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-rw-r--r--flash_eraseall.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/flash_eraseall.c b/flash_eraseall.c
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index 0000000..d88246b
--- /dev/null
+++ b/flash_eraseall.c
@@ -0,0 +1,308 @@
+/* eraseall.c -- erase the whole of a MTD device
+
+ Copyright (C) 2000 Arcom Control System Ltd
+
+ Renamed to flash_eraseall.c
+
+ This program is free software; you can redistribute it and/or modify
+ it 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.
+
+ 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
+
+ $Id: flash_eraseall.c,v 1.24 2005/11/07 11:15:10 gleixner Exp $
+*/
+#include <sys/types.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <libgen.h>
+#include <ctype.h>
+#include <time.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include "crc32.h"
+
+#include <mtd/mtd-user.h>
+#include <mtd/jffs2-user.h>
+
+#define PROGRAM "flash_eraseall"
+#define VERSION "$Revision: 1.24 $"
+
+static const char *exe_name;
+static const char *mtd_device;
+static int quiet; /* true -- don't output progress */
+static int jffs2; // format for jffs2 usage
+
+static void process_options (int argc, char *argv[]);
+static void display_help (void);
+static void display_version (void);
+static struct jffs2_raw_ebh ebh;
+int target_endian = __BYTE_ORDER;
+
+int main (int argc, char *argv[])
+{
+ mtd_info_t meminfo;
+ int fd, ebhpos = 0, ebhlen = 0;
+ erase_info_t erase;
+ int isNAND, bbtest = 1;
+ uint32_t pages_per_eraseblock, available_oob_space;
+
+ process_options(argc, argv);
+
+
+ if ((fd = open(mtd_device, O_RDWR)) < 0) {
+ fprintf(stderr, "%s: %s: %s\n", exe_name, mtd_device, strerror(errno));
+ exit(1);
+ }
+
+
+ if (ioctl(fd, MEMGETINFO, &meminfo) != 0) {
+ fprintf(stderr, "%s: %s: unable to get MTD device info\n", exe_name, mtd_device);
+ exit(1);
+ }
+
+ erase.length = meminfo.erasesize;
+ isNAND = meminfo.type == MTD_NANDFLASH ? 1 : 0;
+
+ if (jffs2) {
+ ebh.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
+ ebh.nodetype = cpu_to_je16 (JFFS2_NODETYPE_ERASEBLOCK_HEADER);
+ ebh.totlen = cpu_to_je32(sizeof(struct jffs2_raw_ebh));
+ ebh.hdr_crc = cpu_to_je32 (crc32 (0, &ebh, sizeof (struct jffs2_unknown_node) - 4));
+ ebh.reserved = 0;
+ ebh.compat_fset = JFFS2_EBH_COMPAT_FSET;
+ ebh.incompat_fset = JFFS2_EBH_INCOMPAT_FSET;
+ ebh.rocompat_fset = JFFS2_EBH_ROCOMPAT_FSET;
+ ebh.erase_count = cpu_to_je32(0);
+ ebh.node_crc = cpu_to_je32(crc32(0, (unsigned char *)&ebh + sizeof(struct jffs2_unknown_node) + 4,
+ sizeof(struct jffs2_raw_ebh) - sizeof(struct jffs2_unknown_node) - 4));
+
+ if (isNAND) {
+ struct nand_oobinfo oobinfo;
+
+ if (ioctl(fd, MEMGETOOBSEL, &oobinfo) != 0) {
+ fprintf(stderr, "%s: %s: unable to get NAND oobinfo\n", exe_name, mtd_device);
+ exit(1);
+ }
+
+ /* Check for autoplacement */
+ if (oobinfo.useecc == MTD_NANDECC_AUTOPLACE) {
+ /* Get the position of the free bytes */
+ if (!oobinfo.oobfree[0][1]) {
+ fprintf (stderr, " Eeep. Autoplacement selected and no empty space in oob\n");
+ exit(1);
+ }
+ ebhpos = oobinfo.oobfree[0][0];
+ ebhlen = oobinfo.oobfree[0][1];
+ } else {
+ /* Legacy mode */
+ switch (meminfo.oobsize) {
+ case 8:
+ ebhpos = 6;
+ ebhlen = 2;
+ break;
+ case 16:
+ ebhpos = 8;
+ ebhlen = 8;
+ break;
+ case 64:
+ ebhpos = 16;
+ ebhlen = 8;
+ break;
+ }
+ }
+ pages_per_eraseblock = meminfo.erasesize/meminfo.oobblock;
+ available_oob_space = ebhlen * pages_per_eraseblock;
+ if (available_oob_space < sizeof(struct jffs2_raw_ebh)) {
+ fprintf(stderr, "The OOB area(%d) is not big enough to hold eraseblock_header(%d)", available_oob_space, sizeof(struct jffs2_raw_ebh));
+ exit(1);
+ }
+ }
+ }
+
+ for (erase.start = 0; erase.start < meminfo.size; erase.start += meminfo.erasesize) {
+ if (bbtest) {
