diff options
| author | Heiko Schocher <hs@denx.de> | 2011-04-11 14:16:19 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2011-04-21 15:51:39 +0200 |
| commit | 5b448adb4b2f3244419de6409949a730771f8b21 (patch) | |
| tree | a8d5ee5dc0c96a7dc58964086fbbee006e989422 /drivers | |
| parent | 6a011ce851a0ba23ad50f9bac06dc323a863d0c5 (diff) | |
mtd, cfi: read AMD 3-byte (expanded) device ids on 16bit devices
tested on the a4m072 board with a S29GL512P flash.
flinfo without this patch
Bank # 1: CFI conformant flash (16 x 16) Size: 32 MB in 256 Sectors
AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x227E
Erase timeout: 16384 ms, write timeout: 2 ms
Buffer write timeout: 5 ms, buffer size: 32 bytes
[...]
flinfo with this patch
Bank # 1: CFI conformant flash (16 x 16) Size: 32 MB in 256 Sectors
AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x227E2301
Erase timeout: 16384 ms, write timeout: 2 ms
Buffer write timeout: 5 ms, buffer size: 32 bytes
[...]
Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/cfi_flash.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index b1110a138e..aa76f6ce48 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -1202,8 +1202,9 @@ void flash_print_info (flash_info_t * info) info->manufacturer_id); printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X", info->device_id); - if (info->device_id == 0x7E) { - printf("%04X", info->device_id2); + if ((info->device_id & 0xff) == 0x7E) { + printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X", + info->device_id2); } printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n", info->erase_blk_tout, @@ -1599,6 +1600,14 @@ static void cmdset_amd_read_jedec_ids(flash_info_t *info) case FLASH_CFI_16BIT: info->device_id = flash_read_word (info, FLASH_OFFSET_DEVICE_ID); + if ((info->device_id & 0xff) == 0x7E) { + /* AMD 3-byte (expanded) device ids */ + info->device_id2 = flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID2); + info->device_id2 <<= 8; + info->device_id2 |= flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID3); + } break; default: break; |