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| author | Jason Liu <r64343@freescale.com> | 2010-05-07 17:46:36 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2010-05-07 18:00:07 +0800 |
| commit | bd4a694934e348acb930f05fe25dcee6b53b3685 (patch) | |
| tree | 358d6c1977cb378bd1f81282d78f057385d32f50 /drivers/mtd/nand | |
| parent | cfb0209bfd87b6076f6f8708c49796bf1a472f9b (diff) | |
| download | u-boot-imx-bd4a694934e348acb930f05fe25dcee6b53b3685.zip u-boot-imx-bd4a694934e348acb930f05fe25dcee6b53b3685.tar.gz u-boot-imx-bd4a694934e348acb930f05fe25dcee6b53b3685.tar.bz2 | |
ENGR00123265 UBOOT:Preserve NAND bad block indication
Preserve NAND bad block indication
Signed-off-by:Jason Liu <r64343@freescale.com>
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 5961b4c..ccb7af1 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -1,5 +1,5 @@ /* - * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved. */ /* @@ -57,6 +57,27 @@ static struct nand_ecclayout nand_hw_eccoob_4k = { .oobfree = {{2, 4} } }; + +static void mxc_nand_bi_swap(struct mtd_info *mtd) +{ + struct nand_chip *this = mtd->priv; + struct nand_info *info = this->priv; + u16 ma, sa, nma, nsa; + + if (!IS_LARGE_PAGE_NAND) + return; + + ma = __raw_readw(BAD_BLK_MARKER_MAIN); + sa = __raw_readw(BAD_BLK_MARKER_SP); + + nma = (ma & 0xFF00) | (sa >> 8); + nsa = (sa & 0x00FF) | (ma << 8); + + __raw_writew(nma, BAD_BLK_MARKER_MAIN); + __raw_writew(nsa, BAD_BLK_MARKER_SP); + +} + /*! * @defgroup NAND_MTD NAND Flash MTD Driver for MXC processors */ @@ -325,6 +346,7 @@ static void send_cmd_interleave(struct mtd_info *mtd, u16 cmd) /* data transfer */ nfc_memcpy(MAIN_AREA0, dbuf, dlen); copy_spare(mtd, obuf, SPARE_AREA0, olen, 0); + mxc_nand_bi_swap(mtd); /* update the value */ dbuf += dlen; @@ -358,6 +380,7 @@ static void send_cmd_interleave(struct mtd_info *mtd, u16 cmd) mxc_nand_ecc_status(mtd); /* data transfer */ + mxc_nand_bi_swap(mtd); nfc_memcpy(dbuf, MAIN_AREA0, dlen); copy_spare(mtd, obuf, SPARE_AREA0, olen, 1); @@ -906,6 +929,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, nfc_memcpy(MAIN_AREA0, info->data_buf, mtd->writesize); copy_spare(mtd, info->oob_buf, SPARE_AREA0, mtd->oobsize, 0); + mxc_nand_bi_swap(mtd); } send_prog_page(mtd, 0); @@ -938,6 +962,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, if (!info->auto_mode) { mxc_nand_ecc_status(mtd); + mxc_nand_bi_swap(mtd); nfc_memcpy(info->data_buf, MAIN_AREA0, mtd->writesize); copy_spare(mtd, info->oob_buf, SPARE_AREA0, mtd->oobsize, 1); @@ -1184,6 +1209,9 @@ skip_it: /* jffs2 not write oob */ /*mtd->flags &= ~MTD_OOB_WRITEABLE;*/ + /* fix up the offset */ + largepage_memorybased.offs = BAD_BLK_MARKER_OOB_OFFS; + /* use flash based bbt */ this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; |