* nandwrite.c by Steven J. Hill (sjhill@realitydiluted.com)
* and Thomas Gleixner (tglx@linutronix.de)
*
+ * 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.
*
* 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>
-
-#if defined(CONFIG_CMD_NAND) && !defined(CFG_NAND_LEGACY)
-
#include <command.h>
#include <watchdog.h>
#include <malloc.h>
#include <div64.h>
-
#include <asm/errno.h>
#include <linux/mtd/mtd.h>
#include <nand.h>
#include <jffs2/jffs2.h>
-typedef struct erase_info erase_info_t;
-typedef struct mtd_info mtd_info_t;
+typedef struct erase_info erase_info_t;
+typedef struct mtd_info mtd_info_t;
/* support only for native endian JFFS2 */
#define cpu_to_je16(x) (x)
#define cpu_to_je32(x) (x)
-/*****************************************************************************/
-static int nand_block_bad_scrub(struct mtd_info *mtd, loff_t ofs, int getchip)
-{
- return 0;
-}
-
/**
* nand_erase_opts: - erase NAND flash with support for various options
- * (jffs2 formating)
+ * (jffs2 formatting)
*
* @param meminfo NAND device to erase
* @param opts options, @see struct nand_erase_options
{
struct jffs2_unknown_node cleanmarker;
erase_info_t erase;
- ulong erase_length;
+ unsigned long erase_length, erased_length; /* in blocks */
int bbtest = 1;
int result;
int percent_complete = -1;
- int (*nand_block_bad_old)(struct mtd_info *, loff_t, int) = NULL;
const char *mtd_device = meminfo->name;
struct mtd_oob_ops oob_opts;
struct nand_chip *chip = meminfo->priv;
- uint8_t buf[64];
- memset(buf, 0, sizeof(buf));
+ if ((opts->offset & (meminfo->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.addr = opts->offset;
- erase_length = opts->length;
-
+ erase_length = lldiv(opts->length + meminfo->erasesize - 1,
+ meminfo->erasesize);
- cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
- cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
+ cleanmarker.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+ cleanmarker.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER);
cleanmarker.totlen = cpu_to_je32(8);
- cleanmarker.hdr_crc = cpu_to_je32(
- crc32_no_comp(0, (unsigned char *) &cleanmarker,
- sizeof(struct jffs2_unknown_node) - 4));
/* scrub option allows to erase badblock. To prevent internal
* check from erase() method, set block check method to dummy
* and disable bad block table while erasing.
*/
if (opts->scrub) {
- struct nand_chip *priv_nand = meminfo->priv;
-
- nand_block_bad_old = priv_nand->block_bad;
- priv_nand->block_bad = nand_block_bad_scrub;
- /* we don't need the bad block table anymore...
+ erase.scrub = opts->scrub;
+ /*
+ * We don't need the bad block table anymore...
* after scrub, there are no bad blocks left!
*/
- if (priv_nand->bbt) {
- kfree(priv_nand->bbt);
+ if (chip->bbt) {
+ kfree(chip->bbt);
}
- priv_nand->bbt = NULL;
- }
-
- if (erase_length < meminfo->erasesize) {
- printf("Warning: Erase size 0x%08lx smaller than one " \
- "erase block 0x%08x\n",erase_length, meminfo->erasesize);
- printf(" Erasing 0x%08x instead\n", meminfo->erasesize);
- erase_length = meminfo->erasesize;
+ chip->bbt = NULL;
}
- for (;
- erase.addr < opts->offset + erase_length;
+ for (erased_length = 0;
+ erased_length < erase_length;
erase.addr += meminfo->erasesize) {
-
- WATCHDOG_RESET ();
+
+ WATCHDOG_RESET();
if (!opts->scrub && bbtest) {
int ret = meminfo->block_isbad(meminfo, erase.addr);
if (ret > 0) {
if (!opts->quiet)
printf("\rSkipping bad block at "
- "0x%08x "
+ "0x%08llx "
" \n",
erase.addr);
+
+ if (!opts->spread)
+ erased_length++;
+
continue;
} else if (ret < 0) {
}
}
+ erased_length++;
+
result = meminfo->erase(meminfo, &erase);
if (result != 0) {
printf("\n%s: MTD Erase failure: %d\n",
}
/* format for JFFS2 ? */
- if (opts->jffs2) {
-
- chip->ops.len = chip->ops.ooblen = 64;
+ if (opts->jffs2 && chip->ecc.layout->oobavail >= 8) {
+ chip->ops.ooblen = 8;
chip->ops.datbuf = NULL;
- chip->ops.oobbuf = buf;
- chip->ops.ooboffs = chip->badblockpos & ~0x01;
-
+ chip->ops.oobbuf = (uint8_t *)&cleanmarker;
+ chip->ops.ooboffs = 0;
+ chip->ops.mode = MTD_OOB_AUTO;
+
result = meminfo->write_oob(meminfo,
- erase.addr + meminfo->oobsize,
- &chip->ops);
+ erase.addr,
+ &chip->ops);
if (result != 0) {
