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This patch makes it possible to set a custom image magic.
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -26,6 +26,7 @@ static struct image_tool_params params =
.arch = IH_ARCH_PPC,
.type = IH_TYPE_KERNEL,
.comp = IH_COMP_GZIP,
+ .magic = IH_MAGIC,
.dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
.imagename = "",
.imagename2 = "",
@@ -89,11 +90,12 @@ static void usage(const char *msg)
" -q ==> quiet\n",
params.cmdname);
fprintf(stderr,
- " %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
+ " %s [-x] -A arch -O os -T type -C comp -M magic -a addr -e ep -n name -d data_file[:data_file...] image\n"
" -A ==> set architecture to 'arch'\n"
" -O ==> set operating system to 'os'\n"
" -T ==> set image type to 'type'\n"
" -C ==> set compression type 'comp'\n"
+ " -M ==> set image magic to 'magic'\n"
" -a ==> set load address to 'addr' (hex)\n"
" -e ==> set entry point to 'ep' (hex)\n"
" -n ==> set image name to 'name'\n"
@@ -160,7 +162,7 @@ static int add_content(int type, const c
}
static const char optstring[] =
- "a:A:b:B:c:C:d:D:e:Ef:Fg:G:i:k:K:ln:N:o:O:p:qrR:stT:vVx";
+ "a:A:b:B:c:C:d:D:e:Ef:Fg:G:i:k:K:lM:n:N:o:O:p:qrR:stT:vVx";
static const struct option longopts[] = {
{ "load-address", required_argument, NULL, 'a' },
@@ -303,6 +305,14 @@ static void process_args(int argc, char
case 'l':
params.lflag = 1;
break;
+ case 'M':
+ params.magic = strtoull(optarg, &ptr, 16);
+ if (*ptr) {
+ fprintf(stderr, "%s: invalid magic %s\n",
+ params.cmdname, optarg);
+ exit(EXIT_FAILURE);
+ }
+ break;
case 'n':
params.imagename = optarg;
break;
--- a/tools/default_image.c
+++ b/tools/default_image.c
@@ -67,7 +67,7 @@ static int image_verify_header(unsigned
*/
memcpy(hdr, ptr, sizeof(struct legacy_img_hdr));
- if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
+ if (be32_to_cpu(hdr->ih_magic) != params->magic) {
debug("%s: Bad Magic Number: \"%s\" is no valid image\n",
params->cmdname, params->imagefile);
return -FDT_ERR_BADMAGIC;
@@ -146,7 +146,7 @@ static void image_set_header(void *ptr,
}
/* Build new header */
- image_set_magic(hdr, IH_MAGIC);
+ image_set_magic(hdr, params->magic);
image_set_time(hdr, time);
image_set_size(hdr, imagesize);
image_set_load(hdr, addr);
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -67,6 +67,7 @@ struct image_tool_params {
int arch;
int type;
int comp;
+ unsigned int magic;
char *dtc;
unsigned int addr;
unsigned int ep;
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