Messages in this thread Patch in this message | | | From | Lee Jones <> | Subject | [RFC 27/47] mtd: nand: stm_nand_bch: write IBBT to Flash | Date | Tue, 25 Mar 2014 08:19:44 +0000 |
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Write BBT contents to the first page of a specified block, then update the IBBT header and write it to last page of the same block.
Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/mtd/nand/stm_nand_bch.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+)
diff --git a/drivers/mtd/nand/stm_nand_bch.c b/drivers/mtd/nand/stm_nand_bch.c index 2d03113..76ed99b 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -541,6 +541,35 @@ static void bch_fill_ibbt_header(struct nandi_controller *nandi, memcpy(ibbt_header->author, author, sizeof(author)); } +/* Write IBBT to Flash */ +static int bch_write_bbt_data(struct nandi_controller *nandi, + struct nandi_bbt_info *bbt_info, + uint32_t block, int bak, uint8_t vers) +{ + uint32_t page_size = nandi->info.mtd.writesize; + uint32_t block_size = nandi->info.mtd.erasesize; + struct nand_ibbt_bch_header *ibbt_header = + (struct nand_ibbt_bch_header *)nandi->page_buf; + loff_t offs; + + nandi->cached_page = -1; + + /* Write BBT contents to first page of block */ + offs = (loff_t)block << nandi->block_shift; + if (bch_write_page(nandi, offs, bbt_info->bbt) & NAND_STATUS_FAIL) + return 1; + + /* Update IBBT header and write to last page of block */ + memset(ibbt_header, 0xff, nandi->info.mtd.writesize); + bch_fill_ibbt_header(nandi, ibbt_header, bak, vers); + offs += block_size - page_size; + if (bch_write_page(nandi, offs, (uint8_t *)ibbt_header) & + NAND_STATUS_FAIL) + return 1; + + return 0; +} + /* Scan block for IBBT signature */ static int bch_find_ibbt_sig(struct nandi_controller *nandi, uint32_t block, int *bak, uint8_t *vers, -- 1.8.3.2
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