printf("\n%s: MTD writeoob failure: %d\n",
- mtd_device, result);
+ mtd_device, result);
continue;
}
- else
- printf("%s: MTD writeoob at 0x%08x\n",mtd_device, erase.addr + meminfo->oobsize );
}
if (!opts->quiet) {
- unsigned long long n =(unsigned long long)
- (erase.addr + meminfo->erasesize - opts->offset)
- * 100;
+ unsigned long long n = erased_length * 100ULL;
int percent;
do_div(n, erase_length);
if (percent != percent_complete) {
percent_complete = percent;
- printf("\rErasing at 0x%x -- %3d%% complete.",
- erase.addr, percent);
+ printf("\rErasing at 0x%llx -- %3d%% complete.",
+ erase.addr, percent);
if (opts->jffs2 && result == 0)
- printf(" Cleanmarker written at 0x%x.",
- erase.addr);
+ printf(" Cleanmarker written at 0x%llx.",
+ erase.addr);
}
}
}
if (!opts->quiet)
printf("\n");
- if (nand_block_bad_old) {
- struct nand_chip *priv_nand = meminfo->priv;
-
- priv_nand->block_bad = nand_block_bad_old;
- priv_nand->scan_bbt(meminfo);
- }
+ if (opts->scrub)
+ chip->scan_bbt(meminfo);
return 0;
}
-/* XXX U-BOOT XXX */
-#if 0
-
-#define MAX_PAGE_SIZE 2048
-#define MAX_OOB_SIZE 64
-
-/*
- * buffer array used for writing data
- */
-static unsigned char data_buf[MAX_PAGE_SIZE];
-static unsigned char oob_buf[MAX_OOB_SIZE];
-
-/* OOB layouts to pass into the kernel as default */
-static struct nand_ecclayout none_ecclayout = {
- .useecc = MTD_NANDECC_OFF,
-};
-
-static struct nand_ecclayout jffs2_ecclayout = {
- .useecc = MTD_NANDECC_PLACE,
- .eccbytes = 6,
- .eccpos = { 0, 1, 2, 3, 6, 7 }
-};
-
-static struct nand_ecclayout yaffs_ecclayout = {
- .useecc = MTD_NANDECC_PLACE,
- .eccbytes = 6,
- .eccpos = { 8, 9, 10, 13, 14, 15}
-};
-
-static struct nand_ecclayout autoplace_ecclayout = {
- .useecc = MTD_NANDECC_AUTOPLACE
-};
-#endif
+#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
+/******************************************************************************
+ * Support for locking / unlocking operations of some NAND devices
+ *****************************************************************************/
/**
- * nand_fill_oob - [Internal] Transfer client buffer to oob
- * @chip: nand chip structure
- * @oob: oob data buffer
- * @ops: oob ops structure
- *
- * Copied from nand_base.c
- */
-static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob,
- struct mtd_oob_ops *ops)
-{
- size_t len = ops->ooblen;
-
- switch(ops->mode) {
-
- case MTD_OOB_PLACE:
- case MTD_OOB_RAW:
- memcpy(chip->oob_poi + ops->ooboffs, oob, len);
- return oob + len;
-
- case MTD_OOB_AUTO: {
- struct nand_oobfree *free = chip->ecc.layout->oobfree;
- uint32_t boffs = 0, woffs = ops->ooboffs;
- size_t bytes = 0;
-
- for(; free->length && len; free++, len -= bytes) {
- /* Write request not from offset 0 ? */
- if (unlikely(woffs)) {
- if (woffs >= free->length) {
- woffs -= free->length;
- continue;
- }
- boffs = free->offset + woffs;
- bytes = min_t(size_t, len,
- (free->length - woffs));
- woffs = 0;
- } else {
- bytes = min_t(size_t, len, free->length);
- boffs = free->offset;
- }
- memcpy(chip->oob_poi + boffs, oob, bytes);
- oob += bytes;
- }
- return oob;
- }
- default:
- BUG();
- }
- return NULL;
-}
-
-#define NOTALIGNED(x) (x & (chip->subpagesize - 1)) != 0
-
-
-/* copied from nand_base.c: nand_do_write_ops()
- * Only very small changes
+ * nand_lock: Set all pages of NAND flash chip to the LOCK or LOCK-TIGHT
+ * state
+ *
+ * @param mtd nand mtd instance
+ * @param tight bring device in lock tight mode
+ *
+ * @return 0 on success, -1 in case of error
+ *
+ * The lock / lock-tight command only applies to the whole chip. To get some
+ * parts of the chip lock and others unlocked use the following sequence:
+ *
+ * - Lock all pages of the chip using nand_lock(mtd, 0) (or the lockpre pin)
+ * - Call nand_unlock() once for each consecutive area to be unlocked
+ * - If desired: Bring the chip to the lock-tight state using nand_lock(mtd, 1)
+ *
+ * If the device is in lock-tight state software can't change the
+ * current active lock/unlock state of all pages. nand_lock() / nand_unlock()
+ * calls will fail. It is only posible to leave lock-tight state by
+ * an hardware signal (low pulse on _WP pin) or by power down.
