From: "Mathieu J. Poirier" <mathieu.poir...@linaro.org>
Some CPU (i.e u8500) need more cache management before launching
the Linux kernel.
Signed-off-by: Mathieu Poirier <mathieu.poir...@linaro.org>
Signed-off-by: John Rigby <john.ri...@linaro.org>
---
Changes for v2:
- Moved from __attribute__(...) to __weak.
---
arch/arm/cpu/armv7/cpu.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c
index c6fa8ef..cc46328 100644
--- a/arch/arm/cpu/armv7/cpu.c
+++ b/arch/arm/cpu/armv7/cpu.c
@@ -36,6 +36,7 @@
#include <asm/system.h>
#include <asm/cache.h>
#include <asm/armv7.h>
+#include <linux/compiler.h>
void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3)
{
@@ -44,6 +45,8 @@ 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 __weak cpu_cache_management(void){}
+
int cleanup_before_linux(void)
{
/*
@@ -81,5 +84,10 @@ int cleanup_before_linux(void)
*/
invalidate_dcache_all();
+ /*
+ * Some CPU need more cache attention before starting the kernel.
+ */
+ cpu_cache_management();
+
return 0;
}
--
1.7.5.4
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