| 403 | int cpus_are_in_xmon(void) |
| 404 | { |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 405 | return !cpumask_empty(&cpus_in_xmon); |
Michael Ellerman | 1c8950f | 2008-05-08 14:27:17 +1000 | [diff] [blame] | 406 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | #endif |
| 408 | |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 409 | static inline int unrecoverable_excp(struct pt_regs *regs) |
| 410 | { |
Jimi Xenidis | 08f6d6a | 2011-09-29 12:05:28 +0000 | [diff] [blame] | 411 | #if defined(CONFIG_4xx) || defined(CONFIG_PPC_BOOK3E) |
Jimi Xenidis | 66857b3 | 2011-09-23 05:40:46 +0000 | [diff] [blame] | 412 | /* We have no MSR_RI bit on 4xx or Book3e, so we simply return false */ |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 413 | return 0; |
| 414 | #else |
| 415 | return ((regs->msr & MSR_RI) == 0); |
| 416 | #endif |
| 417 | } |
| 418 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 419 | static int xmon_core(struct pt_regs *regs, int fromipi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | { |
| 421 | int cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | struct bpt *bp; |
| 423 | long recurse_jmp[JMP_BUF_LEN]; |
| 424 | unsigned long offset; |
Anton Blanchard | f13659e | 2007-03-21 01:48:34 +1100 | [diff] [blame] | 425 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | #ifdef CONFIG_SMP |
| 427 | int cpu; |
| 428 | int secondary; |
| 429 | unsigned long timeout; |
| 430 | #endif |
| 431 | |
Anton Blanchard | f13659e | 2007-03-21 01:48:34 +1100 | [diff] [blame] | 432 | local_irq_save(flags); |
Anton Blanchard | a71d64b | 2014-08-05 14:55:00 +1000 | [diff] [blame] | 433 | hard_irq_disable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | |
| 435 | bp = in_breakpoint_table(regs->nip, &offset); |
| 436 | if (bp != NULL) { |
| 437 | regs->nip = bp->address + offset; |
| 438 | atomic_dec(&bp->ref_count); |
| 439 | } |
| 440 | |
| 441 | remove_cpu_bpts(); |
| 442 | |
| 443 | #ifdef CONFIG_SMP |
| 444 | cpu = smp_processor_id(); |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 445 | if (cpumask_test_cpu(cpu, &cpus_in_xmon)) { |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 446 | /* |
| 447 | * We catch SPR read/write faults here because the 0x700, 0xf60 |
| 448 | * etc. handlers don't call debugger_fault_handler(). |
| 449 | */ |
| 450 | if (catch_spr_faults) |
| 451 | longjmp(bus_error_jmp, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | get_output_lock(); |
| 453 | excprint(regs); |
| 454 | printf("cpu 0x%x: Exception %lx %s in xmon, " |
| 455 | "returning to main loop\n", |
| 456 | cpu, regs->trap, getvecname(TRAP(regs))); |
Haren Myneni | 5cb4cc0 | 2005-08-03 15:08:18 +1000 | [diff] [blame] | 457 | release_output_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | longjmp(xmon_fault_jmp[cpu], 1); |
| 459 | } |
| 460 | |
| 461 | if (setjmp(recurse_jmp) != 0) { |
| 462 | if (!in_xmon || !xmon_gate) { |
Haren Myneni | 5cb4cc0 | 2005-08-03 15:08:18 +1000 | [diff] [blame] | 463 | get_output_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | printf("xmon: WARNING: bad recursive fault " |
| 465 | "on cpu 0x%x\n", cpu); |
Haren Myneni | 5cb4cc0 | 2005-08-03 15:08:18 +1000 | [diff] [blame] | 466 | release_output_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | goto waiting; |
| 468 | } |
| 469 | secondary = !(xmon_taken && cpu == xmon_owner); |
| 470 | goto cmdloop; |
| 471 | } |
| 472 | |
| 473 | xmon_fault_jmp[cpu] = recurse_jmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | bp = NULL; |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 476 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) == (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | bp = at_breakpoint(regs->nip); |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 478 | if (bp || unrecoverable_excp(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | fromipi = 0; |
| 480 | |
| 481 | if (!fromipi) { |
| 482 | get_output_lock(); |
| 483 | excprint(regs); |
| 484 | if (bp) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 485 | printf("cpu 0x%x stopped at breakpoint 0x%lx (", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | cpu, BP_NUM(bp)); |
| 487 | xmon_print_symbol(regs->nip, " ", ")\n"); |
| 488 | } |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 489 | if (unrecoverable_excp(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | printf("WARNING: exception is not recoverable, " |
| 491 | "can't continue\n"); |
| 492 | release_output_lock(); |
| 493 | } |
| 494 | |
Michael Ellerman | d2b496e | 2013-12-23 23:46:06 +1100 | [diff] [blame] | 495 | cpumask_set_cpu(cpu, &cpus_in_xmon); |
| 496 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | waiting: |
| 498 | secondary = 1; |
| 499 | while (secondary && !xmon_gate) { |
| 500 | if (in_xmon == 0) { |
| 501 | if (fromipi) |
| 502 | goto leave; |
| 503 | secondary = test_and_set_bit(0, &in_xmon); |
| 504 | } |
| 505 | barrier(); |
| 506 | } |
| 507 | |
| 508 | if (!secondary && !xmon_gate) { |
| 509 | /* we are the first cpu to come in */ |
| 510 | /* interrupt other cpu(s) */ |
| 511 | int ncpus = num_online_cpus(); |
| 512 | |
| 513 | xmon_owner = cpu; |
| 514 | mb(); |
| 515 | if (ncpus > 1) { |
Milton Miller | e047637 | 2011-05-10 19:29:06 +0000 | [diff] [blame] | 516 | smp_send_debugger_break(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | /* wait for other cpus to come in */ |
| 518 | for (timeout = 100000000; timeout != 0; --timeout) { |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 519 | if (cpumask_weight(&cpus_in_xmon) >= ncpus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | break; |
| 521 | barrier(); |
| 522 | } |
| 523 | } |
| 524 | remove_bpts(); |
| 525 | disable_surveillance(); |
| 526 | /* for breakpoint or single step, print the current instr. */ |
| 527 | if (bp || TRAP(regs) == 0xd00) |
| 528 | ppc_inst_dump(regs->nip, 1, 0); |
| 529 | printf("enter ? for help\n"); |
| 530 | mb(); |
| 531 | xmon_gate = 1; |
| 532 | barrier(); |
| 533 | } |
| 534 | |
| 535 | cmdloop: |
| 536 | while (in_xmon) { |
| 537 | if (secondary) { |
| 538 | if (cpu == xmon_owner) { |
| 539 | if (!test_and_set_bit(0, &xmon_taken)) { |
| 540 | secondary = 0; |
| 541 | continue; |
| 542 | } |
| 543 | /* missed it */ |
| 544 | while (cpu == xmon_owner) |
| 545 | barrier(); |
| 546 | } |
| 547 | barrier(); |
| 548 | } else { |
| 549 | cmd = cmds(regs); |
| 550 | if (cmd != 0) { |
| 551 | /* exiting xmon */ |
| 552 | insert_bpts(); |
| 553 | xmon_gate = 0; |
| 554 | wmb(); |
| 555 | in_xmon = 0; |
| 556 | break; |
| 557 | } |
| 558 | /* have switched to some other cpu */ |
| 559 | secondary = 1; |
| 560 | } |
| 561 | } |
| 562 | leave: |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 563 | cpumask_clear_cpu(cpu, &cpus_in_xmon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | xmon_fault_jmp[cpu] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | #else |
| 566 | /* UP is simple... */ |
| 567 | if (in_xmon) { |
| 568 | printf("Exception %lx %s in xmon, returning to main loop\n", |
| 569 | regs->trap, getvecname(TRAP(regs))); |
| 570 | longjmp(xmon_fault_jmp[0], 1); |
| 571 | } |
| 572 | if (setjmp(recurse_jmp) == 0) { |
| 573 | xmon_fault_jmp[0] = recurse_jmp; |
| 574 | in_xmon = 1; |
| 575 | |
| 576 | excprint(regs); |
| 577 | bp = at_breakpoint(regs->nip); |
| 578 | if (bp) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 579 | printf("Stopped at breakpoint %lx (", BP_NUM(bp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | xmon_print_symbol(regs->nip, " ", ")\n"); |
| 581 | } |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 582 | if (unrecoverable_excp(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | printf("WARNING: exception is not recoverable, " |
| 584 | "can't continue\n"); |
| 585 | remove_bpts(); |
| 586 | disable_surveillance(); |
| 587 | /* for breakpoint or single step, print the current instr. */ |
| 588 | if (bp || TRAP(regs) == 0xd00) |
| 589 | ppc_inst_dump(regs->nip, 1, 0); |
| 590 | printf("enter ? for help\n"); |
| 591 | } |
| 592 | |
| 593 | cmd = cmds(regs); |
| 594 | |
| 595 | insert_bpts(); |
| 596 | in_xmon = 0; |
| 597 | #endif |
| 598 | |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 599 | #ifdef CONFIG_BOOKE |
| 600 | if (regs->msr & MSR_DE) { |
| 601 | bp = at_breakpoint(regs->nip); |
| 602 | if (bp != NULL) { |
| 603 | regs->nip = (unsigned long) &bp->instr[0]; |
| 604 | atomic_inc(&bp->ref_count); |
| 605 | } |
| 606 | } |
| 607 | #else |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 608 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) == (MSR_IR|MSR_64BIT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | bp = at_breakpoint(regs->nip); |
| 610 | if (bp != NULL) { |
| 611 | int stepped = emulate_step(regs, bp->instr[0]); |
| 612 | if (stepped == 0) { |
| 613 | regs->nip = (unsigned long) &bp->instr[0]; |
| 614 | atomic_inc(&bp->ref_count); |
| 615 | } else if (stepped < 0) { |
| 616 | printf("Couldn't single-step %s instruction\n", |
| 617 | (IS_RFID(bp->instr[0])? "rfid": "mtmsrd")); |
| 618 | } |
| 619 | } |
| 620 | } |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 621 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | insert_cpu_bpts(); |
| 623 | |
Anton Blanchard | a71d64b | 2014-08-05 14:55:00 +1000 | [diff] [blame] | 624 | touch_nmi_watchdog(); |
Anton Blanchard | f13659e | 2007-03-21 01:48:34 +1100 | [diff] [blame] | 625 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | |
Paul Mackerras | 0a730ae | 2006-10-03 21:32:49 +1000 | [diff] [blame] | 627 | return cmd != 'X' && cmd != EOF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | } |
| 629 | |
| 630 | int xmon(struct pt_regs *excp) |
| 631 | { |
| 632 | struct pt_regs regs; |
| 633 | |
| 634 | if (excp == NULL) { |
Anton Vorontsov | 322b439 | 2008-12-17 10:08:55 +0000 | [diff] [blame] | 635 | ppc_save_regs(®s); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | excp = ®s; |
| 637 | } |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | return xmon_core(excp, 0); |
| 640 | } |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 641 | EXPORT_SYMBOL(xmon); |
| 642 | |
Paul Mackerras | f583ffc | 2006-10-10 11:47:07 +1000 | [diff] [blame] | 643 | irqreturn_t xmon_irq(int irq, void *d) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 644 | { |
| 645 | unsigned long flags; |
| 646 | local_irq_save(flags); |
| 647 | printf("Keyboard interrupt\n"); |
Paul Mackerras | f583ffc | 2006-10-10 11:47:07 +1000 | [diff] [blame] | 648 | xmon(get_irq_regs()); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 649 | local_irq_restore(flags); |
| 650 | return IRQ_HANDLED; |
| 651 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 653 | static int xmon_bpt(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | { |
| 655 | struct bpt *bp; |
| 656 | unsigned long offset; |
| 657 | |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 658 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) != (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | return 0; |
| 660 | |
| 661 | /* Are we at the trap at bp->instr[1] for some bp? */ |
| 662 | bp = in_breakpoint_table(regs->nip, &offset); |
| 663 | if (bp != NULL && offset == 4) { |
| 664 | regs->nip = bp->address + 4; |
| 665 | atomic_dec(&bp->ref_count); |
| 666 | return 1; |
| 667 | } |
| 668 | |
| 669 | /* Are we at a breakpoint? */ |
| 670 | bp = at_breakpoint(regs->nip); |
| 671 | if (!bp) |
| 672 | return 0; |
| 673 | |
| 674 | xmon_core(regs, 0); |
| 675 | |
| 676 | return 1; |
| 677 | } |
| 678 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 679 | static int xmon_sstep(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | { |
| 681 | if (user_mode(regs)) |
| 682 | return 0; |
| 683 | xmon_core(regs, 0); |
| 684 | return 1; |
| 685 | } |
| 686 | |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 687 | static int xmon_break_match(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | { |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 689 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) != (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | return 0; |
Anton Blanchard | fd9648d | 2005-09-10 16:01:11 +1000 | [diff] [blame] | 691 | if (dabr.enabled == 0) |
| 692 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | xmon_core(regs, 0); |
| 694 | return 1; |
| 695 | } |
| 696 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 697 | static int xmon_iabr_match(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | { |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 699 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) != (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | return 0; |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 701 | if (iabr == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | return 0; |
| 703 | xmon_core(regs, 0); |
| 704 | return 1; |
| 705 | } |
| 706 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 707 | static int xmon_ipi(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | { |
| 709 | #ifdef CONFIG_SMP |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 710 | if (in_xmon && !cpumask_test_cpu(smp_processor_id(), &cpus_in_xmon)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | xmon_core(regs, 1); |
| 712 | #endif |
| 713 | return 0; |
| 714 | } |
| 715 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 716 | static int xmon_fault_handler(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | { |
| 718 | struct bpt *bp; |
| 719 | unsigned long offset; |
| 720 | |
| 721 | if (in_xmon && catch_memory_errors) |
| 722 | handle_fault(regs); /* doesn't return */ |
| 723 | |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 724 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) == (MSR_IR|MSR_64BIT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | bp = in_breakpoint_table(regs->nip, &offset); |
| 726 | if (bp != NULL) { |
| 727 | regs->nip = bp->address + offset; |
| 728 | atomic_dec(&bp->ref_count); |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | return 0; |
| 733 | } |
| 734 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | static struct bpt *at_breakpoint(unsigned long pc) |
| 736 | { |
| 737 | int i; |
| 738 | struct bpt *bp; |
| 739 | |
| 740 | bp = bpts; |
| 741 | for (i = 0; i < NBPTS; ++i, ++bp) |
| 742 | if (bp->enabled && pc == bp->address) |
| 743 | return bp; |
| 744 | return NULL; |
| 745 | } |
| 746 | |
| 747 | static struct bpt *in_breakpoint_table(unsigned long nip, unsigned long *offp) |
| 748 | { |
| 749 | unsigned long off; |
| 750 | |
| 751 | off = nip - (unsigned long) bpts; |
| 752 | if (off >= sizeof(bpts)) |
| 753 | return NULL; |
| 754 | off %= sizeof(struct bpt); |
| 755 | if (off != offsetof(struct bpt, instr[0]) |
| 756 | && off != offsetof(struct bpt, instr[1])) |
| 757 | return NULL; |
| 758 | *offp = off - offsetof(struct bpt, instr[0]); |
| 759 | return (struct bpt *) (nip - off); |
| 760 | } |
| 761 | |
| 762 | static struct bpt *new_breakpoint(unsigned long a) |
| 763 | { |
| 764 | struct bpt *bp; |
| 765 | |
| 766 | a &= ~3UL; |
| 767 | bp = at_breakpoint(a); |
| 768 | if (bp) |
| 769 | return bp; |
| 770 | |
| 771 | for (bp = bpts; bp < &bpts[NBPTS]; ++bp) { |
| 772 | if (!bp->enabled && atomic_read(&bp->ref_count) == 0) { |
| 773 | bp->address = a; |
