Adrian Bunk | b00dc83 | 2008-05-19 16:52:27 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * linux/arch/sparc64/kernel/setup.c |
| 3 | * |
| 4 | * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) |
| 5 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 6 | */ |
| 7 | |
| 8 | #include <linux/errno.h> |
| 9 | #include <linux/sched.h> |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/stddef.h> |
| 13 | #include <linux/unistd.h> |
| 14 | #include <linux/ptrace.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <asm/smp.h> |
| 16 | #include <linux/user.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 17 | #include <linux/screen_info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/fs.h> |
| 20 | #include <linux/seq_file.h> |
| 21 | #include <linux/syscalls.h> |
| 22 | #include <linux/kdev_t.h> |
| 23 | #include <linux/major.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/inet.h> |
| 27 | #include <linux/console.h> |
| 28 | #include <linux/root_dev.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/cpu.h> |
| 31 | #include <linux/initrd.h> |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 32 | #include <linux/module.h> |
David S. Miller | ef3e035 | 2014-10-23 12:58:13 -0700 | [diff] [blame] | 33 | #include <linux/start_kernel.h> |
Atish Patra | ebb99a4 | 2016-09-15 14:54:41 -0600 | [diff] [blame] | 34 | #include <linux/bootmem.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <asm/io.h> |
| 37 | #include <asm/processor.h> |
| 38 | #include <asm/oplib.h> |
| 39 | #include <asm/page.h> |
| 40 | #include <asm/pgtable.h> |
| 41 | #include <asm/idprom.h> |
| 42 | #include <asm/head.h> |
| 43 | #include <asm/starfire.h> |
| 44 | #include <asm/mmu_context.h> |
| 45 | #include <asm/timer.h> |
| 46 | #include <asm/sections.h> |
| 47 | #include <asm/setup.h> |
| 48 | #include <asm/mmu.h> |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 49 | #include <asm/ns87303.h> |
David S. Miller | c57ec52 | 2009-11-27 17:33:43 -0800 | [diff] [blame] | 50 | #include <asm/btext.h> |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 51 | #include <asm/elf.h> |
| 52 | #include <asm/mdesc.h> |
David Howells | d550bbd | 2012-03-28 18:30:03 +0100 | [diff] [blame] | 53 | #include <asm/cacheflush.h> |
Atish Patra | ebb99a4 | 2016-09-15 14:54:41 -0600 | [diff] [blame] | 54 | #include <asm/dma.h> |
| 55 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | #ifdef CONFIG_IP_PNP |
| 58 | #include <net/ipconfig.h> |
| 59 | #endif |
| 60 | |
David S. Miller | 3d5ae6b | 2008-03-25 21:51:40 -0700 | [diff] [blame] | 61 | #include "entry.h" |
Sam Ravnborg | 53ae341 | 2008-12-07 00:02:08 -0800 | [diff] [blame] | 62 | #include "kernel.h" |
David S. Miller | 3d5ae6b | 2008-03-25 21:51:40 -0700 | [diff] [blame] | 63 | |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 64 | /* Used to synchronize accesses to NatSemi SUPER I/O chip configure |
| 65 | * operations in asm/ns87303.h |
| 66 | */ |
| 67 | DEFINE_SPINLOCK(ns87303_lock); |
Sam Ravnborg | 917c366 | 2009-01-08 16:58:20 -0800 | [diff] [blame] | 68 | EXPORT_SYMBOL(ns87303_lock); |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | struct screen_info screen_info = { |
| 71 | 0, 0, /* orig-x, orig-y */ |
| 72 | 0, /* unused */ |
| 73 | 0, /* orig-video-page */ |
| 74 | 0, /* orig-video-mode */ |
| 75 | 128, /* orig-video-cols */ |
| 76 | 0, 0, 0, /* unused, ega_bx, unused */ |
| 77 | 54, /* orig-video-lines */ |
| 78 | 0, /* orig-video-isVGA */ |
| 79 | 16 /* orig-video-points */ |
| 80 | }; |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | static void |
Joe Perches | 9ef595d | 2016-03-10 15:21:43 -0800 | [diff] [blame] | 83 | prom_console_write(struct console *con, const char *s, unsigned int n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | { |
| 85 | prom_write(s, n); |
| 86 | } |
| 87 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | /* Exported for mm/init.c:paging_init. */ |