*/
-int nand_write_opts(nand_info_t *mtd, loff_t to, mtd_oob_ops_t *ops)
+int nand_lock(struct mtd_info *mtd, int tight)
{
- int chipnr, realpage, page, blockmask, column;
+ int ret = 0;
+ int status;
struct nand_chip *chip = mtd->priv;
- uint32_t writelen = ops->len;
- uint8_t *oob = ops->oobbuf;
- uint8_t *buf = ops->datbuf;
- int ret, subpage;
-
- ops->retlen = 0;
- if (!writelen)
- return 0;
-
- printk("nand_write_opts: to: 0x%08x, ops->len: 0x%08x\n", to, ops->len);
-
- /* reject writes, which are not page aligned */
- if (NOTALIGNED(to) || NOTALIGNED(ops->len)) {
- printk(KERN_NOTICE "nand_write: "
- "Attempt to write not page aligned data\n");
- return -EINVAL;
- }
-
- column = to & (mtd->writesize - 1);
- subpage = column || (writelen & (mtd->writesize - 1));
-
- if (subpage && oob) {
- printk(KERN_NOTICE "nand_write: "
- "Attempt to write oob to subpage\n");
- return -EINVAL;
- }
-
- chipnr = (int)(to >> chip->chip_shift);
- chip->select_chip(mtd, chipnr);
-
- /* XXX U-BOOT XXX */
-#if 0
- /* Check, if it is write protected */
- if (nand_check_wp(mtd))
- return -EIO;
-#endif
-
- realpage = (int)(to >> chip->page_shift);
- page = realpage & chip->pagemask;
- blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
- /* Invalidate the page cache, when we write to the cached page */
- if (to <= (chip->pagebuf << chip->page_shift) &&
- (chip->pagebuf << chip->page_shift) < (to + ops->len))
- chip->pagebuf = -1;
+ /* select the NAND device */
+ chip->select_chip(mtd, 0);
- /* If we're not given explicit OOB data, let it be 0xFF */
- if (likely(!oob)) {
- printf("!oob, writing %d bytes with 0xff to chip->oob_poi (0x%08x)\n", mtd->oobsize, chip->oob_poi);
- memset(chip->oob_poi, 0xff, mtd->oobsize);
+ /* 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;
}
- while(1) {
- int bytes = mtd->writesize;
- int cached = writelen > bytes && page != blockmask;
- uint8_t *wbuf = buf;
-
- /* Partial page write ? */
- if (unlikely(column || writelen < (mtd->writesize - 1))) {
- cached = 0;
- bytes = min_t(int, bytes - column, (int) writelen);
- chip->pagebuf = -1;
- memset(chip->buffers->databuf, 0xff, mtd->writesize);
- memcpy(&chip->buffers->databuf[column], buf, bytes);
- wbuf = chip->buffers->databuf;
- }
-
- if (unlikely(oob))
- oob = nand_fill_oob(chip, oob, ops);
-
- ret = chip->write_page(mtd, chip, wbuf, page, cached,
- (ops->mode == MTD_OOB_RAW));
- if (ret)
- break;
-
- writelen -= bytes;
- if (!writelen)
- break;
+ chip->cmdfunc(mtd,
+ (tight ? NAND_CMD_LOCK_TIGHT : NAND_CMD_LOCK),
+ -1, -1);
- column = 0;
- buf += bytes;
- realpage++;
+ /* call wait ready function */
+ status = chip->waitfunc(mtd, chip);
- page = realpage & chip->pagemask;
- /* Check, if we cross a chip boundary */
- if (!page) {
- chipnr++;
- chip->select_chip(mtd, -1);
- chip->select_chip(mtd, chipnr);
- }
+ /* see if device thinks it succeeded */
+ if (status & 0x01) {
+ ret = -1;
}
- ops->retlen = ops->len - writelen;
- if (unlikely(oob))
- ops->oobretlen = ops->ooblen;
+ out:
+ /* de-select the NAND device */
+ chip->select_chip(mtd, -1);
return ret;
}
-/* XXX U-BOOT XXX */
-#if 0
/**
- * nand_write_opts: - write image to NAND flash with support for various options
+ * nand_get_lock_status: - query current lock state from one page of NAND
+ * flash
*
- * @param meminfo NAND device to erase
- * @param opts write options (@see nand_write_options)
- * @return 0 in case of success
+ * @param mtd nand mtd instance
+ * @param offset page address to query (must be page-aligned!)
+ *
+ * @return -1 in case of error
+ * >0 lock status:
+ * bitfield with the following combinations:
+ * NAND_LOCK_STATUS_TIGHT: page in tight state
+ * NAND_LOCK_STATUS_UNLOCK: page unlocked
*
- * This code is ported from nandwrite.c from Linux mtd utils by
- * Steven J. Hill and Thomas Gleixner.
*/
-int nand_write_opts(nand_info_t *meminfo, const nand_write_options_t *opts)
+int nand_get_lock_status(struct mtd_info *mtd, loff_t offset)
{
- int imglen = 0;
- int pagelen;
- int baderaseblock;
- int blockstart = -1;
- loff_t offs;
- int readlen;
- int ecclayoutchanged = 0;
- int percent_complete = -1;
- struct nand_ecclayout old_ecclayout;
- ulong mtdoffset = opts->offset;
- ulong erasesize_blockalign;
- u_char *buffer = opts->buffer;
- size_t written;
- int result;
+ int ret = 0;
+ int chipnr;
+ int page;
+ struct nand_chip *chip = mtd->priv;
- if (opts->pad && opts->writeoob) {
- printf("Can't pad when oob data is present.\n");
- return -1;
- }
+ /* select the NAND device */
+ chipnr = (int)(offset >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
- /* set erasesize to specified number of blocks - to match
- * jffs2 (virtual) block size */
- if (opts->blockalign == 0) {
- erasesize_blockalign = meminfo->erasesize;
- } else {
- erasesize_blockalign = meminfo->erasesize * opts->blockalign;
- }
- /* make sure device page sizes are valid */
- if (!(meminfo->oobsize == 16 && meminfo->writesize == 512)
- && !(meminfo->oobsize == 8 && meminfo->writesize == 256)
- && !(meminfo->oobsize == 64 && meminfo->writesize == 2048)) {
- printf("Unknown flash (not normal NAND)\n");
- return -1;
+ if ((offset & (mtd->writesize - 1)) != 0) {
+ printf("nand_get_lock_status: "
+ "Start address must be beginning of "
+ "nand page!\n");
+ ret = -1;
+ goto out;
}
- /* read the current oob info */
- memcpy(&old_ecclayout, &meminfo->ecclayout, sizeof(old_ecclayout));
+ /* check the Lock Status */
+ page = (int)(offset >> chip->page_shift);
+ chip->cmdfunc(mtd, NAND_CMD_LOCK_STATUS, -1, page & chip->pagemask);
- /* write without ecc? */
- if (opts->noecc) {
- memcpy(&meminfo->ecclayout, &none_ecclayout,
- sizeof(meminfo->ecclayout));
- ecclayoutchanged = 1;
- }
+ ret = chip->read_byte(mtd) & (NAND_LOCK_STATUS_TIGHT
+ | NAND_LOCK_STATUS_UNLOCK);
- /* autoplace ECC? */
- if (opts->autoplace && (old_ecclayout.useecc != MTD_NANDECC_AUTOPLACE)) {
+ out:
+ /* de-select the NAND device */
+ chip->select_chip(mtd, -1);
+ return ret;
+}
- memcpy(&meminfo->ecclayout, &autoplace_ecclayout,
- sizeof(meminfo->ecclayout));
- ecclayoutchanged = 1;
- }
+/**
+ * nand_unlock: - Unlock area of NAND pages
+ * only one consecutive area can be unlocked at one time!
