Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Processor capabilities determination functions. |
| 3 | * |
| 4 | * Copyright (C) xxxx the Anonymous |
Ralf Baechle | 010b853 | 2006-01-29 18:42:08 +0000 | [diff] [blame] | 5 | * Copyright (C) 1994 - 2006 Ralf Baechle |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 6 | * Copyright (C) 2003, 2004 Maciej W. Rozycki |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 7 | * Copyright (C) 2001, 2004, 2011, 2012 MIPS Technologies, Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation; either version |
| 12 | * 2 of the License, or (at your option) any later version. |
| 13 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/init.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/ptrace.h> |
Ralf Baechle | 631330f | 2009-06-19 14:05:26 +0100 | [diff] [blame] | 17 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/stddef.h> |
Paul Gortmaker | 73bc256 | 2011-07-23 16:30:40 -0400 | [diff] [blame] | 19 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | |
Ralf Baechle | 5759906 | 2007-02-18 19:07:31 +0000 | [diff] [blame] | 21 | #include <asm/bugs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <asm/cpu.h> |
| 23 | #include <asm/fpu.h> |
| 24 | #include <asm/mipsregs.h> |
David Daney | 654f57b | 2008-09-23 00:07:16 -0700 | [diff] [blame] | 25 | #include <asm/watch.h> |
Paul Gortmaker | 06372a6 | 2011-07-23 16:26:41 -0400 | [diff] [blame] | 26 | #include <asm/elf.h> |
Chris Dearman | a074f0e | 2009-07-10 01:51:27 -0700 | [diff] [blame] | 27 | #include <asm/spram.h> |
David Daney | 949e51b | 2010-10-14 11:32:33 -0700 | [diff] [blame] | 28 | #include <asm/uaccess.h> |
| 29 | |
Kevin Cernekee | 0103d23 | 2010-05-02 14:43:52 -0700 | [diff] [blame] | 30 | static int __cpuinitdata mips_fpu_disabled; |
| 31 | |
| 32 | static int __init fpu_disable(char *s) |
| 33 | { |
| 34 | cpu_data[0].options &= ~MIPS_CPU_FPU; |
| 35 | mips_fpu_disabled = 1; |
| 36 | |
| 37 | return 1; |
| 38 | } |
| 39 | |
| 40 | __setup("nofpu", fpu_disable); |
| 41 | |
| 42 | int __cpuinitdata mips_dsp_disabled; |
| 43 | |
| 44 | static int __init dsp_disable(char *s) |
| 45 | { |
Steven J. Hill | ee80f7c7 | 2012-08-03 10:26:04 -0500 | [diff] [blame] | 46 | cpu_data[0].ases &= ~(MIPS_ASE_DSP | MIPS_ASE_DSP2P); |
Kevin Cernekee | 0103d23 | 2010-05-02 14:43:52 -0700 | [diff] [blame] | 47 | mips_dsp_disabled = 1; |
| 48 | |
| 49 | return 1; |
| 50 | } |
| 51 | |
| 52 | __setup("nodsp", dsp_disable); |
| 53 | |
Marc St-Jean | 9267a30 | 2007-06-14 15:55:31 -0600 | [diff] [blame] | 54 | static inline void check_errata(void) |
| 55 | { |
| 56 | struct cpuinfo_mips *c = ¤t_cpu_data; |
| 57 | |
| 58 | switch (c->cputype) { |
| 59 | case CPU_34K: |
| 60 | /* |
| 61 | * Erratum "RPS May Cause Incorrect Instruction Execution" |
| 62 | * This code only handles VPE0, any SMP/SMTC/RTOS code |
| 63 | * making use of VPE1 will be responsable for that VPE. |
| 64 | */ |
| 65 | if ((c->processor_id & PRID_REV_MASK) <= PRID_REV_34K_V1_0_2) |
| 66 | write_c0_config7(read_c0_config7() | MIPS_CONF7_RPS); |
| 67 | break; |
| 68 | default: |
| 69 | break; |
| 70 | } |
| 71 | } |
| 72 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | void __init check_bugs32(void) |
| 74 | { |
Marc St-Jean | 9267a30 | 2007-06-14 15:55:31 -0600 | [diff] [blame] | 75 | check_errata(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | /* |
| 79 | * Probe whether cpu has config register by trying to play with |
| 80 | * alternate cache bit and see whether it matters. |
| 81 | * It's used by cpu_probe to distinguish between R3000A and R3081. |
| 82 | */ |
| 83 | static inline int cpu_has_confreg(void) |
| 84 | { |
| 85 | #ifdef CONFIG_CPU_R3000 |
| 86 | extern unsigned long r3k_cache_size(unsigned long); |
| 87 | unsigned long size1, size2; |
| 88 | unsigned long cfg = read_c0_conf(); |
| 89 | |
| 90 | size1 = r3k_cache_size(ST0_ISC); |
| 91 | write_c0_conf(cfg ^ R30XX_CONF_AC); |
| 92 | size2 = r3k_cache_size(ST0_ISC); |
| 93 | write_c0_conf(cfg); |
| 94 | return size1 != size2; |
| 95 | #else |
| 96 | return 0; |
| 97 | #endif |
| 98 | } |
| 99 | |
Robert Millan | c094c99 | 2011-04-18 11:37:55 -0700 | [diff] [blame] | 100 | static inline void set_elf_platform(int cpu, const char *plat) |
| 101 | { |
| 102 | if (cpu == 0) |
| 103 | __elf_platform = plat; |
| 104 | } |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | /* |
| 107 | * Get the FPU Implementation/Revision. |
| 108 | */ |
| 109 | static inline unsigned long cpu_get_fpu_id(void) |
| 110 | { |
| 111 | unsigned long tmp, fpu_id; |
| 112 | |
| 113 | tmp = read_c0_status(); |
| 114 | __enable_fpu(); |
| 115 | fpu_id = read_32bit_cp1_register(CP1_REVISION); |
| 116 | write_c0_status(tmp); |
| 117 | return fpu_id; |
| 118 | } |
| 119 | |
| 120 | /* |
| 121 | * Check the CPU has an FPU the official way. |
| 122 | */ |
| 123 | static inline int __cpu_has_fpu(void) |
| 124 | { |
| 125 | return ((cpu_get_fpu_id() & 0xff00) != FPIR_IMP_NONE); |
| 126 | } |
| 127 | |
Guenter Roeck | 91dfc42 | 2010-02-02 08:52:20 -0800 | [diff] [blame] | 128 | static inline void cpu_probe_vmbits(struct cpuinfo_mips *c) |
| 129 | { |
| 130 | #ifdef __NEED_VMBITS_PROBE |
David Daney | 5b7efa8 | 2010-02-08 12:27:00 -0800 | [diff] [blame] | 131 | write_c0_entryhi(0x3fffffffffffe000ULL); |
Guenter Roeck | 91dfc42 | 2010-02-02 08:52:20 -0800 | [diff] [blame] | 132 | back_to_back_c0_hazard(); |
David Daney | 5b7efa8 | 2010-02-08 12:27:00 -0800 | [diff] [blame] | 133 | c->vmbits = fls64(read_c0_entryhi() & 0x3fffffffffffe000ULL); |
Guenter Roeck | 91dfc42 | 2010-02-02 08:52:20 -0800 | [diff] [blame] | 134 | #endif |
| 135 | } |
| 136 | |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 137 | static void __cpuinit set_isa(struct cpuinfo_mips *c, unsigned int isa) |
| 138 | { |
| 139 | switch (isa) { |
| 140 | case MIPS_CPU_ISA_M64R2: |
| 141 | c->isa_level |= MIPS_CPU_ISA_M32R2 | MIPS_CPU_ISA_M64R2; |
| 142 | case MIPS_CPU_ISA_M64R1: |
| 143 | c->isa_level |= MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M64R1; |
| 144 | case MIPS_CPU_ISA_V: |
| 145 | c->isa_level |= MIPS_CPU_ISA_V; |
| 146 | case MIPS_CPU_ISA_IV: |
| 147 | c->isa_level |= MIPS_CPU_ISA_IV; |
| 148 | case MIPS_CPU_ISA_III: |
Ralf Baechle | 1990e54 | 2013-06-26 17:06:34 +0200 | [diff] [blame^] | 149 | c->isa_level |= MIPS_CPU_ISA_II | MIPS_CPU_ISA_III; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 150 | break; |
| 151 | |
| 152 | case MIPS_CPU_ISA_M32R2: |
| 153 | c->isa_level |= MIPS_CPU_ISA_M32R2; |
| 154 | case MIPS_CPU_ISA_M32R1: |
| 155 | c->isa_level |= MIPS_CPU_ISA_M32R1; |
| 156 | case MIPS_CPU_ISA_II: |
| 157 | c->isa_level |= MIPS_CPU_ISA_II; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 158 | break; |
| 159 | } |
| 160 | } |
| 161 | |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 162 | static char unknown_isa[] __cpuinitdata = KERN_ERR \ |
| 163 | "Unsupported ISA type, c0.config0: %d."; |
