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| author | Bartlomiej Sieka <tur@semihalf.com> | 2007-12-11 13:59:57 +0100 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2007-12-13 12:00:37 +0100 |
| commit | 42026c9cb3a76849b41e6e24abfb7b56807a5c1a (patch) | |
| tree | afa2597b10e02c1c3f8464b90cc3805d552f11ff | |
| parent | 9692c2734a47f23b44a0f68042a3e2ca8d1bfb39 (diff) | |
| download | u-boot-imx-42026c9cb3a76849b41e6e24abfb7b56807a5c1a.zip u-boot-imx-42026c9cb3a76849b41e6e24abfb7b56807a5c1a.tar.gz u-boot-imx-42026c9cb3a76849b41e6e24abfb7b56807a5c1a.tar.bz2 | |
CFI: synchronize command offsets with Linux CFI driver
Fixes non-working CFI Flash on the Inka4x0 board.
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
| -rw-r--r-- | drivers/mtd/cfi_flash.c | 23 | ||||
| -rw-r--r-- | include/flash.h | 1 |
2 files changed, 21 insertions, 3 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 66754cd..c3293d0 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -1231,9 +1231,26 @@ static int flash_detect_cfi (flash_info_t * info) debug ("port %d bits chip %d bits\n", info->portwidth << CFI_FLASH_SHIFT_WIDTH, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); - /* this probably only works if info->interface == FLASH_CFI_X8X16 */ - info->addr_unlock1 = (info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555; - info->addr_unlock2 = (info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA; + + /* calculate command offsets as in the Linux driver */ + info->addr_unlock1 = 0x555; + info->addr_unlock2 = 0x2aa; + + /* + * modify the unlock address if we are + * in compatibility mode + */ + if ( /* x8/x16 in x8 mode */ + ((info->chipwidth == FLASH_CFI_BY8) && + (info->interface == FLASH_CFI_X8X16)) || + /* x16/x32 in x16 mode */ + ((info->chipwidth == FLASH_CFI_BY16) && + (info->interface == FLASH_CFI_X16X32))) + { + info->addr_unlock1 = 0xaaa; + info->addr_unlock2 = 0x555; + } + info->name = "CFI conformant"; return 1; } diff --git a/include/flash.h b/include/flash.h index 6e252cc..2ed1e20 100644 --- a/include/flash.h +++ b/include/flash.h @@ -80,6 +80,7 @@ typedef struct { #define FLASH_CFI_X8 0x00 #define FLASH_CFI_X16 0x01 #define FLASH_CFI_X8X16 0x02 +#define FLASH_CFI_X16X32 0x05 /* convert between bit value and numeric value */ #define CFI_FLASH_SHIFT_WIDTH 3 |