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authorGravatar Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>2009-02-18 13:23:46 +0000
committerGravatar Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>2009-02-18 13:23:46 +0000
commit0d22d1755c2c55ad45b01458bbf2f09aab4308d2 (patch)
treef5316fd29ce4e9848e9e588be46e5e2be333ec5b
parent051fdb9e7a248bf24bb845313e324421992abf61 (diff)
downloadbusybox-0d22d1755c2c55ad45b01458bbf2f09aab4308d2.tar.gz
busybox-0d22d1755c2c55ad45b01458bbf2f09aab4308d2.tar.bz2
- 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>
-rw-r--r--Makefile.flags1
-rw-r--r--include/applets.h2
-rw-r--r--include/usage.h8
-rw-r--r--miscutils/Config.in7
-rw-r--r--miscutils/Kbuild1
-rw-r--r--miscutils/flash_eraseall.c188
6 files changed, 207 insertions, 0 deletions
diff --git a/Makefile.flags b/Makefile.flags
index ad8d5e1f9..4c24ad690 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -23,6 +23,7 @@ CFLAGS += $(call cc-option,-Wwrite-strings,)
CFLAGS += $(call cc-option,-Wundef,)
CFLAGS += $(call cc-option,-Wstrict-prototypes,)
CFLAGS += $(call cc-option,-Wunused -Wunused-parameter,)
+CFLAGS += $(call cc-option,-Wunused-function -Wunused-value,)
CFLAGS += $(call cc-option,-Wmissing-prototypes -Wmissing-declarations,)
# warn about C99 declaration after statement
CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
diff --git a/include/applets.h b/include/applets.h
index af21a0d4a..15dcbdf5e 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -155,6 +155,8 @@ USE_FDISK(APPLET(fdisk, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_FEATURE_GREP_FGREP_ALIAS(APPLET_ODDNAME(fgrep, grep, _BB_DIR_BIN, _BB_SUID_NEVER, fgrep))
USE_FIND(APPLET_NOEXEC(find, find, _BB_DIR_USR_BIN, _BB_SUID_NEVER, find))
USE_FINDFS(APPLET(findfs, _BB_DIR_SBIN, _BB_SUID_MAYBE))
+//USE_FLASH_ERASEALL(APPLET_ODDNAME(flash_eraseall, flash_eraseall, _BB_DIR_USR_SBIN, _BB_SUID_NEVER, flash_eraseall))
+USE_FLASH_ERASEALL(APPLET(flash_eraseall, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_FOLD(APPLET(fold, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_FREE(APPLET(free, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_FREERAMDISK(APPLET(freeramdisk, _BB_DIR_SBIN, _BB_SUID_NEVER))
diff --git a/include/usage.h b/include/usage.h
index 52af47e58..0e606609d 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1217,6 +1217,14 @@
"$ find / -name passwd\n" \
"/etc/passwd\n"
+#define flash_eraseall_trivial_usage \
+ "[-jq] MTD_DEVICE"
+#define flash_eraseall_full_usage "\n\n" \
+ "Erase an MTD device\n" \
+ "\nOptions:" \
+ "\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" \
diff --git a/miscutils/Config.in b/miscutils/Config.in
index c8d7253d8..62be3e63e 100644
--- a/miscutils/Config.in
+++ b/miscutils/Config.in
@@ -250,6 +250,13 @@ 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 utility is used to erase the whole MTD device.
+
config IONICE
bool "ionice"
default n
diff --git a/miscutils/Kbuild b/miscutils/Kbuild
index 7665130e5..23d7d8d49 100644
--- a/miscutils/Kbuild
+++ b/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
diff --git a/miscutils/flash_eraseall.c b/miscutils/flash_eraseall.c
new file mode 100644
index 000000000..79028d780
--- /dev/null
+++ b/miscutils/flash_eraseall.c
@@ -0,0 +1,188 @@
+/* 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)
+
+int target_endian = __BYTE_ORDER;
+
+static uint32_t crc32(uint32_t val, const void *ss, int len,
+ uint32_t *crc32_table)
+{
+ 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) MAIN_EXTERNALLY_VISIBLE;
+int flash_eraseall_main(int argc, char **argv)
+{
+ struct jffs2_unknown_node cleanmarker;
+ 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;
+
+ opt_complementary = "=1";
+ flags = getopt32(argv, "jq");
+
+ 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 (flags & OPTION_J) {
+ uint32_t *crc32_table;
+
+ 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])
+ bb_error_msg_and_die("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 (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,
+ crc32_table));
+ }
+
+ 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 (!(flags & OPTION_Q))
+ bb_info_msg("\nSkipping bad block at 0x%08x", 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)
+ bb_error_msg_and_die("%s: Bad block check not available",
+ mtd_name);
+ } else {
+ bb_error_msg_and_die("\n%s: MTD get bad block failed: %s",
+ mtd_name, strerror(errno));
+ }
+ }
+ }
+
+ if (!(flags & OPTION_Q))
+ show_progress(&meminfo, &erase);
+
+ xioctl(fd, MEMERASE, &erase);
+
+ /* format for JFFS2 ? */
+ if (!(flags & OPTION_J))
+ 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) {
+ bb_error_msg("\n%s: MTD lseek failure: %s", mtd_name, strerror(errno));
+ continue;
+ }
+ if (write (fd , &cleanmarker, sizeof (cleanmarker)) != sizeof (cleanmarker)) {
+ bb_error_msg("\n%s: MTD write failure: %s", mtd_name, strerror(errno));
+ continue;
+ }
+ }
+ if (!(flags & OPTION_Q))
+ printf(" Cleanmarker written at %x.", erase.start);
+ }
+ if (!(flags & OPTION_Q)) {
+ show_progress(&meminfo, &erase);
+ printf("\n");
+ }
+
+ return EXIT_SUCCESS;
+}