mirror of
https://github.com/sheumann/hush.git
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- add flash_eraseall
This is the result after converting mtd-utils' flash_eraseall to BB. The functionality given by this patch almost the same except that this one does not support long options. I needed this tool a system which does not have a lot of flash for RFS and merging this into BB as the only way out. [bigeasy@]$ ./scripts/bloat-o-meter bb_wo_fl bb_w_fl function old new delta flash_eraseall_main - 1072 +1072 show_progress - 62 +62 packed_usage 25156 25176 +20 applet_names 1958 1973 +15 applet_main 2352 2360 +8 target_endian - 4 +4 applet_nameofs 588 590 +2 applet_install_loc 147 148 +1 ------------------------------------------------------------------------------ (add/remove: 3/0 grow/shrink: 5/0 up/down: 1184/0) Total: 1184 bytes [bigeasy@]$ size miscutils/flash_eraseall.o text data bss dec hex filename 1586 4 0 1590 636 miscutils/flash_eraseall.o Signed-off-by: Benedigt Spranger <b.spranger@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
This commit is contained in:
Bernhard Reutner-Fischer
parent
051fdb9e7a
commit
0d22d1755c
@ -23,6 +23,7 @@ CFLAGS += $(call cc-option,-Wwrite-strings,)
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CFLAGS += $(call cc-option,-Wundef,)
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CFLAGS += $(call cc-option,-Wstrict-prototypes,)
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CFLAGS += $(call cc-option,-Wunused -Wunused-parameter,)
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CFLAGS += $(call cc-option,-Wunused-function -Wunused-value,)
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CFLAGS += $(call cc-option,-Wmissing-prototypes -Wmissing-declarations,)
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# warn about C99 declaration after statement
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CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
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@ -155,6 +155,8 @@ USE_FDISK(APPLET(fdisk, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_FEATURE_GREP_FGREP_ALIAS(APPLET_ODDNAME(fgrep, grep, _BB_DIR_BIN, _BB_SUID_NEVER, fgrep))
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USE_FIND(APPLET_NOEXEC(find, find, _BB_DIR_USR_BIN, _BB_SUID_NEVER, find))
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USE_FINDFS(APPLET(findfs, _BB_DIR_SBIN, _BB_SUID_MAYBE))
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//USE_FLASH_ERASEALL(APPLET_ODDNAME(flash_eraseall, flash_eraseall, _BB_DIR_USR_SBIN, _BB_SUID_NEVER, flash_eraseall))
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USE_FLASH_ERASEALL(APPLET(flash_eraseall, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
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USE_FOLD(APPLET(fold, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_FREE(APPLET(free, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_FREERAMDISK(APPLET(freeramdisk, _BB_DIR_SBIN, _BB_SUID_NEVER))
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@ -1217,6 +1217,14 @@
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"$ find / -name passwd\n" \
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"/etc/passwd\n"
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#define flash_eraseall_trivial_usage \
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"[-jq] MTD_DEVICE"
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#define flash_eraseall_full_usage "\n\n" \
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"Erase an MTD device\n" \
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"\nOptions:" \
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"\n -j format the device for jffs2" \
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"\n -q don't display progress messages"
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#define fold_trivial_usage \
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"[-bs] [-w WIDTH] [FILE]"
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#define fold_full_usage "\n\n" \
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@ -250,6 +250,13 @@ config FBSPLASH
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"NN" (ASCII decimal number) - percentage to show on progress bar
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"exit" - well you guessed it
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config FLASH_ERASEALL
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bool "flash_eraseall"
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default n
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help
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The flash_eraseall binary from mtd-utils as of git head c4c6a59eb.
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This utility is used to erase the whole MTD device.
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config IONICE
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bool "ionice"
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default n
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@ -16,6 +16,7 @@ lib-$(CONFIG_DEVFSD) += devfsd.o
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lib-$(CONFIG_DEVMEM) += devmem.o
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lib-$(CONFIG_EJECT) += eject.o
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lib-$(CONFIG_FBSPLASH) += fbsplash.o
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lib-$(CONFIG_FLASH_ERASEALL) += flash_eraseall.o
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lib-$(CONFIG_IONICE) += ionice.o
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lib-$(CONFIG_HDPARM) += hdparm.o
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lib-$(CONFIG_INOTIFYD) += inotifyd.o
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188
miscutils/flash_eraseall.c
Normal file
188
miscutils/flash_eraseall.c
Normal file
@ -0,0 +1,188 @@
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/* eraseall.c -- erase the whole of a MTD device
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Ported to busybox from mtd-utils.
