+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/mtd/nand/nand_util.c
*
* Copyright (C) 2008 Nokia Corporation: drop_ffs() function by
* Artem Bityutskiy <dedekind1@gmail.com> from mtd-utils
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
* Copyright 2010 Freescale Semiconductor
- * The portions of this file whose copyright is held by Freescale and which
- * are not considered a derived work of GPL v2-only code may be distributed
- * and/or modified under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
*/
#include <common.h>
#include <command.h>
#include <watchdog.h>
#include <malloc.h>
+#include <memalign.h>
#include <div64.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
#include <linux/mtd/mtd.h>
#include <nand.h>
#include <jffs2/jffs2.h>
* nand_erase_opts: - erase NAND flash with support for various options
* (jffs2 formatting)
*
- * @param meminfo NAND device to erase
+ * @param mtd nand mtd instance to erase
* @param opts options, @see struct nand_erase_options
* @return 0 in case of success
*
* This code is ported from flash_eraseall.c from Linux mtd utils by
* Arcom Control System Ltd.
*/
-int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts)
+int nand_erase_opts(struct mtd_info *mtd,
+ 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;
+ const char *mtd_device = mtd->name;
struct mtd_oob_ops oob_opts;
- struct nand_chip *chip = meminfo->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
- if ((opts->offset & (meminfo->erasesize - 1)) != 0) {
+ if ((opts->offset & (mtd->erasesize - 1)) != 0) {
printf("Attempt to erase non block-aligned data\n");
return -1;
}
memset(&erase, 0, sizeof(erase));
memset(&oob_opts, 0, sizeof(oob_opts));
- erase.mtd = meminfo;
- erase.len = meminfo->erasesize;
+ erase.mtd = mtd;
+ erase.len = mtd->erasesize;
erase.addr = opts->offset;
- erase_length = lldiv(opts->length + meminfo->erasesize - 1,
- meminfo->erasesize);
+ erase_length = lldiv(opts->length + mtd->erasesize - 1,
+ mtd->erasesize);
cleanmarker.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
cleanmarker.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER);
kfree(chip->bbt);
}
chip->bbt = NULL;
+ chip->options &= ~NAND_BBT_SCANNED;
}
for (erased_length = 0;
erased_length < erase_length;
- erase.addr += meminfo->erasesize) {
+ erase.addr += mtd->erasesize) {
WATCHDOG_RESET();
- if (!opts->scrub && bbtest) {
- int ret = mtd_block_isbad(meminfo, erase.addr);
+ if (opts->lim && (erase.addr >= (opts->offset + opts->lim))) {
+ puts("Size of erase exceeds limit\n");
+ return -EFBIG;
+ }
+ if (!opts->scrub) {
+ int ret = mtd_block_isbad(mtd, erase.addr);
if (ret > 0) {
if (!opts->quiet)
printf("\rSkipping bad block at "
erased_length++;
- result = mtd_erase(meminfo, &erase);
+ result = mtd_erase(mtd, &erase);
if (result != 0) {
printf("\n%s: MTD Erase failure: %d\n",
mtd_device, result);
ops.ooboffs = 0;
ops.mode = MTD_OPS_AUTO_OOB;
- result = mtd_write_oob(meminfo,
- erase.addr,
- &ops);
+ result = mtd_write_oob(mtd, erase.addr, &ops);
if (result != 0) {
printf("\n%s: MTD writeoob failure: %d\n",
mtd_device, result);
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
*****************************************************************************/
{
int ret = 0;
int status;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
/* select the NAND device */
chip->select_chip(mtd, 0);
int ret = 0;
int chipnr;
int page;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
/* select the NAND device */
chipnr = (int)(offset >> chip->chip_shift);
* @param mtd nand mtd instance
* @param start start byte address
* @param length number of bytes to unlock (must be a multiple of
- * page size nand->writesize)
+ * page size mtd->writesize)
* @param allexcept if set, unlock everything not selected
*
* @return 0 on success, -1 in case of error
int chipnr;
