Commit e8eac437 authored by Richard Retanubun's avatar Richard Retanubun Committed by Stefan Roese

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: default avatarRichard Retanubun <>
Signed-off-by: default avatarStefan Roese <>
parent 0f8e851e
......@@ -1808,6 +1808,20 @@ static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *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) {
* 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);
case 0x0020:
flash_fixup_stm(info, &qry);
debug ("manufacturer is %d\n", info->vendor);
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