* 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>
int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts)
{
struct jffs2_unknown_node cleanmarker;
- int clmpos = 0;
- int clmlen = 8;
erase_info_t erase;
- ulong erase_length;
- int isNAND;
+ 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;
+
+ if ((opts->offset & (meminfo->writesize - 1)) != 0) {
+ printf("Attempt to erase non page 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;
-
- isNAND = meminfo->type == MTD_NANDFLASH ? 1 : 0;
-
- if (opts->jffs2) {
- cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
- cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
- if (isNAND) {
- struct nand_oobinfo *oobinfo = &meminfo->oobinfo;
-
- /* check for autoplacement */
- if (oobinfo->useecc == MTD_NANDECC_AUTOPLACE) {
- /* get the position of the free bytes */
- if (!oobinfo->oobfree[0][1]) {
- printf(" Eeep. Autoplacement selected "
- "and no empty space in oob\n");
- return -1;
- }
- clmpos = oobinfo->oobfree[0][0];
- clmlen = oobinfo->oobfree[0][1];
- if (clmlen > 8)
- clmlen = 8;
- } else {
- /* legacy mode */
- switch (meminfo->oobsize) {
- case 8:
- clmpos = 6;
- clmlen = 2;
- break;
- case 16:
- clmpos = 8;
- clmlen = 8;
- break;
- case 64:
- clmpos = 16;
- clmlen = 8;
- break;
- }
- }
+ erase_length = lldiv(opts->length + meminfo->erasesize - 1,
+ meminfo->erasesize);
- cleanmarker.totlen = cpu_to_je32(8);
- } else {
- cleanmarker.totlen =
- cpu_to_je32(sizeof(struct jffs2_unknown_node));
- }
- cleanmarker.hdr_crc = cpu_to_je32(
- crc32_no_comp(0, (unsigned char *) &cleanmarker,
- sizeof(struct jffs2_unknown_node) - 4));
- }
+ cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
+ cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
+ cleanmarker.totlen = cpu_to_je32(8);
/* scrub option allows to erase badblock. To prevent internal
* check from erase() method, set block check method to dummy
priv_nand->bbt = NULL;
}
- if (erase_length < meminfo->erasesize) {
- printf("Warning: Erase size 0x%08x smaller than one " \
- "erase block 0x%08x\n",erase_length, meminfo->erasesize);
- printf(" Erasing 0x%08x instead\n", meminfo->erasesize);
- erase_length = meminfo->erasesize;
- }
-
- for (;
- erase.addr < opts->offset + erase_length;
+ for (erased_length = 0;
+ erased_length < erase_length;
erase.addr += meminfo->erasesize) {
WATCHDOG_RESET ();
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) {
-
- /* write cleanmarker */
- if (isNAND) {
- size_t written;
- result = meminfo->write_oob(meminfo,
- erase.addr + clmpos,
- clmlen,
- &written,
- (unsigned char *)
- &cleanmarker);
- if (result != 0) {
- printf("\n%s: MTD writeoob failure: %d\n",
- mtd_device, result);
- continue;
- }
- } else {
- printf("\n%s: this erase routine only supports"
- " NAND devices!\n",
- mtd_device);
+ 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);
+ if (result != 0) {
+ printf("\n%s: MTD writeoob failure: %d\n",
+ mtd_device, result);
+ continue;
}
}
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.",
+ printf("\rErasing at 0x%llx -- %3d%% complete.",
erase.addr, percent);
if (opts->jffs2 && result == 0)
- printf(" Cleanmarker written at 0x%x.",
+ printf(" Cleanmarker written at 0x%llx.",
erase.addr);
}
}
return 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_oobinfo none_oobinfo = {
- .useecc = MTD_NANDECC_OFF,
-};
-
-static struct nand_oobinfo jffs2_oobinfo = {
- .useecc = MTD_NANDECC_PLACE,
- .eccbytes = 6,
- .eccpos = { 0, 1, 2, 3, 6, 7 }
-};
-
-static struct nand_oobinfo yaffs_oobinfo = {
- .useecc = MTD_NANDECC_PLACE,
- .eccbytes = 6,
- .eccpos = { 8, 9, 10, 13, 14, 15}
-};
-
-static struct nand_oobinfo autoplace_oobinfo = {
- .useecc = MTD_NANDECC_AUTOPLACE
-};
-
-/**
- * nand_write_opts: - write image to NAND flash with support for various options
- *
- * @param meminfo NAND device to erase
- * @param opts write options (@see nand_write_options)
- * @return 0 in case of success
- *
- * 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 imglen = 0;
