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| author | Ralf Baechle <ralf@linux-mips.org> | 2005-12-08 14:04:24 +0000 |
|---|---|---|
| committer | <ralf@denk.linux-mips.net> | 2006-01-10 13:39:06 +0000 |
| commit | b4672d37293cb045ec4d57e8b76a62810c96da71 (patch) | |
| tree | 21ba827850d7bc7c36d7009575b979d12b35227c /arch/mips/kernel/cpu-probe.c | |
| parent | e7958bb90d57f0da073cbd031a1808de51d1de15 (diff) | |
| download | lwn-b4672d37293cb045ec4d57e8b76a62810c96da71.tar.gz lwn-b4672d37293cb045ec4d57e8b76a62810c96da71.zip | |
MIPS: Introduce machinery for testing for MIPSxxR1/2.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index d00f8768e2a0..fac48ad27b34 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -435,6 +435,9 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c) } } +static char unknown_isa[] __initdata = KERN_ERR \ + "Unsupported ISA type, c0.config0: %d."; + static inline unsigned int decode_config0(struct cpuinfo_mips *c) { unsigned int config0; @@ -447,16 +450,37 @@ static inline unsigned int decode_config0(struct cpuinfo_mips *c) isa = (config0 & MIPS_CONF_AT) >> 13; switch (isa) { case 0: - c->isa_level = MIPS_CPU_ISA_M32R1; + switch ((config0 >> 10) & 7) { + case 0: + c->isa_level = MIPS_CPU_ISA_M32R1; + break; + case 1: + c->isa_level = MIPS_CPU_ISA_M32R2; + break; + default: + goto unknown; + } break; case 2: - c->isa_level = MIPS_CPU_ISA_M64R1; + switch ((config0 >> 10) & 7) { + case 0: + c->isa_level = MIPS_CPU_ISA_M64R1; + break; + case 1: + c->isa_level = MIPS_CPU_ISA_M64R2; + break; + default: + goto unknown; + } break; default: - panic("Unsupported ISA type, cp0.config0.at: %d.", isa); + goto unknown; } return config0 & MIPS_CONF_M; + +unknown: + panic(unknown_isa, config0); } static inline unsigned int decode_config1(struct cpuinfo_mips *c) @@ -568,7 +592,6 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c) break; case PRID_IMP_34K: c->cputype = CPU_34K; - c->isa_level = MIPS_CPU_ISA_M32R1; break; } } @@ -691,7 +714,9 @@ __init void cpu_probe(void) c->fpu_id = cpu_get_fpu_id(); if (c->isa_level == MIPS_CPU_ISA_M32R1 || - c->isa_level == MIPS_CPU_ISA_M64R1) { + c->isa_level == MIPS_CPU_ISA_M32R2 || + c->isa_level == MIPS_CPU_ISA_M64R1 || + c->isa_level == MIPS_CPU_ISA_M64R2) { if (c->fpu_id & MIPS_FPIR_3D) c->ases |= MIPS_ASE_MIPS3D; } |