| 164 | |
| 165 | static inline unsigned int decode_config0(struct cpuinfo_mips *c) |
| 166 | { |
| 167 | unsigned int config0; |
| 168 | int isa; |
| 169 | |
| 170 | config0 = read_c0_config(); |
| 171 | |
| 172 | if (((config0 & MIPS_CONF_MT) >> 7) == 1) |
| 173 | c->options |= MIPS_CPU_TLB; |
| 174 | isa = (config0 & MIPS_CONF_AT) >> 13; |
| 175 | switch (isa) { |
| 176 | case 0: |
| 177 | switch ((config0 & MIPS_CONF_AR) >> 10) { |
| 178 | case 0: |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 179 | set_isa(c, MIPS_CPU_ISA_M32R1); |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 180 | break; |
| 181 | case 1: |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 182 | set_isa(c, MIPS_CPU_ISA_M32R2); |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 183 | break; |
| 184 | default: |
| 185 | goto unknown; |
| 186 | } |
| 187 | break; |
| 188 | case 2: |
| 189 | switch ((config0 & MIPS_CONF_AR) >> 10) { |
| 190 | case 0: |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 191 | set_isa(c, MIPS_CPU_ISA_M64R1); |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 192 | break; |
| 193 | case 1: |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 194 | set_isa(c, MIPS_CPU_ISA_M64R2); |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 195 | break; |
| 196 | default: |
| 197 | goto unknown; |
| 198 | } |
| 199 | break; |
| 200 | default: |
| 201 | goto unknown; |
| 202 | } |
| 203 | |
| 204 | return config0 & MIPS_CONF_M; |
| 205 | |
| 206 | unknown: |
| 207 | panic(unknown_isa, config0); |
| 208 | } |
| 209 | |
| 210 | static inline unsigned int decode_config1(struct cpuinfo_mips *c) |
| 211 | { |
| 212 | unsigned int config1; |
| 213 | |
| 214 | config1 = read_c0_config1(); |
| 215 | |
| 216 | if (config1 & MIPS_CONF1_MD) |
| 217 | c->ases |= MIPS_ASE_MDMX; |
| 218 | if (config1 & MIPS_CONF1_WR) |
| 219 | c->options |= MIPS_CPU_WATCH; |
| 220 | if (config1 & MIPS_CONF1_CA) |
| 221 | c->ases |= MIPS_ASE_MIPS16; |
| 222 | if (config1 & MIPS_CONF1_EP) |
| 223 | c->options |= MIPS_CPU_EJTAG; |
| 224 | if (config1 & MIPS_CONF1_FP) { |
| 225 | c->options |= MIPS_CPU_FPU; |
| 226 | c->options |= MIPS_CPU_32FPR; |
| 227 | } |
| 228 | if (cpu_has_tlb) |
| 229 | c->tlbsize = ((config1 & MIPS_CONF1_TLBS) >> 25) + 1; |
| 230 | |
| 231 | return config1 & MIPS_CONF_M; |
| 232 | } |
| 233 | |
| 234 | static inline unsigned int decode_config2(struct cpuinfo_mips *c) |
| 235 | { |
| 236 | unsigned int config2; |
| 237 | |
| 238 | config2 = read_c0_config2(); |
| 239 | |
| 240 | if (config2 & MIPS_CONF2_SL) |
| 241 | c->scache.flags &= ~MIPS_CACHE_NOT_PRESENT; |
| 242 | |
| 243 | return config2 & MIPS_CONF_M; |
| 244 | } |
| 245 | |
| 246 | static inline unsigned int decode_config3(struct cpuinfo_mips *c) |
| 247 | { |
| 248 | unsigned int config3; |
| 249 | |
| 250 | config3 = read_c0_config3(); |
| 251 | |
Steven J. Hill | b2ab4f0 | 2012-09-13 16:47:58 -0500 | [diff] [blame] | 252 | if (config3 & MIPS_CONF3_SM) { |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 253 | c->ases |= MIPS_ASE_SMARTMIPS; |
Steven J. Hill | b2ab4f0 | 2012-09-13 16:47:58 -0500 | [diff] [blame] | 254 | c->options |= MIPS_CPU_RIXI; |
| 255 | } |
| 256 | if (config3 & MIPS_CONF3_RXI) |
| 257 | c->options |= MIPS_CPU_RIXI; |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 258 | if (config3 & MIPS_CONF3_DSP) |
| 259 | c->ases |= MIPS_ASE_DSP; |
Steven J. Hill | ee80f7c7 | 2012-08-03 10:26:04 -0500 | [diff] [blame] | 260 | if (config3 & MIPS_CONF3_DSP2P) |
| 261 | c->ases |= MIPS_ASE_DSP2P; |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 262 | if (config3 & MIPS_CONF3_VINT) |
| 263 | c->options |= MIPS_CPU_VINT; |
| 264 | if (config3 & MIPS_CONF3_VEIC) |
| 265 | c->options |= MIPS_CPU_VEIC; |
| 266 | if (config3 & MIPS_CONF3_MT) |
| 267 | c->ases |= MIPS_ASE_MIPSMT; |
| 268 | if (config3 & MIPS_CONF3_ULRI) |
| 269 | c->options |= MIPS_CPU_ULRI; |
Steven J. Hill | f8fa481 | 2012-12-07 03:51:35 +0000 | [diff] [blame] | 270 | if (config3 & MIPS_CONF3_ISA) |
| 271 | c->options |= MIPS_CPU_MICROMIPS; |
Steven J. Hill | 2a0b24f | 2013-03-25 12:15:55 -0500 | [diff] [blame] | 272 | #ifdef CONFIG_CPU_MICROMIPS |
| 273 | write_c0_config3(read_c0_config3() | MIPS_CONF3_ISA_OE); |
| 274 | #endif |
David Daney | 1e7decd | 2013-02-16 23:42:43 +0100 | [diff] [blame] | 275 | if (config3 & MIPS_CONF3_VZ) |
| 276 | c->ases |= MIPS_ASE_VZ; |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 277 | |
| 278 | return config3 & MIPS_CONF_M; |
| 279 | } |
| 280 | |
| 281 | static inline unsigned int decode_config4(struct cpuinfo_mips *c) |
| 282 | { |
| 283 | unsigned int config4; |
| 284 | |
| 285 | config4 = read_c0_config4(); |
| 286 | |
| 287 | if ((config4 & MIPS_CONF4_MMUEXTDEF) == MIPS_CONF4_MMUEXTDEF_MMUSIZEEXT |
| 288 | && cpu_has_tlb) |
| 289 | c->tlbsize += (config4 & MIPS_CONF4_MMUSIZEEXT) * 0x40; |
| 290 | |
| 291 | c->kscratch_mask = (config4 >> 16) & 0xff; |
| 292 | |
| 293 | return config4 & MIPS_CONF_M; |
| 294 | } |
| 295 | |
| 296 | static void __cpuinit decode_configs(struct cpuinfo_mips *c) |
| 297 | { |
| 298 | int ok; |
| 299 | |
| 300 | /* MIPS32 or MIPS64 compliant CPU. */ |
| 301 | c->options = MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE | MIPS_CPU_COUNTER | |
| 302 | MIPS_CPU_DIVEC | MIPS_CPU_LLSC | MIPS_CPU_MCHECK; |
| 303 | |
| 304 | c->scache.flags = MIPS_CACHE_NOT_PRESENT; |
| 305 | |
| 306 | ok = decode_config0(c); /* Read Config registers. */ |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 307 | BUG_ON(!ok); /* Arch spec violation! */ |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 308 | if (ok) |
| 309 | ok = decode_config1(c); |
| 310 | if (ok) |
| 311 | ok = decode_config2(c); |
| 312 | if (ok) |
| 313 | ok = decode_config3(c); |
| 314 | if (ok) |
| 315 | ok = decode_config4(c); |
| 316 | |
| 317 | mips_probe_watch_registers(c); |
| 318 | |
| 319 | if (cpu_has_mips_r2) |
| 320 | c->core = read_c0_ebase() & 0x3ff; |
| 321 | } |
| 322 | |
Ralf Baechle | 02cf211 | 2005-10-01 13:06:32 +0100 | [diff] [blame] | 323 | #define R4K_OPTS (MIPS_CPU_TLB | MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | | MIPS_CPU_COUNTER) |
| 325 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 326 | static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | { |
| 328 | switch (c->processor_id & 0xff00) { |
| 329 | case PRID_IMP_R2000: |
| 330 | c->cputype = CPU_R2000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 331 | __cpu_name[cpu] = "R2000"; |
Ralf Baechle | 02cf211 | 2005-10-01 13:06:32 +0100 | [diff] [blame] | 332 | c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 333 | MIPS_CPU_NOFPUEX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | if (__cpu_has_fpu()) |
| 335 | c->options |= MIPS_CPU_FPU; |
| 336 | c->tlbsize = 64; |
| 337 | break; |
| 338 | case PRID_IMP_R3000: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 339 | if ((c->processor_id & 0xff) == PRID_REV_R3000A) { |
