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| author | wdenk <wdenk> | 2003-11-17 21:45:27 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2003-11-17 21:45:27 +0000 |
| commit | b4757cee52597ab5a67c30a1bf2a3208209e1ccb (patch) | |
| tree | 65fb2ebe74d21d96ad26881d73e7a9e5a1f0e849 /board/trab/flash.c | |
| parent | 5bb226e821ea3c10c52d768ffab7952204b0f816 (diff) | |
| download | u-boot-imx-b4757cee52597ab5a67c30a1bf2a3208209e1ccb.zip u-boot-imx-b4757cee52597ab5a67c30a1bf2a3208209e1ccb.tar.gz u-boot-imx-b4757cee52597ab5a67c30a1bf2a3208209e1ccb.tar.bz2 | |
Fix flash driver for TRAB board (must use Unlock Bypass Reset command
to exit Unlock Bypass Mode); adjust timings for flash, SRAM and CPLD
Diffstat (limited to 'board/trab/flash.c')
| -rw-r--r-- | board/trab/flash.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/board/trab/flash.c b/board/trab/flash.c index aba0631..764c57b 100644 --- a/board/trab/flash.c +++ b/board/trab/flash.c @@ -39,7 +39,10 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; #define CMD_PROGRAM 0x00A000A0 #define CMD_UNLOCK_BYPASS 0x00200020 #define CMD_READ_MANF_ID 0x00900090 +#define CMD_UNLOCK_BYPASS_RES1 0x00900090 +#define CMD_UNLOCK_BYPASS_RES2 0x00000000 +#define MEM_FLASH_ADDR (*(volatile u32 *)CFG_FLASH_BASE) #define MEM_FLASH_ADDR1 (*(volatile u32 *)(CFG_FLASH_BASE + (0x00000555 << 2))) #define MEM_FLASH_ADDR2 (*(volatile u32 *)(CFG_FLASH_BASE + (0x000002AA << 2))) @@ -331,9 +334,6 @@ volatile static int write_word (flash_info_t * info, ulong dest, #endif iflag = disable_interrupts (); - MEM_FLASH_ADDR1 = CMD_UNLOCK1; - MEM_FLASH_ADDR2 = CMD_UNLOCK2; - MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS; *addr = CMD_PROGRAM; *addr = data; @@ -402,6 +402,10 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) int l; int i, rc; + MEM_FLASH_ADDR1 = CMD_UNLOCK1; + MEM_FLASH_ADDR2 = CMD_UNLOCK2; + MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS; + wp = (addr & ~3); /* get lower word aligned address */ /* @@ -422,7 +426,7 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) } if ((rc = write_word (info, wp, data)) != 0) { - return (rc); + goto Done; } wp += 4; } @@ -441,7 +445,7 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) } if ((rc = write_word (info, wp, data)) != 0) { - return (rc); + goto Done; } src += 4; wp += 4; @@ -449,7 +453,8 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) } if (cnt == 0) { - return ERR_OK; + rc = ERR_OK; + goto Done; } /* @@ -464,7 +469,14 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) data = (data >> 8) | (*(uchar *) cp << 24); } - return write_word (info, wp, data); + rc = write_word (info, wp, data); + + Done: + + MEM_FLASH_ADDR = CMD_UNLOCK_BYPASS_RES1; + MEM_FLASH_ADDR = CMD_UNLOCK_BYPASS_RES2; + + return (rc); } /*----------------------------------------------------------------------- |