[PATCH 09/16] nand: remove unused nand_util file

[Sascha Hauer <s.hauer@pengutronix.de>]

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/mtd/nand/Makefile    |    1 -
 drivers/mtd/nand/nand_util.c |  858 ------------------------------------------
 2 files changed, 0 insertions(+), 859 deletions(-)
 delete mode 100644 drivers/mtd/nand/nand_util.c

diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index fb92f89..3a31bc1 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -15,4 +15,3 @@ obj-$(CONFIG_NAND_IMX)			+= nand_imx.o
 obj-$(CONFIG_NAND_OMAP_GPMC)		+= nand_omap_gpmc.o nand_omap_bch_decoder.o
 obj-$(CONFIG_NAND_ATMEL)		+= atmel_nand.o
 obj-$(CONFIG_NAND_S3C24X0)		+= nand_s3c2410.o
-#obj-$(CONFIG_NAND)			+= nand_util.o
diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c
deleted file mode 100644
index d57294e..0000000
--- a/drivers/mtd/nand/nand_util.c
+++ /dev/null
@@ -1,858 +0,0 @@
-/*
- * 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>
-#include <command.h>
-#include <watchdog.h>
-#include <malloc.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) {
-			int percent = (int)
-				((unsigned long long)
-				 (erase.addr+meminfo->erasesize-opts->offset)
-				 * 100 / erase_length);
-
-			/* 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) {
-			int percent = (int)
-				((unsigned long long)
-				 (opts->length-imglen) * 100
-				 / opts->length);
-			/* 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) {
-			int percent = (int)
-				((unsigned long long)
-				 (opts->length-imglen) * 100
-				 / opts->length);
-			/* 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;
-}
-
-- 
1.7.2.3


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