| 89 | unsigned long cmdline_memory_size = 0; |
| 90 | |
David S. Miller | 3c62a2d | 2008-02-17 23:22:50 -0800 | [diff] [blame] | 91 | static struct console prom_early_console = { |
| 92 | .name = "earlyprom", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | .write = prom_console_write, |
David S. Miller | db9a7fb | 2008-04-23 22:22:29 -0700 | [diff] [blame] | 94 | .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | .index = -1, |
| 96 | }; |
| 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | /* |
| 99 | * Process kernel command line switches that are specific to the |
| 100 | * SPARC or that require special low-level processing. |
| 101 | */ |
| 102 | static void __init process_switch(char c) |
| 103 | { |
| 104 | switch (c) { |
| 105 | case 'd': |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | case 's': |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | break; |
| 108 | case 'h': |
| 109 | prom_printf("boot_flags_init: Halt!\n"); |
| 110 | prom_halt(); |
| 111 | break; |
| 112 | case 'p': |
David S. Miller | 11032c1 | 2011-09-21 12:48:06 -0700 | [diff] [blame] | 113 | prom_early_console.flags &= ~CON_BOOT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | break; |
David S. Miller | 816242d | 2005-05-23 15:52:08 -0700 | [diff] [blame] | 115 | case 'P': |
| 116 | /* Force UltraSPARC-III P-Cache on. */ |
| 117 | if (tlb_type != cheetah) { |
| 118 | printk("BOOT: Ignoring P-Cache force option.\n"); |
| 119 | break; |
| 120 | } |
| 121 | cheetah_pcache_forced_on = 1; |
Rusty Russell | 373d4d0 | 2013-01-21 17:17:39 +1030 | [diff] [blame] | 122 | add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE); |
David S. Miller | 816242d | 2005-05-23 15:52:08 -0700 | [diff] [blame] | 123 | cheetah_enable_pcache(); |
| 124 | break; |
| 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | default: |
| 127 | printk("Unknown boot switch (-%c)\n", c); |
| 128 | break; |
| 129 | } |
| 130 | } |
| 131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | static void __init boot_flags_init(char *commands) |
| 133 | { |
| 134 | while (*commands) { |
| 135 | /* Move to the start of the next "argument". */ |
| 136 | while (*commands && *commands == ' ') |
| 137 | commands++; |
| 138 | |
| 139 | /* Process any command switches, otherwise skip it. */ |
| 140 | if (*commands == '\0') |
| 141 | break; |
| 142 | if (*commands == '-') { |
| 143 | commands++; |
| 144 | while (*commands && *commands != ' ') |
| 145 | process_switch(*commands++); |
| 146 | continue; |
| 147 | } |
bob picco | 7c21d53 | 2014-09-16 09:29:54 -0400 | [diff] [blame] | 148 | if (!strncmp(commands, "mem=", 4)) |
| 149 | cmdline_memory_size = memparse(commands + 4, &commands); |
| 150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | while (*commands && *commands != ' ') |
| 152 | commands++; |
| 153 | } |
| 154 | } |
| 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | extern unsigned short root_flags; |
| 157 | extern unsigned short root_dev; |
| 158 | extern unsigned short ram_flags; |
| 159 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
| 160 | #define RAMDISK_PROMPT_FLAG 0x8000 |
| 161 | #define RAMDISK_LOAD_FLAG 0x4000 |
| 162 | |
| 163 | extern int root_mountflags; |
| 164 | |
| 165 | char reboot_command[COMMAND_LINE_SIZE]; |
| 166 | |
| 167 | static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; |
| 168 | |
David S. Miller | ef3e035 | 2014-10-23 12:58:13 -0700 | [diff] [blame] | 169 | static void __init per_cpu_patch(void) |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 170 | { |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 171 | struct cpuid_patch_entry *p; |
| 172 | unsigned long ver; |
| 173 | int is_jbus; |
| 174 | |
| 175 | if (tlb_type == spitfire && !this_is_starfire) |
| 176 | return; |
| 177 | |
David S. Miller | d82ace7 | 2006-02-09 02:52:44 -0800 | [diff] [blame] | 178 | is_jbus = 0; |
| 179 | if (tlb_type != hypervisor) { |
