diff options
Diffstat (limited to 'arch/sh/mm/cache.c')
| -rw-r--r-- | arch/sh/mm/cache.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c index 5e1091be9dc..a2dc7f9ecc5 100644 --- a/arch/sh/mm/cache.c +++ b/arch/sh/mm/cache.c @@ -265,6 +265,8 @@ static void __init emit_cache_params(void) void __init cpu_cache_init(void) { + unsigned int cache_disabled = !(__raw_readl(CCR) & CCR_CACHE_ENABLE); + compute_alias(&boot_cpu_data.icache); compute_alias(&boot_cpu_data.dcache); compute_alias(&boot_cpu_data.scache); @@ -273,6 +275,13 @@ void __init cpu_cache_init(void) __flush_purge_region = noop__flush_region; __flush_invalidate_region = noop__flush_region; + /* + * No flushing is necessary in the disabled cache case so we can + * just keep the noop functions in local_flush_..() and __flush_..() + */ + if (unlikely(cache_disabled)) + goto skip; + if (boot_cpu_data.family == CPU_FAMILY_SH2) { extern void __weak sh2_cache_init(void); @@ -312,5 +321,6 @@ void __init cpu_cache_init(void) sh5_cache_init(); } +skip: emit_cache_params(); } |