From e8eac437189430d8e04a5d254ed92c58bc534a79 Mon Sep 17 00:00:00 2001 From: Richard Retanubun Date: Wed, 14 Jan 2009 08:44:26 -0500 Subject: 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 Signed-off-by: Stefan Roese --- drivers/mtd/cfi_flash.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers/mtd') diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index bc5e1514e4..84ff7e8095 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); -- cgit