| 180 | __asm__ ("rdpr %%ver, %0" : "=r" (ver)); |
David S. Miller | ebd8c56 | 2006-02-17 08:38:06 -0800 | [diff] [blame] | 181 | is_jbus = ((ver >> 32UL) == __JALAPENO_ID || |
| 182 | (ver >> 32UL) == __SERRANO_ID); |
David S. Miller | d82ace7 | 2006-02-09 02:52:44 -0800 | [diff] [blame] | 183 | } |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 184 | |
| 185 | p = &__cpuid_patch; |
| 186 | while (p < &__cpuid_patch_end) { |
| 187 | unsigned long addr = p->addr; |
| 188 | unsigned int *insns; |
| 189 | |
| 190 | switch (tlb_type) { |
| 191 | case spitfire: |
| 192 | insns = &p->starfire[0]; |
| 193 | break; |
| 194 | case cheetah: |
| 195 | case cheetah_plus: |
| 196 | if (is_jbus) |
| 197 | insns = &p->cheetah_jbus[0]; |
| 198 | else |
| 199 | insns = &p->cheetah_safari[0]; |
| 200 | break; |
David S. Miller | d96b815 | 2006-02-04 15:40:53 -0800 | [diff] [blame] | 201 | case hypervisor: |
| 202 | insns = &p->sun4v[0]; |
| 203 | break; |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 204 | default: |
| 205 | prom_printf("Unknown cpu type, halting.\n"); |
| 206 | prom_halt(); |
Joe Perches | 6cb79b3 | 2011-06-03 14:45:23 +0000 | [diff] [blame] | 207 | } |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 208 | |
| 209 | *(unsigned int *) (addr + 0) = insns[0]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 210 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 211 | __asm__ __volatile__("flush %0" : : "r" (addr + 0)); |
| 212 | |
| 213 | *(unsigned int *) (addr + 4) = insns[1]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 214 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 215 | __asm__ __volatile__("flush %0" : : "r" (addr + 4)); |
| 216 | |
| 217 | *(unsigned int *) (addr + 8) = insns[2]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 218 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 219 | __asm__ __volatile__("flush %0" : : "r" (addr + 8)); |
| 220 | |
| 221 | *(unsigned int *) (addr + 12) = insns[3]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 222 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 223 | __asm__ __volatile__("flush %0" : : "r" (addr + 12)); |
| 224 | |
| 225 | p++; |
| 226 | } |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 227 | } |
| 228 | |
David S. Miller | 0b64120 | 2011-11-17 22:44:58 -0800 | [diff] [blame] | 229 | void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *start, |
| 230 | struct sun4v_1insn_patch_entry *end) |
| 231 | { |
| 232 | while (start < end) { |
| 233 | unsigned long addr = start->addr; |
| 234 | |
| 235 | *(unsigned int *) (addr + 0) = start->insn; |
| 236 | wmb(); |
| 237 | __asm__ __volatile__("flush %0" : : "r" (addr + 0)); |
| 238 | |
| 239 | start++; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start, |
| 244 | struct sun4v_2insn_patch_entry *end) |
| 245 | { |
| 246 | while (start < end) { |
| 247 | unsigned long addr = start->addr; |
| 248 | |
| 249 | *(unsigned int *) (addr + 0) = start->insns[0]; |
| 250 | wmb(); |
| 251 | __asm__ __volatile__("flush %0" : : "r" (addr + 0)); |
| 252 | |
| 253 | *(unsigned int *) (addr + 4) = start->insns[1]; |
| 254 | wmb(); |
| 255 | __asm__ __volatile__("flush %0" : : "r" (addr + 4)); |
| 256 | |
| 257 | start++; |
| 258 | } |
| 259 | } |
| 260 | |
Khalid Aziz | 494e5b6 | 2015-05-27 10:00:46 -0600 | [diff] [blame] | 261 | void sun_m7_patch_2insn_range(struct sun4v_2insn_patch_entry *start, |
| 262 | struct sun4v_2insn_patch_entry *end) |
| 263 | { |
| 264 | while (start < end) { |
| 265 | unsigned long addr = start->addr; |
| 266 | |
| 267 | *(unsigned int *) (addr + 0) = start->insns[0]; |
| 268 | wmb(); |
| 269 | __asm__ __volatile__("flush %0" : : "r" (addr + 0)); |
| 270 | |
| 271 | *(unsigned int *) (addr + 4) = start->insns[1]; |
| 272 | wmb(); |
| 273 | __asm__ __volatile__("flush %0" : : "r" (addr + 4)); |
| 274 | |
| 275 | start++; |
| 276 | } |
| 277 | } |
| 278 | |
