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| author | Wolfgang Grandegger <wg@grandegger.com> | 2009-02-11 18:38:19 +0100 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2009-02-16 18:05:58 -0600 |
| commit | 31ca9119c3186cec579b54d2a7a2b361b4d2b7bf (patch) | |
| tree | 1ca51e69e48a7ed7d4949888465a7941d9d083fa /board/lpd7a40x/lowlevel_init.S | |
| parent | a1c8a719262151f97119e76166043ee3da3f97b2 (diff) | |
| download | u-boot-imx-31ca9119c3186cec579b54d2a7a2b361b4d2b7bf.zip u-boot-imx-31ca9119c3186cec579b54d2a7a2b361b4d2b7bf.tar.gz u-boot-imx-31ca9119c3186cec579b54d2a7a2b361b4d2b7bf.tar.bz2 | |
MPC85xx: TQM85xx: fix flash protection for boot loader
As the reset vector is located at 0xfffffffc, all flash sectors from the
beginning of the U-Boot binary to 0xffffffff must be protected. On the
TQM8548-AG having small sectors at the end of the flash it happened that
the last two sector were not protected and an "erase all" left an
un-bootable system behind:
Bank # 2: CFI conformant FLASH (32 x 16) Size: 32 MB in 270 Sectors
AMD Standard command set, Manufacturer ID: 0xEC, Device ID: 0x257E
Erase timeout: 8192 ms, write timeout: 1 ms
FFFA0000 E RO FFFC0000 RO FFFE0000 RO FFFE4000 RO FFFE8000 RO
FFFEC000 RO FFFF0000 RO FFFF4000 RO FFFF8000 E FFFFC000
The same bug seems to be in drivers/mtd/cfi_flash.c:flash_init() and many
board BSPs as well.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Diffstat (limited to 'board/lpd7a40x/lowlevel_init.S')
0 files changed, 0 insertions, 0 deletions