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Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
-rw-r--r--arch/mips/kernel/cpu-probe.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index cf3fd549e16d..d535fc706a8b 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -414,6 +414,14 @@ static int __init ftlb_disable(char *s)
__setup("noftlb", ftlb_disable);
+/*
+ * Check if the CPU has per tc perf counters
+ */
+static inline void cpu_set_mt_per_tc_perf(struct cpuinfo_mips *c)
+{
+ if (read_c0_config7() & MTI_CONF7_PTC)
+ c->options |= MIPS_CPU_MT_PER_TC_PERF_COUNTERS;
+}
static inline void check_errata(void)
{
@@ -848,6 +856,9 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c)
if (config5 & MIPS_CONF5_CA2)
c->ases |= MIPS_ASE_MIPS16E2;
+ if (config5 & MIPS_CONF5_CRCP)
+ elf_hwcap |= HWCAP_MIPS_CRC32;
+
return config5 & MIPS_CONF_M;
}
@@ -1569,6 +1580,7 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
c->cputype = CPU_34K;
c->writecombine = _CACHE_UNCACHED;
__cpu_name[cpu] = "MIPS 34Kc";
+ cpu_set_mt_per_tc_perf(c);
break;
case PRID_IMP_74K:
c->cputype = CPU_74K;
@@ -1589,6 +1601,7 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
c->cputype = CPU_1004K;
c->writecombine = _CACHE_UNCACHED;
__cpu_name[cpu] = "MIPS 1004Kc";
+ cpu_set_mt_per_tc_perf(c);
break;
case PRID_IMP_1074K:
c->cputype = CPU_1074K;
@@ -1598,10 +1611,12 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
case PRID_IMP_INTERAPTIV_UP:
c->cputype = CPU_INTERAPTIV;
__cpu_name[cpu] = "MIPS interAptiv";
+ cpu_set_mt_per_tc_perf(c);
break;
case PRID_IMP_INTERAPTIV_MP:
c->cputype = CPU_INTERAPTIV;
__cpu_name[cpu] = "MIPS interAptiv (multi)";
+ cpu_set_mt_per_tc_perf(c);
break;
case PRID_IMP_PROAPTIV_UP:
c->cputype = CPU_PROAPTIV;
@@ -1834,7 +1849,8 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
set_elf_platform(cpu, "loongson3a");
set_isa(c, MIPS_CPU_ISA_M64R2);
break;
- case PRID_REV_LOONGSON3A_R3:
+ case PRID_REV_LOONGSON3A_R3_0:
+ case PRID_REV_LOONGSON3A_R3_1:
c->cputype = CPU_LOONGSON3;
__cpu_name[cpu] = "ICT Loongson-3";
set_elf_platform(cpu, "loongson3a");