David S. Miller | ef3e035 | 2014-10-23 12:58:13 -0700 | [diff] [blame] | 279 | static void __init sun4v_patch(void) |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 280 | { |
David S. Miller | c7754d4 | 2007-05-15 17:03:54 -0700 | [diff] [blame] | 281 | extern void sun4v_hvapi_init(void); |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 282 | |
| 283 | if (tlb_type != hypervisor) |
| 284 | return; |
| 285 | |
David S. Miller | 0b64120 | 2011-11-17 22:44:58 -0800 | [diff] [blame] | 286 | sun4v_patch_1insn_range(&__sun4v_1insn_patch, |
| 287 | &__sun4v_1insn_patch_end); |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 288 | |
David S. Miller | 0b64120 | 2011-11-17 22:44:58 -0800 | [diff] [blame] | 289 | sun4v_patch_2insn_range(&__sun4v_2insn_patch, |
| 290 | &__sun4v_2insn_patch_end); |
Khalid Aziz | c5b8b5b | 2016-04-19 11:12:54 -0600 | [diff] [blame] | 291 | if (sun4v_chip_type == SUN4V_CHIP_SPARC_M7 || |
| 292 | sun4v_chip_type == SUN4V_CHIP_SPARC_SN) |
Khalid Aziz | 494e5b6 | 2015-05-27 10:00:46 -0600 | [diff] [blame] | 293 | sun_m7_patch_2insn_range(&__sun_m7_2insn_patch, |
| 294 | &__sun_m7_2insn_patch_end); |
David S. Miller | c7754d4 | 2007-05-15 17:03:54 -0700 | [diff] [blame] | 295 | |
| 296 | sun4v_hvapi_init(); |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 297 | } |
| 298 | |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 299 | static void __init popc_patch(void) |
| 300 | { |
| 301 | struct popc_3insn_patch_entry *p3; |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 302 | struct popc_6insn_patch_entry *p6; |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 303 | |
| 304 | p3 = &__popc_3insn_patch; |
| 305 | while (p3 < &__popc_3insn_patch_end) { |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 306 | unsigned long i, addr = p3->addr; |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 307 | |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 308 | for (i = 0; i < 3; i++) { |
| 309 | *(unsigned int *) (addr + (i * 4)) = p3->insns[i]; |
| 310 | wmb(); |
| 311 | __asm__ __volatile__("flush %0" |
| 312 | : : "r" (addr + (i * 4))); |
| 313 | } |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 314 | |
| 315 | p3++; |
| 316 | } |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 317 | |
| 318 | p6 = &__popc_6insn_patch; |
| 319 | while (p6 < &__popc_6insn_patch_end) { |
| 320 | unsigned long i, addr = p6->addr; |
| 321 | |
| 322 | for (i = 0; i < 6; i++) { |
| 323 | *(unsigned int *) (addr + (i * 4)) = p6->insns[i]; |
| 324 | wmb(); |
| 325 | __asm__ __volatile__("flush %0" |
| 326 | : : "r" (addr + (i * 4))); |
| 327 | } |
| 328 | |
| 329 | p6++; |
| 330 | } |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 331 | } |
| 332 | |
David S. Miller | e9b9eb5 | 2012-10-27 23:00:41 -0700 | [diff] [blame] | 333 | static void __init pause_patch(void) |
| 334 | { |
| 335 | struct pause_patch_entry *p; |
| 336 | |
David S. Miller | 187818c | 2012-10-28 13:04:47 -0700 | [diff] [blame] | 337 | p = &__pause_3insn_patch; |
| 338 | while (p < &__pause_3insn_patch_end) { |
David S. Miller | e9b9eb5 | 2012-10-27 23:00:41 -0700 | [diff] [blame] | 339 | unsigned long i, addr = p->addr; |
| 340 | |
| 341 | for (i = 0; i < 3; i++) { |
| 342 | *(unsigned int *) (addr + (i * 4)) = p->insns[i]; |
| 343 | wmb(); |
| 344 | __asm__ __volatile__("flush %0" |
| 345 | : : "r" (addr + (i * 4))); |
| 346 | } |
| 347 | |
| 348 | p++; |
| 349 | } |
| 350 | } |
| 351 | |
David S. Miller | ef3e035 | 2014-10-23 12:58:13 -0700 | [diff] [blame] | 352 | void __init start_early_boot(void) |
David S. Miller | 951bc82 | 2006-05-31 01:24:02 -0700 | [diff] [blame] | 353 | { |
David S. Miller | ef3e035 | 2014-10-23 12:58:13 -0700 | [diff] [blame] | 354 | int cpu; |
| 355 | |
| 356 | check_if_starfire(); |
| 357 | per_cpu_patch(); |
| 358 | sun4v_patch(); |
| 359 | |
| 360 | cpu = hard_smp_processor_id(); |
| 361 | if (cpu >= NR_CPUS) { |