| 340 | if (cpu_has_confreg()) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | c->cputype = CPU_R3081E; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 342 | __cpu_name[cpu] = "R3081"; |
| 343 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | c->cputype = CPU_R3000A; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 345 | __cpu_name[cpu] = "R3000A"; |
| 346 | } |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 347 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | c->cputype = CPU_R3000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 349 | __cpu_name[cpu] = "R3000"; |
| 350 | } |
Ralf Baechle | 02cf211 | 2005-10-01 13:06:32 +0100 | [diff] [blame] | 351 | c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 352 | MIPS_CPU_NOFPUEX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | if (__cpu_has_fpu()) |
| 354 | c->options |= MIPS_CPU_FPU; |
| 355 | c->tlbsize = 64; |
| 356 | break; |
| 357 | case PRID_IMP_R4000: |
| 358 | if (read_c0_config() & CONF_SC) { |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 359 | if ((c->processor_id & 0xff) >= PRID_REV_R4400) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | c->cputype = CPU_R4400PC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 361 | __cpu_name[cpu] = "R4400PC"; |
| 362 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | c->cputype = CPU_R4000PC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 364 | __cpu_name[cpu] = "R4000PC"; |
| 365 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | } else { |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 367 | if ((c->processor_id & 0xff) >= PRID_REV_R4400) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | c->cputype = CPU_R4400SC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 369 | __cpu_name[cpu] = "R4400SC"; |
| 370 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | c->cputype = CPU_R4000SC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 372 | __cpu_name[cpu] = "R4000SC"; |
| 373 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | } |
| 375 | |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 376 | set_isa(c, MIPS_CPU_ISA_III); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 378 | MIPS_CPU_WATCH | MIPS_CPU_VCE | |
| 379 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | c->tlbsize = 48; |
| 381 | break; |
| 382 | case PRID_IMP_VR41XX: |
Yoichi Yuasa | 9f91e50 | 2013-02-21 15:38:19 +0900 | [diff] [blame] | 383 | set_isa(c, MIPS_CPU_ISA_III); |
| 384 | c->options = R4K_OPTS; |
| 385 | c->tlbsize = 32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | switch (c->processor_id & 0xf0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | case PRID_REV_VR4111: |
| 388 | c->cputype = CPU_VR4111; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 389 | __cpu_name[cpu] = "NEC VR4111"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | case PRID_REV_VR4121: |
| 392 | c->cputype = CPU_VR4121; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 393 | __cpu_name[cpu] = "NEC VR4121"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | break; |
| 395 | case PRID_REV_VR4122: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 396 | if ((c->processor_id & 0xf) < 0x3) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | c->cputype = CPU_VR4122; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 398 | __cpu_name[cpu] = "NEC VR4122"; |
| 399 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | c->cputype = CPU_VR4181A; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 401 | __cpu_name[cpu] = "NEC VR4181A"; |
| 402 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | break; |
| 404 | case PRID_REV_VR4130: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 405 | if ((c->processor_id & 0xf) < 0x4) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | c->cputype = CPU_VR4131; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 407 | __cpu_name[cpu] = "NEC VR4131"; |
| 408 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | c->cputype = CPU_VR4133; |
Yoichi Yuasa | 9f91e50 | 2013-02-21 15:38:19 +0900 | [diff] [blame] | 410 | c->options |= MIPS_CPU_LLSC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 411 | __cpu_name[cpu] = "NEC VR4133"; |
| 412 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | break; |
| 414 | default: |
| 415 | printk(KERN_INFO "Unexpected CPU of NEC VR4100 series\n"); |
| 416 | c->cputype = CPU_VR41XX; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 417 | __cpu_name[cpu] = "NEC Vr41xx"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | break; |
| 419 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | break; |
| 421 | case PRID_IMP_R4300: |
| 422 | c->cputype = CPU_R4300; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 423 | __cpu_name[cpu] = "R4300"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 424 | set_isa(c, MIPS_CPU_ISA_III); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 426 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | c->tlbsize = 32; |
| 428 | break; |
| 429 | case PRID_IMP_R4600: |
| 430 | c->cputype = CPU_R4600; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 431 | __cpu_name[cpu] = "R4600"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 432 | set_isa(c, MIPS_CPU_ISA_III); |
Thiemo Seufer | 075e750 | 2005-07-27 21:48:12 +0000 | [diff] [blame] | 433 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
| 434 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | c->tlbsize = 48; |
| 436 | break; |
| 437 | #if 0 |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 438 | case PRID_IMP_R4650: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | /* |
| 440 | * This processor doesn't have an MMU, so it's not |
| 441 | * "real easy" to run Linux on it. It is left purely |
| 442 | * for documentation. Commented out because it shares |
| 443 | * it's c0_prid id number with the TX3900. |
| 444 | */ |
Ralf Baechle | a3dddd5 | 2006-03-11 08:18:41 +0000 | [diff] [blame] | 445 | c->cputype = CPU_R4650; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 446 | __cpu_name[cpu] = "R4650"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 447 | set_isa(c, MIPS_CPU_ISA_III); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_LLSC; |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 449 | c->tlbsize = 48; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | break; |
| 451 | #endif |
| 452 | case PRID_IMP_TX39: |
Ralf Baechle | 02cf211 | 2005-10-01 13:06:32 +0100 | [diff] [blame] | 453 | c->options = MIPS_CPU_TLB | MIPS_CPU_TX39_CACHE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
| 455 | if ((c->processor_id & 0xf0) == (PRID_REV_TX3927 & 0xf0)) { |
| 456 | c->cputype = CPU_TX3927; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 457 | __cpu_name[cpu] = "TX3927"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | c->tlbsize = 64; |
| 459 | } else { |
| 460 | switch (c->processor_id & 0xff) { |
| 461 | case PRID_REV_TX3912: |