+ *
+ * @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)
+ * @param allexcept if set, unlock everything not selected
+ *
+ * @return 0 on success, -1 in case of error
+ */
+int nand_unlock(struct mtd_info *mtd, loff_t start, size_t length,
+ int allexcept)
+{
+ int ret = 0;
+ int chipnr;
+ int status;
+ int page;
+ struct nand_chip *chip = mtd->priv;
- /* force OOB layout for jffs2 or yaffs? */
- if (opts->forcejffs2 || opts->forceyaffs) {
- struct nand_ecclayout *oobsel =
- opts->forcejffs2 ? &jffs2_ecclayout : &yaffs_ecclayout;
+ debug("nand_unlock%s: start: %08llx, length: %d!\n",
+ allexcept ? " (allexcept)" : "", start, length);
- if (meminfo->oobsize == 8) {
- if (opts->forceyaffs) {
- printf("YAFSS cannot operate on "
- "256 Byte page size\n");
- goto restoreoob;
- }
- /* Adjust number of ecc bytes */
- jffs2_ecclayout.eccbytes = 3;
- }
+ /* select the NAND device */
+ chipnr = (int)(start >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
- memcpy(&meminfo->ecclayout, oobsel, sizeof(meminfo->ecclayout));
+ /* check the WP bit */
+ chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
+ if (!(chip->read_byte(mtd) & NAND_STATUS_WP)) {
+ printf("nand_unlock: Device is write protected!\n");
+ ret = -1;
+ goto out;
}
- /* get image length */
- imglen = opts->length;
- pagelen = meminfo->writesize
- + ((opts->writeoob != 0) ? meminfo->oobsize : 0);
+ /* 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;
+ }
- /* check, if file is pagealigned */
- if ((!opts->pad) && ((imglen % pagelen) != 0)) {
- printf("Input block length is not page aligned\n");
- goto restoreoob;
+ if ((start & (mtd->erasesize - 1)) != 0) {
+ printf("nand_unlock: Start address must be beginning of "
+ "nand block!\n");
+ ret = -1;
+ goto out;
}
- /* check, if length fits into device */
- if (((imglen / pagelen) * meminfo->writesize)
- > (meminfo->size - opts->offset)) {
- printf("Image %d bytes, NAND page %d bytes, "
- "OOB area %u bytes, device size %u bytes\n",
- imglen, pagelen, meminfo->writesize, meminfo->size);
- printf("Input block does not fit into device\n");
- goto restoreoob;
+ if (length == 0 || (length & (mtd->erasesize - 1)) != 0) {
+ printf("nand_unlock: Length must be a multiple of nand block "
+ "size %08x!\n", mtd->erasesize);
+ ret = -1;
+ goto out;
}
- if (!opts->quiet)
- printf("\n");
+ /*
+ * Set length so that the last address is set to the
+ * starting address of the last block
+ */
+ length -= mtd->erasesize;
- /* get data from input and write to the device */
- while (imglen && (mtdoffset < meminfo->size)) {
+ /* submit address of first page to unlock */
+ chip->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & chip->pagemask);
- WATCHDOG_RESET ();
+ /* submit ADDRESS of LAST page to unlock */
+ page += (int)(length >> chip->page_shift);
- /*
- * new eraseblock, check for bad block(s). Stay in the
- * loop to be sure if the offset changes because of
- * a bad block, that the next block that will be
- * written to is also checked. Thus avoiding errors if
- * the block(s) after the skipped block(s) is also bad
- * (number of blocks depending on the blockalign
- */
- while (blockstart != (mtdoffset & (~erasesize_blockalign+1))) {
- blockstart = mtdoffset & (~erasesize_blockalign+1);
- offs = blockstart;
- baderaseblock = 0;
-
- /* check all the blocks in an erase block for
- * bad blocks */
- do {
- int ret = meminfo->block_isbad(meminfo, offs);
-
- if (ret < 0) {
- printf("Bad block check failed\n");
- goto restoreoob;
- }
- if (ret == 1) {
- baderaseblock = 1;
- if (!opts->quiet)
- printf("\rBad block at 0x%lx "
- "in erase block from "
- "0x%x will be skipped\n",
- (long) offs,
- blockstart);
- }
-
- if (baderaseblock) {
- mtdoffset = blockstart
- + erasesize_blockalign;
- }
- offs += erasesize_blockalign
- / opts->blockalign;
- } while (offs < blockstart + erasesize_blockalign);
- }
+ /*
+ * Page addresses for unlocking are supposed to be block-aligned.