int status;
int page;
- struct nand_chip *chip = mtd->priv;
+ struct nand_chip *chip = mtd_to_nand(mtd);
- 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 */
* Check if there are any bad blocks, and whether length including bad
* blocks fits into device
*
- * @param nand NAND device
+ * @param mtd nand mtd instance
* @param offset offset in flash
* @param length image length
* @param used length of flash needed for the requested length
* 1 if the image fits, but there are bad blocks
* -1 if the image does not fit
*/
-static int check_skip_len(nand_info_t *nand, loff_t offset, size_t length,
- size_t *used)
+static int check_skip_len(struct mtd_info *mtd, loff_t offset, size_t length,
+ size_t *used)
{
size_t len_excl_bad = 0;
int ret = 0;
size_t block_len, block_off;
loff_t block_start;
- if (offset >= nand->size)
+ if (offset >= mtd->size)
return -1;
- block_start = offset & ~(loff_t)(nand->erasesize - 1);
- block_off = offset & (nand->erasesize - 1);
- block_len = nand->erasesize - block_off;
+ block_start = offset & ~(loff_t)(mtd->erasesize - 1);
+ block_off = offset & (mtd->erasesize - 1);
+ block_len = mtd->erasesize - block_off;
- if (!nand_block_isbad(nand, block_start))
+ if (!nand_block_isbad(mtd, block_start))
len_excl_bad += block_len;
else
ret = 1;
}
#ifdef CONFIG_CMD_NAND_TRIMFFS
-static size_t drop_ffs(const nand_info_t *nand, const u_char *buf,
+static size_t drop_ffs(const struct mtd_info *mtd, const u_char *buf,
const size_t *len)
{
size_t l = *len;
/* The resulting length must be aligned to the minimum flash I/O size */
l = i + 1;
- l = (l + nand->writesize - 1) / nand->writesize;
- l *= nand->writesize;
+ l = (l + mtd->writesize - 1) / mtd->writesize;
+ l *= mtd->writesize;
/*
* since the input length may be unaligned, prevent access past the end
}
#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 mtd nand mtd instance
+ * @param ops MTD operations, including data to verify
+ * @param ofs offset in flash
+ * @return 0 in case of success
+ */
+int nand_verify_page_oob(struct mtd_info *mtd, struct mtd_oob_ops *ops,
+ loff_t ofs)
+{
+ int rval;
+ struct mtd_oob_ops vops;
+ size_t verlen = mtd->writesize + mtd->oobsize;
+
+ memcpy(&vops, ops, sizeof(vops));
+
+ vops.datbuf = memalign(ARCH_DMA_MINALIGN, verlen);
+
+ if (!vops.datbuf)
+ return -ENOMEM;
+
+ vops.oobbuf = vops.datbuf + mtd->writesize;
+
+ rval = mtd_read_oob(mtd, 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 mtd nand mtd instance
+ * @param ofs offset in flash
+ * @param len buffer length
+ * @param buf buffer to read from
+ * @return 0 in case of success
+ */
+int nand_verify(struct mtd_info *mtd, loff_t ofs, size_t len, u_char *buf)
+{
+ int rval = 0;
+ size_t verofs;
+ size_t verlen = mtd->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(mtd->writesize, (uint32_t)(ofs + len - verofs));
+ rval = nand_read(mtd, 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:
*
* beyond the limit we are passed, length is set to 0 and actual is set
* to the required length.
*
- * @param nand NAND device
+ * @param mtd nand mtd instance
* @param offset offset in flash
* @param length buffer length
* @param actual set to size required to write length worth of
* @param flags flags modifying the behaviour of the write to NAND
* @return 0 in case of success
*/
-int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
- size_t *actual, loff_t lim, u_char *buffer, int flags)
+int nand_write_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
+ size_t *actual, loff_t lim, u_char *buffer, int flags)
{
int rval = 0, blocksize;
size_t left_to_write = *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 = mtd->erasesize;
/*
* nand_write() handles unaligned, partial page writes.
* you should only start a block skipping access at a
* partition boundary). So don't try to handle that.
