From fbeda19f82aa07082d2e1607a9f5114141dae2ac Mon Sep 17 00:00:00 2001 From: David Daney Date: Wed, 13 May 2009 15:59:55 -0700 Subject: [PATCH] MIPS: Allow CPU specific overriding of CP0 hwrena impl bits. Some CPUs have implementation dependent rdhwr registers. Allow them to be enabled on a per CPU basis. Signed-off-by: David Daney Signed-off-by: Ralf Baechle --- arch/mips/include/asm/cpu-features.h | 4 ++++ arch/mips/kernel/traps.c | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index 1cba4b2ffd1..8ab1d12ba7f 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -234,4 +234,8 @@ #define cpu_scache_line_size() cpu_data[0].scache.linesz #endif +#ifndef cpu_hwrena_impl_bits +#define cpu_hwrena_impl_bits 0 +#endif + #endif /* __ASM_CPU_FEATURES_H */ diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index e83da174b53..f54871797ab 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -1502,7 +1502,7 @@ void __cpuinit per_cpu_trap_init(void) status_set); if (cpu_has_mips_r2) { - unsigned int enable = 0x0000000f; + unsigned int enable = 0x0000000f | cpu_hwrena_impl_bits; if (!noulri && cpu_has_userlocal) enable |= (1 << 29); -- 2.20.1