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.
Signed-off-by: Benedigt Spranger <[email protected]> Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Index: busybox/include/applets.h =================================================================== --- busybox.orig/include/applets.h +++ busybox/include/applets.h @@ -155,6 +155,7 @@ USE_FDISK(APPLET(fdisk, _BB_DIR_SBIN, _B USE_FEATURE_GREP_FGREP_ALIAS(APPLET_ODDNAME(fgrep, grep, _BB_DIR_BIN, _BB_SUID_NEVER, fgrep)) USE_FIND(APPLET_NOEXEC(find, find, _BB_DIR_USR_BIN, _BB_SUID_NEVER, find)) USE_FINDFS(APPLET(findfs, _BB_DIR_SBIN, _BB_SUID_MAYBE)) +USE_FLASH_ERASEALL(APPLET_ODDNAME(flash_eraseall, flash_eraseall, _BB_DIR_USR_SBIN, _BB_SUID_NEVER, flash_eraseall)) USE_FOLD(APPLET(fold, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_FREE(APPLET(free, _BB_DIR_USR_BIN, _BB_SUID_NEVER)) USE_FREERAMDISK(APPLET(freeramdisk, _BB_DIR_SBIN, _BB_SUID_NEVER)) Index: busybox/include/usage.h =================================================================== --- busybox.orig/include/usage.h +++ busybox/include/usage.h @@ -1217,6 +1217,12 @@ "$ find / -name passwd\n" \ "/etc/passwd\n" +#define flash_eraseall_trivial_usage \ + "[-jq] MTD_DEVICE" +#define flash_eraseall_full_usage "\n\n" \ + " -j format the device for jffs2\n" \ + " -q don't display progress messages" + #define fold_trivial_usage \ "[-bs] [-w WIDTH] [FILE]" #define fold_full_usage "\n\n" \ Index: busybox/miscutils/Config.in =================================================================== --- busybox.orig/miscutils/Config.in +++ busybox/miscutils/Config.in @@ -245,6 +245,13 @@ config FBSPLASH "NN" (ASCII decimal number) - percentage to show on progress bar "exit" - well you guessed it +config FLASH_ERASEALL + bool "flash_eraseall" + default n + help + The flash_eraseall binary from mtd-utils as of git head c4c6a59eb. + This little utility can be used to erase the whole mtd device. + config IONICE bool "ionice" default n Index: busybox/miscutils/Kbuild =================================================================== --- busybox.orig/miscutils/Kbuild +++ busybox/miscutils/Kbuild @@ -16,6 +16,7 @@ lib-$(CONFIG_DEVFSD) += devfsd.o lib-$(CONFIG_DEVMEM) += devmem.o lib-$(CONFIG_EJECT) += eject.o lib-$(CONFIG_FBSPLASH) += fbsplash.o +lib-$(CONFIG_FLASH_ERASEALL) += flash_eraseall.o lib-$(CONFIG_IONICE) += ionice.o lib-$(CONFIG_HDPARM) += hdparm.o lib-$(CONFIG_INOTIFYD) += inotifyd.o Index: busybox/miscutils/flash_eraseall.c =================================================================== --- /dev/null +++ busybox/miscutils/flash_eraseall.c @@ -0,0 +1,198 @@ +/* eraseall.c -- erase the whole of a MTD device + + Ported to busybox from mtd-utils. + + 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 + */ + +#include "libbb.h" + +#include <mtd/mtd-user.h> +#include <mtd/jffs2-user.h> + +#define OPTION_J (1 << 0) +#define OPTION_Q (1 << 1) + +static struct jffs2_unknown_node cleanmarker; +int target_endian = __BYTE_ORDER; +static uint32_t *crc32_table; + +static uint32_t crc32(uint32_t val, const void *ss, int len) +{ + const unsigned char *s = ss; + while (--len >= 0) + val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8); + return val; +} + +static void show_progress (mtd_info_t *meminfo, erase_info_t *erase) +{ + printf("\rErasing %d Kibyte @ %x -- %2llu %% complete.", + meminfo->erasesize / 1024, erase->start, + (unsigned long long) erase->start * 100 / meminfo->size); + fflush(stdout); +} + +int flash_eraseall_main(int argc, char **argv); +int flash_eraseall_main(int argc, char **argv) +{ + int quiet; + int jffs2; + mtd_info_t meminfo; + int fd, clmpos = 0, clmlen = 8; + erase_info_t erase; + struct stat st; + int isNAND, bbtest = 1; + unsigned int flags; + char *mtd_name; + + if (argc < 2) { + bb_show_usage(); + } + + flags = getopt32(argv, "jq"); + jffs2 = flags & OPTION_J; + quiet = flags & OPTION_Q; + + mtd_name = *(argv + optind); + + xstat(mtd_name, &st); + if (!S_ISCHR(st.st_mode)) { + bb_error_msg_and_die("%s: not a char device", mtd_name); + } + + fd = xopen(mtd_name, O_RDWR); + + xioctl(fd, MEMGETINFO, &meminfo); + + erase.length = meminfo.erasesize; + isNAND = meminfo.type == MTD_NANDFLASH ? 1 : 0; + + if (jffs2) { + crc32_table = crc32_filltable(NULL, 0); + + cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK); + cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER); + if (!isNAND) + cleanmarker.totlen = cpu_to_je32 (sizeof (struct jffs2_unknown_node)); + else { + struct nand_oobinfo oobinfo; + + xioctl(fd, MEMGETOOBSEL, &oobinfo); + + /* 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"); + 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); + } + + cleanmarker.hdr_crc = cpu_to_je32 (crc32 (0, &cleanmarker, sizeof (struct jffs2_unknown_node) - 4)); + } + + for (erase.start = 0; erase.start < meminfo.size; + erase.start += meminfo.erasesize) { + if (bbtest) { + int ret; + + loff_t offset = erase.start; + 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) { + /* Black block table is not available on certain flash + * types e.g. NOR + */ + if (errno == EOPNOTSUPP) { + bbtest = 0; + if (isNAND) { + fprintf(stderr, "%s: %s: Bad block check not available\n", + argv[0], mtd_name); + return 1; + } + } else { + fprintf(stderr, "\n%s: %s: MTD get bad block failed: %s\n", + argv[0], mtd_name, strerror(errno)); + return 1; + } + } + } + + if (!quiet) + show_progress(&meminfo, &erase); + + xioctl(fd, MEMERASE, &erase); + + /* format for JFFS2 ? */ + if (!jffs2) + continue; + + /* write cleanmarker */ + if (isNAND) { + struct mtd_oob_buf oob; + oob.ptr = (unsigned char *) &cleanmarker; + oob.start = erase.start + clmpos; + oob.length = clmlen; + xioctl (fd, MEMWRITEOOB, &oob); + } else { + if (lseek (fd, erase.start, SEEK_SET) < 0) { + fprintf(stderr, "\n%s: MTD lseek failure: %s\n", mtd_name, strerror(errno)); + continue; + } + if (write (fd , &cleanmarker, sizeof (cleanmarker)) != sizeof (cleanmarker)) { + fprintf(stderr, "\n%s: MTD write failure: %s\n", mtd_name, strerror(errno)); + continue; + } + } + if (!quiet) + printf (" Cleanmarker written at %x.", erase.start); + } + if (!quiet) { + show_progress(&meminfo, &erase); + printf("\n"); + } + + return 0; +} _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
