diff options
| author | Aneesh V <aneesh@ti.com> | 2011-06-16 23:30:49 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-07-04 10:55:25 +0200 |
| commit | c2dd0d45540397704de9b13287417d21049d34c6 (patch) | |
| tree | 1fa1e0a14c4061d1090596d227ea4f516d5e483a /arch/arm/lib | |
| parent | e47f2db5371047eb9bcd115fee084e6a8a92a239 (diff) | |
armv7: integrate cache maintenance support
- 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>
Diffstat (limited to 'arch/arm/lib')
| -rw-r--r-- | arch/arm/lib/board.c | 6 | ||||
| -rw-r--r-- | arch/arm/lib/cache-cp15.c | 7 | ||||
| -rw-r--r-- | arch/arm/lib/cache.c | 5 |
3 files changed, 13 insertions, 5 deletions
diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c index 4f88f5823b..fc52a26b79 100644 --- a/arch/arm/lib/board.c +++ b/arch/arm/lib/board.c @@ -450,6 +450,12 @@ void board_init_r (gd_t *id, ulong dest_addr) gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ monitor_flash_len = _end_ofs; + /* + * Enable D$: + * I$, if needed, must be already enabled in start.S + */ + dcache_enable(); + debug ("monitor flash len: %08lX\n", monitor_flash_len); board_init(); /* Setup chipselects */ diff --git a/arch/arm/lib/cache-cp15.c b/arch/arm/lib/cache-cp15.c index ba73fb925c..51831a96b5 100644 --- a/arch/arm/lib/cache-cp15.c +++ b/arch/arm/lib/cache-cp15.c @@ -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; diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c index 27123cd121..dc3242c90d 100644 --- a/arch/arm/lib/cache.c +++ b/arch/arm/lib/cache.c @@ -38,11 +38,6 @@ void __flush_cache(unsigned long start, unsigned long size) /* disable write buffer as well (page 2-22) */ asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0)); #endif -#ifdef CONFIG_OMAP34XX - void v7_flush_cache_all(void); - - v7_flush_cache_all(); -#endif return; } void flush_cache(unsigned long start, unsigned long size) |