#include <libgen.h>
#include <getopt.h> /* for getopt() */
#include <stdarg.h>
+#include <stdbool.h>
+#include <endian.h>
#include <errno.h>
#include <sys/stat.h>
#include "md5.h"
#define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
+#define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]))
#define HEADER_VERSION_V1 0x01000000
#define HEADER_VERSION_V2 0x02000000
char fw_version[36];
uint32_t hw_id; /* hardware id */
uint32_t hw_rev; /* hardware revision */
- uint32_t unk1;
+ uint32_t region_code; /* region code */
uint8_t md5sum1[MD5SUM_LEN];
uint32_t unk2;
uint8_t md5sum2[MD5SUM_LEN];
uint16_t ver_hi;
uint16_t ver_mid;
uint16_t ver_lo;
- uint8_t pad[354];
+ uint8_t pad[130];
+ char region_str1[32];
+ char region_str2[32];
+ uint8_t pad2[160];
} __attribute__ ((packed));
struct flash_layout {
uint32_t rootfs_ofs;
};
+struct fw_region {
+ char name[4];
+ uint32_t code;
+};
+
+
/*
* Globals
*/
static char *opt_hw_rev;
static uint32_t hw_rev;
static uint32_t opt_hdr_ver = 1;
+static char *country;
+static const struct fw_region *region;
static int fw_ver_lo;
static int fw_ver_mid;
static int fw_ver_hi;
static struct file_info boot_info;
static int combined;
static int strip_padding;
-static int ignore_size;
static int add_jffs2_eof;
static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
static uint32_t fw_max_len;
static struct file_info inspect_info;
static int extract = 0;
+static bool endian_swap = false;
static const char md5salt_normal[MD5SUM_LEN] = {
0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
}
};
+static const struct fw_region regions[] = {
+ /* Default region (universal) uses code 0 as well */
+ {"US", 1},
+ {"EU", 0},
+};
+
/*
* Message macros
*/
return ret;
}
+static const struct fw_region * find_region(const char *country) {
+ size_t i;
+
+ for (i = 0; i < ARRAY_SIZE(regions); i++) {
+ if (strcasecmp(regions[i].name, country) == 0)
+ return ®ions[i];
+ }
+
+ return NULL;
+}
+
static void usage(int status)
{
fprintf(stderr, "Usage: %s [OPTIONS...]\n", progname);
"\n"
"Options:\n"
" -c use combined kernel image\n"
+" -e swap endianness in kernel load address and entry point\n"
" -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
" -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
" -H <hwid> use hardware id specified with <hwid>\n"
" -W <hwrev> use hardware revision specified with <hwrev>\n"
+" -C <country> set region code to <country>\n"
" -F <id> use flash layout specified with <id>\n"
" -k <file> read kernel image from the file <file>\n"
" -r <file> read rootfs image from the file <file>\n"
" -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
" -o <file> write output to the file <file>\n"
" -s strip padding from the end of the image\n"
-" -S ignore firmware size limit (only for combined images)\n"
" -j add jffs2 end-of-filesystem markers\n"
" -N <vendor> set image vendor to <vendor>\n"
" -V <version> set image version to <version>\n"
}
hw_id = strtoul(opt_hw_id, NULL, 0);
- if (layout_id == NULL) {
+ if (!combined && layout_id == NULL) {
ERR("flash layout is not specified");
return -1;
}
else
hw_rev = 1;
- layout = find_layout(layout_id);
- if (layout == NULL) {
- ERR("unknown flash layout \"%s\"", layout_id);
- return -1;
+ if (country) {
+ region = find_region(country);
+ if (!region) {
+ ERR("unknown region code \"%s\"", country);
+ return -1;
+ }
}
- if (!kernel_la)
- kernel_la = layout->kernel_la;
- if (!kernel_ep)
- kernel_ep = layout->kernel_ep;
- if (!rootfs_ofs)
- rootfs_ofs = layout->rootfs_ofs;
+ if (combined) {
+ if (!kernel_la || !kernel_ep) {
+ ERR("kernel loading address and entry point must be specified for combined image");
+ return -1;
+ }
+ } else {
+ layout = find_layout(layout_id);
+ if (layout == NULL) {
+ ERR("unknown flash layout \"%s\"", layout_id);
+ return -1;
+ }
- if (reserved_space > layout->fw_max_len) {
- ERR("reserved space is not valid");
- return -1;
- }
+ if (!kernel_la)
+ kernel_la = layout->kernel_la;
+ if (!kernel_ep)
+ kernel_ep = layout->kernel_ep;