+ loff_t offset = erase.start;
+ int ret = ioctl(fd, MEMGETBADBLOCK, &offset);
+ if (ret > 0) {
+ if (!quiet)
+ printf ("\nSkipping bad block at 0x%08x\n", erase.start);
+ continue;
+ } else if (ret < 0) {
+ if (errno == EOPNOTSUPP) {
+ bbtest = 0;
+ if (isNAND) {
+ fprintf(stderr, "%s: %s: Bad block check not available\n", exe_name, mtd_device);
+ exit(1);
+ }
+ } else {
+ fprintf(stderr, "\n%s: %s: MTD get bad block failed: %s\n", exe_name, mtd_device, strerror(errno));
+ exit(1);
+ }
+ }
+ }
+
+ if (!quiet) {
+ printf
+ ("\rErasing %d Kibyte @ %x -- %2llu %% complete.",
+ meminfo.erasesize / 1024, erase.start,
+ (unsigned long long)
+ erase.start * 100 / meminfo.size);
+ }
+ fflush(stdout);
+
+ if (ioctl(fd, MEMERASE, &erase) != 0) {
+ fprintf(stderr, "\n%s: %s: MTD Erase failure: %s\n", exe_name, mtd_device, strerror(errno));
+ continue;
+ }
+
+ /* format for JFFS2 ? */
+ if (!jffs2)
+ continue;
+
+ /* write cleanmarker */
+ if (isNAND) {
+ struct mtd_oob_buf oob;
+ uint32_t i = 0, written = 0;
+
+ while (written < sizeof(struct jffs2_raw_ebh)) {
+ oob.ptr = (unsigned char *) &ebh + written;
+ oob.start = erase.start + meminfo.oobblock*i + ebhpos;
+ oob.length = (sizeof(struct jffs2_raw_ebh) - written) < ebhlen ? (sizeof(struct jffs2_raw_ebh) - written) : ebhlen;
+ if (ioctl (fd, MEMWRITEOOB, &oob) != 0) {
+ fprintf(stderr, "\n%s: %s: MTD writeoob failure: %s\n", exe_name, mtd_device, strerror(errno));
+ break;
+ }
+ i++;
+ written += oob.length;
+ }
+ if (written < sizeof(struct jffs2_raw_ebh)) {
+ continue;
+ }
+ } else {
+ if (lseek (fd, erase.start, SEEK_SET) < 0) {
+ fprintf(stderr, "\n%s: %s: MTD lseek failure: %s\n", exe_name, mtd_device, strerror(errno));
+ continue;
+ }
+ if (write (fd , &ebh, sizeof (ebh)) != sizeof (ebh)) {
+ fprintf(stderr, "\n%s: %s: MTD write failure: %s\n", exe_name, mtd_device, strerror(errno));
+ continue;
+ }
+ }
+ if (!quiet)
+ printf (" Cleanmarker written at %x.", erase.start);
+ }
+ if (!quiet)
+ printf("\n");
+
+ return 0;
+}
+
+
+void process_options (int argc, char *argv[])
+{
+ int error = 0;
+
+ exe_name = argv[0];
+
+ for (;;) {
+ int option_index = 0;
+ static const char *short_options = "jq";
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 0},
+ {"version", no_argument, 0, 0},
+ {"jffs2", no_argument, 0, 'j'},
+ {"quiet", no_argument, 0, 'q'},
+ {"silent", no_argument, 0, 'q'},
+
+ {0, 0, 0, 0},
+ };
+
+ int c = getopt_long(argc, argv, short_options,
+ long_options, &option_index);
+ if (c == EOF) {
+ break;
+ }
+
+ switch (c) {
+ case 0:
+ switch (option_index) {
+ case 0:
+ display_help();
+ break;
+ case 1:
+ display_version();
+ break;
+ }
+ break;
+ case 'q':
+ quiet = 1;
+ break;
+ case 'j':
+ jffs2 = 1;
+ break;
+ case '?':
+ error = 1;
+ break;
+ }
+ }
+ if (optind == argc) {
+ fprintf(stderr, "%s: no MTD device specified\n", exe_name);
+ error = 1;
+ }
+ if (error) {
+ fprintf(stderr, "Try `%s --help' for more information.\n",
+ exe_name);
+ exit(1);
+ }
+
+ mtd_device = argv[optind];
+}
+
+
+void display_help (void)
+{
+ printf("Usage: %s [OPTION] MTD_DEVICE\n"
+ "Erases all of the specified MTD device.\n"
+ "\n"
+ " -j, --jffs2 format the device for jffs2\n"
+ " -q, --quiet don't display progress messages\n"
+ " --silent same as --quiet\n"
+ " --help display this help and exit\n"
+ " --version output version information and exit\n",
+ exe_name);
+ exit(0);
+}
+
+
+void display_version (void)
+{
+ printf(PROGRAM " " VERSION "\n"
+ "\n"
+ "Copyright (C) 2000 Arcom Control Systems Ltd\n"
+ "\n"
+ PROGRAM " comes with NO WARRANTY\n"
+ "to the extent permitted by law.\n"
+ "\n"
+ "You may redistribute copies of " PROGRAM "\n"
+ "under the terms of the GNU General Public Licence.\n"
+ "See the file `COPYING' for more information.\n");
+ exit(0);
+}
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