* 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.
+ *
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
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;
WATCHDOG_RESET();
- if (!opts->scrub && bbtest) {
- int ret = meminfo->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(meminfo, erase.addr);
if (ret > 0) {
if (!opts->quiet)
printf("\rSkipping bad block at "
erased_length++;
- result = meminfo->erase(meminfo, &erase);
+ result = mtd_erase(meminfo, &erase);
if (result != 0) {
printf("\n%s: MTD Erase failure: %d\n",
mtd_device, result);
/* format for JFFS2 ? */
if (opts->jffs2 && chip->ecc.layout->oobavail >= 8) {
- chip->ops.ooblen = 8;
- chip->ops.datbuf = NULL;
- chip->ops.oobbuf = (uint8_t *)&cleanmarker;
- chip->ops.ooboffs = 0;
- chip->ops.mode = MTD_OOB_AUTO;
-
- result = meminfo->write_oob(meminfo,
- erase.addr,
- &chip->ops);
+ struct mtd_oob_ops ops;
+ ops.ooblen = 8;
+ ops.datbuf = NULL;
+ ops.oobbuf = (uint8_t *)&cleanmarker;
+ ops.ooboffs = 0;
+ ops.mode = MTD_OPS_AUTO_OOB;
+
+ result = mtd_write_oob(meminfo,
+ erase.addr,
+ &ops);
if (result != 0) {
printf("\n%s: MTD writeoob failure: %d\n",
mtd_device, result);
/* select the NAND device */
chip->select_chip(mtd, 0);
+ /* check the Lock Tight Status */
+ chip->cmdfunc(mtd, NAND_CMD_LOCK_STATUS, -1, 0);
+ if (chip->read_byte(mtd) & NAND_LOCK_STATUS_TIGHT) {
+ printf("nand_lock: Device is locked tight!\n");
+ ret = -1;
+ goto out;
+ }
+
chip->cmdfunc(mtd,
(tight ? NAND_CMD_LOCK_TIGHT : NAND_CMD_LOCK),
-1, -1);
ret = -1;
}
+ out:
/* de-select the NAND device */
chip->select_chip(mtd, -1);
return ret;
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 */
goto out;
}
+ /* check the Lock Tight Status */
+ page = (int)(start >> chip->page_shift);
+ chip->cmdfunc(mtd, NAND_CMD_LOCK_STATUS, -1, page & chip->pagemask);
+ if (chip->read_byte(mtd) & NAND_LOCK_STATUS_TIGHT) {
+ printf("nand_unlock: Device is locked tight!\n");
+ ret = -1;
+ goto out;
+ }
+
if ((start & (mtd->erasesize - 1)) != 0) {
printf("nand_unlock: Start address must be beginning of "
"nand block!\n");
length -= mtd->erasesize;
/* submit address of first page to unlock */
- page = (int)(start >> chip->page_shift);
chip->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & chip->pagemask);
/* submit ADDRESS of LAST page to unlock */
* @param nand NAND device
* @param offset offset in flash
* @param length image length
+ * @param used length of flash needed for the requested length
* @return 0 if the image fits and there are no bad blocks
* 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)
+static int check_skip_len(nand_info_t *nand, loff_t offset, size_t length,
+ size_t *used)
{
size_t len_excl_bad = 0;
int ret = 0;
ret = 1;
offset += block_len;
+ *used += block_len;
}
+ /* If the length is not a multiple of block_len, adjust. */
+ if (len_excl_bad > length)
+ *used -= (len_excl_bad - length);
+
return ret;
}
static size_t drop_ffs(const nand_info_t *nand, const u_char *buf,
const size_t *len)
{
- size_t i, l = *len;
+ size_t l = *len;
+ ssize_t i;
for (i = l - 1; i >= 0; i--)
if (buf[i] != 0xFF)
* Write image to NAND flash.
* Blocks that are marked bad are skipped and the is written to the next
* block instead as long as the image is short enough to fit even after
- * skipping the bad blocks.