*/
- if ((offset & (nand->writesize - 1)) != 0) {
+ if ((offset & (mtd->writesize - 1)) != 0) {
printf("Attempt to write non page-aligned data\n");
*length = 0;
return -EINVAL;
}
- need_skip = check_skip_len(nand, offset, *length, &used_for_write);
+ need_skip = check_skip_len(mtd, offset, *length, &used_for_write);
if (actual)
*actual = used_for_write;
}
if (!need_skip && !(flags & WITH_DROP_FFS)) {
- rval = nand_write(nand, offset, length, buffer);
+ rval = nand_write(mtd, offset, length, buffer);
+
+ if ((flags & WITH_WR_VERIFY) && !rval)
+ rval = nand_verify(mtd, offset, *length, buffer);
+
if (rval == 0)
return 0;
}
while (left_to_write > 0) {
- size_t block_offset = offset & (nand->erasesize - 1);
+ size_t block_offset = offset & (mtd->erasesize - 1);
size_t write_size, truncated_write_size;
WATCHDOG_RESET();
- if (nand_block_isbad(nand, offset & ~(nand->erasesize - 1))) {
+ if (nand_block_isbad(mtd, offset & ~(mtd->erasesize - 1))) {
printf("Skip bad block 0x%08llx\n",
- offset & ~(nand->erasesize - 1));
- offset += nand->erasesize - block_offset;
+ offset & ~(mtd->erasesize - 1));
+ offset += mtd->erasesize - block_offset;
continue;
}
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(mtd, 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(mtd, offset, &truncated_write_size,
+ p_buffer);
+
+ if ((flags & WITH_WR_VERIFY) && !rval)
+ rval = nand_verify(mtd, 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",
* the limit we are passed, length is set to 0 and actual is set to the
* required length.
*
- * @param nand NAND device
+ * @param mtd nand mtd instance
* @param offset offset in flash
* @param length buffer length, on return holds number of read bytes
* @param actual set to size required to read length worth of buffer or 0
* @param buffer buffer to write to
* @return 0 in case of success
*/
-int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
- size_t *actual, loff_t lim, u_char *buffer)
+int nand_read_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
+ size_t *actual, loff_t lim, u_char *buffer)
{
int rval;
size_t left_to_read = *length;
u_char *p_buffer = buffer;
int need_skip;
- if ((offset & (nand->writesize - 1)) != 0) {
+ if ((offset & (mtd->writesize - 1)) != 0) {
printf("Attempt to read non page-aligned data\n");
*length = 0;
if (actual)
return -EINVAL;
}
- need_skip = check_skip_len(nand, offset, *length, &used_for_read);
+ need_skip = check_skip_len(mtd, offset, *length, &used_for_read);
if (actual)
*actual = used_for_read;
}
if (!need_skip) {
- rval = nand_read(nand, offset, length, buffer);
+ rval = nand_read(mtd, offset, length, buffer);
if (!rval || rval == -EUCLEAN)
return 0;
}
while (left_to_read > 0) {
- size_t block_offset = offset & (nand->erasesize - 1);
+ size_t block_offset = offset & (mtd->erasesize - 1);
size_t read_length;
WATCHDOG_RESET();
- if (nand_block_isbad(nand, offset & ~(nand->erasesize - 1))) {
+ if (nand_block_isbad(mtd, offset & ~(mtd->erasesize - 1))) {
printf("Skipping bad block 0x%08llx\n",
- offset & ~(nand->erasesize - 1));
- offset += nand->erasesize - block_offset;
+ offset & ~(mtd->erasesize - 1));
+ offset += mtd->erasesize - block_offset;
continue;
}
- if (left_to_read < (nand->erasesize - block_offset))
+ if (left_to_read < (mtd->erasesize - block_offset))
read_length = left_to_read;
else
- read_length = nand->erasesize - block_offset;
+ read_length = mtd->erasesize - block_offset;
- rval = nand_read(nand, offset, &read_length, p_buffer);
+ rval = nand_read(mtd, offset, &read_length, p_buffer);
if (rval && rval != -EUCLEAN) {
printf("NAND read from offset %llx failed %d\n",
offset, rval);
* This is useful to determine if a block that caused a write error is still
* good or should be marked as bad.
