diff options
Diffstat (limited to 'recipes/u-boot/u-boot-mkimage-openmoko-native/bbt-scan-second.patch')
| -rw-r--r-- | recipes/u-boot/u-boot-mkimage-openmoko-native/bbt-scan-second.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/recipes/u-boot/u-boot-mkimage-openmoko-native/bbt-scan-second.patch b/recipes/u-boot/u-boot-mkimage-openmoko-native/bbt-scan-second.patch new file mode 100644 index 0000000000..37b2807908 --- /dev/null +++ b/recipes/u-boot/u-boot-mkimage-openmoko-native/bbt-scan-second.patch @@ -0,0 +1,69 @@ +Scan also the second OOB page for bad block information. + +board/neo1973/gta01/nand.c (board_nand_init): added board-specific badblock + pattern which sets NAND_BBT_SCAN2NDPAGE +drivers/nand/nand_base.c (nand_block_bad): also consider the second page in a + block if NAND_BBT_SCAN2NDPAGE is set + +- Werner Almesberger <werner@openmoko.org> + +Index: u-boot/board/neo1973/gta01/nand.c +=================================================================== +--- u-boot.orig/board/neo1973/gta01/nand.c ++++ u-boot/board/neo1973/gta01/nand.c +@@ -113,9 +113,23 @@ + } + + ++/* Derived from drivers/nand/nand_bbt.c:smallpage_flashbased */ ++ ++static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; ++ ++static struct nand_bbt_descr badblock_pattern = { ++ .options = ++ NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES | NAND_BBT_SCAN2NDPAGE, ++ .offs = 5, ++ .len = 1, ++ .pattern = scan_ff_pattern ++}; ++ ++ + int board_nand_init(struct nand_chip *nand) + { + nand->read_otp = samsung_nand_read_otp; + nand->write_otp = samsung_nand_write_otp; ++ nand->badblock_pattern = &badblock_pattern; + return s3c24x0_nand_init(nand); + } +Index: u-boot/drivers/nand/nand_base.c +=================================================================== +--- u-boot.orig/drivers/nand/nand_base.c ++++ u-boot/drivers/nand/nand_base.c +@@ -421,7 +421,7 @@ + * + * Check, if the block is bad. + */ +-static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) ++static int nand_block_bad_page(struct mtd_info *mtd, loff_t ofs, int getchip) + { + int page, chipnr, res = 0; + struct nand_chip *this = mtd->priv; +@@ -460,6 +460,18 @@ + return res; + } + ++static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) ++{ ++ struct nand_chip *this = mtd->priv; ++ ++ if (nand_block_bad_page(mtd, ofs, getchip)) ++ return 1; ++ if (this->badblock_pattern->options & NAND_BBT_SCAN2NDPAGE && ++ nand_block_bad_page(mtd, ofs+(1 << this->page_shift), getchip)) ++ return 1; ++ return 0; ++} ++ + /** + * nand_default_block_markbad - [DEFAULT] mark a block bad + * @mtd: MTD device structure |