- int pagelen;
- int baderaseblock;
- int blockstart = -1;
- loff_t offs;
- int readlen;
- int oobinfochanged = 0;
- int percent_complete = -1;
- struct nand_oobinfo old_oobinfo;
- ulong mtdoffset = opts->offset;
- ulong erasesize_blockalign;
- u_char *buffer = opts->buffer;
- size_t written;
- int result;
-
- if (opts->pad && opts->writeoob) {
- printf("Can't pad when oob data is present.\n");
- return -1;
- }
-
- /* 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->oobblock == 512)
- && !(meminfo->oobsize == 8 && meminfo->oobblock == 256)
- && !(meminfo->oobsize == 64 && meminfo->oobblock == 2048)) {
- printf("Unknown flash (not normal NAND)\n");
- return -1;
- }
-
- /* read the current oob info */
- memcpy(&old_oobinfo, &meminfo->oobinfo, sizeof(old_oobinfo));
-
- /* write without ecc? */
- if (opts->noecc) {
- memcpy(&meminfo->oobinfo, &none_oobinfo,
- sizeof(meminfo->oobinfo));
- oobinfochanged = 1;
- }
-
- /* autoplace ECC? */
- if (opts->autoplace && (old_oobinfo.useecc != MTD_NANDECC_AUTOPLACE)) {
-
- memcpy(&meminfo->oobinfo, &autoplace_oobinfo,
- sizeof(meminfo->oobinfo));
- oobinfochanged = 1;
- }
-
- /* force OOB layout for jffs2 or yaffs? */
- if (opts->forcejffs2 || opts->forceyaffs) {
- struct nand_oobinfo *oobsel =
- opts->forcejffs2 ? &jffs2_oobinfo : &yaffs_oobinfo;
-
- 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_oobinfo.eccbytes = 3;
- }
-
- memcpy(&meminfo->oobinfo, oobsel, sizeof(meminfo->oobinfo));
- }
-
- /* get image length */
- imglen = opts->length;
- pagelen = meminfo->oobblock
- + ((opts->writeoob != 0) ? meminfo->oobsize : 0);
-
- /* check, if file is pagealigned */
- if ((!opts->pad) && ((imglen % pagelen) != 0)) {
- printf("Input block length is not page aligned\n");
- goto restoreoob;
- }
-
- /* check, if length fits into device */
- if (((imglen / pagelen) * meminfo->oobblock)
- > (meminfo->size - opts->offset)) {
- printf("Image %d bytes, NAND page %d bytes, "
- "OOB area %u bytes, device size %u bytes\n",
- imglen, pagelen, meminfo->oobblock, meminfo->size);
- printf("Input block does not fit into device\n");
- goto restoreoob;
- }
-
- if (!opts->quiet)
- printf("\n");
-
- /* get data from input and write to the device */
- while (imglen && (mtdoffset < meminfo->size)) {
-
- 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 & (~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);
- }
-
- readlen = meminfo->oobblock;
- if (opts->pad && (imglen < readlen)) {
- readlen = imglen;
- memset(data_buf + readlen, 0xff,
- meminfo->oobblock - readlen);
- }
-
- /* read page data from input memory buffer */
- memcpy(data_buf, buffer, readlen);
- buffer += readlen;
-
- if (opts->writeoob) {
- /* read OOB data from input memory block, exit
- * on failure */
- memcpy(oob_buf, buffer, meminfo->oobsize);
- buffer += meminfo->oobsize;
-
- /* write OOB data first, as ecc will be placed
- * in there*/
- result = meminfo->write_oob(meminfo,
- mtdoffset,
- meminfo->oobsize,
- &written,
- (unsigned char *)
- &oob_buf);
-
- if (result != 0) {
- printf("\nMTD writeoob failure: %d\n",
- result);
- goto restoreoob;
- }
- imglen -= meminfo->oobsize;
- }
-
- /* write out the page data */
- result = meminfo->write(meminfo,
- mtdoffset,
- meminfo->oobblock,
- &written,
- (unsigned char *) &data_buf);
-
- if (result != 0) {
- printf("writing NAND page at offset 0x%lx failed\n",
- mtdoffset);
- goto restoreoob;
- }
- imglen -= readlen;
-
- if (!opts->quiet) {
- unsigned long long n = (unsigned long long)
- (opts->length-imglen) * 100;
- int percent;
-
- do_div(n, opts->length);
- percent = (int)n;
-
- /* 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%x "
- "-- %3d%% complete.",
- mtdoffset, percent);
- percent_complete = percent;
- }
- }
-
- mtdoffset += meminfo->oobblock;
- }
-
- if (!opts->quiet)
- printf("\n");
-
-restoreoob:
- if (oobinfochanged) {
- memcpy(&meminfo->oobinfo, &old_oobinfo,
- sizeof(meminfo->oobinfo));
- }
-
- if (imglen > 0) {
- printf("Data did not fit into device, due to bad blocks\n");