| 774 | bp->instr[1] = bpinstr; |
| 775 | store_inst(&bp->instr[1]); |
| 776 | return bp; |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | printf("Sorry, no free breakpoints. Please clear one first.\n"); |
| 781 | return NULL; |
| 782 | } |
| 783 | |
| 784 | static void insert_bpts(void) |
| 785 | { |
| 786 | int i; |
| 787 | struct bpt *bp; |
| 788 | |
| 789 | bp = bpts; |
| 790 | for (i = 0; i < NBPTS; ++i, ++bp) { |
Michael Ellerman | abb90ee | 2014-12-01 16:54:13 +1100 | [diff] [blame] | 791 | if ((bp->enabled & (BP_TRAP|BP_CIABR)) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | continue; |
| 793 | if (mread(bp->address, &bp->instr[0], 4) != 4) { |
| 794 | printf("Couldn't read instruction at %lx, " |
| 795 | "disabling breakpoint there\n", bp->address); |
| 796 | bp->enabled = 0; |
| 797 | continue; |
| 798 | } |
| 799 | if (IS_MTMSRD(bp->instr[0]) || IS_RFID(bp->instr[0])) { |
| 800 | printf("Breakpoint at %lx is on an mtmsrd or rfid " |
| 801 | "instruction, disabling it\n", bp->address); |
| 802 | bp->enabled = 0; |
| 803 | continue; |
| 804 | } |
| 805 | store_inst(&bp->instr[0]); |
Michael Ellerman | abb90ee | 2014-12-01 16:54:13 +1100 | [diff] [blame] | 806 | if (bp->enabled & BP_CIABR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | continue; |
| 808 | if (mwrite(bp->address, &bpinstr, 4) != 4) { |
| 809 | printf("Couldn't write instruction at %lx, " |
| 810 | "disabling breakpoint there\n", bp->address); |
| 811 | bp->enabled &= ~BP_TRAP; |
| 812 | continue; |
| 813 | } |
| 814 | store_inst((void *)bp->address); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | static void insert_cpu_bpts(void) |
| 819 | { |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 820 | struct arch_hw_breakpoint brk; |
| 821 | |
| 822 | if (dabr.enabled) { |
| 823 | brk.address = dabr.address; |
| 824 | brk.type = (dabr.enabled & HW_BRK_TYPE_DABR) | HW_BRK_TYPE_PRIV_ALL; |
| 825 | brk.len = 8; |
Paul Gortmaker | 21f5850 | 2014-04-29 15:25:17 -0400 | [diff] [blame] | 826 | __set_breakpoint(&brk); |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 827 | } |
Anshuman Khandual | 1ad7d70 | 2014-11-28 10:06:42 +0530 | [diff] [blame] | 828 | |
| 829 | if (iabr) |
| 830 | set_ciabr(iabr->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | } |
| 832 | |
| 833 | static void remove_bpts(void) |
| 834 | { |
| 835 | int i; |
| 836 | struct bpt *bp; |
| 837 | unsigned instr; |
| 838 | |
| 839 | bp = bpts; |
| 840 | for (i = 0; i < NBPTS; ++i, ++bp) { |
Michael Ellerman | abb90ee | 2014-12-01 16:54:13 +1100 | [diff] [blame] | 841 | if ((bp->enabled & (BP_TRAP|BP_CIABR)) != BP_TRAP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | continue; |
| 843 | if (mread(bp->address, &instr, 4) == 4 |
| 844 | && instr == bpinstr |
| 845 | && mwrite(bp->address, &bp->instr, 4) != 4) |
| 846 | printf("Couldn't remove breakpoint at %lx\n", |
| 847 | bp->address); |
| 848 | else |
| 849 | store_inst((void *)bp->address); |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | static void remove_cpu_bpts(void) |
| 854 | { |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 855 | hw_breakpoint_disable(); |
Anshuman Khandual | 1ad7d70 | 2014-11-28 10:06:42 +0530 | [diff] [blame] | 856 | write_ciabr(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | } |
| 858 | |
Sam bobroff | 958b7c8 | 2015-10-08 11:50:23 +1100 | [diff] [blame] | 859 | static void set_lpp_cmd(void) |
| 860 | { |
| 861 | unsigned long lpp; |
| 862 | |
| 863 | if (!scanhex(&lpp)) { |
| 864 | printf("Invalid number.\n"); |
| 865 | lpp = 0; |
| 866 | } |
| 867 | xmon_set_pagination_lpp(lpp); |
| 868 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | /* Command interpreting routine */ |
| 870 | static char *last_cmd; |
| 871 | |
| 872 | static int |
| 873 | cmds(struct pt_regs *excp) |
| 874 | { |
| 875 | int cmd = 0; |
| 876 | |
| 877 | last_cmd = NULL; |
| 878 | xmon_regs = excp; |
Olaf Hering | 26c8af5 | 2006-09-08 16:29:21 +0200 | [diff] [blame] | 879 | |
| 880 | if (!xmon_no_auto_backtrace) { |
| 881 | xmon_no_auto_backtrace = 1; |
| 882 | xmon_show_stack(excp->gpr[1], excp->link, excp->nip); |
| 883 | } |
| 884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | for(;;) { |
| 886 | #ifdef CONFIG_SMP |
| 887 | printf("%x:", smp_processor_id()); |
| 888 | #endif /* CONFIG_SMP */ |
| 889 | printf("mon> "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | flush_input(); |
| 891 | termch = 0; |
| 892 | cmd = skipbl(); |
| 893 | if( cmd == '\n' ) { |
| 894 | if (last_cmd == NULL) |
| 895 | continue; |
| 896 | take_input(last_cmd); |
| 897 | last_cmd = NULL; |
| 898 | cmd = inchar(); |
| 899 | } |
| 900 | switch (cmd) { |
| 901 | case 'm': |
| 902 | cmd = inchar(); |
| 903 | switch (cmd) { |
| 904 | case 'm': |
| 905 | case 's': |
| 906 | case 'd': |
| 907 | memops(cmd); |
| 908 | break; |
| 909 | case 'l': |
| 910 | memlocate(); |
| 911 | break; |
| 912 | case 'z': |
| 913 | memzcan(); |
| 914 | break; |
| 915 | case 'i': |
David Rientjes | b2b755b | 2011-03-24 15:18:15 -0700 | [diff] [blame] | 916 | show_mem(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | break; |
| 918 | default: |
| 919 | termch = cmd; |
| 920 | memex(); |
| 921 | } |
| 922 | break; |
| 923 | case 'd': |
| 924 | dump(); |
| 925 | break; |
| 926 | case 'l': |
| 927 | symbol_lookup(); |
| 928 | break; |
| 929 | case 'r': |
| 930 | prregs(excp); /* print regs */ |
| 931 | break; |
| 932 | case 'e': |
| 933 | excprint(excp); |
| 934 | break; |
| 935 | case 'S': |
| 936 | super_regs(); |
| 937 | break; |
| 938 | case 't': |
| 939 | backtrace(excp); |
| 940 | break; |
| 941 | case 'f': |
| 942 | cacheflush(); |
| 943 | break; |
| 944 | case 's': |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 945 | if (do_spu_cmd() == 0) |
| 946 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | if (do_step(excp)) |
| 948 | return cmd; |
| 949 | break; |
| 950 | case 'x': |
| 951 | case 'X': |
Benjamin Herrenschmidt | bb6b9b2 | 2005-11-30 16:54:12 +1100 | [diff] [blame] | 952 | return cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | case EOF: |
Benjamin Herrenschmidt | bb6b9b2 | 2005-11-30 16:54:12 +1100 | [diff] [blame] | 954 | printf(" <no input ...>\n"); |
| 955 | mdelay(2000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | return cmd; |
| 957 | case '?': |
Ishizaki Kou | 4d404ed | 2007-07-18 19:26:40 +1000 | [diff] [blame] | 958 | xmon_puts(help_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | break; |
Sam bobroff | 958b7c8 | 2015-10-08 11:50:23 +1100 | [diff] [blame] | 960 | case '#': |
| 961 | set_lpp_cmd(); |
| 962 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | case 'b': |
| 964 | bpt_cmds(); |
| 965 | break; |
| 966 | case 'C': |
| 967 | csum(); |
| 968 | break; |
| 969 | case 'c': |
| 970 | if (cpu_cmd()) |
| 971 | return 0; |
| 972 | break; |
| 973 | case 'z': |
| 974 | bootcmds(); |
| 975 | break; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 976 | case 'p': |
| 977 | proccall(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | break; |
Douglas Miller | 6dfb540 | 2015-11-23 09:01:15 -0600 | [diff] [blame] | 979 | case 'P': |
| 980 | show_tasks(); |
| 981 | break; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 982 | #ifdef CONFIG_PPC_STD_MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | case 'u': |
| 984 | dump_segments(); |
| 985 | break; |
Michael Ellerman | d8ee6f3 | 2014-11-12 16:54:54 +1100 | [diff] [blame] | 986 | #elif defined(CONFIG_44x) |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 987 | case 'u': |
| 988 | dump_tlb_44x(); |
| 989 | break; |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 990 | #elif defined(CONFIG_PPC_BOOK3E) |
Benjamin Herrenschmidt | 0324715 | 2010-07-09 15:34:50 +1000 | [diff] [blame] | 991 | case 'u': |
| 992 | dump_tlb_book3e(); |
| 993 | break; |
| 994 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | default: |
| 996 | printf("Unrecognized command: "); |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 997 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | if (' ' < cmd && cmd <= '~') |
| 999 | putchar(cmd); |
| 1000 | else |
| 1001 | printf("\\x%x", cmd); |
| 1002 | cmd = inchar(); |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1003 | } while (cmd != '\n'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | printf(" (type ? for help)\n"); |
| 1005 | break; |
| 1006 | } |
| 1007 | } |
| 1008 | } |
| 1009 | |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 1010 | #ifdef CONFIG_BOOKE |
| 1011 | static int do_step(struct pt_regs *regs) |
| 1012 | { |
| 1013 | regs->msr |= MSR_DE; |
| 1014 | mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM); |
| 1015 | return 1; |
| 1016 | } |
| 1017 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | /* |
| 1019 | * Step a single instruction. |
| 1020 | * Some instructions we emulate, others we execute with MSR_SE set. |
| 1021 | */ |
| 1022 | static int do_step(struct pt_regs *regs) |
| 1023 | { |
| 1024 | unsigned int instr; |
| 1025 | int stepped; |
| 1026 | |
| 1027 | /* check we are in 64-bit kernel mode, translation enabled */ |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 1028 | if ((regs->msr & (MSR_64BIT|MSR_PR|MSR_IR)) == (MSR_64BIT|MSR_IR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | if (mread(regs->nip, &instr, 4) == 4) { |
| 1030 | stepped = emulate_step(regs, instr); |
| 1031 | if (stepped < 0) { |
| 1032 | printf("Couldn't single-step %s instruction\n", |
| 1033 | (IS_RFID(instr)? "rfid": "mtmsrd")); |
| 1034 | return 0; |
| 1035 | } |
| 1036 | if (stepped > 0) { |
| 1037 | regs->trap = 0xd00 | (regs->trap & 1); |
| 1038 | printf("stepped to "); |
| 1039 | xmon_print_symbol(regs->nip, " ", "\n"); |
| 1040 | ppc_inst_dump(regs->nip, 1, 0); |
| 1041 | return 0; |
| 1042 | } |
| 1043 | } |
| 1044 | } |
| 1045 | regs->msr |= MSR_SE; |
| 1046 | return 1; |
| 1047 | } |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 1048 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | |
| 1050 | static void bootcmds(void) |
| 1051 | { |
| 1052 | int cmd; |
| 1053 | |
| 1054 | cmd = inchar(); |
| 1055 | if (cmd == 'r') |
| 1056 | ppc_md.restart(NULL); |
| 1057 | else if (cmd == 'h') |
| 1058 | ppc_md.halt(); |
| 1059 | else if (cmd == 'p') |
Alexander Graf | 9178ba2 | 2014-10-13 16:01:09 +0200 | [diff] [blame] | 1060 | if (pm_power_off) |
| 1061 | pm_power_off(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | } |
| 1063 | |
| 1064 | static int cpu_cmd(void) |
| 1065 | { |
| 1066 | #ifdef CONFIG_SMP |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1067 | unsigned long cpu, first_cpu, last_cpu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | int timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | |
| 1070 | if (!scanhex(&cpu)) { |
| 1071 | /* print cpus waiting or in xmon */ |
| 1072 | printf("cpus stopped:"); |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1073 | last_cpu = first_cpu = NR_CPUS; |
Anton Blanchard | bc1d770 | 2012-06-28 19:28:57 +0000 | [diff] [blame] | 1074 | for_each_possible_cpu(cpu) { |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 1075 | if (cpumask_test_cpu(cpu, &cpus_in_xmon)) { |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1076 | if (cpu == last_cpu + 1) { |
| 1077 | last_cpu = cpu; |
| 1078 | } else { |
| 1079 | if (last_cpu != first_cpu) |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1080 | printf("-0x%lx", last_cpu); |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1081 | last_cpu = first_cpu = cpu; |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1082 | printf(" 0x%lx", cpu); |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1083 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | } |
| 1085 | } |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1086 | if (last_cpu != first_cpu) |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1087 | printf("-0x%lx", last_cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | printf("\n"); |
| 1089 | return 0; |
| 1090 | } |
| 1091 | /* try to switch to cpu specified */ |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 1092 | if (!cpumask_test_cpu(cpu, &cpus_in_xmon)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | printf("cpu 0x%x isn't in xmon\n", cpu); |
| 1094 | return 0; |
| 1095 | } |
| 1096 | xmon_taken = 0; |
| 1097 | mb(); |
| 1098 | xmon_owner = cpu; |
| 1099 | timeout = 10000000; |
| 1100 | while (!xmon_taken) { |
| 1101 | if (--timeout == 0) { |
| 1102 | if (test_and_set_bit(0, &xmon_taken)) |
| 1103 | break; |
| 1104 | /* take control back */ |
| 1105 | mb(); |
| 1106 | xmon_owner = smp_processor_id(); |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1107 | printf("cpu 0x%x didn't take control\n", cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | return 0; |
| 1109 | } |
| 1110 | barrier(); |
| 1111 | } |
| 1112 | return 1; |
| 1113 | #else |
| 1114 | return 0; |
| 1115 | #endif /* CONFIG_SMP */ |
| 1116 | } |
| 1117 | |
| 1118 | static unsigned short fcstab[256] = { |
| 1119 | 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, |
| 1120 | 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, |
| 1121 | 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, |
| 1122 | 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, |
| 1123 | 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, |
| 1124 | 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, |
| 1125 | 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, |
| 1126 | 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, |
| 1127 | 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, |
| 1128 | 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, |
| 1129 | 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, |
| 1130 | 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, |
| 1131 | 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, |
| 1132 | 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, |
| 1133 | 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, |
| 1134 | 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, |
| 1135 | 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, |
| 1136 | 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, |
| 1137 | 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, |
| 1138 | 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, |
| 1139 | 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, |
| 1140 | 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, |
| 1141 | 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, |
| 1142 | 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, |
| 1143 | 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, |
| 1144 | 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, |
| 1145 | 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, |
| 1146 | 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, |
| 1147 | 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, |
| 1148 | 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, |
| 1149 | 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, |
| 1150 | 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 |
| 1151 | }; |
| 1152 | |
| 1153 | #define FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) |
| 1154 | |
| 1155 | static void |
| 1156 | csum(void) |
| 1157 | { |
| 1158 | unsigned int i; |
