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armv7: integrate cache maintenance support

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- Enable I-cache on bootup
- Enable MMU and D-cache immediately after relocation
	- Do necessary initialization before enabling d-cache and MMU
- Changes to cleanup_before_linux()
	- Make changes according to the new framework

Signed-off-by: Aneesh V <aneesh@ti.com>
This commit is contained in:
Aneesh V
2011-06-16 23:30:49 +00:00
committed by Albert ARIBAUD
parent e47f2db537
commit c2dd0d4554
5 changed files with 51 additions and 32 deletions
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7
arch/arm/lib/cache-cp15.c
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@@ -34,6 +34,12 @@
DECLARE_GLOBAL_DATA_PTR;
void __arm_init_before_mmu(void)
{
}
void arm_init_before_mmu(void)
__attribute__((weak, alias("__arm_init_before_mmu")));
static void cp_delay (void)
{
volatile int i;
@@ -65,6 +71,7 @@ static inline void mmu_setup(void)
int i;
u32 reg;
arm_init_before_mmu();
/* Set up an identity-mapping for all 4GB, rw for everyone */
for (i = 0; i < 4096; i++)
page_table[i] = i << 20 | (3 << 10) | 0x12;