mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 08:51:13 +00:00
clean up mtd, fix up trx header when integrating jffs2 data on broadcom devices
SVN-Revision: 12655
This commit is contained in:
parent
6ce27efe73
commit
bbd9eb4669
@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/kernel.mk
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PKG_NAME:=mtd
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PKG_RELEASE:=7
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PKG_RELEASE:=8
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PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)
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@ -32,10 +32,13 @@ define Build/Prepare
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$(CP) ./src/* $(PKG_BUILD_DIR)/
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endef
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target=$(firstword $(subst -, ,$(BOARD)))
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define Build/Compile
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$(MAKE) -C $(PKG_BUILD_DIR) \
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$(TARGET_CONFIGURE_OPTS) \
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CFLAGS="$(TARGET_CFLAGS) -Dtarget_$(firstword $(subst -, ,$(BOARD)))=1"
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TARGET=$(target) \
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CFLAGS="$(TARGET_CFLAGS) -Dtarget_$(target)=1 -Wall"
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endef
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define Package/mtd/install
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@ -1,6 +1,10 @@
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CC = gcc
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CFLAGS += -Wall
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mtd: mtd.o jffs2.o crc32.o
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obj = mtd.o jffs2.o crc32.o
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obj.brcm = trx.o
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obj.brcm47xx = $(obj.brcm)
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mtd: $(obj) $(obj.$(TARGET))
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clean:
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rm -f *.o jffs2
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@ -140,7 +140,6 @@ static void add_file(const char *name, int parent)
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struct stat st;
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char wbuf[4096];
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const char *fname;
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FILE *f;
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if (stat(name, &st)) {
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fprintf(stderr, "File %s does not exist\n", name);
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@ -210,7 +209,7 @@ static void add_file(const char *name, int parent)
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close(fd);
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}
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int mtd_replace_jffs2(int fd, int ofs, const char *filename)
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int mtd_replace_jffs2(const char *mtd, int fd, int ofs, const char *filename)
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{
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outfd = fd;
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mtdofs = ofs;
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@ -226,6 +225,11 @@ int mtd_replace_jffs2(int fd, int ofs, const char *filename)
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add_data(JFFS2_EOF, sizeof(JFFS2_EOF) - 1);
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pad(erasesize);
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free(buf);
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#ifdef target_brcm
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trx_fixup(outfd, mtd);
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#endif
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return 0;
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}
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void mtd_parse_jffs2data(const char *buf, const char *dir)
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@ -258,7 +262,6 @@ void mtd_parse_jffs2data(const char *buf, const char *dir)
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int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir)
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{
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int err = -1, fdeof = 0;
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off_t offset;
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outfd = mtd_check_open(mtd);
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if (!outfd)
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@ -326,6 +329,10 @@ int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir)
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err = 0;
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#ifdef target_brcm
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trx_fixup(outfd, mtd);
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#endif
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done:
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close(outfd);
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if (buf)
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@ -46,21 +46,9 @@
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#include "mtd-api.h"
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#include "mtd.h"
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#ifdef target_brcm47xx
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#define target_brcm 1
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#endif
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#define TRX_MAGIC 0x30524448 /* "HDR0" */
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#define MAX_ARGS 8
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#define DEBUG
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#define JFFS2_DEFAULT_DIR "" /* directory name without /, empty means root dir */
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#define SYSTYPE_UNKNOWN 0
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#define SYSTYPE_BROADCOM 1
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/* to be continued */
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struct trx_header {
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uint32_t magic; /* "HDR0" */
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uint32_t len; /* Length of file including header */
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@ -77,7 +65,7 @@ int quiet;
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int mtdsize = 0;
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int erasesize = 0;
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int mtd_open(const char *mtd)
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int mtd_open(const char *mtd, bool block)
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{
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FILE *fp;
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char dev[PATH_MAX];
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@ -88,9 +76,9 @@ int mtd_open(const char *mtd)
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if ((fp = fopen("/proc/mtd", "r"))) {
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while (fgets(dev, sizeof(dev), fp)) {
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if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
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snprintf(dev, sizeof(dev), "/dev/mtd/%d", i);
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snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
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if ((ret=open(dev, flags))<0) {
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snprintf(dev, sizeof(dev), "/dev/mtd%d", i);
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snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
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ret=open(dev, flags);
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}
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fclose(fp);
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@ -108,7 +96,7 @@ int mtd_check_open(const char *mtd)
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struct mtd_info_user mtdInfo;
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int fd;
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fd = mtd_open(mtd);
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fd = mtd_open(mtd, false);
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if(fd < 0) {
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fprintf(stderr, "Could not open mtd device: %s\n", mtd);
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return 0;
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@ -136,68 +124,22 @@ int mtd_erase_block(int fd, int offset)
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fprintf(stderr, "Erasing mtd failed.\n");