+ * At least some NAND chips use the low bit to indicate that the
+ * page range should be inverted.
+ */
+ if (allexcept)
+ page |= 1;
- readlen = meminfo->writesize;
- if (opts->pad && (imglen < readlen)) {
- readlen = imglen;
- memset(data_buf + readlen, 0xff,
- meminfo->writesize - readlen);
- }
+ chip->cmdfunc(mtd, NAND_CMD_UNLOCK2, -1, page & chip->pagemask);
- /* read page data from input memory buffer */
- memcpy(data_buf, buffer, readlen);
- buffer += readlen;
+ /* call wait ready function */
+ status = chip->waitfunc(mtd, chip);
+ /* see if device thinks it succeeded */
+ if (status & 0x01) {
+ /* there was an error */
+ ret = -1;
+ goto out;
+ }
- if (opts->writeoob) {
- /* read OOB data from input memory block, exit
- * on failure */
- memcpy(oob_buf, buffer, meminfo->oobsize);
- buffer += meminfo->oobsize;
+ out:
+ /* de-select the NAND device */
+ chip->select_chip(mtd, -1);
+ return ret;
+}
+#endif
- /* write OOB data first, as ecc will be placed
- * in there*/
- result = meminfo->write_oob(meminfo,
- mtdoffset,
- meminfo->oobsize,
- &written,
- (unsigned char *)
- &oob_buf);
+/**
+ * check_skip_len
+ *
+ * Check if there are any bad blocks, and whether length including bad
+ * blocks fits into device
+ *
+ * @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,
+ size_t *used)
+{
+ size_t len_excl_bad = 0;
+ int ret = 0;
- if (result != 0) {
- printf("\nMTD writeoob failure: %d\n",
- result);
- goto restoreoob;
- }
- imglen -= meminfo->oobsize;
- }
+ while (len_excl_bad < length) {
+ size_t block_len, block_off;
+ loff_t block_start;
- /* write out the page data */
- result = meminfo->write(meminfo,
- mtdoffset,
- meminfo->writesize,
- &written,
- (unsigned char *) &data_buf);
+ if (offset >= nand->size)
+ return -1;
- if (result != 0) {
- printf("writing NAND page at offset 0x%lx failed\n",
- mtdoffset);
- goto restoreoob;
- }
- imglen -= readlen;
+ block_start = offset & ~(loff_t)(nand->erasesize - 1);
+ block_off = offset & (nand->erasesize - 1);
+ block_len = nand->erasesize - block_off;
- if (!opts->quiet) {
- unsigned long long n = (unsigned long long)
- (opts->length-imglen) * 100;
- int percent;
+ if (!nand_block_isbad(nand, block_start))
+ len_excl_bad += block_len;
+ else
+ ret = 1;
- do_div(n, opts->length);
- percent = (int)n;
+ offset += block_len;
+ *used += block_len;
+ }
- /* output progress message only at whole percent
- * steps to reduce the number of messages printed
- * on (slow) serial consoles
- */
- if (percent != percent_complete) {
- printf("\rWriting data at 0x%lx "
- "-- %3d%% complete.",
- mtdoffset, percent);
- percent_complete = percent;
- }
- }
+ /* If the length is not a multiple of block_len, adjust. */
+ if (len_excl_bad > length)
+ *used -= (len_excl_bad - length);
- mtdoffset += meminfo->writesize;
- }
+ return ret;
+}
- if (!opts->quiet)
- printf("\n");
+#ifdef CONFIG_CMD_NAND_TRIMFFS
+static size_t drop_ffs(const nand_info_t *nand, const u_char *buf,
+ const size_t *len)
+{
+ size_t i, l = *len;
-restoreoob:
- if (ecclayoutchanged) {
- memcpy(&meminfo->ecclayout, &old_ecclayout,
- sizeof(meminfo->ecclayout));
- }
+ for (i = l - 1; i >= 0; i--)
+ if (buf[i] != 0xFF)
+ break;
- if (imglen > 0) {
- printf("Data did not fit into device, due to bad blocks\n");
- return -1;
- }
+ /* 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;
- /* return happy */
- return 0;
+ /*
+ * since the input length may be unaligned, prevent access past the end
+ * of the buffer
+ */
+ return min(l, *len);
}
+#endif
/**
- * nand_read_opts: - read image from NAND flash with support for various options
+ * nand_write_skip_bad:
*
- * @param meminfo NAND device to erase
- * @param opts read options (@see struct nand_read_options)
- * @return 0 in case of success
+ * 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. 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_read_opts(nand_info_t *meminfo, const nand_read_options_t *opts)
+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 imglen = opts->length;
- int pagelen;
- int baderaseblock;
- int blockstart = -1;
- int percent_complete = -1;
- loff_t offs;
- size_t readlen;
- ulong mtdoffset = opts->offset;
- u_char *buffer = opts->buffer;
- int result;
-
- /* make sure device page sizes are valid */
- if (!(meminfo->oobsize == 16 && meminfo->writesize == 512)
- && !(meminfo->oobsize == 8 && meminfo->writesize == 256)
- && !(meminfo->oobsize == 64 && meminfo->writesize == 2048)) {
- printf("Unknown flash (not normal NAND)\n");
- return -1;
+ 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;
+
+ 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;
}
- pagelen = meminfo->writesize
- + ((opts->readoob != 0) ? meminfo->oobsize : 0);
-
- /* check, if length is not larger than device */
- if (((imglen / pagelen) * meminfo->writesize)
- > (meminfo->size - opts->offset)) {
- printf("Image %d bytes, NAND page %d bytes, "
- "OOB area %u bytes, device size %u bytes\n",
- imglen, pagelen, meminfo->writesize, meminfo->size);
- printf("Input block is larger than device\n");
- return -1;
+ /*
+ * nand_write() handles unaligned, partial page writes.
