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authorDongsheng Yang <yangds.fnst@cn.fujitsu.com>2015-10-31 11:12:01 +0800
committerBrian Norris <computersforpeace@gmail.com>2015-11-11 14:38:40 -0800
commit7d81790ced345585b1e647ca9d0f6678e7062fa4 (patch)
tree02f61270c7a0fff7bb6b2e28f247a3d2fd6ff490 /flash_erase.c
parent344753f2aacb94d98ce238f81fc4a4b6ef6adea9 (diff)
mtd-utils: Restructure the mtd-utils source.
* There is no code modification in this commit, only moving * the files to proper place. The user tools looks a little messy as we place almost the all tools in the root directory of mtd-utils. To make it more clear, I propose to introduce the following structure for our source code. mtd-utils/ |-- lib |-- include |-- misc-utils |-- jffsX-utils |-- nand-utils |-- nor-utils |-- ubi-utils |-- ubifs-utils `-- tests Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'flash_erase.c')
-rw-r--r--flash_erase.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/flash_erase.c b/flash_erase.c
deleted file mode 100644
index 933373a..0000000
--- a/flash_erase.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/* flash_erase.c -- erase MTD devices
-
- Copyright (C) 2000 Arcom Control System Ltd
- Copyright (C) 2010 Mike Frysinger <vapier@gentoo.org>
-
- 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
- */
-
-#define PROGRAM_NAME "flash_erase"
-
-#include <inttypes.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <stdint.h>
-#include <getopt.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-
-#include <common.h>
-#include <crc32.h>
-#include <libmtd.h>
-
-#include <mtd/mtd-user.h>
-#include <mtd/jffs2-user.h>
-
-static const char *mtd_device;
-
-static int quiet; /* true -- don't output progress */
-static int jffs2; /* format for jffs2 usage */
-static int noskipbad; /* do not skip bad blocks */
-static int unlock; /* unlock sectors before erasing */
-
-static struct jffs2_unknown_node cleanmarker;
-int target_endian = __BYTE_ORDER;
-
-static void show_progress(struct mtd_dev_info *mtd, off_t start, int eb,
- int eb_start, int eb_cnt)
-{
- bareverbose(!quiet, "\rErasing %d Kibyte @ %"PRIxoff_t" -- %2i %% complete ",
- mtd->eb_size / 1024, start, ((eb - eb_start) * 100) / eb_cnt);
- fflush(stdout);
-}
-
-static void display_help (void)
-{
- printf("Usage: %s [options] MTD_DEVICE <start offset> <block count>\n"
- "Erase blocks of the specified MTD device.\n"
- "Specify a count of 0 to erase to end of device.\n"
- "\n"
- " -j, --jffs2 format the device for jffs2\n"
- " -N, --noskipbad don't skip bad blocks\n"
- " -u, --unlock unlock sectors before erasing\n"
- " -q, --quiet do not display progress messages\n"
- " --silent same as --quiet\n"
- " --help display this help and exit\n"
- " --version output version information and exit\n",
- PROGRAM_NAME);
-}
-
-static void display_version (void)
-{
- printf("%1$s version " VERSION "\n"
- "\n"
- "Copyright (C) 2000 Arcom Control Systems Ltd\n"
- "\n"
- "%1$s comes with NO WARRANTY\n"
- "to the extent permitted by law.\n"
- "\n"
- "You may redistribute copies of %1$s\n"
- "under the terms of the GNU General Public Licence.\n"
- "See the file `COPYING' for more information.\n",
- PROGRAM_NAME);
-}
-
-int main(int argc, char *argv[])
-{
- libmtd_t mtd_desc;
- struct mtd_dev_info mtd;
- int fd, clmpos = 0, clmlen = 8;
- unsigned long long start;
- unsigned int eb, eb_start, eb_cnt;
- bool isNAND;
- int error = 0;
- off_t offset = 0;
-
- /*
- * Process user arguments
- */
- for (;;) {
- int option_index = 0;
- static const char *short_options = "jNqu";
- static const struct option long_options[] = {
- {"help", no_argument, 0, 0},
- {"version", no_argument, 0, 0},
- {"jffs2", no_argument, 0, 'j'},
- {"noskipbad", no_argument, 0, 'N'},
- {"quiet", no_argument, 0, 'q'},