| 1159 | unsigned short fcs; |
| 1160 | unsigned char v; |
| 1161 | |
| 1162 | if (!scanhex(&adrs)) |
| 1163 | return; |
| 1164 | if (!scanhex(&ncsum)) |
| 1165 | return; |
| 1166 | fcs = 0xffff; |
| 1167 | for (i = 0; i < ncsum; ++i) { |
| 1168 | if (mread(adrs+i, &v, 1) == 0) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1169 | printf("csum stopped at "REG"\n", adrs+i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | break; |
| 1171 | } |
| 1172 | fcs = FCS(fcs, v); |
| 1173 | } |
| 1174 | printf("%x\n", fcs); |
| 1175 | } |
| 1176 | |
| 1177 | /* |
| 1178 | * Check if this is a suitable place to put a breakpoint. |
| 1179 | */ |
| 1180 | static long check_bp_loc(unsigned long addr) |
| 1181 | { |
| 1182 | unsigned int instr; |
| 1183 | |
| 1184 | addr &= ~3; |
Michael Ellerman | 51fae6de | 2005-12-04 18:39:15 +1100 | [diff] [blame] | 1185 | if (!is_kernel_addr(addr)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | printf("Breakpoints may only be placed at kernel addresses\n"); |
| 1187 | return 0; |
| 1188 | } |
| 1189 | if (!mread(addr, &instr, sizeof(instr))) { |
| 1190 | printf("Can't read instruction at address %lx\n", addr); |
| 1191 | return 0; |
| 1192 | } |
| 1193 | if (IS_MTMSRD(instr) || IS_RFID(instr)) { |
| 1194 | printf("Breakpoints may not be placed on mtmsrd or rfid " |
| 1195 | "instructions\n"); |
| 1196 | return 0; |
| 1197 | } |
| 1198 | return 1; |
| 1199 | } |
| 1200 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1201 | static char *breakpoint_help_string = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | "Breakpoint command usage:\n" |
| 1203 | "b show breakpoints\n" |
| 1204 | "b <addr> [cnt] set breakpoint at given instr addr\n" |
| 1205 | "bc clear all breakpoints\n" |
| 1206 | "bc <n/addr> clear breakpoint number n or at addr\n" |
Anshuman Khandual | 1ad7d70 | 2014-11-28 10:06:42 +0530 | [diff] [blame] | 1207 | "bi <addr> [cnt] set hardware instr breakpoint (POWER8 only)\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | "bd <addr> [cnt] set hardware data breakpoint\n" |
| 1209 | ""; |
| 1210 | |
| 1211 | static void |
| 1212 | bpt_cmds(void) |
| 1213 | { |
| 1214 | int cmd; |
| 1215 | unsigned long a; |
| 1216 | int mode, i; |
| 1217 | struct bpt *bp; |
| 1218 | const char badaddr[] = "Only kernel addresses are permitted " |
| 1219 | "for breakpoints\n"; |
| 1220 | |
| 1221 | cmd = inchar(); |
| 1222 | switch (cmd) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1223 | #ifndef CONFIG_8xx |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | case 'd': /* bd - hardware data breakpoint */ |
| 1225 | mode = 7; |
| 1226 | cmd = inchar(); |
| 1227 | if (cmd == 'r') |
| 1228 | mode = 5; |
| 1229 | else if (cmd == 'w') |
| 1230 | mode = 6; |
| 1231 | else |
| 1232 | termch = cmd; |
| 1233 | dabr.address = 0; |
| 1234 | dabr.enabled = 0; |
| 1235 | if (scanhex(&dabr.address)) { |
Michael Ellerman | 51fae6de | 2005-12-04 18:39:15 +1100 | [diff] [blame] | 1236 | if (!is_kernel_addr(dabr.address)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | printf(badaddr); |
| 1238 | break; |
| 1239 | } |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 1240 | dabr.address &= ~HW_BRK_TYPE_DABR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | dabr.enabled = mode | BP_DABR; |
| 1242 | } |
| 1243 | break; |
| 1244 | |
| 1245 | case 'i': /* bi - hardware instr breakpoint */ |
Anshuman Khandual | 1ad7d70 | 2014-11-28 10:06:42 +0530 | [diff] [blame] | 1246 | if (!cpu_has_feature(CPU_FTR_ARCH_207S)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | printf("Hardware instruction breakpoint " |
| 1248 | "not supported on this cpu\n"); |
| 1249 | break; |
| 1250 | } |
| 1251 | if (iabr) { |
Michael Ellerman | abb90ee | 2014-12-01 16:54:13 +1100 | [diff] [blame] | 1252 | iabr->enabled &= ~BP_CIABR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | iabr = NULL; |
| 1254 | } |
| 1255 | if (!scanhex(&a)) |
| 1256 | break; |
| 1257 | if (!check_bp_loc(a)) |
| 1258 | break; |
| 1259 | bp = new_breakpoint(a); |
| 1260 | if (bp != NULL) { |
Michael Ellerman | abb90ee | 2014-12-01 16:54:13 +1100 | [diff] [blame] | 1261 | bp->enabled |= BP_CIABR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | iabr = bp; |
| 1263 | } |
| 1264 | break; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1265 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | |
| 1267 | case 'c': |
| 1268 | if (!scanhex(&a)) { |
| 1269 | /* clear all breakpoints */ |
| 1270 | for (i = 0; i < NBPTS; ++i) |
| 1271 | bpts[i].enabled = 0; |
| 1272 | iabr = NULL; |
| 1273 | dabr.enabled = 0; |
| 1274 | printf("All breakpoints cleared\n"); |
| 1275 | break; |
| 1276 | } |
| 1277 | |
| 1278 | if (a <= NBPTS && a >= 1) { |
| 1279 | /* assume a breakpoint number */ |
| 1280 | bp = &bpts[a-1]; /* bp nums are 1 based */ |
| 1281 | } else { |
| 1282 | /* assume a breakpoint address */ |
| 1283 | bp = at_breakpoint(a); |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1284 | if (bp == NULL) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1285 | printf("No breakpoint at %lx\n", a); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | break; |
| 1287 | } |
| 1288 | } |
| 1289 | |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1290 | printf("Cleared breakpoint %lx (", BP_NUM(bp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | xmon_print_symbol(bp->address, " ", ")\n"); |
| 1292 | bp->enabled = 0; |
| 1293 | break; |
| 1294 | |
| 1295 | default: |
| 1296 | termch = cmd; |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1297 | cmd = skipbl(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | if (cmd == '?') { |
| 1299 | printf(breakpoint_help_string); |
| 1300 | break; |
| 1301 | } |
| 1302 | termch = cmd; |
| 1303 | if (!scanhex(&a)) { |
| 1304 | /* print all breakpoints */ |
| 1305 | printf(" type address\n"); |
| 1306 | if (dabr.enabled) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1307 | printf(" data "REG" [", dabr.address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | if (dabr.enabled & 1) |
| 1309 | printf("r"); |
| 1310 | if (dabr.enabled & 2) |
| 1311 | printf("w"); |
| 1312 | printf("]\n"); |
| 1313 | } |
| 1314 | for (bp = bpts; bp < &bpts[NBPTS]; ++bp) { |
| 1315 | if (!bp->enabled) |
| 1316 | continue; |
| 1317 | printf("%2x %s ", BP_NUM(bp), |
Michael Ellerman | abb90ee | 2014-12-01 16:54:13 +1100 | [diff] [blame] | 1318 | (bp->enabled & BP_CIABR) ? "inst": "trap"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | xmon_print_symbol(bp->address, " ", "\n"); |
| 1320 | } |
| 1321 | break; |
| 1322 | } |
| 1323 | |
| 1324 | if (!check_bp_loc(a)) |
| 1325 | break; |
| 1326 | bp = new_breakpoint(a); |
| 1327 | if (bp != NULL) |
| 1328 | bp->enabled |= BP_TRAP; |
| 1329 | break; |
| 1330 | } |
| 1331 | } |
| 1332 | |
| 1333 | /* Very cheap human name for vector lookup. */ |
| 1334 | static |
| 1335 | const char *getvecname(unsigned long vec) |
| 1336 | { |
| 1337 | char *ret; |
| 1338 | |
| 1339 | switch (vec) { |
| 1340 | case 0x100: ret = "(System Reset)"; break; |
| 1341 | case 0x200: ret = "(Machine Check)"; break; |
| 1342 | case 0x300: ret = "(Data Access)"; break; |
| 1343 | case 0x380: ret = "(Data SLB Access)"; break; |
| 1344 | case 0x400: ret = "(Instruction Access)"; break; |
| 1345 | case 0x480: ret = "(Instruction SLB Access)"; break; |
| 1346 | case 0x500: ret = "(Hardware Interrupt)"; break; |
| 1347 | case 0x600: ret = "(Alignment)"; break; |
| 1348 | case 0x700: ret = "(Program Check)"; break; |
| 1349 | case 0x800: ret = "(FPU Unavailable)"; break; |
| 1350 | case 0x900: ret = "(Decrementer)"; break; |
Michael Ellerman | 660e034 | 2013-08-15 15:22:16 +1000 | [diff] [blame] | 1351 | case 0x980: ret = "(Hypervisor Decrementer)"; break; |
| 1352 | case 0xa00: ret = "(Doorbell)"; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | case 0xc00: ret = "(System Call)"; break; |
| 1354 | case 0xd00: ret = "(Single Step)"; break; |
Michael Ellerman | 660e034 | 2013-08-15 15:22:16 +1000 | [diff] [blame] | 1355 | case 0xe40: ret = "(Emulation Assist)"; break; |
| 1356 | case 0xe60: ret = "(HMI)"; break; |
| 1357 | case 0xe80: ret = "(Hypervisor Doorbell)"; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | case 0xf00: ret = "(Performance Monitor)"; break; |
| 1359 | case 0xf20: ret = "(Altivec Unavailable)"; break; |
| 1360 | case 0x1300: ret = "(Instruction Breakpoint)"; break; |
Michael Ellerman | 660e034 | 2013-08-15 15:22:16 +1000 | [diff] [blame] | 1361 | case 0x1500: ret = "(Denormalisation)"; break; |
| 1362 | case 0x1700: ret = "(Altivec Assist)"; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | default: ret = ""; |
| 1364 | } |
| 1365 | return ret; |
| 1366 | } |
| 1367 | |
| 1368 | static void get_function_bounds(unsigned long pc, unsigned long *startp, |
| 1369 | unsigned long *endp) |
| 1370 | { |
| 1371 | unsigned long size, offset; |
| 1372 | const char *name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | |
| 1374 | *startp = *endp = 0; |
| 1375 | if (pc == 0) |
| 1376 | return; |
| 1377 | if (setjmp(bus_error_jmp) == 0) { |
| 1378 | catch_memory_errors = 1; |
| 1379 | sync(); |
Alexey Dobriyan | ffb4512 | 2007-05-08 00:28:41 -0700 | [diff] [blame] | 1380 | name = kallsyms_lookup(pc, &size, &offset, NULL, tmpstr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | if (name != NULL) { |
| 1382 | *startp = pc - offset; |
| 1383 | *endp = pc - offset + size; |
| 1384 | } |
| 1385 | sync(); |
| 1386 | } |
| 1387 | catch_memory_errors = 0; |
| 1388 | } |
| 1389 | |
Benjamin Herrenschmidt | ec2b36b | 2008-04-17 14:34:59 +1000 | [diff] [blame] | 1390 | #define LRSAVE_OFFSET (STACK_FRAME_LR_SAVE * sizeof(unsigned long)) |
| 1391 | #define MARKER_OFFSET (STACK_FRAME_MARKER * sizeof(unsigned long)) |
| 1392 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | static void xmon_show_stack(unsigned long sp, unsigned long lr, |
| 1394 | unsigned long pc) |
| 1395 | { |
Michael Ellerman | 0104cd6 | 2012-10-09 04:20:36 +0000 | [diff] [blame] | 1396 | int max_to_print = 64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | unsigned long ip; |
| 1398 | unsigned long newsp; |
| 1399 | unsigned long marker; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | struct pt_regs regs; |
| 1401 | |
Michael Ellerman | 0104cd6 | 2012-10-09 04:20:36 +0000 | [diff] [blame] | 1402 | while (max_to_print--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | if (sp < PAGE_OFFSET) { |
| 1404 | if (sp != 0) |
| 1405 | printf("SP (%lx) is in userspace\n", sp); |
| 1406 | break; |
| 1407 | } |
| 1408 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1409 | if (!mread(sp + LRSAVE_OFFSET, &ip, sizeof(unsigned long)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | || !mread(sp, &newsp, sizeof(unsigned long))) { |
| 1411 | printf("Couldn't read stack frame at %lx\n", sp); |
| 1412 | break; |
| 1413 | } |
| 1414 | |
| 1415 | /* |
| 1416 | * For the first stack frame, try to work out if |
| 1417 | * LR and/or the saved LR value in the bottommost |
| 1418 | * stack frame are valid. |
| 1419 | */ |
| 1420 | if ((pc | lr) != 0) { |
| 1421 | unsigned long fnstart, fnend; |
| 1422 | unsigned long nextip; |
| 1423 | int printip = 1; |
| 1424 | |
| 1425 | get_function_bounds(pc, &fnstart, &fnend); |
| 1426 | nextip = 0; |
| 1427 | if (newsp > sp) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1428 | mread(newsp + LRSAVE_OFFSET, &nextip, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | sizeof(unsigned long)); |
| 1430 | if (lr == ip) { |
| 1431 | if (lr < PAGE_OFFSET |
| 1432 | || (fnstart <= lr && lr < fnend)) |
| 1433 | printip = 0; |
| 1434 | } else if (lr == nextip) { |
| 1435 | printip = 0; |
| 1436 | } else if (lr >= PAGE_OFFSET |
| 1437 | && !(fnstart <= lr && lr < fnend)) { |
| 1438 | printf("[link register ] "); |
| 1439 | xmon_print_symbol(lr, " ", "\n"); |
| 1440 | } |
| 1441 | if (printip) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1442 | printf("["REG"] ", sp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | xmon_print_symbol(ip, " ", " (unreliable)\n"); |
| 1444 | } |
| 1445 | pc = lr = 0; |
| 1446 | |
| 1447 | } else { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1448 | printf("["REG"] ", sp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | xmon_print_symbol(ip, " ", "\n"); |
| 1450 | } |
| 1451 | |
| 1452 | /* Look for "regshere" marker to see if this is |
| 1453 | an exception frame. */ |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1454 | if (mread(sp + MARKER_OFFSET, &marker, sizeof(unsigned long)) |
Benjamin Herrenschmidt | ec2b36b | 2008-04-17 14:34:59 +1000 | [diff] [blame] | 1455 | && marker == STACK_FRAME_REGS_MARKER) { |
Michael Ellerman | c4de380 | 2012-10-09 04:20:35 +0000 | [diff] [blame] | 1456 | if (mread(sp + STACK_FRAME_OVERHEAD, ®s, sizeof(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | != sizeof(regs)) { |
| 1458 | printf("Couldn't read registers at %lx\n", |
Michael Ellerman | c4de380 | 2012-10-09 04:20:35 +0000 | [diff] [blame] | 1459 | sp + STACK_FRAME_OVERHEAD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | break; |
| 1461 | } |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1462 | printf("--- Exception: %lx %s at ", regs.trap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | getvecname(TRAP(®s))); |
| 1464 | pc = regs.nip; |
| 1465 | lr = regs.link; |
| 1466 | xmon_print_symbol(pc, " ", "\n"); |
| 1467 | } |
| 1468 | |
| 1469 | if (newsp == 0) |
| 1470 | break; |
| 1471 | |
| 1472 | sp = newsp; |
Michael Ellerman | 0104cd6 | 2012-10-09 04:20:36 +0000 | [diff] [blame] | 1473 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | } |
| 1475 | |
| 1476 | static void backtrace(struct pt_regs *excp) |
| 1477 | { |
| 1478 | unsigned long sp; |
| 1479 | |
| 1480 | if (scanhex(&sp)) |
| 1481 | xmon_show_stack(sp, 0, 0); |
| 1482 | else |
| 1483 | xmon_show_stack(excp->gpr[1], excp->link, excp->nip); |
| 1484 | scannl(); |
| 1485 | } |
| 1486 | |
| 1487 | static void print_bug_trap(struct pt_regs *regs) |
| 1488 | { |
Paul Mackerras | ebdba9a | 2008-10-31 21:34:09 +1100 | [diff] [blame] | 1489 | #ifdef CONFIG_BUG |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 1490 | const struct bug_entry *bug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | unsigned long addr; |
| 1492 | |
| 1493 | if (regs->msr & MSR_PR) |
| 1494 | return; /* not in kernel */ |
| 1495 | addr = regs->nip; /* address of trap instruction */ |
| 1496 | if (addr < PAGE_OFFSET) |
| 1497 | return; |
| 1498 | bug = find_bug(regs->nip); |
| 1499 | if (bug == NULL) |
| 1500 | return; |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 1501 | if (is_warning_bug(bug)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | return; |
| 1503 | |
Stephen Rothwell | 0a7c7ef | 2007-03-04 17:05:34 +1100 | [diff] [blame] | 1504 | #ifdef CONFIG_DEBUG_BUGVERBOSE |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 1505 | printf("kernel BUG at %s:%u!\n", |
| 1506 | bug->file, bug->line); |
Stephen Rothwell | 0a7c7ef | 2007-03-04 17:05:34 +1100 | [diff] [blame] | 1507 | #else |
| 1508 | printf("kernel BUG at %p!\n", (void *)bug->bug_addr); |
| 1509 | #endif |
Paul Mackerras | ebdba9a | 2008-10-31 21:34:09 +1100 | [diff] [blame] | 1510 | #endif /* CONFIG_BUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | } |
| 1512 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1513 | static void excprint(struct pt_regs *fp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | { |
| 1515 | unsigned long trap; |
| 1516 | |
| 1517 | #ifdef CONFIG_SMP |
| 1518 | printf("cpu 0x%x: ", smp_processor_id()); |
| 1519 | #endif /* CONFIG_SMP */ |
| 1520 | |
| 1521 | trap = TRAP(fp); |
| 1522 | printf("Vector: %lx %s at [%lx]\n", fp->trap, getvecname(trap), fp); |
| 1523 | printf(" pc: "); |
| 1524 | xmon_print_symbol(fp->nip, ": ", "\n"); |
| 1525 | |
| 1526 | printf(" lr: ", fp->link); |
| 1527 | xmon_print_symbol(fp->link, ": ", "\n"); |
| 1528 | |
| 1529 | printf(" sp: %lx\n", fp->gpr[1]); |
| 1530 | printf(" msr: %lx\n", fp->msr); |
| 1531 | |
Aneesh Kumar K.V | ce54152 | 2013-04-28 09:37:26 +0000 | [diff] [blame] | 1532 | if (trap == 0x300 || trap == 0x380 || trap == 0x600 || trap == 0x200) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | printf(" dar: %lx\n", fp->dar); |
| 1534 | if (trap != 0x380) |
| 1535 | printf(" dsisr: %lx\n", fp->dsisr); |
| 1536 | } |
| 1537 | |
| 1538 | printf(" current = 0x%lx\n", current); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1539 | #ifdef CONFIG_PPC64 |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 1540 | printf(" paca = 0x%lx\t softe: %d\t irq_happened: 0x%02x\n", |
| 1541 | local_paca, local_paca->soft_enabled, local_paca->irq_happened); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1542 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | if (current) { |
| 1544 | printf(" pid = %ld, comm = %s\n", |
| 1545 | current->pid, current->comm); |
| 1546 | } |
| 1547 | |
| 1548 | if (trap == 0x700) |
| 1549 | print_bug_trap(fp); |
Rashmica Gupta | eb925d6 | 2015-11-25 13:46:25 +1100 | [diff] [blame] | 1550 | |
| 1551 | printf(linux_banner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | } |
| 1553 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1554 | static void prregs(struct pt_regs *fp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1556 | int n, trap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | unsigned long base; |
| 1558 | struct pt_regs regs; |
| 1559 | |
| 1560 | if (scanhex(&base)) { |
| 1561 | if (setjmp(bus_error_jmp) == 0) { |
| 1562 | catch_memory_errors = 1; |
| 1563 | sync(); |
| 1564 | regs = *(struct pt_regs *)base; |
| 1565 | sync(); |
| 1566 | __delay(200); |
| 1567 | } else { |
| 1568 | catch_memory_errors = 0; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1569 | printf("*** Error reading registers from "REG"\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | base); |
| 1571 | return; |
| 1572 | } |
| 1573 | catch_memory_errors = 0; |
| 1574 | fp = ®s; |
| 1575 | } |
| 1576 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1577 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | if (FULL_REGS(fp)) { |
| 1579 | for (n = 0; n < 16; ++n) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1580 | printf("R%.2ld = "REG" R%.2ld = "REG"\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | n, fp->gpr[n], n+16, fp->gpr[n+16]); |
| 1582 | } else { |
| 1583 | for (n = 0; n < 7; ++n) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1584 | printf("R%.2ld = "REG" R%.2ld = "REG"\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | n, fp->gpr[n], n+7, fp->gpr[n+7]); |
| 1586 | } |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1587 | #else |
| 1588 | for (n = 0; n < 32; ++n) { |
| 1589 | printf("R%.2d = %.8x%s", n, fp->gpr[n], |
| 1590 | (n & 3) == 3? "\n": " "); |
| 1591 | if (n == 12 && !FULL_REGS(fp)) { |
| 1592 | printf("\n"); |
| 1593 | break; |
| 1594 | } |
| 1595 | } |
| 1596 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | printf("pc = "); |
| 1598 | xmon_print_symbol(fp->nip, " ", "\n"); |
Paul Mackerras | 48404f2 | 2011-05-01 19:48:20 +0000 | [diff] [blame] | 1599 | if (TRAP(fp) != 0xc00 && cpu_has_feature(CPU_FTR_CFAR)) { |
| 1600 | printf("cfar= "); |
| 1601 | xmon_print_symbol(fp->orig_gpr3, " ", "\n"); |
| 1602 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | printf("lr = "); |
| 1604 | xmon_print_symbol(fp->link, " ", "\n"); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1605 | printf("msr = "REG" cr = %.8lx\n", fp->msr, fp->ccr); |
| 1606 | printf("ctr = "REG" xer = "REG" trap = %4lx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | fp->ctr, fp->xer, fp->trap); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1608 | trap = TRAP(fp); |
| 1609 | if (trap == 0x300 || trap == 0x380 || trap == 0x600) |
| 1610 | printf("dar = "REG" dsisr = %.8lx\n", fp->dar, fp->dsisr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | } |
| 1612 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1613 | static void cacheflush(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | { |
| 1615 | int cmd; |
| 1616 | unsigned long nflush; |
| 1617 | |
| 1618 | cmd = inchar(); |
| 1619 | if (cmd != 'i') |
| 1620 | termch = cmd; |
| 1621 | scanhex((void *)&adrs); |
| 1622 | if (termch != '\n') |
| 1623 | termch = 0; |
| 1624 | nflush = 1; |
| 1625 | scanhex(&nflush); |
| 1626 | nflush = (nflush + L1_CACHE_BYTES - 1) / L1_CACHE_BYTES; |
| 1627 | if (setjmp(bus_error_jmp) == 0) { |
| 1628 | catch_memory_errors = 1; |
| 1629 | sync(); |
| 1630 | |
| 1631 | if (cmd != 'i') { |
| 1632 | for (; nflush > 0; --nflush, adrs += L1_CACHE_BYTES) |
| 1633 | cflush((void *) adrs); |
| 1634 | } else { |
| 1635 | for (; nflush > 0; --nflush, adrs += L1_CACHE_BYTES) |
| 1636 | cinval((void *) adrs); |
| 1637 | } |
| 1638 | sync(); |
| 1639 | /* wait a little while to see if we get a machine check */ |
| 1640 | __delay(200); |
| 1641 | } |
| 1642 | catch_memory_errors = 0; |
| 1643 | } |
| 1644 | |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1645 | extern unsigned long xmon_mfspr(int spr, unsigned long default_value); |
| 1646 | extern void xmon_mtspr(int spr, unsigned long value); |
| 1647 | |
| 1648 | static int |
| 1649 | read_spr(int n, unsigned long *vp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | unsigned long ret = -1UL; |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1652 | int ok = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | |
| 1654 | if (setjmp(bus_error_jmp) == 0) { |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1655 | catch_spr_faults = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | sync(); |
| 1657 | |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1658 | ret = xmon_mfspr(n, *vp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | |
| 1660 | sync(); |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1661 | *vp = ret; |
| 1662 | ok = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | } |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1664 | catch_spr_faults = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1666 | return ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | } |
| 1668 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1669 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | write_spr(int n, unsigned long val) |
| 1671 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | if (setjmp(bus_error_jmp) == 0) { |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1673 | catch_spr_faults = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | sync(); |
| 1675 | |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1676 | xmon_mtspr(n, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | |
| 1678 | sync(); |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1679 | } else { |
| 1680 | printf("SPR 0x%03x (%4d) Faulted during write\n", n, n); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | } |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1682 | catch_spr_faults = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1683 | } |
| 1684 | |
Michael Ellerman | 1846193 | 2016-07-07 22:54:29 +1000 | [diff] [blame] | 1685 | static void dump_206_sprs(void) |
| 1686 | { |
| 1687 | #ifdef CONFIG_PPC64 |
| 1688 | if (!cpu_has_feature(CPU_FTR_ARCH_206)) |
| 1689 | return; |
| 1690 | |
| 1691 | /* Actually some of these pre-date 2.06, but whatevs */ |
| 1692 | |
| 1693 | printf("srr0 = %.16x srr1 = %.16x dsisr = %.8x\n", |
| 1694 | mfspr(SPRN_SRR0), mfspr(SPRN_SRR1), mfspr(SPRN_DSISR)); |
| 1695 | printf("dscr = %.16x ppr = %.16x pir = %.8x\n", |
| 1696 | mfspr(SPRN_DSCR), mfspr(SPRN_PPR), mfspr(SPRN_PIR)); |
| 1697 | |
| 1698 | if (!(mfmsr() & MSR_HV)) |
| 1699 | return; |
| 1700 | |
| 1701 | printf("sdr1 = %.16x hdar = %.16x hdsisr = %.8x\n", |
| 1702 | mfspr(SPRN_SDR1), mfspr(SPRN_HDAR), mfspr(SPRN_HDSISR)); |
| 1703 | printf("hsrr0 = %.16x hsrr1 = %.16x hdec = %.8x\n", |
| 1704 | mfspr(SPRN_HSRR0), mfspr(SPRN_HSRR1), mfspr(SPRN_HDEC)); |
| 1705 | printf("lpcr = %.16x pcr = %.16x lpidr = %.8x\n", |
| 1706 | mfspr(SPRN_LPCR), mfspr(SPRN_PCR), mfspr(SPRN_LPID)); |
| 1707 | printf("hsprg0 = %.16x hsprg1 = %.16x\n", |
| 1708 | mfspr(SPRN_HSPRG0), mfspr(SPRN_HSPRG1)); |
| 1709 | printf("dabr = %.16x dabrx = %.16x\n", |
| 1710 | mfspr(SPRN_DABR), mfspr(SPRN_DABRX)); |
| 1711 | #endif |
| 1712 | } |
| 1713 | |
Michael Ellerman | e0ddf7a | 2016-07-07 22:54:30 +1000 | [diff] [blame] | 1714 | static void dump_207_sprs(void) |
| 1715 | { |
| 1716 | #ifdef CONFIG_PPC64 |
| 1717 | unsigned long msr; |
| 1718 | |
| 1719 | if (!cpu_has_feature(CPU_FTR_ARCH_207S)) |
| 1720 | return; |
| 1721 | |
| 1722 | printf("dpdes = %.16x tir = %.16x cir = %.8x\n", |
| 1723 | mfspr(SPRN_DPDES), mfspr(SPRN_TIR), mfspr(SPRN_CIR)); |
| 1724 | |
| 1725 | printf("fscr = %.16x tar = %.16x pspb = %.8x\n", |
| 1726 | mfspr(SPRN_FSCR), mfspr(SPRN_TAR), mfspr(SPRN_PSPB)); |
| 1727 | |
| 1728 | msr = mfmsr(); |
| 1729 | if (msr & MSR_TM) { |
| 1730 | /* Only if TM has been enabled in the kernel */ |
| 1731 | printf("tfhar = %.16x tfiar = %.16x texasr = %.16x\n", |
| 1732 | mfspr(SPRN_TFHAR), mfspr(SPRN_TFIAR), |
| 1733 | mfspr(SPRN_TEXASR)); |
| 1734 | } |
| 1735 | |
| 1736 | printf("mmcr0 = %.16x mmcr1 = %.16x mmcr2 = %.16x\n", |
| 1737 | mfspr(SPRN_MMCR0), mfspr(SPRN_MMCR1), mfspr(SPRN_MMCR2)); |
| 1738 | printf("pmc1 = %.8x pmc2 = %.8x pmc3 = %.8x pmc4 = %.8x\n", |
| 1739 | mfspr(SPRN_PMC1), mfspr(SPRN_PMC2), |
| 1740 | mfspr(SPRN_PMC3), mfspr(SPRN_PMC4)); |
| 1741 | printf("mmcra = %.16x siar = %.16x pmc5 = %.8x\n", |
| 1742 | mfspr(SPRN_MMCRA), mfspr(SPRN_SIAR), mfspr(SPRN_PMC5)); |
| 1743 | printf("sdar = %.16x sier = %.16x pmc6 = %.8x\n", |
| 1744 | mfspr(SPRN_SDAR), mfspr(SPRN_SIER), mfspr(SPRN_PMC6)); |
| 1745 | printf("ebbhr = %.16x ebbrr = %.16x bescr = %.16x\n", |
| 1746 | mfspr(SPRN_EBBHR), mfspr(SPRN_EBBRR), mfspr(SPRN_BESCR)); |
| 1747 | |
| 1748 | if (!(msr & MSR_HV)) |
| 1749 | return; |
| 1750 | |
| 1751 | printf("hfscr = %.16x dhdes = %.16x rpr = %.16x\n", |
| 1752 | mfspr(SPRN_HFSCR), mfspr(SPRN_DHDES), mfspr(SPRN_RPR)); |
| 1753 | printf("dawr = %.16x dawrx = %.16x ciabr = %.16x\n", |
| 1754 | mfspr(SPRN_DAWR), mfspr(SPRN_DAWRX), mfspr(SPRN_CIABR)); |
| 1755 | #endif |
| 1756 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1758 | static void dump_one_spr(int spr, bool show_unimplemented) |
| 1759 | { |
| 1760 | unsigned long val; |
| 1761 | |
| 1762 | val = 0xdeadbeef; |
| 1763 | if (!read_spr(spr, &val)) { |
| 1764 | printf("SPR 0x%03x (%4d) Faulted during read\n", spr, spr); |
| 1765 | return; |
| 1766 | } |
| 1767 | |
| 1768 | if (val == 0xdeadbeef) { |
| 1769 | /* Looks like read was a nop, confirm */ |
| 1770 | val = 0x0badcafe; |
| 1771 | if (!read_spr(spr, &val)) { |
| 1772 | printf("SPR 0x%03x (%4d) Faulted during read\n", spr, spr); |
| 1773 | return; |
| 1774 | } |
| 1775 | |
| 1776 | if (val == 0x0badcafe) { |
| 1777 | if (show_unimplemented) |
| 1778 | printf("SPR 0x%03x (%4d) Unimplemented\n", spr, spr); |
| 1779 | return; |
| 1780 | } |
| 1781 | } |
| 1782 | |
| 1783 | printf("SPR 0x%03x (%4d) = 0x%lx\n", spr, spr, val); |
| 1784 | } |
| 1785 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1786 | static void super_regs(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | { |
Michael Ellerman | 13629da | 2016-07-07 22:54:27 +1000 | [diff] [blame] | 1788 | static unsigned long regno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | int cmd; |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1790 | int spr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | |
| 1792 | cmd = skipbl(); |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1793 | |
| 1794 | switch (cmd) { |
| 1795 | case '\n': { |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1796 | unsigned long sp, toc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | asm("mr %0,1" : "=r" (sp) :); |
| 1798 | asm("mr %0,2" : "=r" (toc) :); |
| 1799 | |
Michael Ellerman | 56346ad | 2016-07-07 22:54:28 +1000 | [diff] [blame] | 1800 | printf("msr = "REG" sprg0 = "REG"\n", |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1801 | mfmsr(), mfspr(SPRN_SPRG0)); |
Michael Ellerman | 56346ad | 2016-07-07 22:54:28 +1000 | [diff] [blame] | 1802 | printf("pvr = "REG" sprg1 = "REG"\n", |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1803 | mfspr(SPRN_PVR), mfspr(SPRN_SPRG1)); |
Michael Ellerman | 56346ad | 2016-07-07 22:54:28 +1000 | [diff] [blame] | 1804 | printf("dec = "REG" sprg2 = "REG"\n", |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1805 | mfspr(SPRN_DEC), mfspr(SPRN_SPRG2)); |
Michael Ellerman | 56346ad | 2016-07-07 22:54:28 +1000 | [diff] [blame] | 1806 | printf("sp = "REG" sprg3 = "REG"\n", sp, mfspr(SPRN_SPRG3)); |
| 1807 | printf("toc = "REG" dar = "REG"\n", toc, mfspr(SPRN_DAR)); |
| 1808 | |
Michael Ellerman | 1846193 | 2016-07-07 22:54:29 +1000 | [diff] [blame] | 1809 | dump_206_sprs(); |
Michael Ellerman | e0ddf7a | 2016-07-07 22:54:30 +1000 | [diff] [blame] | 1810 | dump_207_sprs(); |
Michael Ellerman | 1846193 | 2016-07-07 22:54:29 +1000 | [diff] [blame] | 1811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | return; |
| 1813 | } |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1814 | case 'w': { |
| 1815 | unsigned long val; |
| 1816 | scanhex(®no); |
| 1817 | val = 0; |
| 1818 | read_spr(regno, &val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | scanhex(&val); |
| 1820 | write_spr(regno, val); |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1821 | dump_one_spr(regno, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | } |
Paul Mackerras | 31cdd0c | 2016-04-13 21:31:24 +1000 | [diff] [blame] | 1824 | case 'r': |
| 1825 | scanhex(®no); |
| 1826 | dump_one_spr(regno, true); |
| 1827 | break; |
| 1828 | case 'a': |
| 1829 | /* dump ALL SPRs */ |
| 1830 | for (spr = 1; spr < 1024; ++spr) |
| 1831 | dump_one_spr(spr, false); |
| 1832 | break; |
| 1833 | } |
| 1834 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1835 | scannl(); |
| 1836 | } |
| 1837 | |
| 1838 | /* |
| 1839 | * Stuff for reading and writing memory safely |
| 1840 | */ |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1841 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1842 | mread(unsigned long adrs, void *buf, int size) |
| 1843 | { |
| 1844 | volatile int n; |
| 1845 | char *p, *q; |
| 1846 | |
| 1847 | n = 0; |
| 1848 | if (setjmp(bus_error_jmp) == 0) { |
| 1849 | catch_memory_errors = 1; |
| 1850 | sync(); |
| 1851 | p = (char *)adrs; |
| 1852 | q = (char *)buf; |
| 1853 | switch (size) { |
