diff options
Diffstat (limited to 'drivers/cfi_flash.c')
| -rw-r--r-- | drivers/cfi_flash.c | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index 9b10220..2699cce 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -104,6 +104,7 @@ #define FLASH_OFFSET_DEVICE_ID2 0x0E #define FLASH_OFFSET_DEVICE_ID3 0x0F #define FLASH_OFFSET_CFI 0x55 +#define FLASH_OFFSET_CFI_ALT 0x555 #define FLASH_OFFSET_CFI_RESP 0x10 #define FLASH_OFFSET_PRIMARY_VENDOR 0x13 #define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15 /* extended query table primary addr */ @@ -154,6 +155,8 @@ typedef union { #define NUM_ERASE_REGIONS 4 /* max. number of erase regions */ +static uint flash_offset_cfi[2]={FLASH_OFFSET_CFI,FLASH_OFFSET_CFI_ALT}; + /* use CFG_MAX_FLASH_BANKS_DETECT if defined */ #ifdef CFG_MAX_FLASH_BANKS_DETECT static ulong bank_base[CFG_MAX_FLASH_BANKS_DETECT] = CFG_FLASH_BANKS_LIST; @@ -343,7 +346,7 @@ unsigned long flash_init (void) if (flash_info[i].flash_id == FLASH_UNKNOWN) { #ifndef CFG_FLASH_QUIET_TEST printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", - i, flash_info[i].size, flash_info[i].size << 20); + i+1, flash_info[i].size, flash_info[i].size << 20); #endif /* CFG_FLASH_QUIET_TEST */ } #ifdef CFG_FLASH_PROTECTION @@ -1136,6 +1139,7 @@ static void flash_read_jedec_ids (flash_info_t * info) */ static int flash_detect_cfi (flash_info_t * info) { + int cfi_offset; debug ("flash detect cfi\n"); for (info->portwidth = CFG_FLASH_CFI_WIDTH; @@ -1144,19 +1148,22 @@ static int flash_detect_cfi (flash_info_t * info) info->chipwidth <= info->portwidth; info->chipwidth <<= 1) { flash_write_cmd (info, 0, 0, info->cmd_reset); - flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI); - if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') - && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') - && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { - info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE); - debug ("device interface is %d\n", - info->interface); - debug ("found port %d chip %d ", - info->portwidth, info->chipwidth); - debug ("port %d bits chip %d bits\n", - info->portwidth << CFI_FLASH_SHIFT_WIDTH, - info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - return 1; + for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi)/sizeof(uint); cfi_offset++) { + flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI); + if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q') + && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') + && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) { + info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE); + info->cfi_offset=flash_offset_cfi[cfi_offset]; + debug ("device interface is %d\n", + info->interface); + debug ("found port %d chip %d ", + info->portwidth, info->chipwidth); + debug ("port %d bits chip %d bits\n", + info->portwidth << CFI_FLASH_SHIFT_WIDTH, + info->chipwidth << CFI_FLASH_SHIFT_WIDTH); + return 1; + } } } } @@ -1193,7 +1200,7 @@ ulong flash_get_size (ulong base, int banknum) info->vendor = flash_read_ushort (info, 0, FLASH_OFFSET_PRIMARY_VENDOR); flash_read_jedec_ids (info); - flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI); + flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI); num_erase_regions = flash_read_uchar (info, FLASH_OFFSET_NUM_ERASE_REGIONS); info->ext_addr = flash_read_ushort (info, 0, |