diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-09-20 20:24:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-20 20:25:03 +0200 |
| commit | bfefb7a0c6e08736f2d5917c468467f134bf28bb (patch) | |
| tree | 7aa7084114dc083fe5b4d7b532901bdeb67188e7 /arch/sh/kernel/cpu/init.c | |
| parent | 8d0cc631f6dd0a9283ceb7d61d8b85ecbcd355ea (diff) | |
| parent | 78f28b7c555359c67c2a0d23f7436e915329421e (diff) | |
Merge branch 'linus' into x86/urgent
Merge reason: Bring in changes that the next patch will depend on.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sh/kernel/cpu/init.c')
| -rw-r--r-- | arch/sh/kernel/cpu/init.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c index ad85421099cd..e932ebef4738 100644 --- a/arch/sh/kernel/cpu/init.c +++ b/arch/sh/kernel/cpu/init.c @@ -3,7 +3,7 @@ * * CPU init code * - * Copyright (C) 2002 - 2007 Paul Mundt + * Copyright (C) 2002 - 2009 Paul Mundt * Copyright (C) 2003 Richard Curnow * * This file is subject to the terms and conditions of the GNU General Public @@ -62,6 +62,37 @@ static void __init speculative_execution_init(void) #define speculative_execution_init() do { } while (0) #endif +#ifdef CONFIG_CPU_SH4A +#define EXPMASK 0xff2f0004 +#define EXPMASK_RTEDS (1 << 0) +#define EXPMASK_BRDSSLP (1 << 1) +#define EXPMASK_MMCAW (1 << 4) + +static void __init expmask_init(void) +{ + unsigned long expmask = __raw_readl(EXPMASK); + + /* + * Future proofing. + * + * Disable support for slottable sleep instruction + * and non-nop instructions in the rte delay slot. + */ + expmask &= ~(EXPMASK_RTEDS | EXPMASK_BRDSSLP); + + /* + * Enable associative writes to the memory-mapped cache array + * until the cache flush ops have been rewritten. + */ + expmask |= EXPMASK_MMCAW; + + __raw_writel(expmask, EXPMASK); + ctrl_barrier(); +} +#else +#define expmask_init() do { } while (0) +#endif + /* 2nd-level cache init */ void __uses_jump_to_uncached __attribute__ ((weak)) l2_cache_init(void) { @@ -268,11 +299,9 @@ asmlinkage void __init sh_cpu_init(void) cache_init(); if (raw_smp_processor_id() == 0) { -#ifdef CONFIG_MMU shm_align_mask = max_t(unsigned long, current_cpu_data.dcache.way_size - 1, PAGE_SIZE - 1); -#endif /* Boot CPU sets the cache shape */ detect_cache_shape(); @@ -321,4 +350,5 @@ asmlinkage void __init sh_cpu_init(void) #endif speculative_execution_init(); + expmask_init(); } |