*
- * @param nand NAND device
+ * @param mtd nand mtd instance
* @param offset offset in flash
* @return 0 if the block is still good
*/
-int nand_torture(nand_info_t *nand, loff_t offset)
+int nand_torture(struct mtd_info *mtd, loff_t offset)
{
u_char patterns[] = {0xa5, 0x5a, 0x00};
struct erase_info instr = {
- .mtd = nand,
+ .mtd = mtd,
.addr = offset,
- .len = nand->erasesize,
+ .len = mtd->erasesize,
};
size_t retlen;
int err, ret = -1, i, patt_count;
u_char *buf;
- if ((offset & (nand->erasesize - 1)) != 0) {
+ if ((offset & (mtd->erasesize - 1)) != 0) {
puts("Attempt to torture a block at a non block-aligned offset\n");
return -EINVAL;
}
- if (offset + nand->erasesize > nand->size) {
+ if (offset + mtd->erasesize > mtd->size) {
puts("Attempt to torture a block outside the flash area\n");
return -EINVAL;
}
patt_count = ARRAY_SIZE(patterns);
- buf = malloc(nand->erasesize);
+ buf = malloc_cache_aligned(mtd->erasesize);
if (buf == NULL) {
puts("Out of memory for erase block buffer\n");
return -ENOMEM;
}
for (i = 0; i < patt_count; i++) {
- err = nand->erase(nand, &instr);
+ err = mtd_erase(mtd, &instr);
if (err) {
printf("%s: erase() failed for block at 0x%llx: %d\n",
- nand->name, instr.addr, err);
+ mtd->name, instr.addr, err);
goto out;
}
/* Make sure the block contains only 0xff bytes */
- err = nand->read(nand, offset, nand->erasesize, &retlen, buf);
- if ((err && err != -EUCLEAN) || retlen != nand->erasesize) {
+ err = mtd_read(mtd, offset, mtd->erasesize, &retlen, buf);
+ if ((err && err != -EUCLEAN) || retlen != mtd->erasesize) {
printf("%s: read() failed for block at 0x%llx: %d\n",
- nand->name, instr.addr, err);
+ mtd->name, instr.addr, err);
goto out;
}
- err = check_pattern(buf, 0xff, nand->erasesize);
+ err = check_pattern(buf, 0xff, mtd->erasesize);
if (!err) {
printf("Erased block at 0x%llx, but a non-0xff byte was found\n",
offset);
}
/* Write a pattern and check it */
- memset(buf, patterns[i], nand->erasesize);
- err = nand->write(nand, offset, nand->erasesize, &retlen, buf);
- if (err || retlen != nand->erasesize) {
+ memset(buf, patterns[i], mtd->erasesize);
+ err = mtd_write(mtd, offset, mtd->erasesize, &retlen, buf);
+ if (err || retlen != mtd->erasesize) {
printf("%s: write() failed for block at 0x%llx: %d\n",
- nand->name, instr.addr, err);
+ mtd->name, instr.addr, err);
goto out;
}
- err = nand->read(nand, offset, nand->erasesize, &retlen, buf);
- if ((err && err != -EUCLEAN) || retlen != nand->erasesize) {
+ err = mtd_read(mtd, offset, mtd->erasesize, &retlen, buf);
+ if ((err && err != -EUCLEAN) || retlen != mtd->erasesize) {
printf("%s: read() failed for block at 0x%llx: %d\n",
- nand->name, instr.addr, err);
+ mtd->name, instr.addr, err);
goto out;
}
- err = check_pattern(buf, patterns[i], nand->erasesize);
+ err = check_pattern(buf, patterns[i], mtd->erasesize);
if (!err) {
printf("Pattern 0x%.2x checking failed for block at "
"0x%llx\n", patterns[i], offset);
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