From 004a1fdb45fb06ee2faf6e50945ceb79d43a2f41 Mon Sep 17 00:00:00 2001 From: Peter Tyser Date: Tue, 3 Feb 2015 11:58:16 -0600 Subject: nand: yaffs: Remove the "nand write.yaffs" command This command is only enabled by one board, complicates the NAND code, and doesn't appear to have been functioning properly for several years. If there are no bad blocks in the NAND region being written nand_write_skip_bad() will take the shortcut of calling nand_write() which bypasses the special yaffs handling. This causes invalid YAFFS data to be written. See http://lists.denx.de/pipermail/u-boot/2011-September/102830.html for an example and a potential workaround. U-Boot still retains the ability to mount and access YAFFS partitions via CONFIG_YAFFS2. Signed-off-by: Peter Tyser --- drivers/mtd/nand/nand_util.c | 77 +++++++------------------------------------- 1 file changed, 12 insertions(+), 65 deletions(-) (limited to 'drivers/mtd/nand') diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c index f487756071..12dd26a33f 100644 --- a/drivers/mtd/nand/nand_util.c +++ b/drivers/mtd/nand/nand_util.c @@ -580,24 +580,7 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, if (actual) *actual = 0; -#ifdef CONFIG_CMD_NAND_YAFFS - if (flags & WITH_YAFFS_OOB) { - if (flags & (~WITH_YAFFS_OOB & ~WITH_WR_VERIFY)) - return -EINVAL; - - int pages; - pages = nand->erasesize / nand->writesize; - blocksize = (pages * nand->oobsize) + nand->erasesize; - if (*length % (nand->writesize + nand->oobsize)) { - printf("Attempt to write incomplete page" - " in yaffs mode\n"); - return -EINVAL; - } - } else -#endif - { - blocksize = nand->erasesize; - } + blocksize = nand->erasesize; /* * nand_write() handles unaligned, partial page writes. @@ -666,58 +649,22 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, else write_size = blocksize - block_offset; -#ifdef CONFIG_CMD_NAND_YAFFS - if (flags & WITH_YAFFS_OOB) { - int page, pages; - size_t pagesize = nand->writesize; - size_t pagesize_oob = pagesize + nand->oobsize; - struct mtd_oob_ops ops; - - ops.len = pagesize; - ops.ooblen = nand->oobsize; - ops.mode = MTD_OPS_AUTO_OOB; - ops.ooboffs = 0; - - pages = write_size / pagesize_oob; - for (page = 0; page < pages; page++) { - WATCHDOG_RESET(); - - ops.datbuf = p_buffer; - ops.oobbuf = ops.datbuf + pagesize; - - rval = mtd_write_oob(nand, offset, &ops); - - if ((flags & WITH_WR_VERIFY) && !rval) - rval = nand_verify_page_oob(nand, - &ops, offset); - - if (rval != 0) - break; - - offset += pagesize; - p_buffer += pagesize_oob; - } - } - else -#endif - { - truncated_write_size = write_size; + truncated_write_size = write_size; #ifdef CONFIG_CMD_NAND_TRIMFFS - if (flags & WITH_DROP_FFS) - truncated_write_size = drop_ffs(nand, p_buffer, - &write_size); + if (flags & WITH_DROP_FFS) + truncated_write_size = drop_ffs(nand, p_buffer, + &write_size); #endif - rval = nand_write(nand, offset, &truncated_write_size, - p_buffer); + rval = nand_write(nand, offset, &truncated_write_size, + p_buffer); - if ((flags & WITH_WR_VERIFY) && !rval) - rval = nand_verify(nand, offset, - truncated_write_size, p_buffer); + if ((flags & WITH_WR_VERIFY) && !rval) + rval = nand_verify(nand, offset, + truncated_write_size, p_buffer); - offset += write_size; - p_buffer += write_size; - } + offset += write_size; + p_buffer += write_size; if (rval != 0) { printf("NAND write to offset %llx failed %d\n", -- cgit v1.2.1