diff options
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 129 |
1 files changed, 119 insertions, 10 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 3e004161ebd5..c8c47a2d1972 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -159,6 +159,7 @@ static inline void check_wait(void) case CPU_5KC: case CPU_25KF: case CPU_PR4450: + case CPU_BCM3302: cpu_wait = r4k_wait; break; @@ -745,14 +746,6 @@ static inline void cpu_probe_sibyte(struct cpuinfo_mips *c) { decode_configs(c); - /* - * For historical reasons the SB1 comes with it's own variant of - * cache code which eventually will be folded into c-r4k.c. Until - * then we pretend it's got it's own cache architecture. - */ - c->options &= ~MIPS_CPU_4K_CACHE; - c->options |= MIPS_CPU_SB1_CACHE; - switch (c->processor_id & 0xff00) { case PRID_IMP_SB1: c->cputype = CPU_SB1; @@ -793,9 +786,111 @@ static inline void cpu_probe_philips(struct cpuinfo_mips *c) } +static inline void cpu_probe_broadcom(struct cpuinfo_mips *c) +{ + decode_configs(c); + switch (c->processor_id & 0xff00) { + case PRID_IMP_BCM3302: + c->cputype = CPU_BCM3302; + break; + case PRID_IMP_BCM4710: + c->cputype = CPU_BCM4710; + break; + default: + c->cputype = CPU_UNKNOWN; + break; + } +} + +const char *__cpu_name[NR_CPUS]; + +/* + * Name a CPU + */ +static __init const char *cpu_to_name(struct cpuinfo_mips *c) +{ + const char *name = NULL; + + switch (c->cputype) { + case CPU_UNKNOWN: name = "unknown"; break; + case CPU_R2000: name = "R2000"; break; + case CPU_R3000: name = "R3000"; break; + case CPU_R3000A: name = "R3000A"; break; + case CPU_R3041: name = "R3041"; break; + case CPU_R3051: name = "R3051"; break; + case CPU_R3052: name = "R3052"; break; + case CPU_R3081: name = "R3081"; break; + case CPU_R3081E: name = "R3081E"; break; + case CPU_R4000PC: name = "R4000PC"; break; + case CPU_R4000SC: name = "R4000SC"; break; + case CPU_R4000MC: name = "R4000MC"; break; + case CPU_R4200: name = "R4200"; break; + case CPU_R4400PC: name = "R4400PC"; break; + case CPU_R4400SC: name = "R4400SC"; break; + case CPU_R4400MC: name = "R4400MC"; break; + case CPU_R4600: name = "R4600"; break; + case CPU_R6000: name = "R6000"; break; + case CPU_R6000A: name = "R6000A"; break; + case CPU_R8000: name = "R8000"; break; + case CPU_R10000: name = "R10000"; break; + case CPU_R12000: name = "R12000"; break; + case CPU_R14000: name = "R14000"; break; + case CPU_R4300: name = "R4300"; break; + case CPU_R4650: name = "R4650"; break; + case CPU_R4700: name = "R4700"; break; + case CPU_R5000: name = "R5000"; break; + case CPU_R5000A: name = "R5000A"; break; + case CPU_R4640: name = "R4640"; break; + case CPU_NEVADA: name = "Nevada"; break; + case CPU_RM7000: name = "RM7000"; break; + case CPU_RM9000: name = "RM9000"; break; + case CPU_R5432: name = "R5432"; break; + case CPU_4KC: name = "MIPS 4Kc"; break; + case CPU_5KC: name = "MIPS 5Kc"; break; + case CPU_R4310: name = "R4310"; break; + case CPU_SB1: name = "SiByte SB1"; break; + case CPU_SB1A: name = "SiByte SB1A"; break; + case CPU_TX3912: name = "TX3912"; break; + case CPU_TX3922: name = "TX3922"; break; + case CPU_TX3927: name = "TX3927"; break; + case CPU_AU1000: name = "Au1000"; break; + case CPU_AU1500: name = "Au1500"; break; + case CPU_AU1100: name = "Au1100"; break; + case CPU_AU1550: name = "Au1550"; break; + case CPU_AU1200: name = "Au1200"; break; + case CPU_4KEC: name = "MIPS 4KEc"; break; + case CPU_4KSC: name = "MIPS 4KSc"; break; + case CPU_VR41XX: name = "NEC Vr41xx"; break; + case CPU_R5500: name = "R5500"; break; + case CPU_TX49XX: name = "TX49xx"; break; + case CPU_20KC: name = "MIPS 20Kc"; break; + case CPU_24K: name = "MIPS 24K"; break; + case CPU_25KF: name = "MIPS 25Kf"; break; + case CPU_34K: name = "MIPS 34K"; break; + case CPU_74K: name = "MIPS 74K"; break; + case CPU_VR4111: name = "NEC VR4111"; break; + case CPU_VR4121: name = "NEC VR4121"; break; + case CPU_VR4122: name = "NEC VR4122"; break; + case CPU_VR4131: name = "NEC VR4131"; break; + case CPU_VR4133: name = "NEC VR4133"; break; + case CPU_VR4181: name = "NEC VR4181"; break; + case CPU_VR4181A: name = "NEC VR4181A"; break; + case CPU_SR71000: name = "Sandcraft SR71000"; break; + case CPU_BCM3302: name = "Broadcom BCM3302"; break; + case CPU_BCM4710: name = "Broadcom BCM4710"; break; + case CPU_PR4450: name = "Philips PR4450"; break; + case CPU_LOONGSON2: name = "ICT Loongson-2"; break; + default: + BUG(); + } + + return name; +} + __init void cpu_probe(void) { struct cpuinfo_mips *c = ¤t_cpu_data; + unsigned int cpu = smp_processor_id(); c->processor_id = PRID_IMP_UNKNOWN; c->fpu_id = FPIR_IMP_NONE; @@ -815,6 +910,9 @@ __init void cpu_probe(void) case PRID_COMP_SIBYTE: cpu_probe_sibyte(c); break; + case PRID_COMP_BROADCOM: + cpu_probe_broadcom(c); + break; case PRID_COMP_SANDCRAFT: cpu_probe_sandcraft(c); break; @@ -824,6 +922,14 @@ __init void cpu_probe(void) default: c->cputype = CPU_UNKNOWN; } + + /* + * Platform code can force the cpu type to optimize code + * generation. In that case be sure the cpu type is correctly + * manually setup otherwise it could trigger some nasty bugs. + */ + BUG_ON(current_cpu_type() != c->cputype); + if (c->options & MIPS_CPU_FPU) { c->fpu_id = cpu_get_fpu_id(); @@ -835,13 +941,16 @@ __init void cpu_probe(void) c->ases |= MIPS_ASE_MIPS3D; } } + + __cpu_name[cpu] = cpu_to_name(c); } __init void cpu_report(void) { struct cpuinfo_mips *c = ¤t_cpu_data; - printk("CPU revision is: %08x\n", c->processor_id); + printk(KERN_INFO "CPU revision is: %08x (%s)\n", + c->processor_id, cpu_name_string()); if (c->options & MIPS_CPU_FPU) - printk("FPU revision is: %08x\n", c->fpu_id); + printk(KERN_INFO "FPU revision is: %08x\n", c->fpu_id); } |