From: "Mathieu J. Poirier" mathieu.poirier@linaro.org
Some CPU (i.e u8500) need more cache management before launching the Linux kernel.
Signed-off-by: Mathieu Poirier mathieu.poirier@linaro.org Signed-off-by: John Rigby john.rigby@linaro.org --- arch/arm/cpu/armv7/cpu.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c index c6fa8ef..53c8baf 100644 --- a/arch/arm/cpu/armv7/cpu.c +++ b/arch/arm/cpu/armv7/cpu.c @@ -44,6 +44,10 @@ void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3) void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) __attribute__((weak, alias("save_boot_params_default")));
+void __cpu_cache_management(void){} +void cpu_cache_management(void) __attribute__((weak, + alias("__cpu_cache_management"))); + int cleanup_before_linux(void) { /* @@ -81,5 +85,10 @@ int cleanup_before_linux(void) */ invalidate_dcache_all();
+ /* + * Some CPU need more cache attention before starting the kernel. + */ + cpu_cache_management(); + return 0; }