| 362 | prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", |
| 363 | cpu, NR_CPUS); |
| 364 | prom_halt(); |
| 365 | } |
| 366 | current_thread_info()->cpu = cpu; |
| 367 | |
| 368 | prom_init_report(); |
| 369 | start_kernel(); |
David S. Miller | 951bc82 | 2006-05-31 01:24:02 -0700 | [diff] [blame] | 370 | } |
David S. Miller | 951bc82 | 2006-05-31 01:24:02 -0700 | [diff] [blame] | 371 | |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 372 | /* On Ultra, we support all of the v8 capabilities. */ |
| 373 | unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | |
| 374 | HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV | |
| 375 | HWCAP_SPARC_V9); |
| 376 | EXPORT_SYMBOL(sparc64_elf_hwcap); |
| 377 | |
| 378 | static const char *hwcaps[] = { |
| 379 | "flush", "stbar", "swap", "muldiv", "v9", |
| 380 | "ultra3", "blkinit", "n2", |
| 381 | |
| 382 | /* These strings are as they appear in the machine description |
| 383 | * 'hwcap-list' property for cpu nodes. |
| 384 | */ |
| 385 | "mul32", "div32", "fsmuld", "v8plus", "popc", "vis", "vis2", |
| 386 | "ASIBlkInit", "fmaf", "vis3", "hpc", "random", "trans", "fjfmau", |
Khalid Aziz | 82924e5 | 2015-12-17 10:33:50 -0700 | [diff] [blame] | 387 | "ima", "cspare", "pause", "cbcond", NULL /*reserved for crypto */, |
| 388 | "adp", |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 389 | }; |
| 390 | |
| 391 | static const char *crypto_hwcaps[] = { |
| 392 | "aes", "des", "kasumi", "camellia", "md5", "sha1", "sha256", |
| 393 | "sha512", "mpmul", "montmul", "montsqr", "crc32c", |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 394 | }; |
| 395 | |
| 396 | void cpucap_info(struct seq_file *m) |
| 397 | { |
| 398 | unsigned long caps = sparc64_elf_hwcap; |
| 399 | int i, printed = 0; |
| 400 | |
| 401 | seq_puts(m, "cpucaps\t\t: "); |
| 402 | for (i = 0; i < ARRAY_SIZE(hwcaps); i++) { |
| 403 | unsigned long bit = 1UL << i; |
Khalid Aziz | 82924e5 | 2015-12-17 10:33:50 -0700 | [diff] [blame] | 404 | if (hwcaps[i] && (caps & bit)) { |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 405 | seq_printf(m, "%s%s", |
| 406 | printed ? "," : "", hwcaps[i]); |
| 407 | printed++; |
| 408 | } |
| 409 | } |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 410 | if (caps & HWCAP_SPARC_CRYPTO) { |
| 411 | unsigned long cfr; |
| 412 | |
| 413 | __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); |
| 414 | for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) { |
| 415 | unsigned long bit = 1UL << i; |
| 416 | if (cfr & bit) { |
| 417 | seq_printf(m, "%s%s", |
| 418 | printed ? "," : "", crypto_hwcaps[i]); |
| 419 | printed++; |
| 420 | } |
| 421 | } |
| 422 | } |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 423 | seq_putc(m, '\n'); |
| 424 | } |
| 425 | |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 426 | static void __init report_one_hwcap(int *printed, const char *name) |
| 427 | { |
| 428 | if ((*printed) == 0) |
| 429 | printk(KERN_INFO "CPU CAPS: ["); |
| 430 | printk(KERN_CONT "%s%s", |
| 431 | (*printed) ? "," : "", name); |
| 432 | if (++(*printed) == 8) { |
| 433 | printk(KERN_CONT "]\n"); |
| 434 | *printed = 0; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | static void __init report_crypto_hwcaps(int *printed) |
| 439 | { |
| 440 | unsigned long cfr; |
| 441 | int i; |
| 442 | |
| 443 | __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); |
| 444 | |
| 445 | for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) { |
| 446 | unsigned long bit = 1UL << i; |
| 447 | if (cfr & bit) |
| 448 | report_one_hwcap(printed, crypto_hwcaps[i]); |
| 449 | } |
| 450 | } |
| 451 | |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 452 | static void __init report_hwcaps(unsigned long caps) |
| 453 | { |
| 454 | int i, printed = 0; |
| 455 | |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 456 | for (i = 0; i < ARRAY_SIZE(hwcaps); i++) { |
