From 633b6ccedf9d536fd93299b2207a5227dedd987c Mon Sep 17 00:00:00 2001 From: "Wu, Josh" Date: Mon, 27 Jul 2015 11:40:17 +0800 Subject: ARM: cache: implement a default weak flush_cache() function Current many cpu use the same flush_cache() function, which just call the flush_dcache_range(). So implement a weak flush_cache() for all the cpus to use. In original weak flush_cache() in arch/arm/lib/cache.c, there has some code for ARM1136 & ARM926ejs. But in the arch/arm/cpu/arm1136/cpu.c and arch/arm/cpu/arm926ejs/cache.c, there implements a real flush_cache() function as well. That means the original code for ARM1136 & ARM926ejs in weak flush_cache() of arch/arm/lib/cache.c is totally useless. So in this patch remove such code in flush_cache() and only call flush_dcache_range(). Signed-off-by: Josh Wu --- arch/arm/cpu/arm926ejs/cache.c | 9 --------- 1 file changed, 9 deletions(-) (limited to 'arch/arm/cpu/arm926ejs/cache.c') diff --git a/arch/arm/cpu/arm926ejs/cache.c b/arch/arm/cpu/arm926ejs/cache.c index 99d1a139b0..e5c1a6ae6c 100644 --- a/arch/arm/cpu/arm926ejs/cache.c +++ b/arch/arm/cpu/arm926ejs/cache.c @@ -69,11 +69,6 @@ void flush_dcache_range(unsigned long start, unsigned long stop) asm volatile("mcr p15, 0, %0, c7, c10, 4\n" : : "r"(0)); } - -void flush_cache(unsigned long start, unsigned long size) -{ - flush_dcache_range(start, start + size); -} #else /* #ifndef CONFIG_SYS_DCACHE_OFF */ void invalidate_dcache_all(void) { @@ -82,10 +77,6 @@ void invalidate_dcache_all(void) void flush_dcache_all(void) { } - -void flush_cache(unsigned long start, unsigned long size) -{ -} #endif /* #ifndef CONFIG_SYS_DCACHE_OFF */ /* -- cgit v1.2.1