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exit(1);
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}
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return 0;
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}
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int mtd_write_buffer(int fd, const char *buf, int offset, int length)
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{
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lseek(fd, offset, SEEK_SET);
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write(fd, buf, length);
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return 0;
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}
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#ifdef target_brcm
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static int
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image_check_brcm(int imagefd, const char *mtd)
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{
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struct trx_header *trx = (struct trx_header *) buf;
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int fd;
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if (strcmp(mtd, "linux") != 0)
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return 1;
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buflen = read(imagefd, buf, 32);
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if (buflen < 32) {
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fprintf(stdout, "Could not get image header, file too small (%ld bytes)\n", buflen);
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return 0;
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}
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if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
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if (quiet < 2) {
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fprintf(stderr, "Bad trx header\n");
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fprintf(stderr, "This is not the correct file format; refusing to flash.\n"
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"Please specify the correct file or use -f to force.\n");
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}
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return 0;
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}
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/* check if image fits to mtd device */
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fd = mtd_check_open(mtd);
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if(fd < 0) {
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fprintf(stderr, "Could not open mtd device: %s\n", mtd);
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exit(1);
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}
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if(mtdsize < trx->len) {
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fprintf(stderr, "Image too big for partition: %s\n", mtd);
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close(fd);
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return 0;
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}
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close(fd);
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return 1;
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}
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#endif /* target_brcm */
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static int
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image_check(int imagefd, const char *mtd)
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{
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int fd, systype;
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size_t count;
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char *c;
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FILE *f;
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#ifdef target_brcm
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return image_check_brcm(imagefd, mtd);
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return trx_check(imagefd, mtd, buf, &buflen);
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#endif
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}
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@ -303,10 +245,8 @@ mtd_refresh(const char *mtd)
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static int
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mtd_write(int imagefd, const char *mtd)
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{
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int fd, i, result;
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int fd, result;
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size_t r, w, e;
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struct erase_info_user mtdEraseInfo;
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int ret = 0;
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fd = mtd_check_open(mtd);
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if(fd < 0) {
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@ -336,7 +276,7 @@ mtd_write(int imagefd, const char *mtd)
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if (quiet < 2)
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fprintf(stderr, "\nAppending jffs2 data to from %s to %s...", jffs2file, mtd);
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/* got an EOF marker - this is the place to add some jffs2 data */
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mtd_replace_jffs2(fd, e, jffs2file);
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mtd_replace_jffs2(mtd, fd, e, jffs2file);
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goto done;
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}
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/* no EOF marker, make sure we figure out the last inode number
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@ -425,15 +365,15 @@ static void do_reboot(void)
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int main (int argc, char **argv)
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{
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int ch, i, boot, unlock, imagefd, force, unlocked;
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char *erase[MAX_ARGS], *device;
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int ch, i, boot, imagefd = 0, force, unlocked;
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char *erase[MAX_ARGS], *device = NULL;
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enum {
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CMD_ERASE,
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CMD_WRITE,
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CMD_UNLOCK,
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CMD_REFRESH,
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CMD_JFFS2WRITE
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} cmd;
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} cmd = -1;
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erase[0] = NULL;
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boot = 0;
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@ -1,18 +1,28 @@
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#ifndef __mtd_h
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#define __mtd_h
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#include <stdbool.h>
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#ifdef target_brcm47xx
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#define target_brcm 1
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#endif
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#define JFFS2_EOF "\xde\xad\xc0\xde"
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extern int quiet;
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extern int mtdsize;
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extern int erasesize;
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extern int mtd_open(const char *mtd);
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extern int mtd_open(const char *mtd, bool block);
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extern int mtd_check_open(const char *mtd);
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extern int mtd_erase_block(int fd, int offset);
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extern int mtd_write_buffer(int fd, const char *buf, int offset, int length);
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extern int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir);
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extern int mtd_replace_jffs2(int fd, int ofs, const char *filename);
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extern int mtd_replace_jffs2(const char *mtd, int fd, int ofs, const char *filename);
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extern void mtd_parse_jffs2data(const char *buf, const char *dir);
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/* target specific */
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extern int trx_fixup(int fd, const char *name);
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extern int trx_check(int imagefd, const char *mtd, char *buf, int *len);