| 1854 | case 2: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1855 | *(u16 *)q = *(u16 *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | break; |
| 1857 | case 4: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1858 | *(u32 *)q = *(u32 *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | break; |
| 1860 | case 8: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1861 | *(u64 *)q = *(u64 *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | break; |
| 1863 | default: |
| 1864 | for( ; n < size; ++n) { |
| 1865 | *q++ = *p++; |
| 1866 | sync(); |
| 1867 | } |
| 1868 | } |
| 1869 | sync(); |
| 1870 | /* wait a little while to see if we get a machine check */ |
| 1871 | __delay(200); |
| 1872 | n = size; |
| 1873 | } |
| 1874 | catch_memory_errors = 0; |
| 1875 | return n; |
| 1876 | } |
| 1877 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1878 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | mwrite(unsigned long adrs, void *buf, int size) |
| 1880 | { |
| 1881 | volatile int n; |
| 1882 | char *p, *q; |
| 1883 | |
| 1884 | n = 0; |
| 1885 | if (setjmp(bus_error_jmp) == 0) { |
| 1886 | catch_memory_errors = 1; |
| 1887 | sync(); |
| 1888 | p = (char *) adrs; |
| 1889 | q = (char *) buf; |
| 1890 | switch (size) { |
| 1891 | case 2: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1892 | *(u16 *)p = *(u16 *)q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | break; |
| 1894 | case 4: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1895 | *(u32 *)p = *(u32 *)q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | break; |
| 1897 | case 8: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1898 | *(u64 *)p = *(u64 *)q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | break; |
| 1900 | default: |
| 1901 | for ( ; n < size; ++n) { |
| 1902 | *p++ = *q++; |
| 1903 | sync(); |
| 1904 | } |
| 1905 | } |
| 1906 | sync(); |
| 1907 | /* wait a little while to see if we get a machine check */ |
| 1908 | __delay(200); |
| 1909 | n = size; |
| 1910 | } else { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1911 | printf("*** Error writing address "REG"\n", adrs + n); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | } |
| 1913 | catch_memory_errors = 0; |
| 1914 | return n; |
| 1915 | } |
| 1916 | |
| 1917 | static int fault_type; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1918 | static int fault_except; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | static char *fault_chars[] = { "--", "**", "##" }; |
| 1920 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1921 | static int handle_fault(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1923 | fault_except = TRAP(regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | switch (TRAP(regs)) { |
| 1925 | case 0x200: |
| 1926 | fault_type = 0; |
| 1927 | break; |
| 1928 | case 0x300: |
| 1929 | case 0x380: |
| 1930 | fault_type = 1; |
| 1931 | break; |
| 1932 | default: |
| 1933 | fault_type = 2; |
| 1934 | } |
| 1935 | |
| 1936 | longjmp(bus_error_jmp, 1); |
| 1937 | |
| 1938 | return 0; |
| 1939 | } |
| 1940 | |
| 1941 | #define SWAP(a, b, t) ((t) = (a), (a) = (b), (b) = (t)) |
| 1942 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1943 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | byterev(unsigned char *val, int size) |
| 1945 | { |
| 1946 | int t; |
| 1947 | |
| 1948 | switch (size) { |
| 1949 | case 2: |
| 1950 | SWAP(val[0], val[1], t); |
| 1951 | break; |
| 1952 | case 4: |
| 1953 | SWAP(val[0], val[3], t); |
| 1954 | SWAP(val[1], val[2], t); |
| 1955 | break; |
| 1956 | case 8: /* is there really any use for this? */ |
| 1957 | SWAP(val[0], val[7], t); |
| 1958 | SWAP(val[1], val[6], t); |
| 1959 | SWAP(val[2], val[5], t); |
| 1960 | SWAP(val[3], val[4], t); |
| 1961 | break; |
| 1962 | } |
| 1963 | } |
| 1964 | |
| 1965 | static int brev; |
| 1966 | static int mnoread; |
| 1967 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1968 | static char *memex_help_string = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | "Memory examine command usage:\n" |
| 1970 | "m [addr] [flags] examine/change memory\n" |
| 1971 | " addr is optional. will start where left off.\n" |
| 1972 | " flags may include chars from this set:\n" |
| 1973 | " b modify by bytes (default)\n" |
| 1974 | " w modify by words (2 byte)\n" |
| 1975 | " l modify by longs (4 byte)\n" |
| 1976 | " d modify by doubleword (8 byte)\n" |
| 1977 | " r toggle reverse byte order mode\n" |
| 1978 | " n do not read memory (for i/o spaces)\n" |
| 1979 | " . ok to read (default)\n" |
| 1980 | "NOTE: flags are saved as defaults\n" |
| 1981 | ""; |
| 1982 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1983 | static char *memex_subcmd_help_string = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | "Memory examine subcommands:\n" |
| 1985 | " hexval write this val to current location\n" |
| 1986 | " 'string' write chars from string to this location\n" |
| 1987 | " ' increment address\n" |
| 1988 | " ^ decrement address\n" |
| 1989 | " / increment addr by 0x10. //=0x100, ///=0x1000, etc\n" |
| 1990 | " \\ decrement addr by 0x10. \\\\=0x100, \\\\\\=0x1000, etc\n" |
| 1991 | " ` clear no-read flag\n" |
| 1992 | " ; stay at this addr\n" |
| 1993 | " v change to byte mode\n" |
| 1994 | " w change to word (2 byte) mode\n" |
| 1995 | " l change to long (4 byte) mode\n" |
| 1996 | " u change to doubleword (8 byte) mode\n" |
| 1997 | " m addr change current addr\n" |
| 1998 | " n toggle no-read flag\n" |
| 1999 | " r toggle byte reverse flag\n" |
| 2000 | " < count back up count bytes\n" |
| 2001 | " > count skip forward count bytes\n" |
| 2002 | " x exit this mode\n" |
| 2003 | ""; |
| 2004 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2005 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | memex(void) |
| 2007 | { |
| 2008 | int cmd, inc, i, nslash; |
| 2009 | unsigned long n; |
| 2010 | unsigned char val[16]; |
| 2011 | |
| 2012 | scanhex((void *)&adrs); |
| 2013 | cmd = skipbl(); |
| 2014 | if (cmd == '?') { |
| 2015 | printf(memex_help_string); |
| 2016 | return; |
| 2017 | } else { |
| 2018 | termch = cmd; |
| 2019 | } |
| 2020 | last_cmd = "m\n"; |
| 2021 | while ((cmd = skipbl()) != '\n') { |
| 2022 | switch( cmd ){ |
| 2023 | case 'b': size = 1; break; |
| 2024 | case 'w': size = 2; break; |
| 2025 | case 'l': size = 4; break; |
| 2026 | case 'd': size = 8; break; |
| 2027 | case 'r': brev = !brev; break; |
| 2028 | case 'n': mnoread = 1; break; |
| 2029 | case '.': mnoread = 0; break; |
| 2030 | } |
| 2031 | } |
| 2032 | if( size <= 0 ) |
| 2033 | size = 1; |
| 2034 | else if( size > 8 ) |
| 2035 | size = 8; |
| 2036 | for(;;){ |
| 2037 | if (!mnoread) |
| 2038 | n = mread(adrs, val, size); |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2039 | printf(REG"%c", adrs, brev? 'r': ' '); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | if (!mnoread) { |
| 2041 | if (brev) |
| 2042 | byterev(val, size); |
| 2043 | putchar(' '); |
| 2044 | for (i = 0; i < n; ++i) |
| 2045 | printf("%.2x", val[i]); |
| 2046 | for (; i < size; ++i) |
| 2047 | printf("%s", fault_chars[fault_type]); |
| 2048 | } |
| 2049 | putchar(' '); |
| 2050 | inc = size; |
| 2051 | nslash = 0; |
| 2052 | for(;;){ |
| 2053 | if( scanhex(&n) ){ |
| 2054 | for (i = 0; i < size; ++i) |
| 2055 | val[i] = n >> (i * 8); |
| 2056 | if (!brev) |
| 2057 | byterev(val, size); |
| 2058 | mwrite(adrs, val, size); |
| 2059 | inc = size; |
| 2060 | } |
| 2061 | cmd = skipbl(); |
| 2062 | if (cmd == '\n') |
| 2063 | break; |
| 2064 | inc = 0; |
| 2065 | switch (cmd) { |
| 2066 | case '\'': |
| 2067 | for(;;){ |
| 2068 | n = inchar(); |
| 2069 | if( n == '\\' ) |
| 2070 | n = bsesc(); |
| 2071 | else if( n == '\'' ) |
| 2072 | break; |
| 2073 | for (i = 0; i < size; ++i) |
| 2074 | val[i] = n >> (i * 8); |
| 2075 | if (!brev) |
| 2076 | byterev(val, size); |
| 2077 | mwrite(adrs, val, size); |
| 2078 | adrs += size; |
| 2079 | } |
| 2080 | adrs -= size; |
| 2081 | inc = size; |
| 2082 | break; |
| 2083 | case ',': |
| 2084 | adrs += size; |
| 2085 | break; |
| 2086 | case '.': |
| 2087 | mnoread = 0; |
| 2088 | break; |
| 2089 | case ';': |
| 2090 | break; |
| 2091 | case 'x': |
| 2092 | case EOF: |
| 2093 | scannl(); |
| 2094 | return; |
| 2095 | case 'b': |
| 2096 | case 'v': |
| 2097 | size = 1; |
| 2098 | break; |
| 2099 | case 'w': |
| 2100 | size = 2; |
| 2101 | break; |
| 2102 | case 'l': |
| 2103 | size = 4; |
| 2104 | break; |
| 2105 | case 'u': |
| 2106 | size = 8; |
| 2107 | break; |
| 2108 | case '^': |
| 2109 | adrs -= size; |
| 2110 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | case '/': |
| 2112 | if (nslash > 0) |
| 2113 | adrs -= 1 << nslash; |
| 2114 | else |
| 2115 | nslash = 0; |
| 2116 | nslash += 4; |
| 2117 | adrs += 1 << nslash; |
| 2118 | break; |
| 2119 | case '\\': |
| 2120 | if (nslash < 0) |
| 2121 | adrs += 1 << -nslash; |
| 2122 | else |
| 2123 | nslash = 0; |
| 2124 | nslash -= 4; |
| 2125 | adrs -= 1 << -nslash; |
| 2126 | break; |
| 2127 | case 'm': |
| 2128 | scanhex((void *)&adrs); |
| 2129 | break; |
| 2130 | case 'n': |
| 2131 | mnoread = 1; |
| 2132 | break; |
| 2133 | case 'r': |
| 2134 | brev = !brev; |
| 2135 | break; |
| 2136 | case '<': |
| 2137 | n = size; |
| 2138 | scanhex(&n); |
| 2139 | adrs -= n; |
| 2140 | break; |
| 2141 | case '>': |
| 2142 | n = size; |
| 2143 | scanhex(&n); |
| 2144 | adrs += n; |
| 2145 | break; |
| 2146 | case '?': |
| 2147 | printf(memex_subcmd_help_string); |
| 2148 | break; |
| 2149 | } |
| 2150 | } |
| 2151 | adrs += inc; |
| 2152 | } |
| 2153 | } |
| 2154 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2155 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | bsesc(void) |
| 2157 | { |
| 2158 | int c; |
| 2159 | |
| 2160 | c = inchar(); |
| 2161 | switch( c ){ |
| 2162 | case 'n': c = '\n'; break; |
| 2163 | case 'r': c = '\r'; break; |
| 2164 | case 'b': c = '\b'; break; |
| 2165 | case 't': c = '\t'; break; |
| 2166 | } |
| 2167 | return c; |
| 2168 | } |
| 2169 | |
Olaf Hering | 7e5b593 | 2006-03-08 20:40:28 +0100 | [diff] [blame] | 2170 | static void xmon_rawdump (unsigned long adrs, long ndump) |
| 2171 | { |
| 2172 | long n, m, r, nr; |
| 2173 | unsigned char temp[16]; |
| 2174 | |
| 2175 | for (n = ndump; n > 0;) { |
| 2176 | r = n < 16? n: 16; |
| 2177 | nr = mread(adrs, temp, r); |
| 2178 | adrs += nr; |
| 2179 | for (m = 0; m < r; ++m) { |
| 2180 | if (m < nr) |
| 2181 | printf("%.2x", temp[m]); |
| 2182 | else |
| 2183 | printf("%s", fault_chars[fault_type]); |
| 2184 | } |
| 2185 | n -= r; |
| 2186 | if (nr < r) |
| 2187 | break; |
| 2188 | } |
| 2189 | printf("\n"); |
| 2190 | } |
| 2191 | |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2192 | #ifdef CONFIG_PPC64 |
| 2193 | static void dump_one_paca(int cpu) |
| 2194 | { |
| 2195 | struct paca_struct *p; |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2196 | #ifdef CONFIG_PPC_STD_MMU_64 |
| 2197 | int i = 0; |
| 2198 | #endif |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2199 | |
| 2200 | if (setjmp(bus_error_jmp) != 0) { |
| 2201 | printf("*** Error dumping paca for cpu 0x%x!\n", cpu); |
| 2202 | return; |
| 2203 | } |
| 2204 | |
| 2205 | catch_memory_errors = 1; |
| 2206 | sync(); |
| 2207 | |
| 2208 | p = &paca[cpu]; |
| 2209 | |
| 2210 | printf("paca for cpu 0x%x @ %p:\n", cpu, p); |
| 2211 | |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2212 | printf(" %-*s = %s\n", 20, "possible", cpu_possible(cpu) ? "yes" : "no"); |
| 2213 | printf(" %-*s = %s\n", 20, "present", cpu_present(cpu) ? "yes" : "no"); |
| 2214 | printf(" %-*s = %s\n", 20, "online", cpu_online(cpu) ? "yes" : "no"); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2215 | |
| 2216 | #define DUMP(paca, name, format) \ |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2217 | printf(" %-*s = %#-*"format"\t(0x%lx)\n", 20, #name, 18, paca->name, \ |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2218 | offsetof(struct paca_struct, name)); |
| 2219 | |
| 2220 | DUMP(p, lock_token, "x"); |
| 2221 | DUMP(p, paca_index, "x"); |
| 2222 | DUMP(p, kernel_toc, "lx"); |
| 2223 | DUMP(p, kernelbase, "lx"); |
| 2224 | DUMP(p, kernel_msr, "lx"); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2225 | DUMP(p, emergency_sp, "p"); |
Mahesh Salgaonkar | 729b0f7 | 2013-10-30 20:04:00 +0530 | [diff] [blame] | 2226 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 2227 | DUMP(p, mc_emergency_sp, "p"); |
| 2228 | DUMP(p, in_mce, "x"); |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2229 | DUMP(p, hmi_event_available, "x"); |
Mahesh Salgaonkar | 729b0f7 | 2013-10-30 20:04:00 +0530 | [diff] [blame] | 2230 | #endif |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2231 | DUMP(p, data_offset, "lx"); |
| 2232 | DUMP(p, hw_cpu_id, "x"); |
| 2233 | DUMP(p, cpu_start, "x"); |
| 2234 | DUMP(p, kexec_state, "x"); |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2235 | #ifdef CONFIG_PPC_STD_MMU_64 |
| 2236 | for (i = 0; i < SLB_NUM_BOLTED; i++) { |
| 2237 | u64 esid, vsid; |
| 2238 | |
| 2239 | if (!p->slb_shadow_ptr) |
| 2240 | continue; |
| 2241 | |
| 2242 | esid = be64_to_cpu(p->slb_shadow_ptr->save_area[i].esid); |
| 2243 | vsid = be64_to_cpu(p->slb_shadow_ptr->save_area[i].vsid); |
| 2244 | |
| 2245 | if (esid || vsid) { |
| 2246 | printf(" slb_shadow[%d]: = 0x%016lx 0x%016lx\n", |
| 2247 | i, esid, vsid); |
| 2248 | } |
| 2249 | } |
| 2250 | DUMP(p, vmalloc_sllp, "x"); |
| 2251 | DUMP(p, slb_cache_ptr, "x"); |
| 2252 | for (i = 0; i < SLB_CACHE_ENTRIES; i++) |
| 2253 | printf(" slb_cache[%d]: = 0x%016lx\n", i, p->slb_cache[i]); |
| 2254 | #endif |
| 2255 | DUMP(p, dscr_default, "llx"); |
| 2256 | #ifdef CONFIG_PPC_BOOK3E |
| 2257 | DUMP(p, pgd, "p"); |
| 2258 | DUMP(p, kernel_pgd, "p"); |
| 2259 | DUMP(p, tcd_ptr, "p"); |
| 2260 | DUMP(p, mc_kstack, "p"); |
| 2261 | DUMP(p, crit_kstack, "p"); |
| 2262 | DUMP(p, dbg_kstack, "p"); |
| 2263 | #endif |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2264 | DUMP(p, __current, "p"); |
| 2265 | DUMP(p, kstack, "lx"); |
| 2266 | DUMP(p, stab_rr, "lx"); |
| 2267 | DUMP(p, saved_r1, "lx"); |
| 2268 | DUMP(p, trap_save, "x"); |
| 2269 | DUMP(p, soft_enabled, "x"); |
| 2270 | DUMP(p, irq_happened, "x"); |
| 2271 | DUMP(p, io_sync, "x"); |
| 2272 | DUMP(p, irq_work_pending, "x"); |
| 2273 | DUMP(p, nap_state_lost, "x"); |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2274 | DUMP(p, sprg_vdso, "llx"); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2275 | |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2276 | #ifdef CONFIG_PPC_TRANSACTIONAL_MEM |
| 2277 | DUMP(p, tm_scratch, "llx"); |
| 2278 | #endif |
| 2279 | |
| 2280 | #ifdef CONFIG_PPC_POWERNV |
| 2281 | DUMP(p, core_idle_state_ptr, "p"); |
| 2282 | DUMP(p, thread_idle_state, "x"); |
| 2283 | DUMP(p, thread_mask, "x"); |
| 2284 | DUMP(p, subcore_sibling_mask, "x"); |
| 2285 | #endif |
| 2286 | |
Christophe Leroy | c223c90 | 2016-05-17 08:33:46 +0200 | [diff] [blame] | 2287 | DUMP(p, accounting.user_time, "llx"); |
| 2288 | DUMP(p, accounting.system_time, "llx"); |
| 2289 | DUMP(p, accounting.user_time_scaled, "llx"); |
| 2290 | DUMP(p, accounting.starttime, "llx"); |
| 2291 | DUMP(p, accounting.starttime_user, "llx"); |
| 2292 | DUMP(p, accounting.startspurr, "llx"); |
| 2293 | DUMP(p, accounting.utime_sspurr, "llx"); |
