From 7d81790ced345585b1e647ca9d0f6678e7062fa4 Mon Sep 17 00:00:00 2001 From: Dongsheng Yang Date: Sat, 31 Oct 2015 11:12:01 +0800 Subject: 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 Signed-off-by: Brian Norris --- flash_erase.c | 295 ---------------------------------------------------------- 1 file changed, 295 deletions(-) delete mode 100644 flash_erase.c (limited to 'flash_erase.c') 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 - - 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include - -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 \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; -} -- cgit v1.2.3