diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/mx53_evk/mx53_evk.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/board/freescale/mx53_evk/mx53_evk.c b/board/freescale/mx53_evk/mx53_evk.c index 1acfcc8..fd8587e 100644 --- a/board/freescale/mx53_evk/mx53_evk.c +++ b/board/freescale/mx53_evk/mx53_evk.c @@ -39,6 +39,11 @@ #include <fsl_esdhc.h> #endif +#ifdef CONFIG_ARCH_MMU +#include <asm/mmu.h> +#include <asm/arch/mmu.h> +#endif + DECLARE_GLOBAL_DATA_PTR; static u32 system_rev; @@ -93,6 +98,75 @@ inline int is_soc_rev(int rev) return (system_rev & 0xFF) - rev; } +#ifdef CONFIG_ARCH_MMU +void board_mmu_init(void) +{ + unsigned long ttb_base = PHYS_SDRAM_1 + 0x4000; + unsigned long i; + + /* + * Set the TTB register + */ + asm volatile ("mcr p15,0,%0,c2,c0,0" : : "r"(ttb_base) /*:*/); + + /* + * Set the Domain Access Control Register + */ + i = ARM_ACCESS_DACR_DEFAULT; + asm volatile ("mcr p15,0,%0,c3,c0,0" : : "r"(i) /*:*/); + + /* + * First clear all TT entries - ie Set them to Faulting + */ + memset((void *)ttb_base, 0, ARM_FIRST_LEVEL_PAGE_TABLE_SIZE); + /* Actual Virtual Size Attributes Function */ + /* Base Base MB cached? buffered? access permissions */ + /* xxx00000 xxx00000 */ + X_ARM_MMU_SECTION(0x000, 0x000, 0x10, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* ROM, 16M */ + X_ARM_MMU_SECTION(0x070, 0x070, 0x010, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* IRAM */ + X_ARM_MMU_SECTION(0x100, 0x100, 0x040, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* SATA */ + X_ARM_MMU_SECTION(0x180, 0x180, 0x100, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* IPUv3M */ + X_ARM_MMU_SECTION(0x200, 0x200, 0x200, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* GPU */ + X_ARM_MMU_SECTION(0x400, 0x400, 0x300, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* periperals */ + X_ARM_MMU_SECTION(0x700, 0x700, 0x400, + ARM_CACHEABLE, ARM_BUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* CSD0 1G */ + X_ARM_MMU_SECTION(0x700, 0xB00, 0x400, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* CSD0 1G */ + X_ARM_MMU_SECTION(0xF00, 0xF00, 0x100, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* CS1 EIM control*/ + X_ARM_MMU_SECTION(0xF7F, 0xF7F, 0x040, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* NAND Flash buffer */ + X_ARM_MMU_SECTION(0xF80, 0xF80, 0x001, + ARM_UNCACHEABLE, ARM_UNBUFFERABLE, + ARM_ACCESS_PERM_RW_RW); /* iRam */ + + /* Workaround for arm errata #709718 */ + /* Setup PRRR so device is always mapped to non-shared */ + asm volatile ("mrc p15, 0, %0, c10, c2, 0" : "=r"(i) : /*:*/); + i &= (~(3 << 0x10)); + asm volatile ("mcr p15, 0, %0, c10, c2, 0" : : "r"(i) /*:*/); + + /* Enable MMU */ + MMU_ON(); +} +#endif + int dram_init(void) { gd->bd->bi_dram[0].start = PHYS_SDRAM_1; |