Michael Ellerman | ad987fc | 2015-10-14 16:58:36 +1100 | [diff] [blame] | 2294 | DUMP(p, stolen_time, "llx"); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2295 | #undef DUMP |
| 2296 | |
| 2297 | catch_memory_errors = 0; |
| 2298 | sync(); |
| 2299 | } |
| 2300 | |
| 2301 | static void dump_all_pacas(void) |
| 2302 | { |
| 2303 | int cpu; |
| 2304 | |
| 2305 | if (num_possible_cpus() == 0) { |
| 2306 | printf("No possible cpus, use 'dp #' to dump individual cpus\n"); |
| 2307 | return; |
| 2308 | } |
| 2309 | |
| 2310 | for_each_possible_cpu(cpu) |
| 2311 | dump_one_paca(cpu); |
| 2312 | } |
| 2313 | |
| 2314 | static void dump_pacas(void) |
| 2315 | { |
| 2316 | unsigned long num; |
| 2317 | int c; |
| 2318 | |
| 2319 | c = inchar(); |
| 2320 | if (c == 'a') { |
| 2321 | dump_all_pacas(); |
| 2322 | return; |
| 2323 | } |
| 2324 | |
| 2325 | termch = c; /* Put c back, it wasn't 'a' */ |
| 2326 | |
| 2327 | if (scanhex(&num)) |
| 2328 | dump_one_paca(num); |
| 2329 | else |
| 2330 | dump_one_paca(xmon_owner); |
| 2331 | } |
| 2332 | #endif |
| 2333 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2334 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | dump(void) |
| 2336 | { |
| 2337 | int c; |
| 2338 | |
| 2339 | c = inchar(); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2340 | |
| 2341 | #ifdef CONFIG_PPC64 |
| 2342 | if (c == 'p') { |
Sam bobroff | 958b7c8 | 2015-10-08 11:50:23 +1100 | [diff] [blame] | 2343 | xmon_start_pagination(); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2344 | dump_pacas(); |
Sam bobroff | 958b7c8 | 2015-10-08 11:50:23 +1100 | [diff] [blame] | 2345 | xmon_end_pagination(); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2346 | return; |
| 2347 | } |
| 2348 | #endif |
| 2349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2350 | if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n') |
| 2351 | termch = c; |
| 2352 | scanhex((void *)&adrs); |
| 2353 | if (termch != '\n') |
| 2354 | termch = 0; |
| 2355 | if (c == 'i') { |
| 2356 | scanhex(&nidump); |
| 2357 | if (nidump == 0) |
| 2358 | nidump = 16; |
| 2359 | else if (nidump > MAX_DUMP) |
| 2360 | nidump = MAX_DUMP; |
| 2361 | adrs += ppc_inst_dump(adrs, nidump, 1); |
| 2362 | last_cmd = "di\n"; |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2363 | } else if (c == 'l') { |
| 2364 | dump_log_buf(); |
Andrew Donnellan | fde93a0 | 2016-02-09 18:17:49 +1100 | [diff] [blame] | 2365 | } else if (c == 'o') { |
| 2366 | dump_opal_msglog(); |
Olaf Hering | 7e5b593 | 2006-03-08 20:40:28 +0100 | [diff] [blame] | 2367 | } else if (c == 'r') { |
| 2368 | scanhex(&ndump); |
| 2369 | if (ndump == 0) |
| 2370 | ndump = 64; |
| 2371 | xmon_rawdump(adrs, ndump); |
| 2372 | adrs += ndump; |
| 2373 | last_cmd = "dr\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | } else { |
| 2375 | scanhex(&ndump); |
| 2376 | if (ndump == 0) |
| 2377 | ndump = 64; |
| 2378 | else if (ndump > MAX_DUMP) |
| 2379 | ndump = MAX_DUMP; |
| 2380 | prdump(adrs, ndump); |
| 2381 | adrs += ndump; |
| 2382 | last_cmd = "d\n"; |
| 2383 | } |
| 2384 | } |
| 2385 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2386 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2387 | prdump(unsigned long adrs, long ndump) |
| 2388 | { |
| 2389 | long n, m, c, r, nr; |
| 2390 | unsigned char temp[16]; |
| 2391 | |
| 2392 | for (n = ndump; n > 0;) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2393 | printf(REG, adrs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | putchar(' '); |
| 2395 | r = n < 16? n: 16; |
| 2396 | nr = mread(adrs, temp, r); |
| 2397 | adrs += nr; |
| 2398 | for (m = 0; m < r; ++m) { |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2399 | if ((m & (sizeof(long) - 1)) == 0 && m > 0) |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2400 | putchar(' '); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2401 | if (m < nr) |
| 2402 | printf("%.2x", temp[m]); |
| 2403 | else |
| 2404 | printf("%s", fault_chars[fault_type]); |
| 2405 | } |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2406 | for (; m < 16; ++m) { |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2407 | if ((m & (sizeof(long) - 1)) == 0) |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2408 | putchar(' '); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2409 | printf(" "); |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2410 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2411 | printf(" |"); |
| 2412 | for (m = 0; m < r; ++m) { |
| 2413 | if (m < nr) { |
| 2414 | c = temp[m]; |
| 2415 | putchar(' ' <= c && c <= '~'? c: '.'); |
| 2416 | } else |
| 2417 | putchar(' '); |
| 2418 | } |
| 2419 | n -= r; |
| 2420 | for (; m < 16; ++m) |
| 2421 | putchar(' '); |
| 2422 | printf("|\n"); |
| 2423 | if (nr < r) |
| 2424 | break; |
| 2425 | } |
| 2426 | } |
| 2427 | |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2428 | typedef int (*instruction_dump_func)(unsigned long inst, unsigned long addr); |
| 2429 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2430 | static int |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2431 | generic_inst_dump(unsigned long adr, long count, int praddr, |
| 2432 | instruction_dump_func dump_func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2433 | { |
| 2434 | int nr, dotted; |
| 2435 | unsigned long first_adr; |
| 2436 | unsigned long inst, last_inst = 0; |
| 2437 | unsigned char val[4]; |
| 2438 | |
| 2439 | dotted = 0; |
| 2440 | for (first_adr = adr; count > 0; --count, adr += 4) { |
| 2441 | nr = mread(adr, val, 4); |
| 2442 | if (nr == 0) { |
| 2443 | if (praddr) { |
| 2444 | const char *x = fault_chars[fault_type]; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2445 | printf(REG" %s%s%s%s\n", adr, x, x, x, x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | } |
| 2447 | break; |
| 2448 | } |
| 2449 | inst = GETWORD(val); |
| 2450 | if (adr > first_adr && inst == last_inst) { |
| 2451 | if (!dotted) { |
| 2452 | printf(" ...\n"); |
| 2453 | dotted = 1; |
| 2454 | } |
| 2455 | continue; |
| 2456 | } |
| 2457 | dotted = 0; |
| 2458 | last_inst = inst; |
| 2459 | if (praddr) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2460 | printf(REG" %.8x", adr, inst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2461 | printf("\t"); |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2462 | dump_func(inst, adr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2463 | printf("\n"); |
| 2464 | } |
| 2465 | return adr - first_adr; |
| 2466 | } |
| 2467 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2468 | static int |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2469 | ppc_inst_dump(unsigned long adr, long count, int praddr) |
| 2470 | { |
| 2471 | return generic_inst_dump(adr, count, praddr, print_insn_powerpc); |
| 2472 | } |
| 2473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | void |
| 2475 | print_address(unsigned long addr) |
| 2476 | { |
| 2477 | xmon_print_symbol(addr, "\t# ", ""); |
| 2478 | } |
| 2479 | |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2480 | void |
| 2481 | dump_log_buf(void) |
| 2482 | { |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 2483 | struct kmsg_dumper dumper = { .active = 1 }; |
| 2484 | unsigned char buf[128]; |
| 2485 | size_t len; |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2486 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2487 | if (setjmp(bus_error_jmp) != 0) { |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 2488 | printf("Error dumping printk buffer!\n"); |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2489 | return; |
| 2490 | } |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2491 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2492 | catch_memory_errors = 1; |
| 2493 | sync(); |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2494 | |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 2495 | kmsg_dump_rewind_nolock(&dumper); |
Sam bobroff | 0c23a88 | 2015-10-08 11:50:24 +1100 | [diff] [blame] | 2496 | xmon_start_pagination(); |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 2497 | while (kmsg_dump_get_line_nolock(&dumper, false, buf, sizeof(buf), &len)) { |
| 2498 | buf[len] = '\0'; |
| 2499 | printf("%s", buf); |
| 2500 | } |
Sam bobroff | 0c23a88 | 2015-10-08 11:50:24 +1100 | [diff] [blame] | 2501 | xmon_end_pagination(); |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2502 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2503 | sync(); |
| 2504 | /* wait a little while to see if we get a machine check */ |
| 2505 | __delay(200); |
| 2506 | catch_memory_errors = 0; |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2507 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2508 | |
Andrew Donnellan | fde93a0 | 2016-02-09 18:17:49 +1100 | [diff] [blame] | 2509 | #ifdef CONFIG_PPC_POWERNV |
| 2510 | static void dump_opal_msglog(void) |
| 2511 | { |
| 2512 | unsigned char buf[128]; |
| 2513 | ssize_t res; |
| 2514 | loff_t pos = 0; |
| 2515 | |
| 2516 | if (!firmware_has_feature(FW_FEATURE_OPAL)) { |
| 2517 | printf("Machine is not running OPAL firmware.\n"); |
| 2518 | return; |
| 2519 | } |
| 2520 | |
| 2521 | if (setjmp(bus_error_jmp) != 0) { |
| 2522 | printf("Error dumping OPAL msglog!\n"); |
| 2523 | return; |
| 2524 | } |
| 2525 | |
| 2526 | catch_memory_errors = 1; |
| 2527 | sync(); |
| 2528 | |
| 2529 | xmon_start_pagination(); |
| 2530 | while ((res = opal_msglog_copy(buf, pos, sizeof(buf) - 1))) { |
| 2531 | if (res < 0) { |
| 2532 | printf("Error dumping OPAL msglog! Error: %zd\n", res); |
| 2533 | break; |
| 2534 | } |
| 2535 | buf[res] = '\0'; |
| 2536 | printf("%s", buf); |
| 2537 | pos += res; |
| 2538 | } |
| 2539 | xmon_end_pagination(); |
| 2540 | |
| 2541 | sync(); |
| 2542 | /* wait a little while to see if we get a machine check */ |
| 2543 | __delay(200); |
| 2544 | catch_memory_errors = 0; |
| 2545 | } |
| 2546 | #endif |
| 2547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2548 | /* |
| 2549 | * Memory operations - move, set, print differences |
| 2550 | */ |
| 2551 | static unsigned long mdest; /* destination address */ |
| 2552 | static unsigned long msrc; /* source address */ |
| 2553 | static unsigned long mval; /* byte value to set memory to */ |
| 2554 | static unsigned long mcount; /* # bytes to affect */ |
| 2555 | static unsigned long mdiffs; /* max # differences to print */ |
| 2556 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2557 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | memops(int cmd) |
| 2559 | { |
| 2560 | scanhex((void *)&mdest); |
| 2561 | if( termch != '\n' ) |
| 2562 | termch = 0; |
| 2563 | scanhex((void *)(cmd == 's'? &mval: &msrc)); |
| 2564 | if( termch != '\n' ) |
| 2565 | termch = 0; |
| 2566 | scanhex((void *)&mcount); |
| 2567 | switch( cmd ){ |
| 2568 | case 'm': |
| 2569 | memmove((void *)mdest, (void *)msrc, mcount); |
| 2570 | break; |
| 2571 | case 's': |
| 2572 | memset((void *)mdest, mval, mcount); |
| 2573 | break; |
| 2574 | case 'd': |
| 2575 | if( termch != '\n' ) |
| 2576 | termch = 0; |
| 2577 | scanhex((void *)&mdiffs); |
| 2578 | memdiffs((unsigned char *)mdest, (unsigned char *)msrc, mcount, mdiffs); |
| 2579 | break; |
| 2580 | } |
| 2581 | } |
| 2582 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2583 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2584 | memdiffs(unsigned char *p1, unsigned char *p2, unsigned nb, unsigned maxpr) |
| 2585 | { |
| 2586 | unsigned n, prt; |
| 2587 | |
| 2588 | prt = 0; |
| 2589 | for( n = nb; n > 0; --n ) |
| 2590 | if( *p1++ != *p2++ ) |
| 2591 | if( ++prt <= maxpr ) |
| 2592 | printf("%.16x %.2x # %.16x %.2x\n", p1 - 1, |
| 2593 | p1[-1], p2 - 1, p2[-1]); |
| 2594 | if( prt > maxpr ) |
| 2595 | printf("Total of %d differences\n", prt); |
| 2596 | } |
| 2597 | |
| 2598 | static unsigned mend; |
| 2599 | static unsigned mask; |
| 2600 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2601 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | memlocate(void) |
| 2603 | { |
| 2604 | unsigned a, n; |
| 2605 | unsigned char val[4]; |
| 2606 | |
| 2607 | last_cmd = "ml"; |
| 2608 | scanhex((void *)&mdest); |
| 2609 | if (termch != '\n') { |
| 2610 | termch = 0; |
| 2611 | scanhex((void *)&mend); |
| 2612 | if (termch != '\n') { |
| 2613 | termch = 0; |
| 2614 | scanhex((void *)&mval); |
| 2615 | mask = ~0; |
| 2616 | if (termch != '\n') termch = 0; |
| 2617 | scanhex((void *)&mask); |
| 2618 | } |
| 2619 | } |
| 2620 | n = 0; |
| 2621 | for (a = mdest; a < mend; a += 4) { |
| 2622 | if (mread(a, val, 4) == 4 |
| 2623 | && ((GETWORD(val) ^ mval) & mask) == 0) { |
| 2624 | printf("%.16x: %.16x\n", a, GETWORD(val)); |
| 2625 | if (++n >= 10) |
| 2626 | break; |
| 2627 | } |
| 2628 | } |
| 2629 | } |
| 2630 | |
| 2631 | static unsigned long mskip = 0x1000; |
| 2632 | static unsigned long mlim = 0xffffffff; |
| 2633 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2634 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | memzcan(void) |
| 2636 | { |
| 2637 | unsigned char v; |
| 2638 | unsigned a; |
| 2639 | int ok, ook; |
| 2640 | |
| 2641 | scanhex(&mdest); |
| 2642 | if (termch != '\n') termch = 0; |
| 2643 | scanhex(&mskip); |
| 2644 | if (termch != '\n') termch = 0; |
| 2645 | scanhex(&mlim); |
| 2646 | ook = 0; |
| 2647 | for (a = mdest; a < mlim; a += mskip) { |
| 2648 | ok = mread(a, &v, 1); |
| 2649 | if (ok && !ook) { |
| 2650 | printf("%.8x .. ", a); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2651 | } else if (!ok && ook) |
| 2652 | printf("%.8x\n", a - mskip); |
| 2653 | ook = ok; |
| 2654 | if (a + mskip < a) |
| 2655 | break; |
| 2656 | } |
| 2657 | if (ook) |
| 2658 | printf("%.8x\n", a - mskip); |
| 2659 | } |
| 2660 | |
Douglas Miller | 6dfb540 | 2015-11-23 09:01:15 -0600 | [diff] [blame] | 2661 | static void show_task(struct task_struct *tsk) |
| 2662 | { |
| 2663 | char state; |
| 2664 | |
| 2665 | /* |
| 2666 | * Cloned from kdb_task_state_char(), which is not entirely |
| 2667 | * appropriate for calling from xmon. This could be moved |
| 2668 | * to a common, generic, routine used by both. |
| 2669 | */ |
| 2670 | state = (tsk->state == 0) ? 'R' : |
| 2671 | (tsk->state < 0) ? 'U' : |
| 2672 | (tsk->state & TASK_UNINTERRUPTIBLE) ? 'D' : |
| 2673 | (tsk->state & TASK_STOPPED) ? 'T' : |
| 2674 | (tsk->state & TASK_TRACED) ? 'C' : |
| 2675 | (tsk->exit_state & EXIT_ZOMBIE) ? 'Z' : |
| 2676 | (tsk->exit_state & EXIT_DEAD) ? 'E' : |
| 2677 | (tsk->state & TASK_INTERRUPTIBLE) ? 'S' : '?'; |
| 2678 | |
| 2679 | printf("%p %016lx %6d %6d %c %2d %s\n", tsk, |
| 2680 | tsk->thread.ksp, |
| 2681 | tsk->pid, tsk->parent->pid, |
| 2682 | state, task_thread_info(tsk)->cpu, |
| 2683 | tsk->comm); |
| 2684 | } |
| 2685 | |
| 2686 | static void show_tasks(void) |
| 2687 | { |
| 2688 | unsigned long tskv; |
| 2689 | struct task_struct *tsk = NULL; |
| 2690 | |
| 2691 | printf(" task_struct ->thread.ksp PID PPID S P CMD\n"); |
| 2692 | |
| 2693 | if (scanhex(&tskv)) |
| 2694 | tsk = (struct task_struct *)tskv; |
| 2695 | |
| 2696 | if (setjmp(bus_error_jmp) != 0) { |
| 2697 | catch_memory_errors = 0; |
| 2698 | printf("*** Error dumping task %p\n", tsk); |
| 2699 | return; |
| 2700 | } |
| 2701 | |
| 2702 | catch_memory_errors = 1; |
| 2703 | sync(); |
| 2704 | |
| 2705 | if (tsk) |