- return -1;
- }
-
- /* return happy */
- return 0;
-}
-
-/**
- * nand_read_opts: - read image from NAND flash with support for various options
- *
- * @param meminfo NAND device to erase
- * @param opts read options (@see struct nand_read_options)
- * @return 0 in case of success
- *
- */
-int nand_read_opts(nand_info_t *meminfo, const nand_read_options_t *opts)
-{
- 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->oobblock == 512)
- && !(meminfo->oobsize == 8 && meminfo->oobblock == 256)
- && !(meminfo->oobsize == 64 && meminfo->oobblock == 2048)) {
- printf("Unknown flash (not normal NAND)\n");
- return -1;
- }
-
- pagelen = meminfo->oobblock
- + ((opts->readoob != 0) ? meminfo->oobsize : 0);
-
- /* check, if length is not larger than device */
- if (((imglen / pagelen) * meminfo->oobblock)
- > (meminfo->size - opts->offset)) {
- printf("Image %d bytes, NAND page %d bytes, "
- "OOB area %u bytes, device size %u bytes\n",
- imglen, pagelen, meminfo->oobblock, meminfo->size);
- printf("Input block is larger than device\n");
- return -1;
- }
-
- if (!opts->quiet)
- printf("\n");
-
- /* get data from input and write to the device */
- while (imglen && (mtdoffset < meminfo->size)) {
-
- 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);
- }
-
-
- /* read page data to memory buffer */
- result = meminfo->read(meminfo,
- mtdoffset,
- meminfo->oobblock,
- &readlen,
- (unsigned char *) &data_buf);
-
- if (result != 0) {
- printf("reading NAND page at offset 0x%lx failed\n",
- mtdoffset);
- return -1;
- }
-
- if (imglen < readlen) {
- readlen = imglen;
- }
-
- memcpy(buffer, data_buf, readlen);
- buffer += readlen;
- imglen -= readlen;
-
- if (opts->readoob) {
- result = meminfo->read_oob(meminfo,
- mtdoffset,
- meminfo->oobsize,
- &readlen,
- (unsigned char *)
- &oob_buf);
-
- if (result != 0) {
- printf("\nMTD readoob failure: %d\n",
- result);
- return -1;
- }
-
-
- if (imglen < readlen) {
- readlen = imglen;
- }
-
- memcpy(buffer, oob_buf, readlen);
-
- buffer += readlen;
- imglen -= readlen;
- }
-
- if (!opts->quiet) {
- unsigned long long n = (unsigned long long)
- (opts->length-imglen) * 100;
- int percent;
-
- do_div(n, opts->length);
- percent = (int)n;
-
- /* 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%x "
- "-- %3d%% complete.",
- mtdoffset, percent);
- percent_complete = percent;
- }
- }
-
- mtdoffset += meminfo->oobblock;
- }
-
- if (!opts->quiet)
- printf("\n");
-
- if (imglen > 0) {
- printf("Could not read entire image due to bad blocks\n");
- return -1;
- }
-
- /* return happy */
- return 0;
-}
+#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
/******************************************************************************
* Support for locking / unlocking operations of some NAND devices
* nand_lock: Set all pages of NAND flash chip to the LOCK or LOCK-TIGHT
* state
*
- * @param meminfo nand mtd instance
+ * @param mtd nand mtd instance
* @param tight bring device in lock tight mode
*
* @return 0 on success, -1 in case of error
* 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_lock(nand_info_t *meminfo, int tight)
+int nand_lock(struct mtd_info *mtd, int tight)
{
int ret = 0;
int status;
- struct nand_chip *this = meminfo->priv;
+ struct nand_chip *chip = mtd->priv;
/* select the NAND device */
- this->select_chip(meminfo, 0);
+ chip->select_chip(mtd, 0);
- this->cmdfunc(meminfo,
+ chip->cmdfunc(mtd,
(tight ? NAND_CMD_LOCK_TIGHT : NAND_CMD_LOCK),
-1, -1);
/* call wait ready function */
- status = this->waitfunc(meminfo, this, FL_WRITING);
+ status = chip->waitfunc(mtd, chip);
/* see if device thinks it succeeded */
if (status & 0x01) {
}
/* de-select the NAND device */
- this->select_chip(meminfo, -1);
+ chip->select_chip(mtd, -1);
return ret;
}
* nand_get_lock_status: - query current lock state from one page of NAND
* flash
*
- * @param meminfo nand mtd instance
+ * @param mtd nand mtd instance
* @param offset page address to query (muss be page aligned!)
