X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmtd%2Fnand%2Fnand_util.c;h=71285b6669416b1402ebd8b03f7b9957b47a37a4;hb=57dc53a72460e8e301fa1cc7951b41db8e731485;hp=1e0210a9a416a7513149466a443bc990115da24b;hpb=1a4596601fd395f3afb8f82f3f840c5e00bdd57a;p=u-boot diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c index 1e0210a9a4..71285b6669 100644 --- a/drivers/mtd/nand/nand_util.c +++ b/drivers/mtd/nand/nand_util.c @@ -14,13 +14,16 @@ * Copyright (C) 2008 Nokia Corporation: drop_ffs() function by * Artem Bityutskiy from mtd-utils * - * SPDX-License-Identifier: GPL-2.0+ + * Copyright 2010 Freescale Semiconductor + * + * SPDX-License-Identifier: GPL-2.0 */ #include #include #include #include +#include #include #include @@ -51,7 +54,6 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts) struct jffs2_unknown_node cleanmarker; erase_info_t erase; unsigned long erase_length, erased_length; /* in blocks */ - int bbtest = 1; int result; int percent_complete = -1; const char *mtd_device = meminfo->name; @@ -90,6 +92,7 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts) kfree(chip->bbt); } chip->bbt = NULL; + chip->options &= ~NAND_BBT_SCANNED; } for (erased_length = 0; @@ -102,7 +105,7 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts) puts("Size of erase exceeds limit\n"); return -EFBIG; } - if (!opts->scrub && bbtest) { + if (!opts->scrub) { int ret = mtd_block_isbad(meminfo, erase.addr); if (ret > 0) { if (!opts->quiet) @@ -143,8 +146,8 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts) ops.mode = MTD_OPS_AUTO_OOB; result = mtd_write_oob(meminfo, - erase.addr, - &ops); + erase.addr, + &ops); if (result != 0) { printf("\n%s: MTD writeoob failure: %d\n", mtd_device, result); @@ -178,14 +181,14 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts) if (!opts->quiet) printf("\n"); - if (opts->scrub) - chip->scan_bbt(meminfo); - return 0; } #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK +#define NAND_CMD_LOCK_TIGHT 0x2c +#define NAND_CMD_LOCK_STATUS 0x7a + /****************************************************************************** * Support for locking / unlocking operations of some NAND devices *****************************************************************************/ @@ -314,7 +317,7 @@ int nand_unlock(struct mtd_info *mtd, loff_t start, size_t length, int page; struct nand_chip *chip = mtd->priv; - debug("nand_unlock%s: start: %08llx, length: %d!\n", + debug("nand_unlock%s: start: %08llx, length: %zd!\n", allexcept ? " (allexcept)" : "", start, length); /* select the NAND device */ @@ -461,6 +464,87 @@ static size_t drop_ffs(const nand_info_t *nand, const u_char *buf, } #endif +/** + * nand_verify_page_oob: + * + * Verify a page of NAND flash, including the OOB. + * Reads page of NAND and verifies the contents and OOB against the + * values in ops. + * + * @param nand NAND device + * @param ops MTD operations, including data to verify + * @param ofs offset in flash + * @return 0 in case of success + */ +int nand_verify_page_oob(nand_info_t *nand, struct mtd_oob_ops *ops, loff_t ofs) +{ + int rval; + struct mtd_oob_ops vops; + size_t verlen = nand->writesize + nand->oobsize; + + memcpy(&vops, ops, sizeof(vops)); + + vops.datbuf = memalign(ARCH_DMA_MINALIGN, verlen); + + if (!vops.datbuf) + return -ENOMEM; + + vops.oobbuf = vops.datbuf + nand->writesize; + + rval = mtd_read_oob(nand, ofs, &vops); + if (!rval) + rval = memcmp(ops->datbuf, vops.datbuf, vops.len); + if (!rval) + rval = memcmp(ops->oobbuf, vops.oobbuf, vops.ooblen); + + free(vops.datbuf); + + return rval ? -EIO : 0; +} + +/** + * nand_verify: + * + * Verify a region of NAND flash. + * Reads NAND in page-sized chunks and verifies the contents against + * the contents of a buffer. The offset into the NAND must be + * page-aligned, and the function doesn't handle skipping bad blocks. + * + * @param nand NAND device + * @param ofs offset in flash + * @param len buffer length + * @param buf buffer to read from + * @return 0 in case of success + */ +int nand_verify(nand_info_t *nand, loff_t ofs, size_t len, u_char *buf) +{ + int rval = 0; + size_t verofs; + size_t verlen = nand->writesize; + uint8_t *verbuf = memalign(ARCH_DMA_MINALIGN, verlen); + + if (!verbuf) + return -ENOMEM; + + /* Read the NAND back in page-size groups to limit malloc size */ + for (verofs = ofs; verofs < ofs + len; + verofs += verlen, buf += verlen) { + verlen = min(nand->writesize, (uint32_t)(ofs + len - verofs)); + rval = nand_read(nand, verofs, &verlen, verbuf); + if (!rval || (rval == -EUCLEAN)) + rval = memcmp(buf, verbuf, verlen); + + if (rval) + break; + } + + free(verbuf); + + return rval ? -EIO : 0; +} + + + /** * nand_write_skip_bad: * @@ -497,24 +581,7 @@ 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) - 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. @@ -552,6 +619,10 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, if (!need_skip && !(flags & WITH_DROP_FFS)) { rval = nand_write(nand, offset, length, buffer); + + if ((flags & WITH_WR_VERIFY) && !rval) + rval = nand_verify(nand, offset, *length, buffer); + if (rval == 0) return 0; @@ -579,48 +650,22 @@ 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 (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); - offset += write_size; - p_buffer += write_size; - } + 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); + + offset += write_size; + p_buffer += write_size; if (rval != 0) { printf("NAND write to offset %llx failed %d\n", @@ -795,7 +840,7 @@ int nand_torture(nand_info_t *nand, loff_t offset) patt_count = ARRAY_SIZE(patterns); - buf = malloc(nand->erasesize); + buf = malloc_cache_aligned(nand->erasesize); if (buf == NULL) { puts("Out of memory for erase block buffer\n"); return -ENOMEM;