| 2706 | show_task(tsk); |
| 2707 | else |
| 2708 | for_each_process(tsk) |
| 2709 | show_task(tsk); |
| 2710 | |
| 2711 | sync(); |
| 2712 | __delay(200); |
| 2713 | catch_memory_errors = 0; |
| 2714 | } |
| 2715 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2716 | static void proccall(void) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2717 | { |
| 2718 | unsigned long args[8]; |
| 2719 | unsigned long ret; |
| 2720 | int i; |
| 2721 | typedef unsigned long (*callfunc_t)(unsigned long, unsigned long, |
| 2722 | unsigned long, unsigned long, unsigned long, |
| 2723 | unsigned long, unsigned long, unsigned long); |
| 2724 | callfunc_t func; |
| 2725 | |
| 2726 | if (!scanhex(&adrs)) |
| 2727 | return; |
| 2728 | if (termch != '\n') |
| 2729 | termch = 0; |
| 2730 | for (i = 0; i < 8; ++i) |
| 2731 | args[i] = 0; |
| 2732 | for (i = 0; i < 8; ++i) { |
| 2733 | if (!scanhex(&args[i]) || termch == '\n') |
| 2734 | break; |
| 2735 | termch = 0; |
| 2736 | } |
| 2737 | func = (callfunc_t) adrs; |
| 2738 | ret = 0; |
| 2739 | if (setjmp(bus_error_jmp) == 0) { |
| 2740 | catch_memory_errors = 1; |
| 2741 | sync(); |
| 2742 | ret = func(args[0], args[1], args[2], args[3], |
| 2743 | args[4], args[5], args[6], args[7]); |
| 2744 | sync(); |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 2745 | printf("return value is 0x%lx\n", ret); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2746 | } else { |
| 2747 | printf("*** %x exception occurred\n", fault_except); |
| 2748 | } |
| 2749 | catch_memory_errors = 0; |
| 2750 | } |
| 2751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2752 | /* Input scanning routines */ |
| 2753 | int |
| 2754 | skipbl(void) |
| 2755 | { |
| 2756 | int c; |
| 2757 | |
| 2758 | if( termch != 0 ){ |
| 2759 | c = termch; |
| 2760 | termch = 0; |
| 2761 | } else |
| 2762 | c = inchar(); |
| 2763 | while( c == ' ' || c == '\t' ) |
| 2764 | c = inchar(); |
| 2765 | return c; |
| 2766 | } |
| 2767 | |
| 2768 | #define N_PTREGS 44 |
| 2769 | static char *regnames[N_PTREGS] = { |
| 2770 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 2771 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 2772 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 2773 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2774 | "pc", "msr", "or3", "ctr", "lr", "xer", "ccr", |
| 2775 | #ifdef CONFIG_PPC64 |
| 2776 | "softe", |
| 2777 | #else |
| 2778 | "mq", |
| 2779 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | "trap", "dar", "dsisr", "res" |
| 2781 | }; |
| 2782 | |
| 2783 | int |
| 2784 | scanhex(unsigned long *vp) |
| 2785 | { |
| 2786 | int c, d; |
| 2787 | unsigned long v; |
| 2788 | |
| 2789 | c = skipbl(); |
| 2790 | if (c == '%') { |
| 2791 | /* parse register name */ |
| 2792 | char regname[8]; |
| 2793 | int i; |
| 2794 | |
| 2795 | for (i = 0; i < sizeof(regname) - 1; ++i) { |
| 2796 | c = inchar(); |
| 2797 | if (!isalnum(c)) { |
| 2798 | termch = c; |
| 2799 | break; |
| 2800 | } |
| 2801 | regname[i] = c; |
| 2802 | } |
| 2803 | regname[i] = 0; |
| 2804 | for (i = 0; i < N_PTREGS; ++i) { |
| 2805 | if (strcmp(regnames[i], regname) == 0) { |
| 2806 | if (xmon_regs == NULL) { |
| 2807 | printf("regs not available\n"); |
| 2808 | return 0; |
| 2809 | } |
| 2810 | *vp = ((unsigned long *)xmon_regs)[i]; |
| 2811 | return 1; |
| 2812 | } |
| 2813 | } |
| 2814 | printf("invalid register name '%%%s'\n", regname); |
| 2815 | return 0; |
| 2816 | } |
| 2817 | |
| 2818 | /* skip leading "0x" if any */ |
| 2819 | |
| 2820 | if (c == '0') { |
| 2821 | c = inchar(); |
| 2822 | if (c == 'x') { |
| 2823 | c = inchar(); |
| 2824 | } else { |
| 2825 | d = hexdigit(c); |
| 2826 | if (d == EOF) { |
| 2827 | termch = c; |
| 2828 | *vp = 0; |
| 2829 | return 1; |
| 2830 | } |
| 2831 | } |
| 2832 | } else if (c == '$') { |
| 2833 | int i; |
| 2834 | for (i=0; i<63; i++) { |
| 2835 | c = inchar(); |
Vincent Bernat | 05b981f | 2014-07-15 13:43:47 +0200 | [diff] [blame] | 2836 | if (isspace(c) || c == '\0') { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | termch = c; |
| 2838 | break; |
| 2839 | } |
| 2840 | tmpstr[i] = c; |
| 2841 | } |
| 2842 | tmpstr[i++] = 0; |
Benjamin Herrenschmidt | 6879dc1 | 2005-06-21 17:15:30 -0700 | [diff] [blame] | 2843 | *vp = 0; |
| 2844 | if (setjmp(bus_error_jmp) == 0) { |
| 2845 | catch_memory_errors = 1; |
| 2846 | sync(); |
| 2847 | *vp = kallsyms_lookup_name(tmpstr); |
| 2848 | sync(); |
| 2849 | } |
| 2850 | catch_memory_errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2851 | if (!(*vp)) { |
| 2852 | printf("unknown symbol '%s'\n", tmpstr); |
| 2853 | return 0; |
| 2854 | } |
| 2855 | return 1; |
| 2856 | } |
| 2857 | |
| 2858 | d = hexdigit(c); |
| 2859 | if (d == EOF) { |
| 2860 | termch = c; |
| 2861 | return 0; |
| 2862 | } |
| 2863 | v = 0; |
| 2864 | do { |
| 2865 | v = (v << 4) + d; |
| 2866 | c = inchar(); |
| 2867 | d = hexdigit(c); |
| 2868 | } while (d != EOF); |
| 2869 | termch = c; |
| 2870 | *vp = v; |
| 2871 | return 1; |
| 2872 | } |
| 2873 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2874 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2875 | scannl(void) |
| 2876 | { |
| 2877 | int c; |
| 2878 | |
| 2879 | c = termch; |
| 2880 | termch = 0; |
| 2881 | while( c != '\n' ) |
| 2882 | c = inchar(); |
| 2883 | } |
| 2884 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2885 | static int hexdigit(int c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2886 | { |
| 2887 | if( '0' <= c && c <= '9' ) |
| 2888 | return c - '0'; |
| 2889 | if( 'A' <= c && c <= 'F' ) |
| 2890 | return c - ('A' - 10); |
| 2891 | if( 'a' <= c && c <= 'f' ) |
| 2892 | return c - ('a' - 10); |
| 2893 | return EOF; |
| 2894 | } |
| 2895 | |
| 2896 | void |
| 2897 | getstring(char *s, int size) |
| 2898 | { |
| 2899 | int c; |
| 2900 | |
| 2901 | c = skipbl(); |
| 2902 | do { |
| 2903 | if( size > 1 ){ |
| 2904 | *s++ = c; |
| 2905 | --size; |
| 2906 | } |
| 2907 | c = inchar(); |
| 2908 | } while( c != ' ' && c != '\t' && c != '\n' ); |
| 2909 | termch = c; |
| 2910 | *s = 0; |
| 2911 | } |
| 2912 | |
| 2913 | static char line[256]; |
| 2914 | static char *lineptr; |
| 2915 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2916 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | flush_input(void) |
| 2918 | { |
| 2919 | lineptr = NULL; |
| 2920 | } |
| 2921 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2922 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2923 | inchar(void) |
| 2924 | { |
| 2925 | if (lineptr == NULL || *lineptr == 0) { |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 2926 | if (xmon_gets(line, sizeof(line)) == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2927 | lineptr = NULL; |
| 2928 | return EOF; |
| 2929 | } |
| 2930 | lineptr = line; |
| 2931 | } |
| 2932 | return *lineptr++; |
| 2933 | } |
| 2934 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2935 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2936 | take_input(char *str) |
| 2937 | { |
| 2938 | lineptr = str; |
| 2939 | } |
| 2940 | |
| 2941 | |
| 2942 | static void |
| 2943 | symbol_lookup(void) |
| 2944 | { |
| 2945 | int type = inchar(); |
| 2946 | unsigned long addr; |
| 2947 | static char tmp[64]; |
| 2948 | |
| 2949 | switch (type) { |
| 2950 | case 'a': |
| 2951 | if (scanhex(&addr)) |
| 2952 | xmon_print_symbol(addr, ": ", "\n"); |
| 2953 | termch = 0; |
| 2954 | break; |
| 2955 | case 's': |
| 2956 | getstring(tmp, 64); |
| 2957 | if (setjmp(bus_error_jmp) == 0) { |
| 2958 | catch_memory_errors = 1; |
| 2959 | sync(); |
| 2960 | addr = kallsyms_lookup_name(tmp); |
| 2961 | if (addr) |
| 2962 | printf("%s: %lx\n", tmp, addr); |
| 2963 | else |
| 2964 | printf("Symbol '%s' not found.\n", tmp); |
| 2965 | sync(); |
| 2966 | } |
| 2967 | catch_memory_errors = 0; |
| 2968 | termch = 0; |
| 2969 | break; |
| 2970 | } |
| 2971 | } |
| 2972 | |
| 2973 | |
| 2974 | /* Print an address in numeric and symbolic form (if possible) */ |
| 2975 | static void xmon_print_symbol(unsigned long address, const char *mid, |
| 2976 | const char *after) |
| 2977 | { |
| 2978 | char *modname; |
| 2979 | const char *name = NULL; |
| 2980 | unsigned long offset, size; |
| 2981 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2982 | printf(REG, address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2983 | if (setjmp(bus_error_jmp) == 0) { |
| 2984 | catch_memory_errors = 1; |
| 2985 | sync(); |
| 2986 | name = kallsyms_lookup(address, &size, &offset, &modname, |
| 2987 | tmpstr); |
| 2988 | sync(); |
| 2989 | /* wait a little while to see if we get a machine check */ |
| 2990 | __delay(200); |
| 2991 | } |
| 2992 | |
| 2993 | catch_memory_errors = 0; |
| 2994 | |
| 2995 | if (name) { |
| 2996 | printf("%s%s+%#lx/%#lx", mid, name, offset, size); |
| 2997 | if (modname) |
| 2998 | printf(" [%s]", modname); |
| 2999 | } |
| 3000 | printf("%s", after); |
| 3001 | } |
| 3002 | |
Aneesh Kumar K.V | caca285 | 2016-04-29 23:26:07 +1000 | [diff] [blame] | 3003 | #ifdef CONFIG_PPC_STD_MMU_64 |
Michael Ellerman | 13b3d13 | 2014-07-10 12:29:20 +1000 | [diff] [blame] | 3004 | void dump_segments(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3005 | { |
| 3006 | int i; |
Anshuman Khandual | 8218a30 | 2015-07-29 12:40:04 +0530 | [diff] [blame] | 3007 | unsigned long esid,vsid; |
will schmidt | b3b9595 | 2007-12-07 08:22:23 +1100 | [diff] [blame] | 3008 | unsigned long llp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3009 | |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 3010 | printf("SLB contents of cpu 0x%x\n", smp_processor_id()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3011 | |
Michael Neuling | 584f8b7 | 2007-12-06 17:24:48 +1100 | [diff] [blame] | 3012 | for (i = 0; i < mmu_slb_size; i++) { |
will schmidt | b3b9595 | 2007-12-07 08:22:23 +1100 | [diff] [blame] | 3013 | asm volatile("slbmfee %0,%1" : "=r" (esid) : "r" (i)); |
| 3014 | asm volatile("slbmfev %0,%1" : "=r" (vsid) : "r" (i)); |
Anshuman Khandual | 8218a30 | 2015-07-29 12:40:04 +0530 | [diff] [blame] | 3015 | if (esid || vsid) { |
will schmidt | b3b9595 | 2007-12-07 08:22:23 +1100 | [diff] [blame] | 3016 | printf("%02d %016lx %016lx", i, esid, vsid); |
Anshuman Khandual | 8218a30 | 2015-07-29 12:40:04 +0530 | [diff] [blame] | 3017 | if (esid & SLB_ESID_V) { |
will schmidt | b3b9595 | 2007-12-07 08:22:23 +1100 | [diff] [blame] | 3018 | llp = vsid & SLB_VSID_LLP; |
| 3019 | if (vsid & SLB_VSID_B_1T) { |
| 3020 | printf(" 1T ESID=%9lx VSID=%13lx LLP:%3lx \n", |
| 3021 | GET_ESID_1T(esid), |
| 3022 | (vsid & ~SLB_VSID_B) >> SLB_VSID_SHIFT_1T, |
| 3023 | llp); |
| 3024 | } else { |
| 3025 | printf(" 256M ESID=%9lx VSID=%13lx LLP:%3lx \n", |
| 3026 | GET_ESID(esid), |
| 3027 | (vsid & ~SLB_VSID_B) >> SLB_VSID_SHIFT, |
| 3028 | llp); |
| 3029 | } |
| 3030 | } else |
| 3031 | printf("\n"); |
| 3032 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3033 | } |
| 3034 | } |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 3035 | #endif |
| 3036 | |
| 3037 | #ifdef CONFIG_PPC_STD_MMU_32 |
| 3038 | void dump_segments(void) |
| 3039 | { |
| 3040 | int i; |
| 3041 | |
| 3042 | printf("sr0-15 ="); |
| 3043 | for (i = 0; i < 16; ++i) |
| 3044 | printf(" %x", mfsrin(i)); |
| 3045 | printf("\n"); |
| 3046 | } |
| 3047 | #endif |
| 3048 | |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 3049 | #ifdef CONFIG_44x |
| 3050 | static void dump_tlb_44x(void) |
| 3051 | { |
| 3052 | int i; |
| 3053 | |
| 3054 | for (i = 0; i < PPC44x_TLB_SIZE; i++) { |
| 3055 | unsigned long w0,w1,w2; |
| 3056 | asm volatile("tlbre %0,%1,0" : "=r" (w0) : "r" (i)); |
| 3057 | asm volatile("tlbre %0,%1,1" : "=r" (w1) : "r" (i)); |
| 3058 | asm volatile("tlbre %0,%1,2" : "=r" (w2) : "r" (i)); |
| 3059 | printf("[%02x] %08x %08x %08x ", i, w0, w1, w2); |
| 3060 | if (w0 & PPC44x_TLB_VALID) { |
| 3061 | printf("V %08x -> %01x%08x %c%c%c%c%c", |
| 3062 | w0 & PPC44x_TLB_EPN_MASK, |
| 3063 | w1 & PPC44x_TLB_ERPN_MASK, |
| 3064 | w1 & PPC44x_TLB_RPN_MASK, |
| 3065 | (w2 & PPC44x_TLB_W) ? 'W' : 'w', |
| 3066 | (w2 & PPC44x_TLB_I) ? 'I' : 'i', |
| 3067 | (w2 & PPC44x_TLB_M) ? 'M' : 'm', |
| 3068 | (w2 & PPC44x_TLB_G) ? 'G' : 'g', |
| 3069 | (w2 & PPC44x_TLB_E) ? 'E' : 'e'); |
| 3070 | } |
| 3071 | printf("\n"); |
| 3072 | } |
| 3073 | } |
| 3074 | #endif /* CONFIG_44x */ |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 3075 | |
Benjamin Herrenschmidt | 0324715 | 2010-07-09 15:34:50 +1000 | [diff] [blame] | 3076 | #ifdef CONFIG_PPC_BOOK3E |
| 3077 | static void dump_tlb_book3e(void) |
| 3078 | { |
| 3079 | u32 mmucfg, pidmask, lpidmask; |
| 3080 | u64 ramask; |
| 3081 | int i, tlb, ntlbs, pidsz, lpidsz, rasz, lrat = 0; |
| 3082 | int mmu_version; |
| 3083 | static const char *pgsz_names[] = { |
| 3084 | " 1K", |
| 3085 | " 2K", |
| 3086 | " 4K", |
| 3087 | " 8K", |
| 3088 | " 16K", |
| 3089 | " 32K", |
| 3090 | " 64K", |
| 3091 | "128K", |
| 3092 | "256K", |
| 3093 | "512K", |
| 3094 | " 1M", |
| 3095 | " 2M", |
| 3096 | " 4M", |
| 3097 | " 8M", |
| 3098 | " 16M", |
| 3099 | " 32M", |
| 3100 | " 64M", |
| 3101 | "128M", |
| 3102 | "256M", |
| 3103 | "512M", |
| 3104 | " 1G", |
| 3105 | " 2G", |
| 3106 | " 4G", |
| 3107 | " 8G", |
| 3108 | " 16G", |
| 3109 | " 32G", |
| 3110 | " 64G", |
| 3111 | "128G", |
| 3112 | "256G", |
| 3113 | "512G", |
| 3114 | " 1T", |
| 3115 | " 2T", |
| 3116 | }; |
| 3117 | |
| 3118 | /* Gather some infos about the MMU */ |
| 3119 | mmucfg = mfspr(SPRN_MMUCFG); |
| 3120 | mmu_version = (mmucfg & 3) + 1; |
| 3121 | ntlbs = ((mmucfg >> 2) & 3) + 1; |
| 3122 | pidsz = ((mmucfg >> 6) & 0x1f) + 1; |
| 3123 | lpidsz = (mmucfg >> 24) & 0xf; |
| 3124 | rasz = (mmucfg >> 16) & 0x7f; |
| 3125 | if ((mmu_version > 1) && (mmucfg & 0x10000)) |
| 3126 | lrat = 1; |
| 3127 | printf("Book3E MMU MAV=%d.0,%d TLBs,%d-bit PID,%d-bit LPID,%d-bit RA\n", |
| 3128 | mmu_version, ntlbs, pidsz, lpidsz, rasz); |
| 3129 | pidmask = (1ul << pidsz) - 1; |
| 3130 | lpidmask = (1ul << lpidsz) - 1; |
| 3131 | ramask = (1ull << rasz) - 1; |
| 3132 | |
| 3133 | for (tlb = 0; tlb < ntlbs; tlb++) { |
| 3134 | u32 tlbcfg; |
| 3135 | int nent, assoc, new_cc = 1; |
| 3136 | printf("TLB %d:\n------\n", tlb); |
| 3137 | switch(tlb) { |
| 3138 | case 0: |
| 3139 | tlbcfg = mfspr(SPRN_TLB0CFG); |
| 3140 | break; |
| 3141 | case 1: |
| 3142 | tlbcfg = mfspr(SPRN_TLB1CFG); |
| 3143 | break; |
| 3144 | case 2: |
| 3145 | tlbcfg = mfspr(SPRN_TLB2CFG); |
| 3146 | break; |
| 3147 | case 3: |
| 3148 | tlbcfg = mfspr(SPRN_TLB3CFG); |
| 3149 | break; |
| 3150 | default: |
| 3151 | printf("Unsupported TLB number !\n"); |
| 3152 | continue; |
| 3153 | } |
| 3154 | nent = tlbcfg & 0xfff; |
| 3155 | assoc = (tlbcfg >> 24) & 0xff; |
| 3156 | for (i = 0; i < nent; i++) { |
| 3157 | u32 mas0 = MAS0_TLBSEL(tlb); |
| 3158 | u32 mas1 = MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
| 3159 | u64 mas2 = 0; |
| 3160 | u64 mas7_mas3; |
| 3161 | int esel = i, cc = i; |
| 3162 | |
| 3163 | if (assoc != 0) { |
| 3164 | cc = i / assoc; |
| 3165 | esel = i % assoc; |
| 3166 | mas2 = cc * 0x1000; |
| 3167 | } |
| 3168 | |
| 3169 | mas0 |= MAS0_ESEL(esel); |
| 3170 | mtspr(SPRN_MAS0, mas0); |
| 3171 | mtspr(SPRN_MAS1, mas1); |
| 3172 | mtspr(SPRN_MAS2, mas2); |
| 3173 | asm volatile("tlbre 0,0,0" : : : "memory"); |
| 3174 | mas1 = mfspr(SPRN_MAS1); |