+ * skipping the bad blocks. Due to bad blocks we may not be able to
+ * perform the requested write. In the case where the write would
+ * extend beyond the end of the NAND device, both length and actual (if
+ * not NULL) are set to 0. In the case where the write would extend
+ * beyond the limit we are passed, length is set to 0 and actual is set
+ * to the required length.
*
* @param nand NAND device
* @param offset offset in flash
* @param length buffer length
+ * @param actual set to size required to write length worth of
+ * buffer or 0 on error, if not NULL
+ * @param lim maximum size that actual may be in order to not
+ * exceed the buffer
* @param buffer buffer to read from
* @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,
- u_char *buffer, int flags)
+ size_t *actual, loff_t lim, u_char *buffer, int flags)
{
int rval = 0, blocksize;
size_t left_to_write = *length;
+ size_t used_for_write = 0;
u_char *p_buffer = buffer;
int need_skip;
+ if (actual)
+ *actual = 0;
+
#ifdef CONFIG_CMD_NAND_YAFFS
if (flags & WITH_YAFFS_OOB) {
if (flags & ~WITH_YAFFS_OOB)
return -EINVAL;
}
- need_skip = check_skip_len(nand, offset, *length);
+ need_skip = check_skip_len(nand, offset, *length, &used_for_write);
+
+ if (actual)
+ *actual = used_for_write;
+
if (need_skip < 0) {
printf("Attempt to write outside the flash area\n");
*length = 0;
return -EINVAL;
}
+ if (used_for_write > lim) {
+ puts("Size of write exceeds partition or device limit\n");
+ *length = 0;
+ return -EFBIG;
+ }
+
if (!need_skip && !(flags & WITH_DROP_FFS)) {
rval = nand_write(nand, offset, length, buffer);
if (rval == 0)
ops.len = pagesize;
ops.ooblen = nand->oobsize;
- ops.mode = MTD_OOB_AUTO;
+ ops.mode = MTD_OPS_AUTO_OOB;
ops.ooboffs = 0;
pages = write_size / pagesize_oob;
ops.datbuf = p_buffer;
ops.oobbuf = ops.datbuf + pagesize;
- rval = nand->write_oob(nand, offset, &ops);
+ rval = mtd_write_oob(nand, offset, &ops);
if (rval != 0)
break;
*
* Read image from NAND flash.
* Blocks that are marked bad are skipped and the next block is read
- * instead as long as the image is short enough to fit even after skipping the
- * bad blocks.
+ * instead as long as the image is short enough to fit even after
+ * skipping the bad blocks. Due to bad blocks we may not be able to
+ * perform the requested read. In the case where the read would extend
+ * beyond the end of the NAND device, both length and actual (if not
+ * NULL) are set to 0. In the case where the read would extend beyond
+ * the limit we are passed, length is set to 0 and actual is set to the
+ * required length.
*
* @param nand NAND device
* @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
+ * on error, if not NULL
+ * @param lim maximum size that actual may be in order to not exceed the
+ * buffer
* @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,
- u_char *buffer)
+ size_t *actual, loff_t lim, u_char *buffer)
{
int rval;
size_t left_to_read = *length;
+ size_t used_for_read = 0;
u_char *p_buffer = buffer;
int need_skip;
if ((offset & (nand->writesize - 1)) != 0) {
printf("Attempt to read non page-aligned data\n");
*length = 0;
+ if (actual)
+ *actual = 0;
return -EINVAL;
}
- need_skip = check_skip_len(nand, offset, *length);
+ need_skip = check_skip_len(nand, offset, *length, &used_for_read);
+
+ if (actual)
+ *actual = used_for_read;
+
if (need_skip < 0) {
printf("Attempt to read outside the flash area\n");
*length = 0;
return -EINVAL;
}
+ if (used_for_read > lim) {
+ puts("Size of read exceeds partition or device limit\n");
+ *length = 0;
+ return -EFBIG;
+ }
+
if (!need_skip) {
rval = nand_read(nand, offset, length, buffer);
if (!rval || rval == -EUCLEAN)
projects / karo-tx-uboot.git / blobdiff