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Copyright (C) 2000 Arcom Control System Ltd
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Renamed to flash_eraseall.c
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include "libbb.h"
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#include <mtd/mtd-user.h>
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#include <mtd/jffs2-user.h>
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#define OPTION_J (1 << 0)
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#define OPTION_Q (1 << 1)
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int target_endian = __BYTE_ORDER;
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static uint32_t crc32(uint32_t val, const void *ss, int len,
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uint32_t *crc32_table)
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{
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const unsigned char *s = ss;
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while (--len >= 0)
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val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8);
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return val;
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}
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static void show_progress(mtd_info_t *meminfo, erase_info_t *erase)
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{
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printf("\rErasing %d Kibyte @ %x -- %2llu %% complete.",
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meminfo->erasesize / 1024, erase->start,
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(unsigned long long) erase->start * 100 / meminfo->size);
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fflush(stdout);
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}
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int flash_eraseall_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int flash_eraseall_main(int argc, char **argv)
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{
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struct jffs2_unknown_node cleanmarker;
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mtd_info_t meminfo;
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int fd, clmpos = 0, clmlen = 8;
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erase_info_t erase;
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struct stat st;
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int isNAND, bbtest = 1;
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unsigned int flags;
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char *mtd_name;
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opt_complementary = "=1";
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flags = getopt32(argv, "jq");
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mtd_name = *(argv + optind);
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xstat(mtd_name, &st);
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if (!S_ISCHR(st.st_mode))
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bb_error_msg_and_die("%s: not a char device", mtd_name);
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fd = xopen(mtd_name, O_RDWR);
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xioctl(fd, MEMGETINFO, &meminfo);
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erase.length = meminfo.erasesize;
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isNAND = meminfo.type == MTD_NANDFLASH ? 1 : 0;
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if (flags & OPTION_J) {
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uint32_t *crc32_table;
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crc32_table = crc32_filltable(NULL, 0);
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cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
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cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
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if (!isNAND)
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cleanmarker.totlen = cpu_to_je32 (sizeof (struct jffs2_unknown_node));
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else {
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struct nand_oobinfo oobinfo;
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xioctl(fd, MEMGETOOBSEL, &oobinfo);
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/* Check for autoplacement */
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if (oobinfo.useecc == MTD_NANDECC_AUTOPLACE) {
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/* Get the position of the free bytes */
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if (!oobinfo.oobfree[0][1])
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bb_error_msg_and_die("Autoplacement selected and no empty space in oob");
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clmpos = oobinfo.oobfree[0][0];
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clmlen = oobinfo.oobfree[0][1];
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if (clmlen > 8)
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clmlen = 8;
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} else {
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/* Legacy mode */
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switch (meminfo.oobsize) {
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case 8:
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clmpos = 6;
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clmlen = 2;
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break;
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case 16:
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clmpos = 8;
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clmlen = 8;
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break;
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case 64:
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clmpos = 16;
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clmlen = 8;
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break;
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}
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}
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cleanmarker.totlen = cpu_to_je32(8);
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}
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cleanmarker.hdr_crc = cpu_to_je32(crc32(0, &cleanmarker, sizeof(struct jffs2_unknown_node) - 4,
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crc32_table));
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}
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for (erase.start = 0; erase.start < meminfo.size;
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erase.start += meminfo.erasesize) {
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if (bbtest) {
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int ret;
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loff_t offset = erase.start;
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ret = ioctl(fd, MEMGETBADBLOCK, &offset);
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if (ret > 0) {
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if (!(flags & OPTION_Q))
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bb_info_msg("\nSkipping bad block at 0x%08x", erase.start);
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continue;
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} else if (ret < 0) {
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/* Black block table is not available on certain flash
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* types e.g. NOR
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*/
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if (errno == EOPNOTSUPP) {
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bbtest = 0;
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if (isNAND)
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bb_error_msg_and_die("%s: Bad block check not available",
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mtd_name);
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} else {
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bb_error_msg_and_die("\n%s: MTD get bad block failed: %s",
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mtd_name, strerror(errno));
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}
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}
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}
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if (!(flags & OPTION_Q))
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show_progress(&meminfo, &erase);
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xioctl(fd, MEMERASE, &erase);
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/* format for JFFS2 ? */
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if (!(flags & OPTION_J))
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continue;
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/* write cleanmarker */
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if (isNAND) {
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struct mtd_oob_buf oob;
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oob.ptr = (unsigned char *) &cleanmarker;
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oob.start = erase.start + clmpos;
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oob.length = clmlen;
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xioctl (fd, MEMWRITEOOB, &oob);
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} else {
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if (lseek (fd, erase.start, SEEK_SET) < 0) {
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bb_error_msg("\n%s: MTD lseek failure: %s", mtd_name, strerror(errno));
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continue;
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}
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if (write (fd , &cleanmarker, sizeof (cleanmarker)) != sizeof (cleanmarker)) {
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bb_error_msg("\n%s: MTD write failure: %s", mtd_name, strerror(errno));
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continue;
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}
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}
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if (!(flags & OPTION_Q))
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printf(" Cleanmarker written at %x.", erase.start);
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}
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if (!(flags & OPTION_Q)) {
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show_progress(&meminfo, &erase);
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printf("\n");
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}
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return EXIT_SUCCESS;
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}
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