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authorroy zang <tie-fei.zang@freescale.com>2007-01-04 11:10:05 +0800
committerZang Tiefei <roy@bus.ap.freescale.net>2007-01-04 11:10:05 +0800
commita41969e09b9d886091a804c2ba5f1ab84b084dd3 (patch)
tree96d4b03713537e6c0a696e4770c23f9d39792666 /drivers
parentd3bb5ec198edad4869ac5276a5899881b7bf5433 (diff)
parent92eb729bad876725aeea908d2addba0800620840 (diff)
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Merge branch 'master' into hpc2
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cfi_flash.c37
-rw-r--r--drivers/nand/nand.c17
2 files changed, 32 insertions, 22 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c
index 8f959e7..a834cb4 100644
--- a/drivers/cfi_flash.c
+++ b/drivers/cfi_flash.c
@@ -111,6 +111,7 @@
#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 */
@@ -161,6 +162,8 @@ 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;
@@ -350,7 +353,7 @@ 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
@@ -1153,6 +1156,7 @@ 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;
@@ -1161,19 +1165,22 @@ 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;
+ }
}
}
}
@@ -1210,7 +1217,7 @@ 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,
diff --git a/drivers/nand/nand.c b/drivers/nand/nand.c
index 3899045..9fef71d 100644
--- a/drivers/nand/nand.c
+++ b/drivers/nand/nand.c
@@ -39,7 +39,7 @@ static ulong base_address[CFG_MAX_NAND_DEVICE] = CFG_NAND_BASE_LIST;
static const char default_nand_name[] = "nand";
-extern void board_nand_init(struct nand_chip *nand);
+extern int board_nand_init(struct nand_chip *nand);
static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand,
ulong base_addr)
@@ -47,13 +47,16 @@ static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand,
mtd->priv = nand;
nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr;
- board_nand_init(nand);
-
- if (nand_scan(mtd, 1) == 0) {
- if (!mtd->name)
- mtd->name = (char *)default_nand_name;
- } else
+ if (board_nand_init(nand) == 0) {
+ if (nand_scan(mtd, 1) == 0) {
+ if (!mtd->name)
+ mtd->name = (char *)default_nand_name;
+ } else
+ mtd->name = NULL;
+ } else {
mtd->name = NULL;
+ mtd->size = 0;
+ }
}