| 457 | unsigned long bit = 1UL << i; |
Khalid Aziz | 82924e5 | 2015-12-17 10:33:50 -0700 | [diff] [blame] | 458 | if (hwcaps[i] && (caps & bit)) |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 459 | report_one_hwcap(&printed, hwcaps[i]); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 460 | } |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 461 | if (caps & HWCAP_SPARC_CRYPTO) |
| 462 | report_crypto_hwcaps(&printed); |
| 463 | if (printed != 0) |
| 464 | printk(KERN_CONT "]\n"); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 465 | } |
| 466 | |
| 467 | static unsigned long __init mdesc_cpu_hwcap_list(void) |
| 468 | { |
| 469 | struct mdesc_handle *hp; |
| 470 | unsigned long caps = 0; |
| 471 | const char *prop; |
| 472 | int len; |
| 473 | u64 pn; |
| 474 | |
| 475 | hp = mdesc_grab(); |
| 476 | if (!hp) |
| 477 | return 0; |
| 478 | |
| 479 | pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "cpu"); |
| 480 | if (pn == MDESC_NODE_NULL) |
| 481 | goto out; |
| 482 | |
| 483 | prop = mdesc_get_property(hp, pn, "hwcap-list", &len); |
| 484 | if (!prop) |
| 485 | goto out; |
| 486 | |
| 487 | while (len) { |
| 488 | int i, plen; |
| 489 | |
| 490 | for (i = 0; i < ARRAY_SIZE(hwcaps); i++) { |
| 491 | unsigned long bit = 1UL << i; |
| 492 | |
Khalid Aziz | 82924e5 | 2015-12-17 10:33:50 -0700 | [diff] [blame] | 493 | if (hwcaps[i] && !strcmp(prop, hwcaps[i])) { |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 494 | caps |= bit; |
| 495 | break; |
| 496 | } |
| 497 | } |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 498 | for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) { |
| 499 | if (!strcmp(prop, crypto_hwcaps[i])) |
| 500 | caps |= HWCAP_SPARC_CRYPTO; |
| 501 | } |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 502 | |
| 503 | plen = strlen(prop) + 1; |
| 504 | prop += plen; |
| 505 | len -= plen; |
| 506 | } |
| 507 | |
| 508 | out: |
| 509 | mdesc_release(hp); |
| 510 | return caps; |
| 511 | } |
| 512 | |
| 513 | /* This yields a mask that user programs can use to figure out what |
| 514 | * instruction set this cpu supports. |
| 515 | */ |
| 516 | static void __init init_sparc64_elf_hwcap(void) |
| 517 | { |
| 518 | unsigned long cap = sparc64_elf_hwcap; |
| 519 | unsigned long mdesc_caps; |
| 520 | |
| 521 | if (tlb_type == cheetah || tlb_type == cheetah_plus) |
| 522 | cap |= HWCAP_SPARC_ULTRA3; |
| 523 | else if (tlb_type == hypervisor) { |
| 524 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || |
| 525 | sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 526 | sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 527 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 528 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5 || |
Allen Pais | 4083162 | 2014-09-08 11:48:55 +0530 | [diff] [blame] | 529 | sun4v_chip_type == SUN4V_CHIP_SPARC_M6 || |
| 530 | sun4v_chip_type == SUN4V_CHIP_SPARC_M7 || |
Khalid Aziz | c5b8b5b | 2016-04-19 11:12:54 -0600 | [diff] [blame] | 531 | sun4v_chip_type == SUN4V_CHIP_SPARC_SN || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 532 | sun4v_chip_type == SUN4V_CHIP_SPARC64X) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 533 | cap |= HWCAP_SPARC_BLKINIT; |
| 534 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 535 | sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 536 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 537 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5 || |
Allen Pais | 4083162 | 2014-09-08 11:48:55 +0530 | [diff] [blame] | 538 | sun4v_chip_type == SUN4V_CHIP_SPARC_M6 || |
| 539 | sun4v_chip_type == SUN4V_CHIP_SPARC_M7 || |
Khalid Aziz | c5b8b5b | 2016-04-19 11:12:54 -0600 | [diff] [blame] | 540 | sun4v_chip_type == SUN4V_CHIP_SPARC_SN || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 541 | sun4v_chip_type == SUN4V_CHIP_SPARC64X) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 542 | cap |= HWCAP_SPARC_N2; |