| 462 | c->cputype = CPU_TX3912; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 463 | __cpu_name[cpu] = "TX3912"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | c->tlbsize = 32; |
| 465 | break; |
| 466 | case PRID_REV_TX3922: |
| 467 | c->cputype = CPU_TX3922; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 468 | __cpu_name[cpu] = "TX3922"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | c->tlbsize = 64; |
| 470 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | } |
| 472 | } |
| 473 | break; |
| 474 | case PRID_IMP_R4700: |
| 475 | c->cputype = CPU_R4700; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 476 | __cpu_name[cpu] = "R4700"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 477 | set_isa(c, MIPS_CPU_ISA_III); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 479 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | c->tlbsize = 48; |
| 481 | break; |
| 482 | case PRID_IMP_TX49: |
| 483 | c->cputype = CPU_TX49XX; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 484 | __cpu_name[cpu] = "R49XX"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 485 | set_isa(c, MIPS_CPU_ISA_III); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | c->options = R4K_OPTS | MIPS_CPU_LLSC; |
| 487 | if (!(c->processor_id & 0x08)) |
| 488 | c->options |= MIPS_CPU_FPU | MIPS_CPU_32FPR; |
| 489 | c->tlbsize = 48; |
| 490 | break; |
| 491 | case PRID_IMP_R5000: |
| 492 | c->cputype = CPU_R5000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 493 | __cpu_name[cpu] = "R5000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 494 | set_isa(c, MIPS_CPU_ISA_IV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 496 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | c->tlbsize = 48; |
| 498 | break; |
| 499 | case PRID_IMP_R5432: |
| 500 | c->cputype = CPU_R5432; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 501 | __cpu_name[cpu] = "R5432"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 502 | set_isa(c, MIPS_CPU_ISA_IV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 504 | MIPS_CPU_WATCH | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | c->tlbsize = 48; |
| 506 | break; |
| 507 | case PRID_IMP_R5500: |
| 508 | c->cputype = CPU_R5500; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 509 | __cpu_name[cpu] = "R5500"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 510 | set_isa(c, MIPS_CPU_ISA_IV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 512 | MIPS_CPU_WATCH | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | c->tlbsize = 48; |
| 514 | break; |
| 515 | case PRID_IMP_NEVADA: |
| 516 | c->cputype = CPU_NEVADA; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 517 | __cpu_name[cpu] = "Nevada"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 518 | set_isa(c, MIPS_CPU_ISA_IV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 520 | MIPS_CPU_DIVEC | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | c->tlbsize = 48; |
| 522 | break; |
| 523 | case PRID_IMP_R6000: |
| 524 | c->cputype = CPU_R6000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 525 | __cpu_name[cpu] = "R6000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 526 | set_isa(c, MIPS_CPU_ISA_II); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | c->options = MIPS_CPU_TLB | MIPS_CPU_FPU | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 528 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | c->tlbsize = 32; |
| 530 | break; |
| 531 | case PRID_IMP_R6000A: |
| 532 | c->cputype = CPU_R6000A; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 533 | __cpu_name[cpu] = "R6000A"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 534 | set_isa(c, MIPS_CPU_ISA_II); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | c->options = MIPS_CPU_TLB | MIPS_CPU_FPU | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 536 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | c->tlbsize = 32; |
| 538 | break; |
| 539 | case PRID_IMP_RM7000: |
| 540 | c->cputype = CPU_RM7000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 541 | __cpu_name[cpu] = "RM7000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 542 | set_isa(c, MIPS_CPU_ISA_IV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 544 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | /* |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 546 | * Undocumented RM7000: Bit 29 in the info register of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | * the RM7000 v2.0 indicates if the TLB has 48 or 64 |
| 548 | * entries. |
| 549 | * |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 550 | * 29 1 => 64 entry JTLB |
| 551 | * 0 => 48 entry JTLB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | */ |
| 553 | c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48; |
| 554 | break; |
| 555 | case PRID_IMP_RM9000: |
| 556 | c->cputype = CPU_RM9000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 557 | __cpu_name[cpu] = "RM9000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 558 | set_isa(c, MIPS_CPU_ISA_IV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 560 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | /* |
| 562 | * Bit 29 in the info register of the RM9000 |
| 563 | * indicates if the TLB has 48 or 64 entries. |
| 564 | * |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 565 | * 29 1 => 64 entry JTLB |
| 566 | * 0 => 48 entry JTLB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | */ |
| 568 | c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48; |
| 569 | break; |
| 570 | case PRID_IMP_R8000: |
| 571 | c->cputype = CPU_R8000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 572 | __cpu_name[cpu] = "RM8000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 573 | set_isa(c, MIPS_CPU_ISA_IV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | c->options = MIPS_CPU_TLB | MIPS_CPU_4KEX | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 575 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
| 576 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | c->tlbsize = 384; /* has weird TLB: 3-way x 128 */ |
| 578 | break; |
| 579 | case PRID_IMP_R10000: |
| 580 | c->cputype = CPU_R10000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 581 | __cpu_name[cpu] = "R10000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 582 | set_isa(c, MIPS_CPU_ISA_IV); |
Ralf Baechle | 8b36612 | 2005-11-22 17:53:59 +0000 | [diff] [blame] | 583 | c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 584 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | MIPS_CPU_COUNTER | MIPS_CPU_WATCH | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 586 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | c->tlbsize = 64; |
| 588 | break; |
| 589 | case PRID_IMP_R12000: |
| 590 | c->cputype = CPU_R12000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 591 | __cpu_name[cpu] = "R12000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 592 | set_isa(c, MIPS_CPU_ISA_IV); |