+ *
+ * We allow length to be unaligned, for convenience in
+ * using the $filesize variable.
+ *
+ * However, starting at an unaligned offset makes the
+ * semantics of bad block skipping ambiguous (really,
+ * 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) {
+ printf("Attempt to write non page-aligned data\n");
+ *length = 0;
+ return -EINVAL;
}
- if (!opts->quiet)
- printf("\n");
-
- /* get data from input and write to the device */
- while (imglen && (mtdoffset < meminfo->size)) {
+ need_skip = check_skip_len(nand, offset, *length, &used_for_write);
- WATCHDOG_RESET ();
-
- /*
- * new eraseblock, check for bad block(s). Stay in the
- * loop to be sure if the offset changes because of
- * a bad block, that the next block that will be
- * written to is also checked. Thus avoiding errors if
- * the block(s) after the skipped block(s) is also bad
- * (number of blocks depending on the blockalign
- */
- while (blockstart != (mtdoffset & (~meminfo->erasesize+1))) {
- blockstart = mtdoffset & (~meminfo->erasesize+1);
- offs = blockstart;
- baderaseblock = 0;
-
- /* check all the blocks in an erase block for
- * bad blocks */
- do {
- int ret = meminfo->block_isbad(meminfo, offs);
-
- if (ret < 0) {
- printf("Bad block check failed\n");
- return -1;
- }
- if (ret == 1) {
- baderaseblock = 1;
- if (!opts->quiet)
- printf("\rBad block at 0x%lx "
- "in erase block from "
- "0x%x will be skipped\n",
- (long) offs,
- blockstart);
- }
-
- if (baderaseblock) {
- mtdoffset = blockstart
- + meminfo->erasesize;
- }
- offs += meminfo->erasesize;
-
- } while (offs < blockstart + meminfo->erasesize);
- }
+ if (actual)
+ *actual = used_for_write;
+ if (need_skip < 0) {
+ printf("Attempt to write outside the flash area\n");
+ *length = 0;
+ return -EINVAL;
+ }
- /* read page data to memory buffer */
- result = meminfo->read(meminfo,
- mtdoffset,
- meminfo->writesize,
- &readlen,
- (unsigned char *) &data_buf);
+ if (used_for_write > lim) {
+ puts("Size of write exceeds partition or device limit\n");
+ *length = 0;
+ return -EFBIG;
+ }
- if (result != 0) {
- printf("reading NAND page at offset 0x%lx failed\n",
- mtdoffset);
- return -1;
- }
+ if (!need_skip && !(flags & WITH_DROP_FFS)) {
+ rval = nand_write(nand, offset, length, buffer);
+ if (rval == 0)
+ return 0;
- if (imglen < readlen) {
- readlen = imglen;
- }
+ *length = 0;
+ printf("NAND write to offset %llx failed %d\n",
+ offset, rval);
+ return rval;
+ }
- memcpy(buffer, data_buf, readlen);
- buffer += readlen;
- imglen -= readlen;
+ while (left_to_write > 0) {
+ size_t block_offset = offset & (nand->erasesize - 1);
+ size_t write_size, truncated_write_size;
- if (opts->readoob) {
- result = meminfo->read_oob(meminfo,
- mtdoffset,
- meminfo->oobsize,
- &readlen,
- (unsigned char *)
- &oob_buf);
+ WATCHDOG_RESET();
- if (result != 0) {
- printf("\nMTD readoob failure: %d\n",
- result);
- return -1;
- }
+ if (nand_block_isbad(nand, offset & ~(nand->erasesize - 1))) {
+ printf("Skip bad block 0x%08llx\n",
+ offset & ~(nand->erasesize - 1));
+ offset += nand->erasesize - block_offset;
+ continue;
+ }
+ if (left_to_write < (blocksize - block_offset))
+ write_size = left_to_write;
+ else
+ write_size = blocksize - block_offset;
- if (imglen < readlen) {
- readlen = imglen;
- }
+#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;
- memcpy(buffer, oob_buf, readlen);
+ ops.len = pagesize;
+ ops.ooblen = nand->oobsize;
+ ops.mode = MTD_OOB_AUTO;
+ ops.ooboffs = 0;
- buffer += readlen;
- imglen -= readlen;
- }
+ pages = write_size / pagesize_oob;
+ for (page = 0; page < pages; page++) {
+ WATCHDOG_RESET();
- if (!opts->quiet) {
- unsigned long long n = (unsigned long long)
- (opts->length-imglen) * 100;
- int percent;
+ ops.datbuf = p_buffer;
+ ops.oobbuf = ops.datbuf + pagesize;
- do_div(n, opts->length);
- percent = (int)n;
+ rval = nand->write_oob(nand, offset, &ops);
+ if (rval != 0)
+ break;
- /* output progress message only at whole percent
- * steps to reduce the number of messages printed
- * on (slow) serial consoles
- */
- if (percent != percent_complete) {
- if (!opts->quiet)
- printf("\rReading data from 0x%lx "
- "-- %3d%% complete.",
- mtdoffset, percent);
- percent_complete = percent;
+ offset += pagesize;
+ p_buffer += pagesize_oob;
}
}
+ else
+#endif
+ {
+ 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);
+#endif
- mtdoffset += meminfo->writesize;
- }
+ rval = nand_write(nand, offset, &truncated_write_size,
+ p_buffer);
+ offset += write_size;
+ p_buffer += write_size;
+ }
- if (!opts->quiet)
- printf("\n");
+ if (rval != 0) {
+ printf("NAND write to offset %llx failed %d\n",
+ offset, rval);
+ *length -= left_to_write;
+ return rval;
+ }
- if (imglen > 0) {
- printf("Could not read entire image due to bad blocks\n");
- return -1;
+ left_to_write -= write_size;
}
- /* return happy */
return 0;
}
-#endif
-
-/* XXX U-BOOT XXX */
-#if 0
-/******************************************************************************
- * Support for locking / unlocking operations of some NAND devices
- *****************************************************************************/
-
-#define NAND_CMD_LOCK 0x2a
-#define NAND_CMD_LOCK_TIGHT 0x2c
-#define NAND_CMD_UNLOCK1 0x23
-#define NAND_CMD_UNLOCK2 0x24
-#define NAND_CMD_LOCK_STATUS 0x7a
/**
- * nand_lock: Set all pages of NAND flash chip to the LOCK or LOCK-TIGHT
- * state
- *
- * @param meminfo nand mtd instance
- * @param tight bring device in lock tight mode
- *
- * @return 0 on success, -1 in case of error
+ * nand_read_skip_bad:
*
- * The lock / lock-tight command only applies to the whole chip. To get some
- * parts of the chip lock and others unlocked use the following sequence:
- *
- * - Lock all pages of the chip using nand_lock(mtd, 0) (or the lockpre pin)
- * - Call nand_unlock() once for each consecutive area to be unlocked
- * - If desired: Bring the chip to the lock-tight state using nand_lock(mtd, 1)
+ * 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. 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.
