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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Processor capabilities determination functions. | |
3 | * | |
4 | * Copyright (C) xxxx the Anonymous | |
010b853b | 5 | * Copyright (C) 1994 - 2006 Ralf Baechle |
4194318c | 6 | * Copyright (C) 2003, 2004 Maciej W. Rozycki |
70342287 | 7 | * Copyright (C) 2001, 2004, 2011, 2012 MIPS Technologies, Inc. |
1da177e4 LT |
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 | */ | |
1da177e4 LT |
14 | #include <linux/init.h> |
15 | #include <linux/kernel.h> | |
16 | #include <linux/ptrace.h> | |
631330f5 | 17 | #include <linux/smp.h> |
1da177e4 | 18 | #include <linux/stddef.h> |
73bc256d | 19 | #include <linux/export.h> |
1da177e4 | 20 | |
5759906c | 21 | #include <asm/bugs.h> |
1da177e4 LT |
22 | #include <asm/cpu.h> |
23 | #include <asm/fpu.h> | |
24 | #include <asm/mipsregs.h> | |
654f57bf | 25 | #include <asm/watch.h> |
06372a63 | 26 | #include <asm/elf.h> |
a074f0e8 | 27 | #include <asm/spram.h> |
949e51be DD |
28 | #include <asm/uaccess.h> |
29 | ||
078a55fc | 30 | static int mips_fpu_disabled; |
0103d23f KC |
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 | ||
078a55fc | 42 | int mips_dsp_disabled; |
0103d23f KC |
43 | |
44 | static int __init dsp_disable(char *s) | |
45 | { | |
ee80f7c7 | 46 | cpu_data[0].ases &= ~(MIPS_ASE_DSP | MIPS_ASE_DSP2P); |
0103d23f KC |
47 | mips_dsp_disabled = 1; |
48 | ||
49 | return 1; | |
50 | } | |
51 | ||
52 | __setup("nodsp", dsp_disable); | |
53 | ||
9267a30d MSJ |
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 | ||
1da177e4 LT |
73 | void __init check_bugs32(void) |
74 | { | |
9267a30d | 75 | check_errata(); |
1da177e4 LT |
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 | ||
c094c99e RM |
100 | static inline void set_elf_platform(int cpu, const char *plat) |
101 | { | |
102 | if (cpu == 0) | |
103 | __elf_platform = plat; | |
104 | } | |
105 | ||
1da177e4 LT |
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 | ||
91dfc423 GR |
128 | static inline void cpu_probe_vmbits(struct cpuinfo_mips *c) |
129 | { | |
130 | #ifdef __NEED_VMBITS_PROBE | |
5b7efa89 | 131 | write_c0_entryhi(0x3fffffffffffe000ULL); |
91dfc423 | 132 | back_to_back_c0_hazard(); |
5b7efa89 | 133 | c->vmbits = fls64(read_c0_entryhi() & 0x3fffffffffffe000ULL); |
91dfc423 GR |
134 | #endif |
135 | } | |
136 | ||
078a55fc | 137 | static void set_isa(struct cpuinfo_mips *c, unsigned int isa) |
a96102be SH |
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: | |
1990e542 | 149 | c->isa_level |= MIPS_CPU_ISA_II | MIPS_CPU_ISA_III; |
a96102be SH |
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; | |
a96102be SH |
158 | break; |
159 | } | |
160 | } | |
161 | ||
078a55fc | 162 | static char unknown_isa[] = KERN_ERR \ |
2fa36399 KC |
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: | |
a96102be | 179 | set_isa(c, MIPS_CPU_ISA_M32R1); |
2fa36399 KC |
180 | break; |
181 | case 1: | |
a96102be | 182 | set_isa(c, MIPS_CPU_ISA_M32R2); |
2fa36399 KC |
183 | break; |
184 | default: | |
185 | goto unknown; | |
186 | } | |
187 | break; | |
188 | case 2: | |
189 | switch ((config0 & MIPS_CONF_AR) >> 10) { | |
190 | case 0: | |
a96102be | 191 | set_isa(c, MIPS_CPU_ISA_M64R1); |
2fa36399 KC |
192 | break; |
193 | case 1: | |
a96102be | 194 | set_isa(c, MIPS_CPU_ISA_M64R2); |
2fa36399 KC |
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 | ||
b2ab4f08 | 252 | if (config3 & MIPS_CONF3_SM) { |
2fa36399 | 253 | c->ases |= MIPS_ASE_SMARTMIPS; |
b2ab4f08 SH |
254 | c->options |= MIPS_CPU_RIXI; |
255 | } | |
256 | if (config3 & MIPS_CONF3_RXI) | |
257 | c->options |= MIPS_CPU_RIXI; | |
2fa36399 KC |
258 | if (config3 & MIPS_CONF3_DSP) |
259 | c->ases |= MIPS_ASE_DSP; | |
ee80f7c7 SH |
260 | if (config3 & MIPS_CONF3_DSP2P) |
261 | c->ases |= MIPS_ASE_DSP2P; | |
2fa36399 KC |
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; | |
f8fa4811 SH |
270 | if (config3 & MIPS_CONF3_ISA) |
271 | c->options |= MIPS_CPU_MICROMIPS; | |
1e7decdb DD |
272 | if (config3 & MIPS_CONF3_VZ) |
273 | c->ases |= MIPS_ASE_VZ; | |
2fa36399 KC |
274 | |
275 | return config3 & MIPS_CONF_M; | |
276 | } | |