Ralf Baechle | 8b36612 | 2005-11-22 17:53:59 +0000 | [diff] [blame] | 593 | c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 594 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | MIPS_CPU_COUNTER | MIPS_CPU_WATCH | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 596 | MIPS_CPU_LLSC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | c->tlbsize = 64; |
| 598 | break; |
Kumba | 44d921b | 2006-05-16 22:23:59 -0400 | [diff] [blame] | 599 | case PRID_IMP_R14000: |
| 600 | c->cputype = CPU_R14000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 601 | __cpu_name[cpu] = "R14000"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 602 | set_isa(c, MIPS_CPU_ISA_IV); |
Kumba | 44d921b | 2006-05-16 22:23:59 -0400 | [diff] [blame] | 603 | c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 604 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
Kumba | 44d921b | 2006-05-16 22:23:59 -0400 | [diff] [blame] | 605 | MIPS_CPU_COUNTER | MIPS_CPU_WATCH | |
Steven J. Hill | 03751e7 | 2012-05-10 23:21:18 -0500 | [diff] [blame] | 606 | MIPS_CPU_LLSC; |
Kumba | 44d921b | 2006-05-16 22:23:59 -0400 | [diff] [blame] | 607 | c->tlbsize = 64; |
| 608 | break; |
Fuxin Zhang | 2a21c73 | 2007-06-06 14:52:43 +0800 | [diff] [blame] | 609 | case PRID_IMP_LOONGSON2: |
| 610 | c->cputype = CPU_LOONGSON2; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 611 | __cpu_name[cpu] = "ICT Loongson-2"; |
Robert Millan | 5aac1e8 | 2011-04-16 11:29:29 -0700 | [diff] [blame] | 612 | |
| 613 | switch (c->processor_id & PRID_REV_MASK) { |
| 614 | case PRID_REV_LOONGSON2E: |
| 615 | set_elf_platform(cpu, "loongson2e"); |
| 616 | break; |
| 617 | case PRID_REV_LOONGSON2F: |
| 618 | set_elf_platform(cpu, "loongson2f"); |
| 619 | break; |
| 620 | } |
| 621 | |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 622 | set_isa(c, MIPS_CPU_ISA_III); |
Fuxin Zhang | 2a21c73 | 2007-06-06 14:52:43 +0800 | [diff] [blame] | 623 | c->options = R4K_OPTS | |
| 624 | MIPS_CPU_FPU | MIPS_CPU_LLSC | |
| 625 | MIPS_CPU_32FPR; |
| 626 | c->tlbsize = 64; |
| 627 | break; |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 628 | case PRID_IMP_LOONGSON1: |
| 629 | decode_configs(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 631 | c->cputype = CPU_LOONGSON1; |
Ralf Baechle | b4672d3 | 2005-12-08 14:04:24 +0000 | [diff] [blame] | 632 | |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 633 | switch (c->processor_id & PRID_REV_MASK) { |
| 634 | case PRID_REV_LOONGSON1B: |
| 635 | __cpu_name[cpu] = "Loongson 1B"; |
Ralf Baechle | b4672d3 | 2005-12-08 14:04:24 +0000 | [diff] [blame] | 636 | break; |
Ralf Baechle | b4672d3 | 2005-12-08 14:04:24 +0000 | [diff] [blame] | 637 | } |
Kelvin Cheung | 2fa3639 | 2012-06-20 20:05:32 +0100 | [diff] [blame] | 638 | |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 639 | break; |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 640 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | } |
| 642 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 643 | static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | { |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 645 | decode_configs(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | switch (c->processor_id & 0xff00) { |
| 647 | case PRID_IMP_4KC: |
| 648 | c->cputype = CPU_4KC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 649 | __cpu_name[cpu] = "MIPS 4Kc"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | break; |
| 651 | case PRID_IMP_4KEC: |
Ralf Baechle | 2b07bd0 | 2005-04-08 20:36:05 +0000 | [diff] [blame] | 652 | case PRID_IMP_4KECR2: |
| 653 | c->cputype = CPU_4KEC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 654 | __cpu_name[cpu] = "MIPS 4KEc"; |
Ralf Baechle | 2b07bd0 | 2005-04-08 20:36:05 +0000 | [diff] [blame] | 655 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | case PRID_IMP_4KSC: |
Ralf Baechle | 8afcb5d | 2005-10-04 15:01:26 +0100 | [diff] [blame] | 657 | case PRID_IMP_4KSD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | c->cputype = CPU_4KSC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 659 | __cpu_name[cpu] = "MIPS 4KSc"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | break; |
| 661 | case PRID_IMP_5KC: |
| 662 | c->cputype = CPU_5KC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 663 | __cpu_name[cpu] = "MIPS 5Kc"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | break; |
Leonid Yegoshin | 78d4803 | 2012-07-06 21:56:01 +0200 | [diff] [blame] | 665 | case PRID_IMP_5KE: |
| 666 | c->cputype = CPU_5KE; |
| 667 | __cpu_name[cpu] = "MIPS 5KE"; |
| 668 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | case PRID_IMP_20KC: |
| 670 | c->cputype = CPU_20KC; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 671 | __cpu_name[cpu] = "MIPS 20Kc"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | break; |
| 673 | case PRID_IMP_24K: |
| 674 | c->cputype = CPU_24K; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 675 | __cpu_name[cpu] = "MIPS 24Kc"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | break; |
John Crispin | 42f3cae | 2013-01-11 22:44:10 +0100 | [diff] [blame] | 677 | case PRID_IMP_24KE: |
| 678 | c->cputype = CPU_24K; |
| 679 | __cpu_name[cpu] = "MIPS 24KEc"; |
| 680 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | case PRID_IMP_25KF: |
| 682 | c->cputype = CPU_25KF; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 683 | __cpu_name[cpu] = "MIPS 25Kc"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | break; |
Ralf Baechle | bbc7f22 | 2005-07-12 16:12:05 +0000 | [diff] [blame] | 685 | case PRID_IMP_34K: |
| 686 | c->cputype = CPU_34K; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 687 | __cpu_name[cpu] = "MIPS 34Kc"; |
Ralf Baechle | bbc7f22 | 2005-07-12 16:12:05 +0000 | [diff] [blame] | 688 | break; |
Chris Dearman | c620953 | 2006-05-02 14:08:46 +0100 | [diff] [blame] | 689 | case PRID_IMP_74K: |
| 690 | c->cputype = CPU_74K; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 691 | __cpu_name[cpu] = "MIPS 74Kc"; |
Chris Dearman | c620953 | 2006-05-02 14:08:46 +0100 | [diff] [blame] | 692 | break; |
Steven J. Hill | 113c62d | 2012-07-06 23:56:00 +0200 | [diff] [blame] | 693 | case PRID_IMP_M14KC: |
| 694 | c->cputype = CPU_M14KC; |
| 695 | __cpu_name[cpu] = "MIPS M14Kc"; |
| 696 | break; |
Steven J. Hill | f8fa481 | 2012-12-07 03:51:35 +0000 | [diff] [blame] | 697 | case PRID_IMP_M14KEC: |
| 698 | c->cputype = CPU_M14KEC; |
| 699 | __cpu_name[cpu] = "MIPS M14KEc"; |
| 700 | break; |
Ralf Baechle | 39b8d52 | 2008-04-28 17:14:26 +0100 | [diff] [blame] | 701 | case PRID_IMP_1004K: |
| 702 | c->cputype = CPU_1004K; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 703 | __cpu_name[cpu] = "MIPS 1004Kc"; |
Ralf Baechle | 39b8d52 | 2008-04-28 17:14:26 +0100 | [diff] [blame] | 704 | break; |
Steven J. Hill | 006a851 | 2012-06-26 04:11:03 +0000 | [diff] [blame] | 705 | case PRID_IMP_1074K: |
| 706 | c->cputype = CPU_74K; |
| 707 | __cpu_name[cpu] = "MIPS 1074Kc"; |