*
* @return -1 in case of error
* NAND_LOCK_STATUS_UNLOCK: page unlocked
*
*/
-int nand_get_lock_status(nand_info_t *meminfo, ulong offset)
+int nand_get_lock_status(struct mtd_info *mtd, loff_t offset)
{
int ret = 0;
int chipnr;
int page;
- struct nand_chip *this = meminfo->priv;
+ struct nand_chip *chip = mtd->priv;
/* select the NAND device */
- chipnr = (int)(offset >> this->chip_shift);
- this->select_chip(meminfo, chipnr);
+ chipnr = (int)(offset >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
- if ((offset & (meminfo->oobblock - 1)) != 0) {
+ if ((offset & (mtd->writesize - 1)) != 0) {
printf ("nand_get_lock_status: "
"Start address must be beginning of "
"nand page!\n");
}
/* check the Lock Status */
- page = (int)(offset >> this->page_shift);
- this->cmdfunc(meminfo, NAND_CMD_LOCK_STATUS, -1, page & this->pagemask);
+ page = (int)(offset >> chip->page_shift);
+ chip->cmdfunc(mtd, NAND_CMD_LOCK_STATUS, -1, page & chip->pagemask);
- ret = this->read_byte(meminfo) & (NAND_LOCK_STATUS_TIGHT
+ ret = chip->read_byte(mtd) & (NAND_LOCK_STATUS_TIGHT
| NAND_LOCK_STATUS_LOCK
| NAND_LOCK_STATUS_UNLOCK);
out:
/* de-select the NAND device */
- this->select_chip(meminfo, -1);
+ chip->select_chip(mtd, -1);
return ret;
}
* nand_unlock: - Unlock area of NAND pages
* only one consecutive area can be unlocked at one time!
*
- * @param meminfo nand mtd instance
+ * @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->oobblock)
+ * page size nand->writesize)
*
* @return 0 on success, -1 in case of error
*/
-int nand_unlock(nand_info_t *meminfo, ulong start, ulong length)
+int nand_unlock(struct mtd_info *mtd, ulong start, ulong length)
{
int ret = 0;
int chipnr;
int status;
int page;
- struct nand_chip *this = meminfo->priv;
+ struct nand_chip *chip = mtd->priv;
printf ("nand_unlock: start: %08x, length: %d!\n",
(int)start, (int)length);
/* select the NAND device */
- chipnr = (int)(start >> this->chip_shift);
- this->select_chip(meminfo, chipnr);
+ chipnr = (int)(start >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
/* check the WP bit */
- this->cmdfunc(meminfo, NAND_CMD_STATUS, -1, -1);
- if ((this->read_byte(meminfo) & 0x80) == 0) {
+ 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;
}
- if ((start & (meminfo->oobblock - 1)) != 0) {
+ if ((start & (mtd->erasesize - 1)) != 0) {
printf ("nand_unlock: Start address must be beginning of "
- "nand page!\n");
+ "nand block!\n");
ret = -1;
goto out;
}
- if (length == 0 || (length & (meminfo->oobblock - 1)) != 0) {
- printf ("nand_unlock: Length must be a multiple of nand page "
- "size!\n");
+ 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;
}
+ /*
+ * Set length so that the last address is set to the
+ * starting address of the last block
+ */
+ length -= mtd->erasesize;
+
/* submit address of first page to unlock */
- page = (int)(start >> this->page_shift);
- this->cmdfunc(meminfo, NAND_CMD_UNLOCK1, -1, page & this->pagemask);
+ page = (int)(start >> chip->page_shift);
+ chip->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & chip->pagemask);
/* submit ADDRESS of LAST page to unlock */
- page += (int)(length >> this->page_shift) - 1;
- this->cmdfunc(meminfo, NAND_CMD_UNLOCK2, -1, page & this->pagemask);
+ page += (int)(length >> chip->page_shift);
+ chip->cmdfunc(mtd, NAND_CMD_UNLOCK2, -1, page & chip->pagemask);
/* call wait ready function */
- status = this->waitfunc(meminfo, this, FL_WRITING);
+ status = chip->waitfunc(mtd, chip);
/* see if device thinks it succeeded */
if (status & 0x01) {
/* there was an error */
out:
/* de-select the NAND device */
- this->select_chip(meminfo, -1);
+ chip->select_chip(mtd, -1);
+ return ret;
+}
+#endif
+
+/**
+ * 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
+ * @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 len_excl_bad = 0;
+ int ret = 0;
+
+ while (len_excl_bad < length) {
+ size_t block_len, block_off;
+ loff_t block_start;
+
+ if (offset >= nand->size)
+ return -1;
+
+ block_start = offset & ~(loff_t)(nand->erasesize - 1);
+ block_off = offset & (nand->erasesize - 1);
+ block_len = nand->erasesize - block_off;
+
+ if (!nand_block_isbad(nand, block_start))
+ len_excl_bad += block_len;
+ else
+ ret = 1;
+
+ offset += block_len;
+ }
+
return ret;
}
+/**
+ * nand_write_skip_bad:
+ *
+ * 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.
