diff options
| author | Huacai Chen <chenhc@lemote.com> | 2014-11-04 07:13:23 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-19 18:22:07 +0100 |
| commit | 7352c8b13dd9a848b0c5d6209d62761afb164dcb (patch) | |
| tree | 307be3b53c379ccbcf63815f4f0701735dbac33b /arch/mips/kernel/cpu-probe.c | |
| parent | MIPS: Loongson: Fix the write-combine CCA value setting (diff) | |
| download | linux-7352c8b13dd9a848b0c5d6209d62761afb164dcb.tar.xz linux-7352c8b13dd9a848b0c5d6209d62761afb164dcb.zip | |
MIPS: Loongson: Set Loongson-3's ISA level to MIPS64R1
In CPU manual Loongson-3 is MIPS64R2 compatible, but during tests we
found that its EI/DI instructions have problems. So we just set the ISA
level to MIPS64R1.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/8320/
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 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 08dc945f7608..d5a4f380b019 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -757,26 +757,29 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu) c->cputype = CPU_LOONGSON2; __cpu_name[cpu] = "ICT Loongson-2"; set_elf_platform(cpu, "loongson2e"); + set_isa(c, MIPS_CPU_ISA_III); break; case PRID_REV_LOONGSON2F: c->cputype = CPU_LOONGSON2; __cpu_name[cpu] = "ICT Loongson-2"; set_elf_platform(cpu, "loongson2f"); + set_isa(c, MIPS_CPU_ISA_III); break; case PRID_REV_LOONGSON3A: c->cputype = CPU_LOONGSON3; __cpu_name[cpu] = "ICT Loongson-3"; set_elf_platform(cpu, "loongson3a"); + set_isa(c, MIPS_CPU_ISA_M64R1); break; case PRID_REV_LOONGSON3B_R1: case PRID_REV_LOONGSON3B_R2: c->cputype = CPU_LOONGSON3; __cpu_name[cpu] = "ICT Loongson-3"; set_elf_platform(cpu, "loongson3b"); + set_isa(c, MIPS_CPU_ISA_M64R1); break; } - set_isa(c, MIPS_CPU_ISA_III); c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_LLSC | MIPS_CPU_32FPR; |