| 708 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } |
Chris Dearman | 0b6d497 | 2007-09-13 12:32:02 +0100 | [diff] [blame] | 710 | |
| 711 | spram_config(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | } |
| 713 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 714 | static inline void cpu_probe_alchemy(struct cpuinfo_mips *c, unsigned int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | { |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 716 | decode_configs(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | switch (c->processor_id & 0xff00) { |
| 718 | case PRID_IMP_AU1_REV1: |
| 719 | case PRID_IMP_AU1_REV2: |
Manuel Lauss | 270717a | 2009-03-25 17:49:28 +0100 | [diff] [blame] | 720 | c->cputype = CPU_ALCHEMY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | switch ((c->processor_id >> 24) & 0xff) { |
| 722 | case 0: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 723 | __cpu_name[cpu] = "Au1000"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | break; |
| 725 | case 1: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 726 | __cpu_name[cpu] = "Au1500"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | break; |
| 728 | case 2: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 729 | __cpu_name[cpu] = "Au1100"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | break; |
| 731 | case 3: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 732 | __cpu_name[cpu] = "Au1550"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | break; |
Pete Popov | e3ad1c2 | 2005-03-01 06:33:16 +0000 | [diff] [blame] | 734 | case 4: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 735 | __cpu_name[cpu] = "Au1200"; |
Manuel Lauss | 270717a | 2009-03-25 17:49:28 +0100 | [diff] [blame] | 736 | if ((c->processor_id & 0xff) == 2) |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 737 | __cpu_name[cpu] = "Au1250"; |
Manuel Lauss | 237cfee | 2007-12-06 09:07:55 +0100 | [diff] [blame] | 738 | break; |
| 739 | case 5: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 740 | __cpu_name[cpu] = "Au1210"; |
Pete Popov | e3ad1c2 | 2005-03-01 06:33:16 +0000 | [diff] [blame] | 741 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | default: |
Manuel Lauss | 270717a | 2009-03-25 17:49:28 +0100 | [diff] [blame] | 743 | __cpu_name[cpu] = "Au1xxx"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | break; |
| 745 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | break; |
| 747 | } |
| 748 | } |
| 749 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 750 | static inline void cpu_probe_sibyte(struct cpuinfo_mips *c, unsigned int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | { |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 752 | decode_configs(c); |
Ralf Baechle | 02cf211 | 2005-10-01 13:06:32 +0100 | [diff] [blame] | 753 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | switch (c->processor_id & 0xff00) { |
| 755 | case PRID_IMP_SB1: |
| 756 | c->cputype = CPU_SB1; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 757 | __cpu_name[cpu] = "SiByte SB1"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | /* FPU in pass1 is known to have issues. */ |
Ralf Baechle | aa32374 | 2006-05-29 00:02:12 +0100 | [diff] [blame] | 759 | if ((c->processor_id & 0xff) < 0x02) |
Ralf Baechle | 010b853 | 2006-01-29 18:42:08 +0000 | [diff] [blame] | 760 | c->options &= ~(MIPS_CPU_FPU | MIPS_CPU_32FPR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | break; |
Andrew Isaacson | 93ce2f52 | 2005-10-19 23:56:20 -0700 | [diff] [blame] | 762 | case PRID_IMP_SB1A: |
| 763 | c->cputype = CPU_SB1A; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 764 | __cpu_name[cpu] = "SiByte SB1A"; |
Andrew Isaacson | 93ce2f52 | 2005-10-19 23:56:20 -0700 | [diff] [blame] | 765 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | } |
| 767 | } |
| 768 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 769 | static inline void cpu_probe_sandcraft(struct cpuinfo_mips *c, unsigned int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | { |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 771 | decode_configs(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | switch (c->processor_id & 0xff00) { |
| 773 | case PRID_IMP_SR71000: |
| 774 | c->cputype = CPU_SR71000; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 775 | __cpu_name[cpu] = "Sandcraft SR71000"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | c->scache.ways = 8; |
| 777 | c->tlbsize = 64; |
| 778 | break; |
| 779 | } |
| 780 | } |
| 781 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 782 | static inline void cpu_probe_nxp(struct cpuinfo_mips *c, unsigned int cpu) |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 783 | { |
| 784 | decode_configs(c); |
| 785 | switch (c->processor_id & 0xff00) { |
| 786 | case PRID_IMP_PR4450: |
| 787 | c->cputype = CPU_PR4450; |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 788 | __cpu_name[cpu] = "Philips PR4450"; |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 789 | set_isa(c, MIPS_CPU_ISA_M32R1); |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 790 | break; |
Pete Popov | bdf21b1 | 2005-07-14 17:47:57 +0000 | [diff] [blame] | 791 | } |
| 792 | } |
| 793 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 794 | static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu) |
Aurelien Jarno | 1c0c13e | 2007-09-25 15:40:12 +0200 | [diff] [blame] | 795 | { |
| 796 | decode_configs(c); |
| 797 | switch (c->processor_id & 0xff00) { |
Kevin Cernekee | 190fca3 | 2010-11-23 10:26:45 -0800 | [diff] [blame] | 798 | case PRID_IMP_BMIPS32_REV4: |
| 799 | case PRID_IMP_BMIPS32_REV8: |
Kevin Cernekee | 602977b | 2010-10-16 14:22:30 -0700 | [diff] [blame] | 800 | c->cputype = CPU_BMIPS32; |
| 801 | __cpu_name[cpu] = "Broadcom BMIPS32"; |
Kevin Cernekee | 06785df | 2011-04-16 11:29:28 -0700 | [diff] [blame] | 802 | set_elf_platform(cpu, "bmips32"); |
Aurelien Jarno | 1c0c13e | 2007-09-25 15:40:12 +0200 | [diff] [blame] | 803 | break; |
Kevin Cernekee | 602977b | 2010-10-16 14:22:30 -0700 | [diff] [blame] | 804 | case PRID_IMP_BMIPS3300: |
| 805 | case PRID_IMP_BMIPS3300_ALT: |
| 806 | case PRID_IMP_BMIPS3300_BUG: |
| 807 | c->cputype = CPU_BMIPS3300; |
| 808 | __cpu_name[cpu] = "Broadcom BMIPS3300"; |
Kevin Cernekee | 06785df | 2011-04-16 11:29:28 -0700 | [diff] [blame] | 809 | set_elf_platform(cpu, "bmips3300"); |
Aurelien Jarno | 1c0c13e | 2007-09-25 15:40:12 +0200 | [diff] [blame] | 810 | break; |
Kevin Cernekee | 602977b | 2010-10-16 14:22:30 -0700 | [diff] [blame] | 811 | case PRID_IMP_BMIPS43XX: { |
| 812 | int rev = c->processor_id & 0xff; |
| 813 | |
| 814 | if (rev >= PRID_REV_BMIPS4380_LO && |
| 815 | rev <= PRID_REV_BMIPS4380_HI) { |
| 816 | c->cputype = CPU_BMIPS4380; |
| 817 | __cpu_name[cpu] = "Broadcom BMIPS4380"; |
Kevin Cernekee | 06785df | 2011-04-16 11:29:28 -0700 | [diff] [blame] | 818 | set_elf_platform(cpu, "bmips4380"); |