+ *
+ * @param nand NAND device
+ * @param offset offset in flash
+ * @param length buffer length
+ * @param buffer buffer to read from
+ * @param withoob whether write with yaffs format
+ * @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 withoob)
+{
+ int rval = 0, blocksize;
+ size_t left_to_write = *length;
+ u_char *p_buffer = buffer;
+ int need_skip;
+
+#ifdef CONFIG_CMD_NAND_YAFFS
+ if (withoob) {
+ 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;
+ }
+
+ /*
+ * 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;
+ }
+
+ need_skip = check_skip_len(nand, offset, *length);
+ if (need_skip < 0) {
+ printf ("Attempt to write outside the flash area\n");
+ *length = 0;
+ return -EINVAL;
+ }
+
+ if (!need_skip) {
+ rval = nand_write (nand, offset, length, buffer);
+ if (rval == 0)
+ return 0;
+
+ *length = 0;
+ printf ("NAND write to offset %llx failed %d\n",
+ offset, rval);
+ return rval;
+ }
+
+ while (left_to_write > 0) {
+ size_t block_offset = offset & (nand->erasesize - 1);
+ size_t write_size;
+
+ WATCHDOG_RESET ();
+
+ 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;
+
+#ifdef CONFIG_CMD_NAND_YAFFS
+ if (withoob) {
+ 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_OOB_AUTO;
+ ops.ooboffs = 0;
+
+ pages = write_size / pagesize_oob;
+ for (page = 0; page < pages; page++) {
+ ops.datbuf = p_buffer;
+ ops.oobbuf = ops.datbuf + pagesize;
+
+ rval = nand->write_oob(nand, offset, &ops);
+ if (!rval)
+ break;
+
+ offset += pagesize;
+ p_buffer += pagesize_oob;
+ }
+ }
+ else
+#endif
+ {
+ rval = nand_write (nand, offset, &write_size, p_buffer);
+ offset += write_size;
+ p_buffer += write_size;
+ }
+
+ if (rval != 0) {
+ printf ("NAND write to offset %llx failed %d\n",
+ offset, rval);
+ *length -= left_to_write;
+ return rval;
+ }
+
+ left_to_write -= write_size;
+ }
+
+ return 0;
+}
+
+/**
+ * nand_read_skip_bad:
+ *
+ * Read image from NAND flash.
+ * Blocks that are marked bad are skipped and the next block is readen
+ * instead as long as the image is short enough to fit even after skipping the
+ * bad blocks.
+ *
+ * @param nand NAND device
+ * @param offset offset in flash
+ * @param length buffer length, on return holds remaining bytes to read
+ * @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)
+{
+ int rval;
+ size_t left_to_read = *length;
+ 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;
+ return -EINVAL;
+ }
+
+ need_skip = check_skip_len(nand, offset, *length);
+ if (need_skip < 0) {
+ printf ("Attempt to read outside the flash area\n");
+ *length = 0;
+ return -EINVAL;
+ }
+
+ if (!need_skip) {
+ rval = nand_read (nand, offset, length, buffer);
+ if (!rval || rval == -EUCLEAN)
+ return 0;
+
+ *length = 0;
+ printf ("NAND read from offset %llx failed %d\n",
+ offset, rval);
+ return rval;
+ }
+
+ while (left_to_read > 0) {
+ size_t block_offset = offset & (nand->erasesize - 1);
+ size_t read_length;
+
+ WATCHDOG_RESET ();
+
+ 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;
+ }
+
+ 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;
+ }
+
+ left_to_read -= read_length;
+ offset += read_length;
+ p_buffer += read_length;
+ }
+
+ return 0;
+}
projects / people / ms / u-boot.git / blobdiff