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31ca9119c3
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> |
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| .. | ||
| config.mk | ||
| law.c | ||
| Makefile | ||
| nand.c | ||
| sdram.c | ||
| tlb.c | ||
| tqm85xx.c | ||
| u-boot.lds | ||