*
- * If the device is in lock-tight state software can't change the
- * current active lock/unlock state of all pages. nand_lock() / nand_unlock()
- * calls will fail. It is only posible to leave lock-tight state by
- * an hardware signal (low pulse on _WP pin) or by power down.
+ * @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_lock(nand_info_t *meminfo, int tight)
+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 ret = 0;
- int status;
- struct nand_chip *this = meminfo->priv;
+ 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;
+ }
- /* select the NAND device */
- this->select_chip(meminfo, 0);
+ need_skip = check_skip_len(nand, offset, *length, &used_for_read);
- this->cmdfunc(meminfo,
- (tight ? NAND_CMD_LOCK_TIGHT : NAND_CMD_LOCK),
- -1, -1);
+ if (actual)
+ *actual = used_for_read;
- /* call wait ready function */
- status = this->waitfunc(meminfo, this, FL_WRITING);
+ if (need_skip < 0) {
+ printf("Attempt to read outside the flash area\n");
+ *length = 0;
+ return -EINVAL;
+ }
- /* see if device thinks it succeeded */
- if (status & 0x01) {
- ret = -1;
+ if (used_for_read > lim) {
+ puts("Size of read exceeds partition or device limit\n");
+ *length = 0;
+ return -EFBIG;
}
- /* de-select the NAND device */
- this->select_chip(meminfo, -1);
- return ret;
-}
+ if (!need_skip) {
+ rval = nand_read(nand, offset, length, buffer);
+ if (!rval || rval == -EUCLEAN)
+ return 0;
-/**
- * nand_get_lock_status: - query current lock state from one page of NAND
- * flash
- *
- * @param meminfo nand mtd instance
- * @param offset page address to query (muss be page aligned!)
- *
- * @return -1 in case of error
- * >0 lock status:
- * bitfield with the following combinations:
- * NAND_LOCK_STATUS_TIGHT: page in tight state
- * NAND_LOCK_STATUS_LOCK: page locked
- * NAND_LOCK_STATUS_UNLOCK: page unlocked
- *
- */
-int nand_get_lock_status(nand_info_t *meminfo, ulong offset)
-{
- int ret = 0;
- int chipnr;
- int page;
- struct nand_chip *this = meminfo->priv;
+ *length = 0;
+ printf("NAND read from offset %llx failed %d\n",
+ offset, rval);
+ return rval;
+ }
- /* select the NAND device */
- chipnr = (int)(offset >> this->chip_shift);
- this->select_chip(meminfo, chipnr);
+ while (left_to_read > 0) {
+ size_t block_offset = offset & (nand->erasesize - 1);
+ size_t read_length;
+ WATCHDOG_RESET();
- if ((offset & (meminfo->writesize - 1)) != 0) {
- printf ("nand_get_lock_status: "
- "Start address must be beginning of "
- "nand page!\n");
- ret = -1;
- goto out;
- }
+ if (nand_block_isbad(nand, offset & ~(nand->erasesize - 1))) {
+ printf("Skipping bad block 0x%08llx\n",
+ offset & ~(nand->erasesize - 1));
+ offset += nand->erasesize - block_offset;
+ continue;
+ }
- /* check the Lock Status */
- page = (int)(offset >> this->page_shift);
- this->cmdfunc(meminfo, NAND_CMD_LOCK_STATUS, -1, page & this->pagemask);
+ if (left_to_read < (nand->erasesize - block_offset))
+ read_length = left_to_read;
+ else
+ read_length = nand->erasesize - block_offset;
+
+ rval = nand_read(nand, offset, &read_length, p_buffer);
+ if (rval && rval != -EUCLEAN) {
+ printf("NAND read from offset %llx failed %d\n",
+ offset, rval);
+ *length -= left_to_read;
+ return rval;
+ }
- ret = this->read_byte(meminfo) & (NAND_LOCK_STATUS_TIGHT
- | NAND_LOCK_STATUS_LOCK
- | NAND_LOCK_STATUS_UNLOCK);
+ left_to_read -= read_length;
+ offset += read_length;
+ p_buffer += read_length;
+ }
- out:
- /* de-select the NAND device */
- this->select_chip(meminfo, -1);
- return ret;
+ return 0;
}
+#ifdef CONFIG_CMD_NAND_TORTURE
+
/**
- * nand_unlock: - Unlock area of NAND pages
- * only one consecutive area can be unlocked at one time!