| 543 | } |
| 544 | |
| 545 | cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS); |
| 546 | |
| 547 | mdesc_caps = mdesc_cpu_hwcap_list(); |
| 548 | if (!mdesc_caps) { |
| 549 | if (tlb_type == spitfire) |
| 550 | cap |= AV_SPARC_VIS; |
| 551 | if (tlb_type == cheetah || tlb_type == cheetah_plus) |
| 552 | cap |= AV_SPARC_VIS | AV_SPARC_VIS2; |
David S. Miller | 1a8e0da | 2011-08-29 21:14:29 -0700 | [diff] [blame] | 553 | if (tlb_type == cheetah_plus) { |
| 554 | unsigned long impl, ver; |
| 555 | |
| 556 | __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver)); |
| 557 | impl = ((ver >> 32) & 0xffff); |
| 558 | if (impl == PANTHER_IMPL) |
| 559 | cap |= AV_SPARC_POPC; |
| 560 | } |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 561 | if (tlb_type == hypervisor) { |
| 562 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1) |
| 563 | cap |= AV_SPARC_ASI_BLK_INIT; |
| 564 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 565 | sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 566 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 567 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5 || |
Allen Pais | 4083162 | 2014-09-08 11:48:55 +0530 | [diff] [blame] | 568 | sun4v_chip_type == SUN4V_CHIP_SPARC_M6 || |
| 569 | sun4v_chip_type == SUN4V_CHIP_SPARC_M7 || |
Khalid Aziz | c5b8b5b | 2016-04-19 11:12:54 -0600 | [diff] [blame] | 570 | sun4v_chip_type == SUN4V_CHIP_SPARC_SN || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 571 | sun4v_chip_type == SUN4V_CHIP_SPARC64X) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 572 | cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 | |
| 573 | AV_SPARC_ASI_BLK_INIT | |
| 574 | AV_SPARC_POPC); |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 575 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 576 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 577 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5 || |
Allen Pais | 4083162 | 2014-09-08 11:48:55 +0530 | [diff] [blame] | 578 | sun4v_chip_type == SUN4V_CHIP_SPARC_M6 || |
| 579 | sun4v_chip_type == SUN4V_CHIP_SPARC_M7 || |
Khalid Aziz | c5b8b5b | 2016-04-19 11:12:54 -0600 | [diff] [blame] | 580 | sun4v_chip_type == SUN4V_CHIP_SPARC_SN || |
Allen Pais | 4e96377 | 2013-07-23 16:50:38 +0530 | [diff] [blame] | 581 | sun4v_chip_type == SUN4V_CHIP_SPARC64X) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 582 | cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC | |
| 583 | AV_SPARC_FMAF); |
| 584 | } |
| 585 | } |
| 586 | sparc64_elf_hwcap = cap | mdesc_caps; |
| 587 | |
| 588 | report_hwcaps(sparc64_elf_hwcap); |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 589 | |
| 590 | if (sparc64_elf_hwcap & AV_SPARC_POPC) |
| 591 | popc_patch(); |
David S. Miller | e9b9eb5 | 2012-10-27 23:00:41 -0700 | [diff] [blame] | 592 | if (sparc64_elf_hwcap & AV_SPARC_PAUSE) |
| 593 | pause_patch(); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 594 | } |
| 595 | |
Atish Patra | ebb99a4 | 2016-09-15 14:54:41 -0600 | [diff] [blame] | 596 | void __init alloc_irqstack_bootmem(void) |
| 597 | { |
| 598 | unsigned int i, node; |
| 599 | |
| 600 | for_each_possible_cpu(i) { |
| 601 | node = cpu_to_node(i); |
| 602 | |
| 603 | softirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node), |
| 604 | THREAD_SIZE, |
| 605 | THREAD_SIZE, 0); |
| 606 | hardirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node), |
| 607 | THREAD_SIZE, |
| 608 | THREAD_SIZE, 0); |
| 609 | } |
| 610 | } |
| 611 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | void __init setup_arch(char **cmdline_p) |
| 613 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | /* Initialize PROM console and command line. */ |
| 615 | *cmdline_p = prom_getbootargs(); |
Zhao Hongjiang | 117a0c5 | 2013-06-09 16:57:58 +0800 | [diff] [blame] | 616 | strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); |
