diff options
| -rw-r--r-- | drivers/mtd/cfi_flash.c | 25 | ||||
| -rw-r--r-- | include/flash.h | 1 |
2 files changed, 25 insertions, 1 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index b2dfc5369..c8099db14 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -1128,7 +1128,7 @@ int flash_erase (flash_info_t * info, int s_first, int s_last) AMD_CMD_ERASE_START); flash_unlock_seq (info, sect); flash_write_cmd (info, sect, 0, - AMD_CMD_ERASE_SECTOR); + info->cmd_erase_sector); break; #ifdef CONFIG_FLASH_CFI_LEGACY case CFI_CMDSET_AMD_LEGACY: @@ -1733,6 +1733,7 @@ static void cmdset_amd_read_jedec_ids(flash_info_t *info) static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry) { info->cmd_reset = AMD_CMD_RESET; + info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR; cmdset_amd_read_jedec_ids(info); flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI); @@ -2003,6 +2004,25 @@ static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry) } } +static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry) +{ + /* + * SST, for many recent nor parallel flashes, says they are + * CFI-conformant. This is not true, since qry struct. + * reports a std. AMD command set (0x0002), while SST allows to + * erase two different sector sizes for the same memory. + * 64KB sector (SST call it block) needs 0x30 to be erased. + * 4KB sector (SST call it sector) needs 0x50 to be erased. + * Since CFI query detect the 4KB number of sectors, users expects + * a sector granularity of 4KB, and it is here set. + */ + if (info->device_id == 0x5D23 || /* SST39VF3201B */ + info->device_id == 0x5C23) { /* SST39VF3202B */ + /* set sector granularity to 4KB */ + info->cmd_erase_sector=0x50; + } +} + /* * The following code cannot be run from FLASH! * @@ -2081,6 +2101,9 @@ ulong flash_get_size (phys_addr_t base, int banknum) case 0x0020: flash_fixup_stm(info, &qry); break; + case 0x00bf: /* SST */ + flash_fixup_sst(info, &qry); + break; } debug ("manufacturer is %d\n", info->vendor); diff --git a/include/flash.h b/include/flash.h index 7db599e78..c7acc977e 100644 --- a/include/flash.h +++ b/include/flash.h @@ -44,6 +44,7 @@ typedef struct { ulong buffer_write_tout; /* maximum buffer write timeout */ ushort vendor; /* the primary vendor id */ ushort cmd_reset; /* vendor specific reset command */ + uchar cmd_erase_sector; /* vendor specific erase sect. command */ ushort interface; /* used for x8/x16 adjustments */ ushort legacy_unlock; /* support Intel legacy (un)locking */ ushort manufacturer_id; /* manufacturer id */ |