From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-we0-f177.google.com ([74.125.82.177]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Wfnl9-0003Ei-9h for linux-mtd@lists.infradead.org; Thu, 01 May 2014 09:58:31 +0000 Received: by mail-we0-f177.google.com with SMTP id t60so2788068wes.8 for ; Thu, 01 May 2014 02:58:09 -0700 (PDT) From: Lee Jones To: linux-kernel@vger.kernel.org Subject: [PATCH 30/47] mtd: nand: stm_nand_bch: write IBBT to Flash Date: Thu, 1 May 2014 10:56:37 +0100 Message-Id: <1398938214-17847-31-git-send-email-lee.jones@linaro.org> In-Reply-To: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> References: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> Cc: Lee Jones , computersforpeace@gmail.com, linux-mtd@lists.infradead.org, kernel@stlinux.com List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 --- 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 bf8669b..8b70a36 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -758,6 +758,35 @@ 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