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-rw-r--r--tools/firmware-utils/src/bcm4908img.c58
1 files changed, 33 insertions, 25 deletions
diff --git a/tools/firmware-utils/src/bcm4908img.c b/tools/firmware-utils/src/bcm4908img.c
index 9e81ca1b11..9cb16a12ee 100644
--- a/tools/firmware-utils/src/bcm4908img.c
+++ b/tools/firmware-utils/src/bcm4908img.c
@@ -20,9 +20,13 @@
#if __BYTE_ORDER == __BIG_ENDIAN
#define cpu_to_le32(x) bswap_32(x)
#define le32_to_cpu(x) bswap_32(x)
+#define cpu_to_be32(x) (x)
+#define be32_to_cpu(x) (x)
#elif __BYTE_ORDER == __LITTLE_ENDIAN
#define cpu_to_le32(x) (x)
#define le32_to_cpu(x) (x)
+#define cpu_to_be32(x) bswap_32(x)
+#define be32_to_cpu(x) bswap_32(x)
#else
#error "Unsupported endianness"
#endif
@@ -52,13 +56,12 @@ struct bcm4908img_tail {
/* Info about BCM4908 image */
struct bcm4908img_info {
size_t file_size;
+ size_t vendor_header_size; /* Vendor header size */
uint32_t crc32; /* Calculated checksum */
struct bcm4908img_tail tail;
};
char *pathname;
-static size_t prefix_len;
-static size_t suffix_len;
static inline size_t bcm4908img_min(size_t x, size_t y) {
return x < y ? x : y;
@@ -149,8 +152,22 @@ uint32_t bcm4908img_crc32(uint32_t crc, uint8_t *buf, size_t len) {
* Existing firmware parser
**************************************************/
+struct chk_header {
+ uint32_t magic;
+ uint32_t header_len;
+ uint8_t reserved[8];
+ uint32_t kernel_chksum;
+ uint32_t rootfs_chksum;
+ uint32_t kernel_len;
+ uint32_t rootfs_len;
+ uint32_t image_chksum;
+ uint32_t header_chksum;
+ char board_id[0];
+};
+
static int bcm4908img_parse(FILE *fp, struct bcm4908img_info *info) {
struct bcm4908img_tail *tail = &info->tail;
+ struct chk_header *chk;
struct stat st;
uint8_t buf[1024];
size_t length;
@@ -168,12 +185,23 @@ static int bcm4908img_parse(FILE *fp, struct bcm4908img_info *info) {
}
info->file_size = st.st_size;
+ /* Vendor formats */
+
+ rewind(fp);
+ if (fread(buf, 1, sizeof(buf), fp) != sizeof(buf)) {
+ fprintf(stderr, "Failed to read file header\n");
+ return -EIO;
+ }
+ chk = (void *)buf;
+ if (be32_to_cpu(chk->magic) == 0x2a23245e)
+ info->vendor_header_size = be32_to_cpu(chk->header_len);
+
/* CRC32 */
- fseek(fp, prefix_len, SEEK_SET);
+ fseek(fp, info->vendor_header_size, SEEK_SET);
info->crc32 = 0xffffffff;
- length = info->file_size - prefix_len - sizeof(*tail) - suffix_len;
+ length = info->file_size - info->vendor_header_size - sizeof(*tail);
while (length && (bytes = fread(buf, 1, bcm4908img_min(sizeof(buf), length), fp)) > 0) {
info->crc32 = bcm4908img_crc32(info->crc32, buf, bytes);
length -= bytes;
@@ -204,21 +232,6 @@ static int bcm4908img_parse(FILE *fp, struct bcm4908img_info *info) {
* Check
**************************************************/
-static void bcm4908img_check_parse_options(int argc, char **argv) {
- int c;
-
- while ((c = getopt(argc, argv, "p:s:")) != -1) {
- switch (c) {
- case 'p':
- prefix_len = atoi(optarg);
- break;
- case 's':
- suffix_len = atoi(optarg);
- break;
- }
- }
-}
-
static int bcm4908img_check(int argc, char **argv) {
struct bcm4908img_info info;
FILE *fp;
@@ -231,9 +244,6 @@ static int bcm4908img_check(int argc, char **argv) {
}
pathname = argv[2];
- optind = 3;
- bcm4908img_check_parse_options(argc, argv);
-
fp = fopen(pathname, "r");
if (!fp) {
fprintf(stderr, "Failed to open %s\n", pathname);
@@ -399,9 +409,7 @@ static void usage() {
printf("Usage:\n");
printf("\n");
printf("Checking a BCM4908 image:\n");
- printf("\tbcm4908img check <file> [options]\tcheck if images is valid\n");
- printf("\t-p prefix\t\t\tlength of custom header to skip (default: 0)\n");
- printf("\t-s suffix\t\t\tlength of custom tail to skip (default: 0)\n");
+ printf("\tbcm4908img check <file>\t\t\tcheck if images is valid\n");
printf("\n");
printf("Creating a new BCM4908 image:\n");
printf("\tbcm4908img create <file> [options]\n");