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#endif /* __mtd_h */
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165
package/mtd/src/trx.c
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165
package/mtd/src/trx.c
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@ -0,0 +1,165 @@
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/*
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* trx.c
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*
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* Copyright (C) 2005 Mike Baker
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* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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 <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include "mtd-api.h"
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#include "mtd.h"
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#define TRX_MAGIC 0x30524448 /* "HDR0" */
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struct trx_header {
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unsigned magic; /* "HDR0" */
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unsigned len; /* Length of file including header */
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unsigned crc32; /* 32-bit CRC from flag_version to end of file */
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unsigned flag_version; /* 0:15 flags, 16:31 version */
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unsigned offsets[3]; /* Offsets of partitions from start of header */
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};
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static unsigned long *crc32 = NULL;
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static void init_crc32()
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{
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unsigned long crc;
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unsigned long poly = 0xEDB88320L;
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int n, bit;
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if (crc32)
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return;
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crc32 = (unsigned long *) malloc(256 * sizeof(unsigned long));
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if (!crc32) {
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perror("malloc");
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exit(1);
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}
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for (n = 0; n < 256; n++) {
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crc = (unsigned long) n;
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for (bit = 0; bit < 8; bit++)
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crc = (crc & 1) ? (poly ^ (crc >> 1)) : (crc >> 1);
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crc32[n] = crc;
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}
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}
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static unsigned int crc32buf(char *buf, size_t len)
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{
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unsigned int crc = 0xFFFFFFFF;
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for (; len; len--, buf++)
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crc = crc32[(crc ^ *buf) & 0xff] ^ (crc >> 8);
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return crc;
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}
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int
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trx_fixup(int fd, const char *name)
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{
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struct mtd_info_user mtdInfo;
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unsigned long len;
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struct trx_header *trx;
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void *ptr, *scan;
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int bfd;
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if (ioctl(fd, MEMGETINFO, &mtdInfo) < 0) {
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fprintf(stderr, "Failed to get mtd info\n");
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goto err;
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}
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len = mtdInfo.size;
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if (mtdInfo.size <= 0) {
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fprintf(stderr, "Invalid MTD device size\n");
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goto err;
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}
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bfd = mtd_open(name, true);
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ptr = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_SHARED, bfd, 0);
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if (!ptr || (ptr == (void *) -1)) {
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perror("mmap");
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goto err1;
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}
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trx = ptr;
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if (trx->magic != TRX_MAGIC) {
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fprintf(stderr, "TRX header not found\n");
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goto err;
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}
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init_crc32();
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scan = ptr + offsetof(struct trx_header, flag_version);
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trx->crc32 = crc32buf(scan, trx->len - (scan - ptr));
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msync(ptr, sizeof(struct trx_header), MS_SYNC|MS_INVALIDATE);
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munmap(ptr, len);
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close(bfd);
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return 0;
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err1:
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close(bfd);
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err:
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fprintf(stderr, "Error fixing up TRX header\n");
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return -1;
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}
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int
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trx_check(int imagefd, const char *mtd, char *buf, int *len)
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{
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const struct trx_header *trx = (const struct trx_header *) buf;
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int fd;
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if (strcmp(mtd, "linux") != 0)
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return 1;
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*len = read(imagefd, buf, 32);
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if (*len < 32) {
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fprintf(stdout, "Could not get image header, file too small (%d bytes)\n", *len);
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return 0;
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}
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if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
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if (quiet < 2) {
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fprintf(stderr, "Bad trx header\n");
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fprintf(stderr, "This is not the correct file format; refusing to flash.\n"
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"Please specify the correct file or use -f to force.\n");
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}
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return 0;
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}
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/* check if image fits to mtd device */
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fd = mtd_check_open(mtd);
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if(fd < 0) {
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fprintf(stderr, "Could not open mtd device: %s\n", mtd);
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exit(1);
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}
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if(mtdsize < trx->len) {
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fprintf(stderr, "Image too big for partition: %s\n", mtd);
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close(fd);
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return 0;
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}
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close(fd);
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return 1;
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}
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