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authorRalf 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
commitb4672d37293cb045ec4d57e8b76a62810c96da71 (patch)
tree21ba827850d7bc7c36d7009575b979d12b35227c /arch/mips/kernel/cpu-probe.c
parente7958bb90d57f0da073cbd031a1808de51d1de15 (diff)
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.c35
1 files changed, 30 insertions, 5 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index d00f8768e2a..fac48ad27b3 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;
}