Kevin Cernekee | 602977b | 2010-10-16 14:22:30 -0700 | [diff] [blame] | 819 | } else { |
| 820 | c->cputype = CPU_BMIPS4350; |
| 821 | __cpu_name[cpu] = "Broadcom BMIPS4350"; |
Kevin Cernekee | 06785df | 2011-04-16 11:29:28 -0700 | [diff] [blame] | 822 | set_elf_platform(cpu, "bmips4350"); |
Maxime Bizon | 0de663e | 2009-08-18 13:23:37 +0100 | [diff] [blame] | 823 | } |
| 824 | break; |
Aurelien Jarno | 1c0c13e | 2007-09-25 15:40:12 +0200 | [diff] [blame] | 825 | } |
Kevin Cernekee | 602977b | 2010-10-16 14:22:30 -0700 | [diff] [blame] | 826 | case PRID_IMP_BMIPS5000: |
| 827 | c->cputype = CPU_BMIPS5000; |
| 828 | __cpu_name[cpu] = "Broadcom BMIPS5000"; |
Kevin Cernekee | 06785df | 2011-04-16 11:29:28 -0700 | [diff] [blame] | 829 | set_elf_platform(cpu, "bmips5000"); |
Kevin Cernekee | 602977b | 2010-10-16 14:22:30 -0700 | [diff] [blame] | 830 | c->options |= MIPS_CPU_ULRI; |
| 831 | break; |
Kevin Cernekee | 602977b | 2010-10-16 14:22:30 -0700 | [diff] [blame] | 832 | } |
Aurelien Jarno | 1c0c13e | 2007-09-25 15:40:12 +0200 | [diff] [blame] | 833 | } |
| 834 | |
David Daney | 0dd4781 | 2008-12-11 15:33:26 -0800 | [diff] [blame] | 835 | static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu) |
| 836 | { |
| 837 | decode_configs(c); |
| 838 | switch (c->processor_id & 0xff00) { |
| 839 | case PRID_IMP_CAVIUM_CN38XX: |
| 840 | case PRID_IMP_CAVIUM_CN31XX: |
| 841 | case PRID_IMP_CAVIUM_CN30XX: |
David Daney | 6f32946 | 2010-02-10 15:12:48 -0800 | [diff] [blame] | 842 | c->cputype = CPU_CAVIUM_OCTEON; |
| 843 | __cpu_name[cpu] = "Cavium Octeon"; |
| 844 | goto platform; |
David Daney | 0dd4781 | 2008-12-11 15:33:26 -0800 | [diff] [blame] | 845 | case PRID_IMP_CAVIUM_CN58XX: |
| 846 | case PRID_IMP_CAVIUM_CN56XX: |
| 847 | case PRID_IMP_CAVIUM_CN50XX: |
| 848 | case PRID_IMP_CAVIUM_CN52XX: |
David Daney | 6f32946 | 2010-02-10 15:12:48 -0800 | [diff] [blame] | 849 | c->cputype = CPU_CAVIUM_OCTEON_PLUS; |
| 850 | __cpu_name[cpu] = "Cavium Octeon+"; |
| 851 | platform: |
Robert Millan | c094c99 | 2011-04-18 11:37:55 -0700 | [diff] [blame] | 852 | set_elf_platform(cpu, "octeon"); |
David Daney | 0dd4781 | 2008-12-11 15:33:26 -0800 | [diff] [blame] | 853 | break; |
David Daney | a1431b6 | 2011-09-24 02:29:54 +0200 | [diff] [blame] | 854 | case PRID_IMP_CAVIUM_CN61XX: |
David Daney | 0e56b38 | 2010-10-07 16:03:45 -0700 | [diff] [blame] | 855 | case PRID_IMP_CAVIUM_CN63XX: |
David Daney | a1431b6 | 2011-09-24 02:29:54 +0200 | [diff] [blame] | 856 | case PRID_IMP_CAVIUM_CN66XX: |
| 857 | case PRID_IMP_CAVIUM_CN68XX: |
David Daney | 0e56b38 | 2010-10-07 16:03:45 -0700 | [diff] [blame] | 858 | c->cputype = CPU_CAVIUM_OCTEON2; |
| 859 | __cpu_name[cpu] = "Cavium Octeon II"; |
Robert Millan | c094c99 | 2011-04-18 11:37:55 -0700 | [diff] [blame] | 860 | set_elf_platform(cpu, "octeon2"); |
David Daney | 0e56b38 | 2010-10-07 16:03:45 -0700 | [diff] [blame] | 861 | break; |
David Daney | 0dd4781 | 2008-12-11 15:33:26 -0800 | [diff] [blame] | 862 | default: |
| 863 | printk(KERN_INFO "Unknown Octeon chip!\n"); |
| 864 | c->cputype = CPU_UNKNOWN; |
| 865 | break; |
| 866 | } |
| 867 | } |
| 868 | |
Lars-Peter Clausen | 83ccf69 | 2010-07-17 11:07:51 +0000 | [diff] [blame] | 869 | static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu) |
| 870 | { |
| 871 | decode_configs(c); |
| 872 | /* JZRISC does not implement the CP0 counter. */ |
| 873 | c->options &= ~MIPS_CPU_COUNTER; |
| 874 | switch (c->processor_id & 0xff00) { |
| 875 | case PRID_IMP_JZRISC: |
| 876 | c->cputype = CPU_JZRISC; |
| 877 | __cpu_name[cpu] = "Ingenic JZRISC"; |
| 878 | break; |
| 879 | default: |
| 880 | panic("Unknown Ingenic Processor ID!"); |
| 881 | break; |
| 882 | } |
| 883 | } |
| 884 | |
Jayachandran C | a7117c6 | 2011-05-11 12:04:58 +0530 | [diff] [blame] | 885 | static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu) |
| 886 | { |
| 887 | decode_configs(c); |
| 888 | |
Manuel Lauss | 809f36c | 2011-11-01 20:03:30 +0100 | [diff] [blame] | 889 | if ((c->processor_id & 0xff00) == PRID_IMP_NETLOGIC_AU13XX) { |
| 890 | c->cputype = CPU_ALCHEMY; |
| 891 | __cpu_name[cpu] = "Au1300"; |
| 892 | /* following stuff is not for Alchemy */ |
| 893 | return; |
| 894 | } |
| 895 | |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 896 | c->options = (MIPS_CPU_TLB | |
| 897 | MIPS_CPU_4KEX | |
Jayachandran C | a7117c6 | 2011-05-11 12:04:58 +0530 | [diff] [blame] | 898 | MIPS_CPU_COUNTER | |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 899 | MIPS_CPU_DIVEC | |
| 900 | MIPS_CPU_WATCH | |
| 901 | MIPS_CPU_EJTAG | |
Jayachandran C | a7117c6 | 2011-05-11 12:04:58 +0530 | [diff] [blame] | 902 | MIPS_CPU_LLSC); |
| 903 | |
| 904 | switch (c->processor_id & 0xff00) { |
Jayachandran C | 2aa54b2 | 2011-11-16 00:21:29 +0000 | [diff] [blame] | 905 | case PRID_IMP_NETLOGIC_XLP8XX: |
| 906 | case PRID_IMP_NETLOGIC_XLP3XX: |
Jayachandran C | a3d4fb2 | 2011-11-16 00:21:20 +0000 | [diff] [blame] | 907 | c->cputype = CPU_XLP; |
| 908 | __cpu_name[cpu] = "Netlogic XLP"; |
| 909 | break; |
| 910 | |
Jayachandran C | a7117c6 | 2011-05-11 12:04:58 +0530 | [diff] [blame] | 911 | case PRID_IMP_NETLOGIC_XLR732: |
| 912 | case PRID_IMP_NETLOGIC_XLR716: |
| 913 | case PRID_IMP_NETLOGIC_XLR532: |
| 914 | case PRID_IMP_NETLOGIC_XLR308: |
| 915 | case PRID_IMP_NETLOGIC_XLR532C: |
| 916 | case PRID_IMP_NETLOGIC_XLR516C: |
| 917 | case PRID_IMP_NETLOGIC_XLR508C: |
| 918 | case PRID_IMP_NETLOGIC_XLR308C: |
| 919 | c->cputype = CPU_XLR; |
| 920 | __cpu_name[cpu] = "Netlogic XLR"; |
| 921 | break; |
| 922 | |
| 923 | case PRID_IMP_NETLOGIC_XLS608: |
| 924 | case PRID_IMP_NETLOGIC_XLS408: |
| 925 | case PRID_IMP_NETLOGIC_XLS404: |
| 926 | case PRID_IMP_NETLOGIC_XLS208: |
| 927 | case PRID_IMP_NETLOGIC_XLS204: |
| 928 | case PRID_IMP_NETLOGIC_XLS108: |
| 929 | case PRID_IMP_NETLOGIC_XLS104: |
| 930 | case PRID_IMP_NETLOGIC_XLS616B: |
| 931 | case PRID_IMP_NETLOGIC_XLS608B: |
| 932 | case PRID_IMP_NETLOGIC_XLS416B: |
| 933 | case PRID_IMP_NETLOGIC_XLS412B: |
| 934 | case PRID_IMP_NETLOGIC_XLS408B: |
| 935 | case PRID_IMP_NETLOGIC_XLS404B: |
| 936 | c->cputype = CPU_XLR; |
| 937 | __cpu_name[cpu] = "Netlogic XLS"; |
| 938 | break; |
| 939 | |
| 940 | default: |
Jayachandran C | a3d4fb2 | 2011-11-16 00:21:20 +0000 | [diff] [blame] | 941 | pr_info("Unknown Netlogic chip id [%02x]!\n", |
Jayachandran C | a7117c6 | 2011-05-11 12:04:58 +0530 | [diff] [blame] | 942 | c->processor_id); |
| 943 | c->cputype = CPU_XLR; |
| 944 | break; |
| 945 | } |
| 946 | |
Jayachandran C | a3d4fb2 | 2011-11-16 00:21:20 +0000 | [diff] [blame] | 947 | if (c->cputype == CPU_XLP) { |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 948 | set_isa(c, MIPS_CPU_ISA_M64R2); |
Jayachandran C | a3d4fb2 | 2011-11-16 00:21:20 +0000 | [diff] [blame] | 949 | c->options |= (MIPS_CPU_FPU | MIPS_CPU_ULRI | MIPS_CPU_MCHECK); |
| 950 | /* This will be updated again after all threads are woken up */ |
