diff options
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 5465dc183e5..c814287bdf5 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -376,13 +376,33 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu) __cpu_name[cpu] = "R4000PC"; } } else { + int cca = read_c0_config() & CONF_CM_CMASK; + int mc; + + /* + * SC and MC versions can't be reliably told apart, + * but only the latter support coherent caching + * modes so assume the firmware has set the KSEG0 + * coherency attribute reasonably (if uncached, we + * assume SC). + */ + switch (cca) { + case CONF_CM_CACHABLE_CE: + case CONF_CM_CACHABLE_COW: + case CONF_CM_CACHABLE_CUW: + mc = 1; + break; + default: + mc = 0; + break; + } if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_R4400) { - c->cputype = CPU_R4400SC; - __cpu_name[cpu] = "R4400SC"; + c->cputype = mc ? CPU_R4400MC : CPU_R4400SC; + __cpu_name[cpu] = mc ? "R4400MC" : "R4400SC"; } else { - c->cputype = CPU_R4000SC; - __cpu_name[cpu] = "R4000SC"; + c->cputype = mc ? CPU_R4000MC : CPU_R4000SC; + __cpu_name[cpu] = mc ? "R4000MC" : "R4000SC"; } } @@ -1079,8 +1099,8 @@ void cpu_report(void) { struct cpuinfo_mips *c = ¤t_cpu_data; - printk(KERN_INFO "CPU revision is: %08x (%s)\n", - c->processor_id, cpu_name_string()); + pr_info("CPU%d revision is: %08x (%s)\n", + smp_processor_id(), c->processor_id, cpu_name_string()); if (c->options & MIPS_CPU_FPU) printk(KERN_INFO "FPU revision is: %08x\n", c->fpu_id); } |