+ if (!rootfs_ofs)
+ rootfs_ofs = layout->rootfs_ofs;
- fw_max_len = layout->fw_max_len - reserved_space;
+ if (reserved_space > layout->fw_max_len) {
+ ERR("reserved space is not valid");
+ return -1;
+ }
+ }
if (kernel_info.file_name == NULL) {
ERR("no kernel image specified");
kernel_len = kernel_info.file_size;
- if (combined) {
- exceed_bytes = kernel_info.file_size - (fw_max_len - sizeof(struct fw_header));
- if (exceed_bytes > 0) {
- if (!ignore_size) {
- ERR("kernel image is too big by %i bytes", exceed_bytes);
- return -1;
- }
- layout->fw_max_len = sizeof(struct fw_header) +
- kernel_info.file_size +
- reserved_space;
- }
- } else {
+ if (!combined) {
+ fw_max_len = layout->fw_max_len - reserved_space;
+
if (rootfs_info.file_name == NULL) {
ERR("no rootfs image specified");
return -1;
hdr->hw_id = htonl(hw_id);
hdr->hw_rev = htonl(hw_rev);
- if (boot_info.file_size == 0)
- memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
- else
- memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
-
hdr->kernel_la = htonl(kernel_la);
hdr->kernel_ep = htonl(kernel_ep);
- hdr->fw_length = htonl(layout->fw_max_len);
hdr->kernel_ofs = htonl(sizeof(struct fw_header));
hdr->kernel_len = htonl(kernel_len);
+
if (!combined) {
+ if (boot_info.file_size == 0)
+ memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
+ else
+ memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
+
+ hdr->fw_length = htonl(layout->fw_max_len);
hdr->rootfs_ofs = htonl(rootfs_ofs);
hdr->rootfs_len = htonl(rootfs_info.file_size);
}
hdr->ver_mid = htons(fw_ver_mid);
hdr->ver_lo = htons(fw_ver_lo);
- get_md5(buf, len, hdr->md5sum1);
+ if (region) {
+ hdr->region_code = htonl(region->code);
+ snprintf(
+ hdr->region_str1, sizeof(hdr->region_str1), "00000000;%02X%02X%02X%02X;",
+ region->name[0], region->name[1], region->name[2], region->name[3]
+ );
+ snprintf(
+ hdr->region_str2, sizeof(hdr->region_str2), "%02X%02X%02X%02X",
+ region->name[0], region->name[1], region->name[2], region->name[3]
+ );
+ }
+
+ if (endian_swap) {
+ hdr->kernel_la = bswap_32(hdr->kernel_la);
+ hdr->kernel_ep = bswap_32(hdr->kernel_ep);
+ }
+
+ if (!combined)
+ get_md5(buf, len, hdr->md5sum1);
}
static int pad_jffs2(char *buf, int currlen)
int ret = EXIT_FAILURE;
int writelen = 0;
- buflen = layout->fw_max_len;
+ writelen = sizeof(struct fw_header) + kernel_len;
+
+ if (combined)
+ buflen = writelen;
+ else
+ buflen = layout->fw_max_len;
buf = malloc(buflen);
if (!buf) {
if (ret)
goto out_free_buf;
- writelen = sizeof(struct fw_header) + kernel_len;
if (!combined) {
if (rootfs_align)
printf("%-23s: 0x%08x\n", label, val);
}
-static inline void inspect_fw_phexpost(const char *label, uint32_t val, const char *post)
-{
- printf("%-23s: 0x%08x (%s)\n", label, val, post);
-}
-
static inline void inspect_fw_phexdec(const char *label, uint32_t val)
{
printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
- if (ntohl(hdr->unk1) != 0)
- inspect_fw_phexdec("Unknown value 1", hdr->unk1);
-
memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
if (ntohl(hdr->boot_len) == 0)
memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
inspect_fw_pstr("Firmware version", hdr->fw_version);
inspect_fw_phex("Hardware ID", ntohl(hdr->hw_id));
inspect_fw_phex("Hardware Revision", ntohl(hdr->hw_rev));
+ inspect_fw_phex("Region code", ntohl(hdr->region_code));
printf("\n");
while ( 1 ) {
int c;
- c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:ci:k:r:R:o:xX:hsSjv:");
+ c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:C:ci:k:r:R:o:xX:ehsjv:");
if (c == -1)
break;
case 'W':
opt_hw_rev = optarg;
break;
+ case 'C':
+ country = optarg;
+ break;
case 'L':
sscanf(optarg, "0x%x", &kernel_la);
break;
case 's':
strip_padding = 1;
break;
- case 'S':
- ignore_size = 1;
- break;
case 'i':
inspect_info.file_name = optarg;
break;
case 'x':
extract = 1;
break;
+ case 'e':
+ endian_swap = true;
+ break;
case 'h':
usage(EXIT_SUCCESS);
break;
projects / openwrt / openwrt.git / blobdiff