277 | ||
278 | static inline unsigned int decode_config4(struct cpuinfo_mips *c) | |
279 | { | |
280 | unsigned int config4; | |
281 | ||
282 | config4 = read_c0_config4(); | |
283 | ||
284 | if ((config4 & MIPS_CONF4_MMUEXTDEF) == MIPS_CONF4_MMUEXTDEF_MMUSIZEEXT | |
285 | && cpu_has_tlb) | |
286 | c->tlbsize += (config4 & MIPS_CONF4_MMUSIZEEXT) * 0x40; | |
287 | ||
288 | c->kscratch_mask = (config4 >> 16) & 0xff; | |
289 | ||
290 | return config4 & MIPS_CONF_M; | |
291 | } | |
292 | ||
078a55fc | 293 | static void decode_configs(struct cpuinfo_mips *c) |
2fa36399 KC |
294 | { |
295 | int ok; | |
296 | ||
297 | /* MIPS32 or MIPS64 compliant CPU. */ | |
298 | c->options = MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE | MIPS_CPU_COUNTER | | |
299 | MIPS_CPU_DIVEC | MIPS_CPU_LLSC | MIPS_CPU_MCHECK; | |
300 | ||
301 | c->scache.flags = MIPS_CACHE_NOT_PRESENT; | |
302 | ||
303 | ok = decode_config0(c); /* Read Config registers. */ | |
70342287 | 304 | BUG_ON(!ok); /* Arch spec violation! */ |
2fa36399 KC |
305 | if (ok) |
306 | ok = decode_config1(c); | |
307 | if (ok) | |
308 | ok = decode_config2(c); | |
309 | if (ok) | |
310 | ok = decode_config3(c); | |
311 | if (ok) | |
312 | ok = decode_config4(c); | |
313 | ||
314 | mips_probe_watch_registers(c); | |
315 | ||
316 | if (cpu_has_mips_r2) | |
317 | c->core = read_c0_ebase() & 0x3ff; | |
318 | } | |
319 | ||
02cf2119 | 320 | #define R4K_OPTS (MIPS_CPU_TLB | MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE \ |
1da177e4 LT |
321 | | MIPS_CPU_COUNTER) |
322 | ||
cea7e2df | 323 | static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu) |
1da177e4 LT |
324 | { |
325 | switch (c->processor_id & 0xff00) { | |
326 | case PRID_IMP_R2000: | |
327 | c->cputype = CPU_R2000; | |
cea7e2df | 328 | __cpu_name[cpu] = "R2000"; |
02cf2119 | 329 | c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE | |
03751e79 | 330 | MIPS_CPU_NOFPUEX; |
1da177e4 LT |
331 | if (__cpu_has_fpu()) |
332 | c->options |= MIPS_CPU_FPU; | |
333 | c->tlbsize = 64; | |
334 | break; | |
335 | case PRID_IMP_R3000: | |
cea7e2df RB |
336 | if ((c->processor_id & 0xff) == PRID_REV_R3000A) { |
337 | if (cpu_has_confreg()) { | |
1da177e4 | 338 | c->cputype = CPU_R3081E; |
cea7e2df RB |
339 | __cpu_name[cpu] = "R3081"; |
340 | } else { | |
1da177e4 | 341 | c->cputype = CPU_R3000A; |
cea7e2df RB |
342 | __cpu_name[cpu] = "R3000A"; |
343 | } | |
cea7e2df | 344 | } else { |
1da177e4 | 345 | c->cputype = CPU_R3000; |
cea7e2df RB |
346 | __cpu_name[cpu] = "R3000"; |
347 | } | |
02cf2119 | 348 | c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE | |
03751e79 | 349 | MIPS_CPU_NOFPUEX; |
1da177e4 LT |
350 | if (__cpu_has_fpu()) |
351 | c->options |= MIPS_CPU_FPU; | |
352 | c->tlbsize = 64; | |
353 | break; | |
354 | case PRID_IMP_R4000: | |
355 | if (read_c0_config() & CONF_SC) { | |
cea7e2df | 356 | if ((c->processor_id & 0xff) >= PRID_REV_R4400) { |
1da177e4 | 357 | c->cputype = CPU_R4400PC; |
cea7e2df RB |
358 | __cpu_name[cpu] = "R4400PC"; |
359 | } else { | |
1da177e4 | 360 | c->cputype = CPU_R4000PC; |
cea7e2df RB |
361 | __cpu_name[cpu] = "R4000PC"; |
362 | } | |
1da177e4 | 363 | } else { |
cea7e2df | 364 | if ((c->processor_id & 0xff) >= PRID_REV_R4400) { |
1da177e4 | 365 | c->cputype = CPU_R4400SC; |
cea7e2df RB |
366 | __cpu_name[cpu] = "R4400SC"; |
367 | } else { | |
1da177e4 | 368 | c->cputype = CPU_R4000SC; |
cea7e2df RB |
369 | __cpu_name[cpu] = "R4000SC"; |
370 | } | |
1da177e4 LT |
371 | } |
372 | ||
a96102be | 373 | set_isa(c, MIPS_CPU_ISA_III); |
1da177e4 | 374 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 SH |
375 | MIPS_CPU_WATCH | MIPS_CPU_VCE | |
376 | MIPS_CPU_LLSC; | |
1da177e4 LT |
377 | c->tlbsize = 48; |
378 | break; | |
379 | case PRID_IMP_VR41XX: | |
9f91e506 YY |
380 | set_isa(c, MIPS_CPU_ISA_III); |
381 | c->options = R4K_OPTS; | |
382 | c->tlbsize = 32; | |
1da177e4 | 383 | switch (c->processor_id & 0xf0) { |
1da177e4 LT |
384 | case PRID_REV_VR4111: |
385 | c->cputype = CPU_VR4111; | |
cea7e2df | 386 | __cpu_name[cpu] = "NEC VR4111"; |
1da177e4 | 387 | break; |
1da177e4 LT |
388 | case PRID_REV_VR4121: |
389 | c->cputype = CPU_VR4121; | |
cea7e2df | 390 | __cpu_name[cpu] = "NEC VR4121"; |
1da177e4 LT |
391 | break; |
392 | case PRID_REV_VR4122: | |
cea7e2df | 393 | if ((c->processor_id & 0xf) < 0x3) { |
1da177e4 | 394 | c->cputype = CPU_VR4122; |
cea7e2df RB |
395 | __cpu_name[cpu] = "NEC VR4122"; |
396 | } else { | |
1da177e4 | 397 | c->cputype = CPU_VR4181A; |
cea7e2df RB |
398 | __cpu_name[cpu] = "NEC VR4181A"; |
399 | } | |
1da177e4 LT |
400 | break; |
401 | case PRID_REV_VR4130: | |
cea7e2df | 402 | if ((c->processor_id & 0xf) < 0x4) { |
1da177e4 | 403 | c->cputype = CPU_VR4131; |
cea7e2df RB |
404 | __cpu_name[cpu] = "NEC VR4131"; |
405 | } else { | |
1da177e4 | 406 | c->cputype = CPU_VR4133; |
9f91e506 | 407 | c->options |= MIPS_CPU_LLSC; |
cea7e2df RB |
408 | __cpu_name[cpu] = "NEC VR4133"; |
409 | } | |
1da177e4 LT |
410 | break; |
411 | default: | |
412 | printk(KERN_INFO "Unexpected CPU of NEC VR4100 series\n"); | |
413 | c->cputype = CPU_VR41XX; | |
cea7e2df | 414 | __cpu_name[cpu] = "NEC Vr41xx"; |
1da177e4 LT |
415 | break; |
416 | } | |
1da177e4 LT |
417 | break; |
418 | case PRID_IMP_R4300: | |
419 | c->cputype = CPU_R4300; | |
cea7e2df | 420 | __cpu_name[cpu] = "R4300"; |
a96102be | 421 | set_isa(c, MIPS_CPU_ISA_III); |
1da177e4 | 422 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 423 | MIPS_CPU_LLSC; |
1da177e4 LT |
424 | c->tlbsize = 32; |
425 | break; | |
426 | case PRID_IMP_R4600: | |
427 | c->cputype = CPU_R4600; | |
cea7e2df | 428 | __cpu_name[cpu] = "R4600"; |
a96102be | 429 | set_isa(c, MIPS_CPU_ISA_III); |
075e7502 TS |
430 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
431 | MIPS_CPU_LLSC; | |
1da177e4 LT |
432 | c->tlbsize = 48; |
433 | break; | |
434 | #if 0 | |
03751e79 | 435 | case PRID_IMP_R4650: |
1da177e4 LT |
436 | /* |
437 | * This processor doesn't have an MMU, so it's not | |
438 | * "real easy" to run Linux on it. It is left purely | |
439 | * for documentation. Commented out because it shares | |
440 | * it's c0_prid id number with the TX3900. | |
441 | */ | |
a3dddd56 | 442 | c->cputype = CPU_R4650; |
cea7e2df | 443 | __cpu_name[cpu] = "R4650"; |
a96102be | 444 | set_isa(c, MIPS_CPU_ISA_III); |
1da177e4 | 445 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_LLSC; |
03751e79 | 446 | c->tlbsize = 48; |
1da177e4 LT |
447 | break; |
448 | #endif | |
449 | case PRID_IMP_TX39: | |
02cf2119 | 450 | c->options = MIPS_CPU_TLB | MIPS_CPU_TX39_CACHE; |
1da177e4 LT |
451 | |
452 | if ((c->processor_id & 0xf0) == (PRID_REV_TX3927 & 0xf0)) { | |
453 | c->cputype = CPU_TX3927; | |
cea7e2df | 454 | __cpu_name[cpu] = "TX3927"; |
1da177e4 LT |
455 | c->tlbsize = 64; |
456 | } else { | |
457 | switch (c->processor_id & 0xff) { | |
458 | case PRID_REV_TX3912: | |
459 | c->cputype = CPU_TX3912; | |
cea7e2df | 460 | __cpu_name[cpu] = "TX3912"; |
1da177e4 LT |
461 | c->tlbsize = 32; |
462 | break; | |
463 | case PRID_REV_TX3922: | |
464 | c->cputype = CPU_TX3922; | |
cea7e2df | 465 | __cpu_name[cpu] = "TX3922"; |
1da177e4 LT |
466 | c->tlbsize = 64; |
467 | break; | |
1da177e4 LT |
468 | } |
469 | } | |
470 | break; | |
471 | case PRID_IMP_R4700: | |
472 | c->cputype = CPU_R4700; | |
cea7e2df | 473 | __cpu_name[cpu] = "R4700"; |
a96102be | 474 | set_isa(c, MIPS_CPU_ISA_III); |
1da177e4 | 475 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 476 | MIPS_CPU_LLSC; |
1da177e4 LT |
477 | c->tlbsize = 48; |
478 | break; | |
479 | case PRID_IMP_TX49: | |
480 | c->cputype = CPU_TX49XX; | |
cea7e2df | 481 | __cpu_name[cpu] = "R49XX"; |
a96102be | 482 | set_isa(c, MIPS_CPU_ISA_III); |
1da177e4 LT |
483 | c->options = R4K_OPTS | MIPS_CPU_LLSC; |
484 | if (!(c->processor_id & 0x08)) | |
485 | c->options |= MIPS_CPU_FPU | MIPS_CPU_32FPR; | |
486 | c->tlbsize = 48; | |
487 | break; | |
488 | case PRID_IMP_R5000: | |
489 | c->cputype = CPU_R5000; | |
cea7e2df | 490 | __cpu_name[cpu] = "R5000"; |
a96102be | 491 | set_isa(c, MIPS_CPU_ISA_IV); |
1da177e4 | 492 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 493 | MIPS_CPU_LLSC; |
1da177e4 LT |
494 | c->tlbsize = 48; |
495 | break; | |
496 | case PRID_IMP_R5432: | |
497 | c->cputype = CPU_R5432; | |
cea7e2df | 498 | __cpu_name[cpu] = "R5432"; |
a96102be | 499 | set_isa(c, MIPS_CPU_ISA_IV); |
1da177e4 | 500 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 501 | MIPS_CPU_WATCH | MIPS_CPU_LLSC; |
1da177e4 LT |
502 | c->tlbsize = 48; |
503 | break; | |
504 | case PRID_IMP_R5500: | |
505 | c->cputype = CPU_R5500; | |
cea7e2df | 506 | __cpu_name[cpu] = "R5500"; |
a96102be | 507 | set_isa(c, MIPS_CPU_ISA_IV); |
1da177e4 | 508 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 509 | MIPS_CPU_WATCH | MIPS_CPU_LLSC; |
1da177e4 LT |
510 | c->tlbsize = 48; |
511 | break; | |
512 | case PRID_IMP_NEVADA: | |
513 | c->cputype = CPU_NEVADA; | |
cea7e2df | 514 | __cpu_name[cpu] = "Nevada"; |
a96102be | 515 | set_isa(c, MIPS_CPU_ISA_IV); |
1da177e4 | 516 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 517 | MIPS_CPU_DIVEC | MIPS_CPU_LLSC; |
1da177e4 LT |
518 | c->tlbsize = 48; |
519 | break; | |
520 | case PRID_IMP_R6000: | |
521 | c->cputype = CPU_R6000; | |
cea7e2df | 522 | __cpu_name[cpu] = "R6000"; |
a96102be | 523 | set_isa(c, MIPS_CPU_ISA_II); |
1da177e4 | 524 | c->options = MIPS_CPU_TLB | MIPS_CPU_FPU | |
03751e79 | 525 | MIPS_CPU_LLSC; |
1da177e4 LT |
526 | c->tlbsize = 32; |
527 | break; | |
528 | case PRID_IMP_R6000A: | |
529 | c->cputype = CPU_R6000A; | |
cea7e2df | 530 | __cpu_name[cpu] = "R6000A"; |
a96102be | 531 | set_isa(c, MIPS_CPU_ISA_II); |
1da177e4 | 532 | c->options = MIPS_CPU_TLB | MIPS_CPU_FPU | |
03751e79 | 533 | MIPS_CPU_LLSC; |
1da177e4 LT |
534 | c->tlbsize = 32; |
535 | break; | |
536 | case PRID_IMP_RM7000: | |
537 | c->cputype = CPU_RM7000; | |
cea7e2df | 538 | __cpu_name[cpu] = "RM7000"; |
a96102be | 539 | set_isa(c, MIPS_CPU_ISA_IV); |
1da177e4 | 540 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 541 | MIPS_CPU_LLSC; |
1da177e4 | 542 | /* |
70342287 | 543 | * Undocumented RM7000: Bit 29 in the info register of |
1da177e4 LT |
544 | * the RM7000 v2.0 indicates if the TLB has 48 or 64 |
545 | * entries. | |
546 | * | |
70342287 RB |
547 | * 29 1 => 64 entry JTLB |
548 | * 0 => 48 entry JTLB | |
1da177e4 LT |
549 | */ |
550 | c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48; | |
551 | break; | |
552 | case PRID_IMP_RM9000: | |
553 | c->cputype = CPU_RM9000; | |
cea7e2df | 554 | __cpu_name[cpu] = "RM9000"; |
a96102be | 555 | set_isa(c, MIPS_CPU_ISA_IV); |
1da177e4 | 556 | c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
03751e79 | 557 | MIPS_CPU_LLSC; |
1da177e4 LT |
558 | /* |
559 | * Bit 29 in the info register of the RM9000 | |
560 | * indicates if the TLB has 48 or 64 entries. | |
561 | * | |
70342287 RB |
562 | * 29 1 => 64 entry JTLB |
563 | * 0 => 48 entry JTLB | |
1da177e4 LT |
564 | */ |
565 | c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48; | |
566 | break; | |
567 | case PRID_IMP_R8000: | |
568 | c->cputype = CPU_R8000; | |
cea7e2df | 569 | __cpu_name[cpu] = "RM8000"; |
a96102be | 570 | set_isa(c, MIPS_CPU_ISA_IV); |
1da177e4 | 571 | c->options = MIPS_CPU_TLB | MIPS_CPU_4KEX | |
03751e79 SH |
572 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
573 | MIPS_CPU_LLSC; | |
1da177e4 LT |
574 | c->tlbsize = 384; /* has weird TLB: 3-way x 128 */ |
575 | break; | |
576 | case PRID_IMP_R10000: | |
577 | c->cputype = CPU_R10000; | |
cea7e2df | 578 | __cpu_name[cpu] = "R10000"; |
a96102be | 579 | set_isa(c, MIPS_CPU_ISA_IV); |
8b36612a | 580 | c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | |
03751e79 | 581 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
1da177e4 | 582 | MIPS_CPU_COUNTER | MIPS_CPU_WATCH | |
03751e79 | 583 | MIPS_CPU_LLSC; |
1da177e4 LT |
584 | c->tlbsize = 64; |
585 | break; | |
586 | case PRID_IMP_R12000: | |
587 | c->cputype = CPU_R12000; | |
cea7e2df | 588 | __cpu_name[cpu] = "R12000"; |
a96102be | 589 | set_isa(c, MIPS_CPU_ISA_IV); |
8b36612a | 590 | c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | |
03751e79 | 591 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
1da177e4 | 592 | MIPS_CPU_COUNTER | MIPS_CPU_WATCH | |
03751e79 | 593 | MIPS_CPU_LLSC; |
1da177e4 LT |
594 | c->tlbsize = 64; |
595 | break; | |
44d921b2 K |
596 | case PRID_IMP_R14000: |
597 | c->cputype = CPU_R14000; | |
cea7e2df | 598 | __cpu_name[cpu] = "R14000"; |
a96102be | 599 | set_isa(c, MIPS_CPU_ISA_IV); |
44d921b2 | 600 | c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | |
03751e79 | 601 | MIPS_CPU_FPU | MIPS_CPU_32FPR | |
44d921b2 | 602 | MIPS_CPU_COUNTER | MIPS_CPU_WATCH | |
03751e79 | 603 | MIPS_CPU_LLSC; |
44d921b2 K |
604 | c->tlbsize = 64; |
605 | break; | |
2a21c730 FZ |
606 | case PRID_IMP_LOONGSON2: |
607 | c->cputype = CPU_LOONGSON2; | |
cea7e2df | 608 | __cpu_name[cpu] = "ICT Loongson-2"; |
5aac1e8a RM |
609 | |
610 | switch (c->processor_id & PRID_REV_MASK) { | |
611 | case PRID_REV_LOONGSON2E: | |
612 | set_elf_platform(cpu, "loongson2e"); | |
613 | break; | |
614 | case PRID_REV_LOONGSON2F: | |
615 | set_elf_platform(cpu, "loongson2f"); | |
616 | break; | |
617 | } | |
618 | ||
a96102be | 619 | set_isa(c, MIPS_CPU_ISA_III); |
2a21c730 FZ |
620 | c->options = R4K_OPTS | |
621 | MIPS_CPU_FPU | MIPS_CPU_LLSC | | |
622 | MIPS_CPU_32FPR; | |
623 | c->tlbsize = 64; | |
624 | break; | |
2fa36399 KC |
625 | case PRID_IMP_LOONGSON1: |
626 | decode_configs(c); | |
b4672d37 | 627 | |
2fa36399 | 628 | c->cputype = CPU_LOONGSON1; |
1da177e4 | 629 | |
2fa36399 KC |
630 | switch (c->processor_id & PRID_REV_MASK) { |
631 | case PRID_REV_LOONGSON1B: | |
632 | __cpu_name[cpu] = "Loongson 1B"; | |
b4672d37 | 633 | break; |
b4672d37 | 634 | } |
4194318c | 635 | |
2fa36399 | 636 | break; |
1da177e4 | 637 | } |
1da177e4 LT |
638 | } |
639 | ||
cea7e2df | 640 | static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu) |
1da177e4 | 641 | { |
4194318c | 642 | decode_configs(c); |
1da177e4 LT |
643 | switch (c->processor_id & 0xff00) { |
644 | case PRID_IMP_4KC: | |
645 | c->cputype = CPU_4KC; | |
cea7e2df | 646 | __cpu_name[cpu] = "MIPS 4Kc"; |
1da177e4 LT |
647 | break; |
648 | case PRID_IMP_4KEC: | |
2b07bd02 RB |
649 | case PRID_IMP_4KECR2: |
650 | c->cputype = CPU_4KEC; | |
cea7e2df | 651 | __cpu_name[cpu] = "MIPS 4KEc"; |
2b07bd02 | 652 | break; |
1da177e4 | 653 | case PRID_IMP_4KSC: |
8afcb5d8 | 654 | case PRID_IMP_4KSD: |
1da177e4 | 655 | c->cputype = CPU_4KSC; |
cea7e2df | 656 | __cpu_name[cpu] = "MIPS 4KSc"; |
1da177e4 LT |
657 | break; |
658 | case PRID_IMP_5KC: | |
659 | c->cputype = CPU_5KC; | |
cea7e2df | 660 | __cpu_name[cpu] = "MIPS 5Kc"; |
1da177e4 | 661 | break; |
78d4803f LY |
662 | case PRID_IMP_5KE: |
663 | c->cputype = CPU_5KE; | |
664 | __cpu_name[cpu] = "MIPS 5KE"; | |
665 | break; | |
1da177e4 LT |
666 | case PRID_IMP_20KC: |
667 | c->cputype = CPU_20KC; | |
cea7e2df | 668 | __cpu_name[cpu] = "MIPS 20Kc"; |
1da177e4 LT |
669 | break; |
670 | case PRID_IMP_24K: | |
671 | c->cputype = CPU_24K; | |
cea7e2df | 672 | __cpu_name[cpu] = "MIPS 24Kc"; |
1da177e4 | 673 | break; |
42f3caef JC |
674 | case PRID_IMP_24KE: |
675 | c->cputype = CPU_24K; | |
676 | __cpu_name[cpu] = "MIPS 24KEc"; | |
677 | break; | |
1da177e4 LT |
678 | case PRID_IMP_25KF: |
679 | c->cputype = CPU_25KF; | |
cea7e2df | 680 | __cpu_name[cpu] = "MIPS 25Kc"; |
1da177e4 | 681 | break; |
bbc7f22f RB |
682 | case PRID_IMP_34K: |
683 | c->cputype = CPU_34K; | |
cea7e2df | 684 | __cpu_name[cpu] = "MIPS 34Kc"; |
bbc7f22f | 685 | break; |
c620953c CD |
686 | case PRID_IMP_74K: |
687 | c->cputype = CPU_74K; | |
cea7e2df | 688 | __cpu_name[cpu] = "MIPS 74Kc"; |
c620953c | 689 | break; |
113c62d9 SH |
690 | case PRID_IMP_M14KC: |
691 | c->cputype = CPU_M14KC; | |
692 | __cpu_name[cpu] = "MIPS M14Kc"; | |
693 | break; | |
f8fa4811 SH |
694 | case PRID_IMP_M14KEC: |
695 | c->cputype = CPU_M14KEC; | |
696 | __cpu_name[cpu] = "MIPS M14KEc"; | |
697 | break; | |
39b8d525 RB |
698 | case PRID_IMP_1004K: |
699 | c->cputype = CPU_1004K; | |
cea7e2df | 700 | __cpu_name[cpu] = "MIPS 1004Kc"; |
39b8d525 | 701 | break; |
006a851b SH |
702 | case PRID_IMP_1074K: |
703 | c->cputype = CPU_74K; | |
704 | __cpu_name[cpu] = "MIPS 1074Kc"; | |
705 | break; | |
1da177e4 | 706 | } |
0b6d497f CD |
707 | |
708 | spram_config(); | |
1da177e4 LT |
709 | } |
710 | ||
cea7e2df | 711 | static inline void cpu_probe_alchemy(struct cpuinfo_mips *c, unsigned int cpu) |
1da177e4 | 712 | { |
4194318c | 713 | decode_configs(c); |
1da177e4 LT |
714 | switch (c->processor_id & 0xff00) { |
715 | case PRID_IMP_AU1_REV1: | |
716 | case PRID_IMP_AU1_REV2: | |
270717a8 | 717 | c->cputype = CPU_ALCHEMY; |
1da177e4 LT |
718 | switch ((c->processor_id >> 24) & 0xff) { |
719 | case 0: | |
cea7e2df | 720 | __cpu_name[cpu] = "Au1000"; |
1da177e4 LT |
721 | break; |
722 | case 1: | |
cea7e2df | 723 | __cpu_name[cpu] = "Au1500"; |
1da177e4 LT |
724 | break; |
725 | case 2: | |
cea7e2df | 726 | __cpu_name[cpu] = "Au1100"; |
1da177e4 LT |
727 | break; |
728 | case 3: | |
cea7e2df | 729 | __cpu_name[cpu] = "Au1550"; |
1da177e4 | 730 | break; |
e3ad1c23 | 731 | case 4: |
cea7e2df | 732 | __cpu_name[cpu] = "Au1200"; |
270717a8 | 733 | if ((c->processor_id & 0xff) == 2) |
cea7e2df | 734 | __cpu_name[cpu] = "Au1250"; |
237cfee1 ML |
735 | break; |
736 | case 5: | |
cea7e2df | 737 | __cpu_name[cpu] = "Au1210"; |
e3ad1c23 | 738 | break; |
1da177e4 | 739 | default: |
270717a8 | 740 | __cpu_name[cpu] = "Au1xxx"; |
1da177e4 LT |
741 | break; |
742 | } | |
1da177e4 LT |
743 | break; |
744 | } | |
745 | } | |
746 | ||
cea7e2df | 747 | static inline void cpu_probe_sibyte(struct cpuinfo_mips *c, unsigned int cpu) |
1da177e4 | 748 | { |
4194318c | 749 | decode_configs(c); |
02cf2119 | 750 | |
1da177e4 LT |
751 | switch (c->processor_id & 0xff00) { |
752 | case PRID_IMP_SB1: | |
753 | c->cputype = CPU_SB1; | |
cea7e2df | 754 | __cpu_name[cpu] = "SiByte SB1"; |
1da177e4 | 755 | /* FPU in pass1 is known to have issues. */ |
aa32374a | 756 | if ((c->processor_id & 0xff) < 0x02) |
010b853b | 757 | c->options &= ~(MIPS_CPU_FPU | MIPS_CPU_32FPR); |
1da177e4 | 758 | break; |
93ce2f52 AI |
759 | case PRID_IMP_SB1A: |
760 | c->cputype = CPU_SB1A; | |
cea7e2df | 761 | __cpu_name[cpu] = "SiByte SB1A"; |
93ce2f52 | 762 | break; |
1da177e4 LT |
763 | } |
764 | } | |
765 | ||
cea7e2df | 766 | static inline void cpu_probe_sandcraft(struct cpuinfo_mips *c, unsigned int cpu) |
1da177e4 | 767 | { |
4194318c | 768 | decode_configs(c); |
1da177e4 LT |
769 | switch (c->processor_id & 0xff00) { |
770 | case PRID_IMP_SR71000: | |
771 | c->cputype = CPU_SR71000; | |
cea7e2df | 772 | __cpu_name[cpu] = "Sandcraft SR71000"; |
1da177e4 LT |
773 | c->scache.ways = 8; |
774 | c->tlbsize = 64; | |
775 | break; | |
776 | } | |
777 | } | |
778 | ||
cea7e2df | 779 | static inline void cpu_probe_nxp(struct cpuinfo_mips *c, unsigned int cpu) |
bdf21b18 PP |
780 | { |
781 | decode_configs(c); | |
782 | switch (c->processor_id & 0xff00) { | |
783 | case PRID_IMP_PR4450: | |
784 | c->cputype = CPU_PR4450; | |
cea7e2df | 785 | __cpu_name[cpu] = "Philips PR4450"; |
a96102be | 786 | set_isa(c, MIPS_CPU_ISA_M32R1); |
bdf21b18 | 787 | break; |
bdf21b18 PP |
788 | } |
789 | } | |
790 | ||
cea7e2df | 791 | static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu) |
1c0c13eb AJ |
792 | { |
793 | decode_configs(c); | |
794 | switch (c->processor_id & 0xff00) { | |
190fca3e KC |
795 | case PRID_IMP_BMIPS32_REV4: |
796 | case PRID_IMP_BMIPS32_REV8: | |
602977b0 KC |
797 | c->cputype = CPU_BMIPS32; |
798 | __cpu_name[cpu] = "Broadcom BMIPS32"; | |
06785df0 | 799 | set_elf_platform(cpu, "bmips32"); |
602977b0 KC |
800 | break; |
801 | case PRID_IMP_BMIPS3300: | |
802 | case PRID_IMP_BMIPS3300_ALT: | |
803 | case PRID_IMP_BMIPS3300_BUG: | |
804 | c->cputype = CPU_BMIPS3300; | |
805 | __cpu_name[cpu] = "Broadcom BMIPS3300"; | |
06785df0 | 806 | set_elf_platform(cpu, "bmips3300"); |
602977b0 KC |
807 | break; |
808 | case PRID_IMP_BMIPS43XX: { | |
809 | int rev = c->processor_id & 0xff; | |
810 | ||
811 | if (rev >= PRID_REV_BMIPS4380_LO && | |
812 | rev <= PRID_REV_BMIPS4380_HI) { | |
813 | c->cputype = CPU_BMIPS4380; | |
814 | __cpu_name[cpu] = "Broadcom BMIPS4380"; | |
06785df0 | 815 | set_elf_platform(cpu, "bmips4380"); |
602977b0 KC |
816 | } else { |
817 | c->cputype = CPU_BMIPS4350; | |
818 | __cpu_name[cpu] = "Broadcom BMIPS4350"; | |
06785df0 | 819 | set_elf_platform(cpu, "bmips4350"); |
602977b0 | 820 | } |
0de663ef | 821 | break; |
602977b0 KC |
822 | } |
823 | case PRID_IMP_BMIPS5000: | |
824 | c->cputype = CPU_BMIPS5000; | |
825 | __cpu_name[cpu] = "Broadcom BMIPS5000"; | |
06785df0 | 826 | set_elf_platform(cpu, "bmips5000"); |
602977b0 | 827 | c->options |= MIPS_CPU_ULRI; |
0de663ef | 828 | break; |
1c0c13eb AJ |
829 | } |
830 | } | |
831 | ||
0dd4781b DD |
832 | static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu) |
833 | { | |
834 | decode_configs(c); | |
835 | switch (c->processor_id & 0xff00) { | |
836 | case PRID_IMP_CAVIUM_CN38XX: | |
837 | case PRID_IMP_CAVIUM_CN31XX: | |
838 | case PRID_IMP_CAVIUM_CN30XX: | |
6f329468 DD |
839 | c->cputype = CPU_CAVIUM_OCTEON; |
840 | __cpu_name[cpu] = "Cavium Octeon"; | |
841 | goto platform; | |
0dd4781b DD |
842 | case PRID_IMP_CAVIUM_CN58XX: |
843 | case PRID_IMP_CAVIUM_CN56XX: | |
844 | case PRID_IMP_CAVIUM_CN50XX: | |
845 | case PRID_IMP_CAVIUM_CN52XX: | |
6f329468 DD |
846 | c->cputype = CPU_CAVIUM_OCTEON_PLUS; |
847 | __cpu_name[cpu] = "Cavium Octeon+"; | |
848 | platform: | |
c094c99e | 849 | set_elf_platform(cpu, "octeon"); |
0dd4781b | 850 | break; |
a1431b61 | 851 | case PRID_IMP_CAVIUM_CN61XX: |
0e56b385 | 852 | case PRID_IMP_CAVIUM_CN63XX: |
a1431b61 DD |
853 | case PRID_IMP_CAVIUM_CN66XX: |
854 | case PRID_IMP_CAVIUM_CN68XX: | |
0e56b385 DD |
855 | c->cputype = CPU_CAVIUM_OCTEON2; |
856 | __cpu_name[cpu] = "Cavium Octeon II"; | |
c094c99e | 857 | set_elf_platform(cpu, "octeon2"); |
0e56b385 | 858 | break; |
0dd4781b DD |
859 | default: |
860 | printk(KERN_INFO "Unknown Octeon chip!\n"); | |
861 | c->cputype = CPU_UNKNOWN; | |
862 | break; | |
863 | } | |
864 | } | |
865 | ||
83ccf69d LPC |
866 | static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu) |
867 | { | |
868 | decode_configs(c); | |
869 | /* JZRISC does not implement the CP0 counter. */ | |
870 | c->options &= ~MIPS_CPU_COUNTER; | |
871 | switch (c->processor_id & 0xff00) { | |
872 | case PRID_IMP_JZRISC: | |
873 | c->cputype = CPU_JZRISC; | |
874 | __cpu_name[cpu] = "Ingenic JZRISC"; | |
875 | break; | |
876 | default: | |
877 | panic("Unknown Ingenic Processor ID!"); | |
878 | break; | |
879 | } | |
880 | } | |
881 | ||
a7117c6b J |
882 | static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu) |
883 | { | |
884 | decode_configs(c); | |
885 | ||
809f36c6 ML |
886 | if ((c->processor_id & 0xff00) == PRID_IMP_NETLOGIC_AU13XX) { |
887 | c->cputype = CPU_ALCHEMY; | |
888 | __cpu_name[cpu] = "Au1300"; | |
889 | /* following stuff is not for Alchemy */ | |
890 | return; | |
891 | } | |
892 | ||
70342287 RB |
893 | c->options = (MIPS_CPU_TLB | |
894 | MIPS_CPU_4KEX | | |
a7117c6b | 895 | MIPS_CPU_COUNTER | |
70342287 RB |
896 | MIPS_CPU_DIVEC | |
897 | MIPS_CPU_WATCH | | |
898 | MIPS_CPU_EJTAG | | |
a7117c6b J |
899 | MIPS_CPU_LLSC); |
900 | ||
901 | switch (c->processor_id & 0xff00) { | |
2aa54b20 J |
902 | case PRID_IMP_NETLOGIC_XLP8XX: |
903 | case PRID_IMP_NETLOGIC_XLP3XX: | |
a3d4fb2d J |
904 | c->cputype = CPU_XLP; |
905 | __cpu_name[cpu] = "Netlogic XLP"; | |
906 | break; | |
907 | ||
a7117c6b J |
908 | case PRID_IMP_NETLOGIC_XLR732: |
909 | case PRID_IMP_NETLOGIC_XLR716: | |
910 | case PRID_IMP_NETLOGIC_XLR532: | |
911 | case PRID_IMP_NETLOGIC_XLR308: | |
912 | case PRID_IMP_NETLOGIC_XLR532C: | |
913 | case PRID_IMP_NETLOGIC_XLR516C: | |
914 | case PRID_IMP_NETLOGIC_XLR508C: | |
915 | case PRID_IMP_NETLOGIC_XLR308C: | |
916 | c->cputype = CPU_XLR; | |
917 | __cpu_name[cpu] = "Netlogic XLR"; | |
918 | break; | |
919 | ||
920 | case PRID_IMP_NETLOGIC_XLS608: | |
921 | case PRID_IMP_NETLOGIC_XLS408: | |
922 | case PRID_IMP_NETLOGIC_XLS404: | |
923 | case PRID_IMP_NETLOGIC_XLS208: | |
924 | case PRID_IMP_NETLOGIC_XLS204: | |
925 | case PRID_IMP_NETLOGIC_XLS108: | |
926 | case PRID_IMP_NETLOGIC_XLS104: | |
927 | case PRID_IMP_NETLOGIC_XLS616B: | |
928 | case PRID_IMP_NETLOGIC_XLS608B: | |
929 | case PRID_IMP_NETLOGIC_XLS416B: | |
930 | case PRID_IMP_NETLOGIC_XLS412B: | |
931 | case PRID_IMP_NETLOGIC_XLS408B: | |
932 | case PRID_IMP_NETLOGIC_XLS404B: | |
933 | c->cputype = CPU_XLR; | |
934 | __cpu_name[cpu] = "Netlogic XLS"; | |
935 | break; | |
936 | ||
937 | default: | |
a3d4fb2d | 938 | pr_info("Unknown Netlogic chip id [%02x]!\n", |
a7117c6b J |
939 | c->processor_id); |
940 | c->cputype = CPU_XLR; | |
941 | break; | |
942 | } | |
943 | ||
a3d4fb2d | 944 | if (c->cputype == CPU_XLP) { |
a96102be | 945 | set_isa(c, MIPS_CPU_ISA_M64R2); |
a3d4fb2d J |
946 | c->options |= (MIPS_CPU_FPU | MIPS_CPU_ULRI | MIPS_CPU_MCHECK); |
947 | /* This will be updated again after all threads are woken up */ | |
948 | c->tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1; | |
949 | } else { | |
a96102be | 950 | set_isa(c, MIPS_CPU_ISA_M64R1); |
a3d4fb2d J |
951 | c->tlbsize = ((read_c0_config1() >> 25) & 0x3f) + 1; |
952 | } | |
7777b939 | 953 | c->kscratch_mask = 0xf; |
a7117c6b J |
954 | } |
955 | ||
949e51be DD |
956 | #ifdef CONFIG_64BIT |
957 | /* For use by uaccess.h */ | |
958 | u64 __ua_limit; | |
959 | EXPORT_SYMBOL(__ua_limit); | |
960 | #endif | |
961 | ||
9966db25 | 962 | const char *__cpu_name[NR_CPUS]; |
874fd3b5 | 963 | const char *__elf_platform; |
9966db25 | 964 | |
078a55fc | 965 | void cpu_probe(void) |
1da177e4 LT |
966 | { |
967 | struct cpuinfo_mips *c = ¤t_cpu_data; | |
9966db25 | 968 | unsigned int cpu = smp_processor_id(); |
1da177e4 | 969 | |
70342287 | 970 | c->processor_id = PRID_IMP_UNKNOWN; |
1da177e4 LT |
971 | c->fpu_id = FPIR_IMP_NONE; |
972 | c->cputype = CPU_UNKNOWN; | |
973 | ||
974 | c->processor_id = read_c0_prid(); | |
975 | switch (c->processor_id & 0xff0000) { | |
976 | case PRID_COMP_LEGACY: | |
cea7e2df | 977 | cpu_probe_legacy(c, cpu); |
1da177e4 LT |
978 | break; |
979 | case PRID_COMP_MIPS: | |
cea7e2df | 980 | cpu_probe_mips(c, cpu); |
1da177e4 LT |
981 | break; |
982 | case PRID_COMP_ALCHEMY: | |
cea7e2df | 983 | cpu_probe_alchemy(c, cpu); |
1da177e4 LT |
984 | break; |
985 | case PRID_COMP_SIBYTE: | |
cea7e2df | 986 | cpu_probe_sibyte(c, cpu); |
1da177e4 | 987 | break; |
1c0c13eb | 988 | case PRID_COMP_BROADCOM: |
cea7e2df | 989 | cpu_probe_broadcom(c, cpu); |
1c0c13eb | 990 | break; |
1da177e4 | 991 | case PRID_COMP_SANDCRAFT: |
cea7e2df | 992 | cpu_probe_sandcraft(c, cpu); |
1da177e4 | 993 | break; |
a92b0588 | 994 | case PRID_COMP_NXP: |
cea7e2df | 995 | cpu_probe_nxp(c, cpu); |
a3dddd56 | 996 | break; |
0dd4781b DD |
997 | case PRID_COMP_CAVIUM: |
998 | cpu_probe_cavium(c, cpu); | |
999 | break; | |
83ccf69d LPC |
1000 | case PRID_COMP_INGENIC: |
1001 | cpu_probe_ingenic(c, cpu); | |
1002 | break; | |
a7117c6b J |
1003 | case PRID_COMP_NETLOGIC: |
1004 | cpu_probe_netlogic(c, cpu); | |
1005 | break; | |
1da177e4 | 1006 | } |
dec8b1ca | 1007 | |
cea7e2df RB |
1008 | BUG_ON(!__cpu_name[cpu]); |
1009 | BUG_ON(c->cputype == CPU_UNKNOWN); | |
1010 | ||
dec8b1ca FBH |
1011 | /* |
1012 | * Platform code can force the cpu type to optimize code | |
1013 | * generation. In that case be sure the cpu type is correctly | |
1014 | * manually setup otherwise it could trigger some nasty bugs. | |
1015 | */ | |
1016 | BUG_ON(current_cpu_type() != c->cputype); | |
1017 | ||
0103d23f KC |
1018 | if (mips_fpu_disabled) |
1019 | c->options &= ~MIPS_CPU_FPU; | |
1020 | ||
1021 | if (mips_dsp_disabled) | |
ee80f7c7 | 1022 | c->ases &= ~(MIPS_ASE_DSP | MIPS_ASE_DSP2P); |
0103d23f | 1023 | |
4194318c | 1024 | if (c->options & MIPS_CPU_FPU) { |
1da177e4 | 1025 | c->fpu_id = cpu_get_fpu_id(); |
4194318c | 1026 | |
adb37892 DZ |
1027 | if (c->isa_level & (MIPS_CPU_ISA_M32R1 | MIPS_CPU_ISA_M32R2 | |
1028 | MIPS_CPU_ISA_M64R1 | MIPS_CPU_ISA_M64R2)) { | |
4194318c RB |
1029 | if (c->fpu_id & MIPS_FPIR_3D) |
1030 | c->ases |= MIPS_ASE_MIPS3D; | |
1031 | } | |
1032 | } | |
9966db25 | 1033 | |
da4b62cd | 1034 | if (cpu_has_mips_r2) { |
f6771dbb | 1035 | c->srsets = ((read_c0_srsctl() >> 26) & 0x0f) + 1; |
da4b62cd AC |
1036 | /* R2 has Performance Counter Interrupt indicator */ |
1037 | c->options |= MIPS_CPU_PCI; | |
1038 | } | |
f6771dbb RB |
1039 | else |
1040 | c->srsets = 1; | |
91dfc423 GR |
1041 | |
1042 | cpu_probe_vmbits(c); | |
949e51be DD |
1043 | |
1044 | #ifdef CONFIG_64BIT | |
1045 | if (cpu == 0) | |
1046 | __ua_limit = ~((1ull << cpu_vmbits) - 1); | |
1047 | #endif | |
1da177e4 LT |
1048 | } |
1049 | ||
078a55fc | 1050 | void cpu_report(void) |
1da177e4 LT |
1051 | { |
1052 | struct cpuinfo_mips *c = ¤t_cpu_data; | |
1053 | ||
9966db25 RB |
1054 | printk(KERN_INFO "CPU revision is: %08x (%s)\n", |
1055 | c->processor_id, cpu_name_string()); | |
1da177e4 | 1056 | if (c->options & MIPS_CPU_FPU) |
9966db25 | 1057 | printk(KERN_INFO "FPU revision is: %08x\n", c->fpu_id); |
1da177e4 | 1058 | } |