| 951 | c->tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1; |
| 952 | } else { |
Steven J. Hill | a96102b | 2012-12-07 04:31:36 +0000 | [diff] [blame] | 953 | set_isa(c, MIPS_CPU_ISA_M64R1); |
Jayachandran C | a3d4fb2 | 2011-11-16 00:21:20 +0000 | [diff] [blame] | 954 | c->tlbsize = ((read_c0_config1() >> 25) & 0x3f) + 1; |
| 955 | } |
Jayachandran C | 7777b93 | 2013-06-11 14:41:35 +0000 | [diff] [blame] | 956 | c->kscratch_mask = 0xf; |
Jayachandran C | a7117c6 | 2011-05-11 12:04:58 +0530 | [diff] [blame] | 957 | } |
| 958 | |
David Daney | 949e51b | 2010-10-14 11:32:33 -0700 | [diff] [blame] | 959 | #ifdef CONFIG_64BIT |
| 960 | /* For use by uaccess.h */ |
| 961 | u64 __ua_limit; |
| 962 | EXPORT_SYMBOL(__ua_limit); |
| 963 | #endif |
| 964 | |
Ralf Baechle | 9966db25 | 2007-10-11 23:46:17 +0100 | [diff] [blame] | 965 | const char *__cpu_name[NR_CPUS]; |
David Daney | 874fd3b | 2010-01-28 16:52:12 -0800 | [diff] [blame] | 966 | const char *__elf_platform; |
Ralf Baechle | 9966db25 | 2007-10-11 23:46:17 +0100 | [diff] [blame] | 967 | |
Ralf Baechle | 234fcd1 | 2008-03-08 09:56:28 +0000 | [diff] [blame] | 968 | __cpuinit void cpu_probe(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | { |
| 970 | struct cpuinfo_mips *c = ¤t_cpu_data; |
Ralf Baechle | 9966db25 | 2007-10-11 23:46:17 +0100 | [diff] [blame] | 971 | unsigned int cpu = smp_processor_id(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 973 | c->processor_id = PRID_IMP_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | c->fpu_id = FPIR_IMP_NONE; |
| 975 | c->cputype = CPU_UNKNOWN; |
| 976 | |
| 977 | c->processor_id = read_c0_prid(); |
| 978 | switch (c->processor_id & 0xff0000) { |
| 979 | case PRID_COMP_LEGACY: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 980 | cpu_probe_legacy(c, cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | break; |
| 982 | case PRID_COMP_MIPS: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 983 | cpu_probe_mips(c, cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | break; |
| 985 | case PRID_COMP_ALCHEMY: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 986 | cpu_probe_alchemy(c, cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | break; |
| 988 | case PRID_COMP_SIBYTE: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 989 | cpu_probe_sibyte(c, cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | break; |
Aurelien Jarno | 1c0c13e | 2007-09-25 15:40:12 +0200 | [diff] [blame] | 991 | case PRID_COMP_BROADCOM: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 992 | cpu_probe_broadcom(c, cpu); |
Aurelien Jarno | 1c0c13e | 2007-09-25 15:40:12 +0200 | [diff] [blame] | 993 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | case PRID_COMP_SANDCRAFT: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 995 | cpu_probe_sandcraft(c, cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | break; |
Daniel Laird | a92b058 | 2008-03-06 09:07:18 +0000 | [diff] [blame] | 997 | case PRID_COMP_NXP: |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 998 | cpu_probe_nxp(c, cpu); |
Ralf Baechle | a3dddd5 | 2006-03-11 08:18:41 +0000 | [diff] [blame] | 999 | break; |
David Daney | 0dd4781 | 2008-12-11 15:33:26 -0800 | [diff] [blame] | 1000 | case PRID_COMP_CAVIUM: |
| 1001 | cpu_probe_cavium(c, cpu); |
| 1002 | break; |
Lars-Peter Clausen | 83ccf69 | 2010-07-17 11:07:51 +0000 | [diff] [blame] | 1003 | case PRID_COMP_INGENIC: |
| 1004 | cpu_probe_ingenic(c, cpu); |
| 1005 | break; |
Jayachandran C | a7117c6 | 2011-05-11 12:04:58 +0530 | [diff] [blame] | 1006 | case PRID_COMP_NETLOGIC: |
| 1007 | cpu_probe_netlogic(c, cpu); |
| 1008 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | } |
Franck Bui-Huu | dec8b1c | 2007-10-08 16:11:51 +0200 | [diff] [blame] | 1010 | |
Ralf Baechle | cea7e2d | 2008-10-30 13:38:45 +0000 | [diff] [blame] | 1011 | BUG_ON(!__cpu_name[cpu]); |
| 1012 | BUG_ON(c->cputype == CPU_UNKNOWN); |
| 1013 | |
Franck Bui-Huu | dec8b1c | 2007-10-08 16:11:51 +0200 | [diff] [blame] | 1014 | /* |
| 1015 | * Platform code can force the cpu type to optimize code |
| 1016 | * generation. In that case be sure the cpu type is correctly |
| 1017 | * manually setup otherwise it could trigger some nasty bugs. |
| 1018 | */ |
| 1019 | BUG_ON(current_cpu_type() != c->cputype); |
| 1020 | |
Kevin Cernekee | 0103d23 | 2010-05-02 14:43:52 -0700 | [diff] [blame] | 1021 | if (mips_fpu_disabled) |
| 1022 | c->options &= ~MIPS_CPU_FPU; |
| 1023 | |
| 1024 | if (mips_dsp_disabled) |
Steven J. Hill | ee80f7c7 | 2012-08-03 10:26:04 -0500 | [diff] [blame] | 1025 | c->ases &= ~(MIPS_ASE_DSP | MIPS_ASE_DSP2P); |
Kevin Cernekee | 0103d23 | 2010-05-02 14:43:52 -0700 | [diff] [blame] | 1026 | |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 1027 | if (c->options & MIPS_CPU_FPU) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | c->fpu_id = cpu_get_fpu_id(); |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 1029 | |
Deng-Cheng Zhu | adb3789 | 2013-04-01 18:14:28 +0000 | [diff] [blame] | 1030 | if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M32R2 | |
| 1031 | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M64R2)) { |
Ralf Baechle | 4194318 | 2005-05-05 16:45:59 +0000 | [diff] [blame] | 1032 | if (c->fpu_id & MIPS_FPIR_3D) |
| 1033 | c->ases |= MIPS_ASE_MIPS3D; |
| 1034 | } |
| 1035 | } |
Ralf Baechle | 9966db25 | 2007-10-11 23:46:17 +0100 | [diff] [blame] | 1036 | |
Al Cooper | da4b62c | 2012-07-13 16:44:51 -0400 | [diff] [blame] | 1037 | if (cpu_has_mips_r2) { |
Ralf Baechle | f6771db | 2007-11-08 18:02:29 +0000 | [diff] [blame] | 1038 | c->srsets = ((read_c0_srsctl() >> 26) & 0x0f) + 1; |
Al Cooper | da4b62c | 2012-07-13 16:44:51 -0400 | [diff] [blame] | 1039 | /* R2 has Performance Counter Interrupt indicator */ |
| 1040 | c->options |= MIPS_CPU_PCI; |
| 1041 | } |
Ralf Baechle | f6771db | 2007-11-08 18:02:29 +0000 | [diff] [blame] | 1042 | else |
| 1043 | c->srsets = 1; |
Guenter Roeck | 91dfc42 | 2010-02-02 08:52:20 -0800 | [diff] [blame] | 1044 | |
| 1045 | cpu_probe_vmbits(c); |
David Daney | 949e51b | 2010-10-14 11:32:33 -0700 | [diff] [blame] | 1046 | |
| 1047 | #ifdef CONFIG_64BIT |
| 1048 | if (cpu == 0) |
| 1049 | __ua_limit = ~((1ull << cpu_vmbits) - 1); |
| 1050 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | } |
| 1052 | |
Ralf Baechle | 234fcd1 | 2008-03-08 09:56:28 +0000 | [diff] [blame] | 1053 | __cpuinit void cpu_report(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | { |
| 1055 | struct cpuinfo_mips *c = ¤t_cpu_data; |
| 1056 | |
Ralf Baechle | 9966db25 | 2007-10-11 23:46:17 +0100 | [diff] [blame] | 1057 | printk(KERN_INFO "CPU revision is: %08x (%s)\n", |
| 1058 | c->processor_id, cpu_name_string()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | if (c->options & MIPS_CPU_FPU) |
Ralf Baechle | 9966db25 | 2007-10-11 23:46:17 +0100 | [diff] [blame] | 1060 | printk(KERN_INFO "FPU revision is: %08x\n", c->fpu_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | } |