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Code

clean up mtd, fix up trx header when integrating jffs2 data on broadcom devices

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12655 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2008-09-23 09:23:58 +00:00
parent 5f8749031e
commit 82cd54f3ea
6 changed files with 209 additions and 80 deletions
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7
package/mtd/Makefile
View File

@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=mtd
PKG_RELEASE:=7
PKG_RELEASE:=8
PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)
@ -32,10 +32,13 @@ define Build/Prepare
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
target=$(firstword $(subst -, ,$(BOARD)))
define Build/Compile
$(MAKE) -C $(PKG_BUILD_DIR) \
$(TARGET_CONFIGURE_OPTS) \
CFLAGS="$(TARGET_CFLAGS) -Dtarget_$(firstword $(subst -, ,$(BOARD)))=1"
TARGET=$(target) \
CFLAGS="$(TARGET_CFLAGS) -Dtarget_$(target)=1 -Wall"
endef
define Package/mtd/install

6
package/mtd/src/Makefile
View File

@ -1,6 +1,10 @@
CC = gcc
CFLAGS += -Wall
mtd: mtd.o jffs2.o crc32.o
obj = mtd.o jffs2.o crc32.o
obj.brcm = trx.o
obj.brcm47xx = $(obj.brcm)
mtd: $(obj) $(obj.$(TARGET))
clean:
rm -f *.o jffs2

13
package/mtd/src/jffs2.c
View File

@ -140,7 +140,6 @@ static void add_file(const char *name, int parent)
struct stat st;
char wbuf[4096];
const char *fname;
FILE *f;
if (stat(name, &st)) {
fprintf(stderr, "File %s does not exist\n", name);
@ -210,7 +209,7 @@ static void add_file(const char *name, int parent)
close(fd);
}
int mtd_replace_jffs2(int fd, int ofs, const char *filename)
int mtd_replace_jffs2(const char *mtd, int fd, int ofs, const char *filename)
{
outfd = fd;
mtdofs = ofs;
@ -226,6 +225,11 @@ int mtd_replace_jffs2(int fd, int ofs, const char *filename)
add_data(JFFS2_EOF, sizeof(JFFS2_EOF) - 1);
pad(erasesize);
free(buf);
#ifdef target_brcm
trx_fixup(outfd, mtd);
#endif
return 0;
}
void mtd_parse_jffs2data(const char *buf, const char *dir)
@ -258,7 +262,6 @@ void mtd_parse_jffs2data(const char *buf, const char *dir)
int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir)
{
int err = -1, fdeof = 0;
off_t offset;
outfd = mtd_check_open(mtd);
if (!outfd)
@ -326,6 +329,10 @@ int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir)
err = 0;
#ifdef target_brcm
trx_fixup(outfd, mtd);
#endif
done:
close(outfd);
if (buf)

84
package/mtd/src/mtd.c
View File

@ -46,21 +46,9 @@
#include "mtd-api.h"
#include "mtd.h"
#ifdef target_brcm47xx
#define target_brcm 1
#endif
#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define MAX_ARGS 8
#define DEBUG
#define JFFS2_DEFAULT_DIR "" /* directory name without /, empty means root dir */
#define SYSTYPE_UNKNOWN 0
#define SYSTYPE_BROADCOM 1
/* to be continued */
struct trx_header {
uint32_t magic; /* "HDR0" */
uint32_t len; /* Length of file including header */
@ -77,7 +65,7 @@ int quiet;
int mtdsize = 0;
int erasesize = 0;
int mtd_open(const char *mtd)
int mtd_open(const char *mtd, bool block)
{
FILE *fp;
char dev[PATH_MAX];
@ -88,9 +76,9 @@ int mtd_open(const char *mtd)
if ((fp = fopen("/proc/mtd", "r"))) {
while (fgets(dev, sizeof(dev), fp)) {
if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
snprintf(dev, sizeof(dev), "/dev/mtd/%d", i);
snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
if ((ret=open(dev, flags))<0) {
snprintf(dev, sizeof(dev), "/dev/mtd%d", i);
snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
ret=open(dev, flags);
}
fclose(fp);
@ -108,7 +96,7 @@ int mtd_check_open(const char *mtd)
struct mtd_info_user mtdInfo;
int fd;
fd = mtd_open(mtd);
fd = mtd_open(mtd, false);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
return 0;
@ -136,68 +124,22 @@ int mtd_erase_block(int fd, int offset)
fprintf(stderr, "Erasing mtd failed.\n");
exit(1);
}
return 0;
}
int mtd_write_buffer(int fd, const char *buf, int offset, int length)
{
lseek(fd, offset, SEEK_SET);
write(fd, buf, length);
return 0;
}
#ifdef target_brcm
static int
image_check_brcm(int imagefd, const char *mtd)
{
struct trx_header *trx = (struct trx_header *) buf;
int fd;
if (strcmp(mtd, "linux") != 0)
return 1;
buflen = read(imagefd, buf, 32);
if (buflen < 32) {
fprintf(stdout, "Could not get image header, file too small (%ld bytes)\n", buflen);
return 0;
}
if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
if (quiet < 2) {
fprintf(stderr, "Bad trx header\n");
fprintf(stderr, "This is not the correct file format; refusing to flash.\n"
"Please specify the correct file or use -f to force.\n");
}
return 0;
}
/* check if image fits to mtd device */
fd = mtd_check_open(mtd);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
if(mtdsize < trx->len) {
fprintf(stderr, "Image too big for partition: %s\n", mtd);
close(fd);
return 0;
}
close(fd);
return 1;
}
#endif /* target_brcm */
static int
image_check(int imagefd, const char *mtd)
{
int fd, systype;
size_t count;
char *c;
FILE *f;
#ifdef target_brcm
return image_check_brcm(imagefd, mtd);
return trx_check(imagefd, mtd, buf, &buflen);
#endif
}
@ -303,10 +245,8 @@ mtd_refresh(const char *mtd)
static int
mtd_write(int imagefd, const char *mtd)
{
int fd, i, result;
int fd, result;
size_t r, w, e;
struct erase_info_user mtdEraseInfo;
int ret = 0;
fd = mtd_check_open(mtd);
if(fd < 0) {
@ -336,7 +276,7 @@ mtd_write(int imagefd, const char *mtd)
if (quiet < 2)
fprintf(stderr, "\nAppending jffs2 data to from %s to %s...", jffs2file, mtd);
/* got an EOF marker - this is the place to add some jffs2 data */
mtd_replace_jffs2(fd, e, jffs2file);
mtd_replace_jffs2(mtd, fd, e, jffs2file);
goto done;
}
/* no EOF marker, make sure we figure out the last inode number
@ -425,15 +365,15 @@ static void do_reboot(void)
int main (int argc, char **argv)
{
int ch, i, boot, unlock, imagefd, force, unlocked;
char *erase[MAX_ARGS], *device;
int ch, i, boot, imagefd = 0, force, unlocked;
char *erase[MAX_ARGS], *device = NULL;
enum {
CMD_ERASE,
CMD_WRITE,
CMD_UNLOCK,
CMD_REFRESH,
CMD_JFFS2WRITE
} cmd;
} cmd = -1;
erase[0] = NULL;
boot = 0;

14
package/mtd/src/mtd.h
View File

@ -1,18 +1,28 @@
#ifndef __mtd_h
#define __mtd_h
#include <stdbool.h>
#ifdef target_brcm47xx
#define target_brcm 1
#endif
#define JFFS2_EOF "\xde\xad\xc0\xde"
extern int quiet;
extern int mtdsize;
extern int erasesize;
extern int mtd_open(const char *mtd);
extern int mtd_open(const char *mtd, bool block);
extern int mtd_check_open(const char *mtd);
extern int mtd_erase_block(int fd, int offset);
extern int mtd_write_buffer(int fd, const char *buf, int offset, int length);
extern int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir);
extern int mtd_replace_jffs2(int fd, int ofs, const char *filename);
extern int mtd_replace_jffs2(const char *mtd, int fd, int ofs, const char *filename);
extern void mtd_parse_jffs2data(const char *buf, const char *dir);
/* target specific */
extern int trx_fixup(int fd, const char *name);
extern int trx_check(int imagefd, const char *mtd, char *buf, int *len);
#endif /* __mtd_h */

165
package/mtd/src/trx.c Normal file
View File

@ -0,0 +1,165 @@
/*
* trx.c
*
* Copyright (C) 2005 Mike Baker
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* 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 <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <string.h>
#include <sys/ioctl.h>
#include "mtd-api.h"
#include "mtd.h"
#define TRX_MAGIC 0x30524448 /* "HDR0" */
struct trx_header {
unsigned magic; /* "HDR0" */
unsigned len; /* Length of file including header */
unsigned crc32; /* 32-bit CRC from flag_version to end of file */
unsigned flag_version; /* 0:15 flags, 16:31 version */
unsigned offsets[3]; /* Offsets of partitions from start of header */
};
static unsigned long *crc32 = NULL;
static void init_crc32()
{
unsigned long crc;
unsigned long poly = 0xEDB88320L;
int n, bit;
if (crc32)
return;
crc32 = (unsigned long *) malloc(256 * sizeof(unsigned long));
if (!crc32) {
perror("malloc");
exit(1);
}
for (n = 0; n < 256; n++) {
crc = (unsigned long) n;
for (bit = 0; bit < 8; bit++)
crc = (crc & 1) ? (poly ^ (crc >> 1)) : (crc >> 1);
crc32[n] = crc;
}
}
static unsigned int crc32buf(char *buf, size_t len)
{
unsigned int crc = 0xFFFFFFFF;
for (; len; len--, buf++)
crc = crc32[(crc ^ *buf) & 0xff] ^ (crc >> 8);
return crc;
}
int
trx_fixup(int fd, const char *name)
{
struct mtd_info_user mtdInfo;
unsigned long len;
struct trx_header *trx;
void *ptr, *scan;
int bfd;
if (ioctl(fd, MEMGETINFO, &mtdInfo) < 0) {
fprintf(stderr, "Failed to get mtd info\n");
goto err;
}
len = mtdInfo.size;
if (mtdInfo.size <= 0) {
fprintf(stderr, "Invalid MTD device size\n");
goto err;
}
bfd = mtd_open(name, true);
ptr = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_SHARED, bfd, 0);
if (!ptr || (ptr == (void *) -1)) {
perror("mmap");
goto err1;
}
trx = ptr;
if (trx->magic != TRX_MAGIC) {
fprintf(stderr, "TRX header not found\n");
goto err;
}
init_crc32();
scan = ptr + offsetof(struct trx_header, flag_version);
trx->crc32 = crc32buf(scan, trx->len - (scan - ptr));
msync(ptr, sizeof(struct trx_header), MS_SYNC|MS_INVALIDATE);
munmap(ptr, len);
close(bfd);
return 0;
err1:
close(bfd);
err:
fprintf(stderr, "Error fixing up TRX header\n");
return -1;
}
int
trx_check(int imagefd, const char *mtd, char *buf, int *len)
{
const struct trx_header *trx = (const struct trx_header *) buf;
int fd;
if (strcmp(mtd, "linux") != 0)
return 1;
*len = read(imagefd, buf, 32);
if (*len < 32) {
fprintf(stdout, "Could not get image header, file too small (%d bytes)\n", *len);
return 0;
}
if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
if (quiet < 2) {
fprintf(stderr, "Bad trx header\n");
fprintf(stderr, "This is not the correct file format; refusing to flash.\n"
"Please specify the correct file or use -f to force.\n");
}
return 0;
}
/* check if image fits to mtd device */
fd = mtd_check_open(mtd);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
if(mtdsize < trx->len) {
fprintf(stderr, "Image too big for partition: %s\n", mtd);
close(fd);
return 0;
}
close(fd);
return 1;
}