David S. Miller | ce3b1d4 | 2008-03-19 03:54:09 -0700 | [diff] [blame] | 617 | parse_early_param(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | |
David S. Miller | 3c62a2d | 2008-02-17 23:22:50 -0800 | [diff] [blame] | 619 | boot_flags_init(*cmdline_p); |
David S. Miller | c57ec52 | 2009-11-27 17:33:43 -0800 | [diff] [blame] | 620 | #ifdef CONFIG_EARLYFB |
| 621 | if (btext_find_display()) |
| 622 | #endif |
| 623 | register_console(&prom_early_console); |
David S. Miller | 3c62a2d | 2008-02-17 23:22:50 -0800 | [diff] [blame] | 624 | |
David S. Miller | 3a8c069 | 2006-02-09 02:54:54 -0800 | [diff] [blame] | 625 | if (tlb_type == hypervisor) |
| 626 | printk("ARCH: SUN4V\n"); |
| 627 | else |
| 628 | printk("ARCH: SUN4U\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
| 630 | #ifdef CONFIG_DUMMY_CONSOLE |
| 631 | conswitchp = &dummy_con; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | #endif |
| 633 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | idprom_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
| 636 | if (!root_flags) |
| 637 | root_mountflags &= ~MS_RDONLY; |
| 638 | ROOT_DEV = old_decode_dev(root_dev); |
Andrew Morton | 467418f | 2006-03-19 12:46:55 -0800 | [diff] [blame] | 639 | #ifdef CONFIG_BLK_DEV_RAM |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; |
| 641 | rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); |
| 642 | rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); |
| 643 | #endif |
| 644 | |
Al Viro | f316964 | 2006-01-12 01:05:42 -0800 | [diff] [blame] | 645 | task_thread_info(&init_task)->kregs = &fake_swapper_regs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| 647 | #ifdef CONFIG_IP_PNP |
| 648 | if (!ic_set_manually) { |
Andres Salomon | 8d12556 | 2010-10-08 14:18:11 -0700 | [diff] [blame] | 649 | phandle chosen = prom_finddevice("/chosen"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | u32 cl, sv, gw; |
| 651 | |
| 652 | cl = prom_getintdefault (chosen, "client-ip", 0); |
| 653 | sv = prom_getintdefault (chosen, "server-ip", 0); |
| 654 | gw = prom_getintdefault (chosen, "gateway-ip", 0); |
| 655 | if (cl && sv) { |
| 656 | ic_myaddr = cl; |
| 657 | ic_servaddr = sv; |
| 658 | if (gw) |
| 659 | ic_gateway = gw; |
| 660 | #if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP) |
| 661 | ic_proto_enabled = 0; |
| 662 | #endif |
| 663 | } |
| 664 | } |
| 665 | #endif |
| 666 | |
David S. Miller | 56fb4df | 2006-02-26 23:24:22 -0800 | [diff] [blame] | 667 | /* Get boot processor trap_block[] setup. */ |
David S. Miller | 72aff53 | 2006-02-17 01:29:17 -0800 | [diff] [blame] | 668 | init_cur_cpu_trap(current_thread_info()); |
David S. Miller | 52845cd | 2006-02-26 23:32:33 -0800 | [diff] [blame] | 669 | |
| 670 | paging_init(); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 671 | init_sparc64_elf_hwcap(); |
Atish Patra | 9b2f753 | 2016-09-15 14:54:40 -0600 | [diff] [blame] | 672 | smp_fill_in_cpu_possible_map(); |
Atish Patra | ebb99a4 | 2016-09-15 14:54:41 -0600 | [diff] [blame] | 673 | /* |
| 674 | * Once the OF device tree and MDESC have been setup and nr_cpus has |
| 675 | * been parsed, we know the list of possible cpus. Therefore we can |
| 676 | * allocate the IRQ stacks. |
| 677 | */ |
| 678 | alloc_irqstack_bootmem(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | } |
| 680 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | extern int stop_a_enabled; |
| 682 | |
| 683 | void sun_do_break(void) |
| 684 | { |
| 685 | if (!stop_a_enabled) |
| 686 | return; |
| 687 | |
| 688 | prom_printf("\n"); |
| 689 | flush_user_windows(); |
| 690 | |
| 691 | prom_cmdline(); |
| 692 | } |
Sam Ravnborg | 917c366 | 2009-01-08 16:58:20 -0800 | [diff] [blame] | 693 | EXPORT_SYMBOL(sun_do_break); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | int stop_a_enabled = 1; |
Sam Ravnborg | 917c366 | 2009-01-08 16:58:20 -0800 | [diff] [blame] | 696 | EXPORT_SYMBOL(stop_a_enabled); |