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| author | Richard Retanubun <RichardRetanubun@RuggedCom.com> | 2009-01-14 08:44:26 -0500 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2009-01-26 10:59:48 +0100 |
| commit | e8eac437189430d8e04a5d254ed92c58bc534a79 (patch) | |
| tree | 67196c67e92a5b966fe6ad8a50c741a76dd101e7 /drivers/mtd/cfi_flash.c | |
| parent | 0f8e851e897b535959a0781171910cd97f33c30c (diff) | |
| download | u-boot-imx-e8eac437189430d8e04a5d254ed92c58bc534a79.zip u-boot-imx-e8eac437189430d8e04a5d254ed92c58bc534a79.tar.gz u-boot-imx-e8eac437189430d8e04a5d254ed92c58bc534a79.tar.bz2 | |
CFI: Add geometry reversal for STMicro M29W320ET
Added flash_fixup_stm to fix geometry reversal on STMicro M29W320ET flash chip.
Modeled after flash_fixup_amd, this patch handles the geometry reversal
or erase sectors that exist for ST Micro (now Numonyx) M29W320ET flash.
Since I cannot test all STM's chips, the detection is implemented as
narrow as possible for now.
Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'drivers/mtd/cfi_flash.c')
| -rw-r--r-- | drivers/mtd/cfi_flash.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index bc5e151..84ff7e8 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -1808,6 +1808,20 @@ static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry) cfi_reverse_geometry(qry); } +static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry) +{ + /* check if flash geometry needs reversal */ + if (qry->num_erase_regions > 1) { + /* reverse geometry if top boot part */ + if (info->cfi_version < 0x3131) { + /* CFI < 1.1, guess by device id (only M29W320ET now) */ + if (info->device_id == 0x2256) { + cfi_reverse_geometry(qry); + } + } + } +} + /* * The following code cannot be run from FLASH! * @@ -1881,6 +1895,9 @@ ulong flash_get_size (ulong base, int banknum) case 0x001f: flash_fixup_atmel(info, &qry); break; + case 0x0020: + flash_fixup_stm(info, &qry); + break; } debug ("manufacturer is %d\n", info->vendor); |