- {"silent", no_argument, 0, 'q'},
- {"unlock", no_argument, 0, 'u'},
-
- {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();
- return 0;
- case 1:
- display_version();
- return 0;
- }
- break;
- case 'j':
- jffs2 = 1;
- break;
- case 'N':
- noskipbad = 1;
- break;
- case 'q':
- quiet = 1;
- break;
- case 'u':
- unlock = 1;
- break;
- case '?':
- error = 1;
- break;
- }
- }
- switch (argc - optind) {
- case 3:
- mtd_device = argv[optind];
- start = simple_strtoull(argv[optind + 1], &error);
- eb_cnt = simple_strtoul(argv[optind + 2], &error);
- break;
- default:
- case 0:
- errmsg("no MTD device specified");
- case 1:
- errmsg("no start erase block specified");
- case 2:
- errmsg("no erase block count specified");
- error = 1;
- break;
- }
- if (error)
- return errmsg("Try `--help' for more information");
-
- /*
- * Locate MTD and prepare for erasure
- */
- mtd_desc = libmtd_open();
- if (mtd_desc == NULL)
- return errmsg("can't initialize libmtd");
-
- if ((fd = open(mtd_device, O_RDWR)) < 0)
- return sys_errmsg("%s", mtd_device);
-
- if (mtd_get_dev_info(mtd_desc, mtd_device, &mtd) < 0)
- return errmsg("mtd_get_dev_info failed");
-
- if (jffs2 && mtd.type == MTD_MLCNANDFLASH)
- return errmsg("JFFS2 cannot support MLC NAND.");
-
- eb_start = start / mtd.eb_size;
-
- isNAND = mtd.type == MTD_NANDFLASH || mtd.type == MTD_MLCNANDFLASH;
-
- if (jffs2) {
- cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
- cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
- if (!isNAND)
- cleanmarker.totlen = cpu_to_je32(sizeof(cleanmarker));
- else {
- struct nand_oobinfo oobinfo;
-
- if (ioctl(fd, MEMGETOOBSEL, &oobinfo) != 0)
- return sys_errmsg("%s: unable to get NAND oobinfo", mtd_device);
-
- /* Check for autoplacement */
- if (oobinfo.useecc == MTD_NANDECC_AUTOPLACE) {
- /* Get the position of the free bytes */
- if (!oobinfo.oobfree[0][1])
- return errmsg(" Eeep. Autoplacement selected and no empty space in oob");
- clmpos = oobinfo.oobfree[0][0];
- clmlen = oobinfo.oobfree[0][1];
- if (clmlen > 8)
- clmlen = 8;
- } else {
- /* Legacy mode */
- switch (mtd.oob_size) {
- 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);
- }
- cleanmarker.hdr_crc = cpu_to_je32(mtd_crc32(0, &cleanmarker, sizeof(cleanmarker) - 4));
- }
-
- /*
- * Now do the actual erasing of the MTD device
- */
- if (eb_cnt == 0)
- eb_cnt = (mtd.size / mtd.eb_size) - eb_start;
-
- for (eb = eb_start; eb < eb_start + eb_cnt; eb++) {
- offset = (off_t)eb * mtd.eb_size;
-
- if (!noskipbad) {
- int ret = mtd_is_bad(&mtd, fd, eb);
- if (ret > 0) {
- verbose(!quiet, "Skipping bad block at %08"PRIxoff_t, offset);
- continue;
- } else if (ret < 0) {
- if (errno == EOPNOTSUPP) {
- noskipbad = 1;
- if (isNAND)
- return errmsg("%s: Bad block check not available", mtd_device);
- } else
- return sys_errmsg("%s: MTD get bad block failed", mtd_device);
- }
- }
-
- show_progress(&mtd, offset, eb, eb_start, eb_cnt);
-
- if (unlock) {
- if (mtd_unlock(&mtd, fd, eb) != 0) {
- sys_errmsg("%s: MTD unlock failure", mtd_device);
- continue;
- }
- }
-
- if (mtd_erase(mtd_desc, &mtd, fd, eb) != 0) {
- sys_errmsg("%s: MTD Erase failure", mtd_device);
- continue;
- }
-
- /* format for JFFS2 ? */
- if (!jffs2)
- continue;
-
- /* write cleanmarker */
- if (isNAND) {
- if (mtd_write_oob(mtd_desc, &mtd, fd, (uint64_t)offset + clmpos, clmlen, &cleanmarker) != 0) {
- sys_errmsg("%s: MTD writeoob failure", mtd_device);
- continue;
- }
- } else {
- if (pwrite(fd, &cleanmarker, sizeof(cleanmarker), (loff_t)offset) != sizeof(cleanmarker)) {
- sys_errmsg("%s: MTD write failure", mtd_device);
- continue;
- }
- }
- verbose(!quiet, " Cleanmarker written at %"PRIxoff_t, offset);
- }
- show_progress(&mtd, offset, eb, eb_start, eb_cnt);
- bareverbose(!quiet, "\n");
-
- return 0;
-}