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Fix bug in adaption of Stefano Babic's CFI driver patch.

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master
Wolfgang Denk 18 years ago committed by Wolfgang Denk
parent 9c0f42ecfe
commit 92eb729bad
1 changed files with 21 additions and 15 deletions
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  1. 36
      drivers/cfi_flash.c

36
drivers/cfi_flash.c
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@ -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;
@ -1144,20 +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);
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;
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;
}
}
}
}

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