+++ /dev/null
-/*
- * drivers/nand/nand_util.c
- *
- * Copyright (C) 2006 by Weiss-Electronic GmbH.
- * All rights reserved.
- *
- * @author: Guido Classen <clagix@gmail.com>
- * @descr: NAND Flash support
- * @references: borrowed heavily from Linux mtd-utils code:
- * flash_eraseall.c by Arcom Control System Ltd
- * nandwrite.c by Steven J. Hill (sjhill@realitydiluted.com)
- * and Thomas Gleixner (tglx@linutronix.de)
- *
- * 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
- *
- */
-
-#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 <nand.h>
-#include <jffs2/jffs2.h>
-
-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)
- *
- * @param meminfo NAND device 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)
-{
- struct jffs2_unknown_node cleanmarker;
- int clmpos = 0;
- int clmlen = 8;
- erase_info_t erase;
- ulong erase_length;
- int isNAND;
- 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;
-
- memset(&erase, 0, sizeof(erase));
-
- 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;
- }
- }
-
- 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));
- }
-
- /* 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...
- * after scrub, there are no bad blocks left!
- */
- if (priv_nand->bbt) {
- kfree(priv_nand->bbt);
- }
- priv_nand->bbt = NULL;
- }
-
- for (;
- erase.addr < opts->offset + erase_length;
- erase.addr += meminfo->erasesize) {
-
- 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 "
- " \n",
- erase.addr);
- continue;
-
- } else if (ret < 0) {
- printf("\n%s: MTD get bad block failed: %d\n",
- mtd_device,
- ret);
- return -1;
- }
- }
-
- result = meminfo->erase(meminfo, &erase);
- if (result != 0) {
- printf("\n%s: MTD Erase failure: %d\n",
- mtd_device, result);
- continue;
- }
-
- /* 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->quiet) {
- unsigned long long n =(unsigned long long)
- (erase.addr + meminfo->erasesize - opts->offset)
- * 100;
- int percent;
-
- do_div(n, erase_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) {
- percent_complete = percent;
-
- printf("\rErasing at 0x%x -- %3d%% complete.",
- erase.addr, percent);
-
- if (opts->jffs2 && result == 0)
- printf(" Cleanmarker written at 0x%x.",
- 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);
- }
-
- 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;
-}
-
-/******************************************************************************
- * 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
- *
- * 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_lock(nand_info_t *meminfo, int tight)
-{
- int ret = 0;
- int status;
- struct nand_chip *this = meminfo->priv;
-
- /* select the NAND device */
- this->select_chip(meminfo, 0);
-
- this->cmdfunc(meminfo,
- (tight ? NAND_CMD_LOCK_TIGHT : NAND_CMD_LOCK),
- -1, -1);
-
- /* call wait ready function */
- status = this->waitfunc(meminfo, this, FL_WRITING);
-
- /* see if device thinks it succeeded */
- if (status & 0x01) {
- ret = -1;
- }
-
- /* de-select the NAND device */
- this->select_chip(meminfo, -1);
- return ret;
-}
-
-/**
- * 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;
-
- /* select the NAND device */
- chipnr = (int)(offset >> this->chip_shift);
- this->select_chip(meminfo, chipnr);
-
-
- if ((offset & (meminfo->oobblock - 1)) != 0) {
- printf ("nand_get_lock_status: "
- "Start address must be beginning of "
- "nand page!\n");
- ret = -1;
- goto out;
- }
-
- /* check the Lock Status */
- page = (int)(offset >> this->page_shift);
- this->cmdfunc(meminfo, NAND_CMD_LOCK_STATUS, -1, page & this->pagemask);
-
- ret = this->read_byte(meminfo) & (NAND_LOCK_STATUS_TIGHT
- | NAND_LOCK_STATUS_LOCK
- | NAND_LOCK_STATUS_UNLOCK);
-
- out:
- /* de-select the NAND device */
- this->select_chip(meminfo, -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 start start byte address
- * @param length number of bytes to unlock (must be a multiple of
- * page size nand->oobblock)
- *
- * @return 0 on success, -1 in case of error
- */
-int nand_unlock(nand_info_t *meminfo, ulong start, ulong length)
-{
- 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);
-
- /* select the NAND device */
- chipnr = (int)(start >> this->chip_shift);
- this->select_chip(meminfo, chipnr);
-
- /* 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;
- }
-
- if ((start & (meminfo->oobblock - 1)) != 0) {
- printf ("nand_unlock: Start address must be beginning of "
- "nand page!\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");
- ret = -1;
- goto out;
- }
-
- /* submit address of first page to unlock */
- page = (int)(start >> this->page_shift);
- this->cmdfunc(meminfo, NAND_CMD_UNLOCK1, -1, page & this->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);
-
- /* 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;
- }
-
- out:
- /* de-select the NAND device */
- this->select_chip(meminfo, -1);
- return ret;
-}
-
-#endif
projects / oweals / u-boot.git / blobdiff