| 3175 | mas2 = mfspr(SPRN_MAS2); |
| 3176 | mas7_mas3 = mfspr(SPRN_MAS7_MAS3); |
| 3177 | if (assoc && (i % assoc) == 0) |
| 3178 | new_cc = 1; |
| 3179 | if (!(mas1 & MAS1_VALID)) |
| 3180 | continue; |
| 3181 | if (assoc == 0) |
| 3182 | printf("%04x- ", i); |
| 3183 | else if (new_cc) |
| 3184 | printf("%04x-%c", cc, 'A' + esel); |
| 3185 | else |
| 3186 | printf(" |%c", 'A' + esel); |
| 3187 | new_cc = 0; |
| 3188 | printf(" %016llx %04x %s %c%c AS%c", |
| 3189 | mas2 & ~0x3ffull, |
| 3190 | (mas1 >> 16) & 0x3fff, |
| 3191 | pgsz_names[(mas1 >> 7) & 0x1f], |
| 3192 | mas1 & MAS1_IND ? 'I' : ' ', |
| 3193 | mas1 & MAS1_IPROT ? 'P' : ' ', |
| 3194 | mas1 & MAS1_TS ? '1' : '0'); |
| 3195 | printf(" %c%c%c%c%c%c%c", |
| 3196 | mas2 & MAS2_X0 ? 'a' : ' ', |
| 3197 | mas2 & MAS2_X1 ? 'v' : ' ', |
| 3198 | mas2 & MAS2_W ? 'w' : ' ', |
| 3199 | mas2 & MAS2_I ? 'i' : ' ', |
| 3200 | mas2 & MAS2_M ? 'm' : ' ', |
| 3201 | mas2 & MAS2_G ? 'g' : ' ', |
| 3202 | mas2 & MAS2_E ? 'e' : ' '); |
| 3203 | printf(" %016llx", mas7_mas3 & ramask & ~0x7ffull); |
| 3204 | if (mas1 & MAS1_IND) |
| 3205 | printf(" %s\n", |
| 3206 | pgsz_names[(mas7_mas3 >> 1) & 0x1f]); |
| 3207 | else |
| 3208 | printf(" U%c%c%c S%c%c%c\n", |
| 3209 | mas7_mas3 & MAS3_UX ? 'x' : ' ', |
| 3210 | mas7_mas3 & MAS3_UW ? 'w' : ' ', |
| 3211 | mas7_mas3 & MAS3_UR ? 'r' : ' ', |
| 3212 | mas7_mas3 & MAS3_SX ? 'x' : ' ', |
| 3213 | mas7_mas3 & MAS3_SW ? 'w' : ' ', |
| 3214 | mas7_mas3 & MAS3_SR ? 'r' : ' '); |
| 3215 | } |
| 3216 | } |
| 3217 | } |
| 3218 | #endif /* CONFIG_PPC_BOOK3E */ |
| 3219 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 3220 | static void xmon_init(int enable) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3221 | { |
Olaf Hering | b13cfd17 | 2005-08-04 19:26:42 +0200 | [diff] [blame] | 3222 | if (enable) { |
| 3223 | __debugger = xmon; |
| 3224 | __debugger_ipi = xmon_ipi; |
| 3225 | __debugger_bpt = xmon_bpt; |
| 3226 | __debugger_sstep = xmon_sstep; |
| 3227 | __debugger_iabr_match = xmon_iabr_match; |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 3228 | __debugger_break_match = xmon_break_match; |
Olaf Hering | b13cfd17 | 2005-08-04 19:26:42 +0200 | [diff] [blame] | 3229 | __debugger_fault_handler = xmon_fault_handler; |
| 3230 | } else { |
| 3231 | __debugger = NULL; |
| 3232 | __debugger_ipi = NULL; |
| 3233 | __debugger_bpt = NULL; |
| 3234 | __debugger_sstep = NULL; |
| 3235 | __debugger_iabr_match = NULL; |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 3236 | __debugger_break_match = NULL; |
Olaf Hering | b13cfd17 | 2005-08-04 19:26:42 +0200 | [diff] [blame] | 3237 | __debugger_fault_handler = NULL; |
| 3238 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3239 | } |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 3240 | |
| 3241 | #ifdef CONFIG_MAGIC_SYSRQ |
Dmitry Torokhov | 1495cc9 | 2010-08-17 21:15:46 -0700 | [diff] [blame] | 3242 | static void sysrq_handle_xmon(int key) |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 3243 | { |
| 3244 | /* ensure xmon is enabled */ |
| 3245 | xmon_init(1); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 3246 | debugger(get_irq_regs()); |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 3247 | } |
| 3248 | |
Dmitry Torokhov | 1495cc9 | 2010-08-17 21:15:46 -0700 | [diff] [blame] | 3249 | static struct sysrq_key_op sysrq_xmon_op = { |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 3250 | .handler = sysrq_handle_xmon, |
zhangwei(Jovi) | 90a102e | 2013-04-30 15:28:54 -0700 | [diff] [blame] | 3251 | .help_msg = "xmon(x)", |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 3252 | .action_msg = "Entering xmon", |
| 3253 | }; |
| 3254 | |
| 3255 | static int __init setup_xmon_sysrq(void) |
| 3256 | { |
| 3257 | register_sysrq_key('x', &sysrq_xmon_op); |
| 3258 | return 0; |
| 3259 | } |
| 3260 | __initcall(setup_xmon_sysrq); |
| 3261 | #endif /* CONFIG_MAGIC_SYSRQ */ |
Michael Ellerman | 47679283 | 2006-10-03 14:12:08 +1000 | [diff] [blame] | 3262 | |
Olaf Hering | f5e6a28 | 2007-06-24 16:57:08 +1000 | [diff] [blame] | 3263 | static int __initdata xmon_early, xmon_off; |
Michael Ellerman | 47679283 | 2006-10-03 14:12:08 +1000 | [diff] [blame] | 3264 | |
| 3265 | static int __init early_parse_xmon(char *p) |
| 3266 | { |
| 3267 | if (!p || strncmp(p, "early", 5) == 0) { |
| 3268 | /* just "xmon" is equivalent to "xmon=early" */ |
| 3269 | xmon_init(1); |
| 3270 | xmon_early = 1; |
| 3271 | } else if (strncmp(p, "on", 2) == 0) |
| 3272 | xmon_init(1); |
| 3273 | else if (strncmp(p, "off", 3) == 0) |
| 3274 | xmon_off = 1; |
| 3275 | else if (strncmp(p, "nobt", 4) == 0) |
| 3276 | xmon_no_auto_backtrace = 1; |
| 3277 | else |
| 3278 | return 1; |
| 3279 | |
| 3280 | return 0; |
| 3281 | } |
| 3282 | early_param("xmon", early_parse_xmon); |
| 3283 | |
| 3284 | void __init xmon_setup(void) |
| 3285 | { |
| 3286 | #ifdef CONFIG_XMON_DEFAULT |
| 3287 | if (!xmon_off) |
| 3288 | xmon_init(1); |
| 3289 | #endif |
| 3290 | if (xmon_early) |
| 3291 | debugger(NULL); |
| 3292 | } |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3293 | |
Arnd Bergmann | e055595 | 2006-11-27 19:18:55 +0100 | [diff] [blame] | 3294 | #ifdef CONFIG_SPU_BASE |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3295 | |
| 3296 | struct spu_info { |
| 3297 | struct spu *spu; |
| 3298 | u64 saved_mfc_sr1_RW; |
| 3299 | u32 saved_spu_runcntl_RW; |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3300 | unsigned long dump_addr; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3301 | u8 stopped_ok; |
| 3302 | }; |
| 3303 | |
| 3304 | #define XMON_NUM_SPUS 16 /* Enough for current hardware */ |
| 3305 | |
| 3306 | static struct spu_info spu_info[XMON_NUM_SPUS]; |
| 3307 | |
| 3308 | void xmon_register_spus(struct list_head *list) |
| 3309 | { |
| 3310 | struct spu *spu; |
| 3311 | |
| 3312 | list_for_each_entry(spu, list, full_list) { |
| 3313 | if (spu->number >= XMON_NUM_SPUS) { |
| 3314 | WARN_ON(1); |
| 3315 | continue; |
| 3316 | } |
| 3317 | |
| 3318 | spu_info[spu->number].spu = spu; |
| 3319 | spu_info[spu->number].stopped_ok = 0; |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3320 | spu_info[spu->number].dump_addr = (unsigned long) |
| 3321 | spu_info[spu->number].spu->local_store; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3322 | } |
| 3323 | } |
| 3324 | |
| 3325 | static void stop_spus(void) |
| 3326 | { |
| 3327 | struct spu *spu; |
| 3328 | int i; |
| 3329 | u64 tmp; |
| 3330 | |
| 3331 | for (i = 0; i < XMON_NUM_SPUS; i++) { |
| 3332 | if (!spu_info[i].spu) |
| 3333 | continue; |
| 3334 | |
| 3335 | if (setjmp(bus_error_jmp) == 0) { |
| 3336 | catch_memory_errors = 1; |
| 3337 | sync(); |
| 3338 | |
| 3339 | spu = spu_info[i].spu; |
| 3340 | |
| 3341 | spu_info[i].saved_spu_runcntl_RW = |
| 3342 | in_be32(&spu->problem->spu_runcntl_RW); |
| 3343 | |
| 3344 | tmp = spu_mfc_sr1_get(spu); |
| 3345 | spu_info[i].saved_mfc_sr1_RW = tmp; |
| 3346 | |
| 3347 | tmp &= ~MFC_STATE1_MASTER_RUN_CONTROL_MASK; |
| 3348 | spu_mfc_sr1_set(spu, tmp); |
| 3349 | |
| 3350 | sync(); |
| 3351 | __delay(200); |
| 3352 | |
| 3353 | spu_info[i].stopped_ok = 1; |
Michael Ellerman | 2a14442 | 2006-11-23 00:46:40 +0100 | [diff] [blame] | 3354 | |
| 3355 | printf("Stopped spu %.2d (was %s)\n", i, |
| 3356 | spu_info[i].saved_spu_runcntl_RW ? |
| 3357 | "running" : "stopped"); |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3358 | } else { |
| 3359 | catch_memory_errors = 0; |
| 3360 | printf("*** Error stopping spu %.2d\n", i); |
| 3361 | } |
| 3362 | catch_memory_errors = 0; |
| 3363 | } |
| 3364 | } |
| 3365 | |
| 3366 | static void restart_spus(void) |
| 3367 | { |
| 3368 | struct spu *spu; |
| 3369 | int i; |
| 3370 | |
| 3371 | for (i = 0; i < XMON_NUM_SPUS; i++) { |
| 3372 | if (!spu_info[i].spu) |
| 3373 | continue; |
| 3374 | |
| 3375 | if (!spu_info[i].stopped_ok) { |
| 3376 | printf("*** Error, spu %d was not successfully stopped" |
| 3377 | ", not restarting\n", i); |
| 3378 | continue; |
| 3379 | } |
| 3380 | |
| 3381 | if (setjmp(bus_error_jmp) == 0) { |
| 3382 | catch_memory_errors = 1; |
| 3383 | sync(); |
| 3384 | |
| 3385 | spu = spu_info[i].spu; |
| 3386 | spu_mfc_sr1_set(spu, spu_info[i].saved_mfc_sr1_RW); |
| 3387 | out_be32(&spu->problem->spu_runcntl_RW, |
| 3388 | spu_info[i].saved_spu_runcntl_RW); |
| 3389 | |
| 3390 | sync(); |
| 3391 | __delay(200); |
| 3392 | |
| 3393 | printf("Restarted spu %.2d\n", i); |
| 3394 | } else { |
| 3395 | catch_memory_errors = 0; |
| 3396 | printf("*** Error restarting spu %.2d\n", i); |
| 3397 | } |
| 3398 | catch_memory_errors = 0; |
| 3399 | } |
| 3400 | } |
| 3401 | |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3402 | #define DUMP_WIDTH 23 |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3403 | #define DUMP_VALUE(format, field, value) \ |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3404 | do { \ |
| 3405 | if (setjmp(bus_error_jmp) == 0) { \ |
| 3406 | catch_memory_errors = 1; \ |
| 3407 | sync(); \ |
| 3408 | printf(" %-*s = "format"\n", DUMP_WIDTH, \ |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3409 | #field, value); \ |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3410 | sync(); \ |
| 3411 | __delay(200); \ |
| 3412 | } else { \ |
| 3413 | catch_memory_errors = 0; \ |
| 3414 | printf(" %-*s = *** Error reading field.\n", \ |
| 3415 | DUMP_WIDTH, #field); \ |
| 3416 | } \ |
| 3417 | catch_memory_errors = 0; \ |
| 3418 | } while (0) |
| 3419 | |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3420 | #define DUMP_FIELD(obj, format, field) \ |
| 3421 | DUMP_VALUE(format, field, obj->field) |
| 3422 | |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3423 | static void dump_spu_fields(struct spu *spu) |
| 3424 | { |
| 3425 | printf("Dumping spu fields at address %p:\n", spu); |
| 3426 | |
| 3427 | DUMP_FIELD(spu, "0x%x", number); |
| 3428 | DUMP_FIELD(spu, "%s", name); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3429 | DUMP_FIELD(spu, "0x%lx", local_store_phys); |
| 3430 | DUMP_FIELD(spu, "0x%p", local_store); |
| 3431 | DUMP_FIELD(spu, "0x%lx", ls_size); |
| 3432 | DUMP_FIELD(spu, "0x%x", node); |
| 3433 | DUMP_FIELD(spu, "0x%lx", flags); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3434 | DUMP_FIELD(spu, "%d", class_0_pending); |
Luke Browning | f3d69e0 | 2008-04-27 18:41:55 +0000 | [diff] [blame] | 3435 | DUMP_FIELD(spu, "0x%lx", class_0_dar); |
Luke Browning | f3d69e0 | 2008-04-27 18:41:55 +0000 | [diff] [blame] | 3436 | DUMP_FIELD(spu, "0x%lx", class_1_dar); |
| 3437 | DUMP_FIELD(spu, "0x%lx", class_1_dsisr); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3438 | DUMP_FIELD(spu, "0x%lx", irqs[0]); |
| 3439 | DUMP_FIELD(spu, "0x%lx", irqs[1]); |
| 3440 | DUMP_FIELD(spu, "0x%lx", irqs[2]); |
| 3441 | DUMP_FIELD(spu, "0x%x", slb_replace); |
| 3442 | DUMP_FIELD(spu, "%d", pid); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3443 | DUMP_FIELD(spu, "0x%p", mm); |
| 3444 | DUMP_FIELD(spu, "0x%p", ctx); |
| 3445 | DUMP_FIELD(spu, "0x%p", rq); |
| 3446 | DUMP_FIELD(spu, "0x%p", timestamp); |
| 3447 | DUMP_FIELD(spu, "0x%lx", problem_phys); |
| 3448 | DUMP_FIELD(spu, "0x%p", problem); |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3449 | DUMP_VALUE("0x%x", problem->spu_runcntl_RW, |
| 3450 | in_be32(&spu->problem->spu_runcntl_RW)); |
| 3451 | DUMP_VALUE("0x%x", problem->spu_status_R, |
| 3452 | in_be32(&spu->problem->spu_status_R)); |
| 3453 | DUMP_VALUE("0x%x", problem->spu_npc_RW, |
| 3454 | in_be32(&spu->problem->spu_npc_RW)); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3455 | DUMP_FIELD(spu, "0x%p", priv2); |
Michael Ellerman | a985239 | 2006-11-23 00:46:50 +0100 | [diff] [blame] | 3456 | DUMP_FIELD(spu, "0x%p", pdata); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3457 | } |
| 3458 | |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3459 | int |
| 3460 | spu_inst_dump(unsigned long adr, long count, int praddr) |
| 3461 | { |
| 3462 | return generic_inst_dump(adr, count, praddr, print_insn_spu); |
| 3463 | } |
| 3464 | |
| 3465 | static void dump_spu_ls(unsigned long num, int subcmd) |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3466 | { |
| 3467 | unsigned long offset, addr, ls_addr; |
| 3468 | |
| 3469 | if (setjmp(bus_error_jmp) == 0) { |
| 3470 | catch_memory_errors = 1; |
| 3471 | sync(); |
| 3472 | ls_addr = (unsigned long)spu_info[num].spu->local_store; |
| 3473 | sync(); |
| 3474 | __delay(200); |
| 3475 | } else { |
| 3476 | catch_memory_errors = 0; |
| 3477 | printf("*** Error: accessing spu info for spu %d\n", num); |
| 3478 | return; |
| 3479 | } |
| 3480 | catch_memory_errors = 0; |
| 3481 | |
| 3482 | if (scanhex(&offset)) |
| 3483 | addr = ls_addr + offset; |
| 3484 | else |
| 3485 | addr = spu_info[num].dump_addr; |
| 3486 | |
| 3487 | if (addr >= ls_addr + LS_SIZE) { |
| 3488 | printf("*** Error: address outside of local store\n"); |
| 3489 | return; |
| 3490 | } |
| 3491 | |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3492 | switch (subcmd) { |
| 3493 | case 'i': |
| 3494 | addr += spu_inst_dump(addr, 16, 1); |
| 3495 | last_cmd = "sdi\n"; |
| 3496 | break; |
| 3497 | default: |
| 3498 | prdump(addr, 64); |
| 3499 | addr += 64; |
| 3500 | last_cmd = "sd\n"; |
| 3501 | break; |
| 3502 | } |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3503 | |
| 3504 | spu_info[num].dump_addr = addr; |
| 3505 | } |
| 3506 | |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3507 | static int do_spu_cmd(void) |
| 3508 | { |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3509 | static unsigned long num = 0; |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3510 | int cmd, subcmd = 0; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3511 | |
| 3512 | cmd = inchar(); |
| 3513 | switch (cmd) { |
| 3514 | case 's': |
| 3515 | stop_spus(); |
| 3516 | break; |
| 3517 | case 'r': |
| 3518 | restart_spus(); |
| 3519 | break; |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3520 | case 'd': |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3521 | subcmd = inchar(); |
| 3522 | if (isxdigit(subcmd) || subcmd == '\n') |
| 3523 | termch = subcmd; |
| 3524 | case 'f': |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3525 | scanhex(&num); |
| 3526 | if (num >= XMON_NUM_SPUS || !spu_info[num].spu) { |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3527 | printf("*** Error: invalid spu number\n"); |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3528 | return 0; |
| 3529 | } |
| 3530 | |
| 3531 | switch (cmd) { |
| 3532 | case 'f': |
| 3533 | dump_spu_fields(spu_info[num].spu); |
| 3534 | break; |
| 3535 | default: |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3536 | dump_spu_ls(num, subcmd); |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3537 | break; |
| 3538 | } |
| 3539 | |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3540 | break; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3541 | default: |
| 3542 | return -1; |
| 3543 | } |
| 3544 | |
| 3545 | return 0; |
| 3546 | } |
Arnd Bergmann | e055595 | 2006-11-27 19:18:55 +0100 | [diff] [blame] | 3547 | #else /* ! CONFIG_SPU_BASE */ |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3548 | static int do_spu_cmd(void) |
| 3549 | { |
| 3550 | return -1; |
| 3551 | } |
| 3552 | #endif |