+ * check_pattern:
*
- * @param meminfo nand mtd instance
- * @param start start byte address
- * @param length number of bytes to unlock (must be a multiple of
- * page size nand->writesize)
+ * Check if buffer contains only a certain byte pattern.
*
- * @return 0 on success, -1 in case of error
+ * @param buf buffer to check
+ * @param patt the pattern to check
+ * @param size buffer size in bytes
+ * @return 1 if there are only patt bytes in buf
+ * 0 if something else was found
*/
-int nand_unlock(nand_info_t *meminfo, ulong start, ulong length)
+static int check_pattern(const u_char *buf, u_char patt, int size)
{
- int ret = 0;
- int chipnr;
- int status;
- int page;
- struct nand_chip *this = meminfo->priv;
- printf ("nand_unlock: start: %08x, length: %d!\n",
- (int)start, (int)length);
+ int i;
- /* select the NAND device */
- chipnr = (int)(start >> this->chip_shift);
- this->select_chip(meminfo, chipnr);
+ for (i = 0; i < size; i++)
+ if (buf[i] != patt)
+ return 0;
+ return 1;
+}
- /* check the WP bit */
- this->cmdfunc(meminfo, NAND_CMD_STATUS, -1, -1);
- if ((this->read_byte(meminfo) & 0x80) == 0) {
- printf ("nand_unlock: Device is write protected!\n");
- ret = -1;
- goto out;
+/**
+ * nand_torture:
+ *
+ * Torture a block of NAND flash.
+ * 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 offset offset in flash
+ * @return 0 if the block is still good
+ */
+int nand_torture(nand_info_t *nand, loff_t offset)
+{
+ u_char patterns[] = {0xa5, 0x5a, 0x00};
+ struct erase_info instr = {
+ .mtd = nand,
+ .addr = offset,
+ .len = nand->erasesize,
+ };
+ size_t retlen;
+ int err, ret = -1, i, patt_count;
+ u_char *buf;
+
+ if ((offset & (nand->erasesize - 1)) != 0) {
+ puts("Attempt to torture a block at a non block-aligned offset\n");
+ return -EINVAL;
}
- if ((start & (meminfo->writesize - 1)) != 0) {
- printf ("nand_unlock: Start address must be beginning of "
- "nand page!\n");
- ret = -1;
- goto out;
+ if (offset + nand->erasesize > nand->size) {
+ puts("Attempt to torture a block outside the flash area\n");
+ return -EINVAL;
}
- if (length == 0 || (length & (meminfo->writesize - 1)) != 0) {
- printf ("nand_unlock: Length must be a multiple of nand page "
- "size!\n");
- ret = -1;
- goto out;
+ patt_count = ARRAY_SIZE(patterns);
+
+ buf = malloc(nand->erasesize);
+ if (buf == NULL) {
+ puts("Out of memory for erase block buffer\n");
+ return -ENOMEM;
}
- /* submit address of first page to unlock */
- page = (int)(start >> this->page_shift);
- this->cmdfunc(meminfo, NAND_CMD_UNLOCK1, -1, page & this->pagemask);
+ for (i = 0; i < patt_count; i++) {
+ err = nand->erase(nand, &instr);
+ if (err) {
+ printf("%s: erase() failed for block at 0x%llx: %d\n",
+ nand->name, instr.addr, err);
+ goto out;
+ }
- /* submit ADDRESS of LAST page to unlock */
- page += (int)(length >> this->page_shift) - 1;
- this->cmdfunc(meminfo, NAND_CMD_UNLOCK2, -1, page & this->pagemask);
+ /* Make sure the block contains only 0xff bytes */
+ err = nand->read(nand, offset, nand->erasesize, &retlen, buf);
+ if ((err && err != -EUCLEAN) || retlen != nand->erasesize) {
+ printf("%s: read() failed for block at 0x%llx: %d\n",
+ nand->name, instr.addr, err);
+ goto out;
+ }
- /* call wait ready function */
- status = this->waitfunc(meminfo, this, FL_WRITING);
- /* see if device thinks it succeeded */
- if (status & 0x01) {
- /* there was an error */
- ret = -1;
- goto out;
+ err = check_pattern(buf, 0xff, nand->erasesize);
+ if (!err) {
+ printf("Erased block at 0x%llx, but a non-0xff byte was found\n",
+ offset);
+ ret = -EIO;
+ goto out;
+ }
+
+ /* 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) {
+ printf("%s: write() failed for block at 0x%llx: %d\n",
+ nand->name, instr.addr, err);
+ goto out;
+ }
+
+ err = nand->read(nand, offset, nand->erasesize, &retlen, buf);
+ if ((err && err != -EUCLEAN) || retlen != nand->erasesize) {
+ printf("%s: read() failed for block at 0x%llx: %d\n",
+ nand->name, instr.addr, err);
+ goto out;
+ }
+
+ err = check_pattern(buf, patterns[i], nand->erasesize);
+ if (!err) {
+ printf("Pattern 0x%.2x checking failed for block at "
+ "0x%llx\n", patterns[i], offset);
+ ret = -EIO;
+ goto out;
+ }
}
- out:
- /* de-select the NAND device */
- this->select_chip(meminfo, -1);
+ ret = 0;
+
+out:
+ free(buf);
return ret;
}
-#endif
#endif
projects / platform / kernel / u-boot.git / blobdiff