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-rw-r--r--tools/fit_image.c18
-rw-r--r--tools/mkimage.c9
2 files changed, 18 insertions, 9 deletions
diff --git a/tools/fit_image.c b/tools/fit_image.c
index b17fa2d..645e93c 100644
--- a/tools/fit_image.c
+++ b/tools/fit_image.c
@@ -124,10 +124,16 @@ static int fit_handle_file (struct mkimage_params *params)
}
sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
- /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
- sprintf (cmd, "%s %s %s > %s",
- MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
- debug ("Trying to execute \"%s\"\n", cmd);
+ /* We either compile the source file, or use the existing FIT image */
+ if (params->datafile) {
+ /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
+ snprintf(cmd, sizeof(cmd), "%s %s %s > %s",
+ MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
+ debug("Trying to execute \"%s\"\n", cmd);
+ } else {
+ snprintf(cmd, sizeof(cmd), "cp %s %s",
+ params->imagefile, tmpfile);
+ }
if (system (cmd) == -1) {
fprintf (stderr, "%s: system(%s) failed: %s\n",
params->cmdname, cmd, strerror(errno));
@@ -153,8 +159,8 @@ static int fit_handle_file (struct mkimage_params *params)
goto err_add_hashes;
}
- /* add a timestamp at offset 0 i.e., root */
- if (fit_set_timestamp (ptr, 0, sbuf.st_mtime)) {
+ /* for first image creation, add a timestamp at offset 0 i.e., root */
+ if (params->datafile && fit_set_timestamp(ptr, 0, sbuf.st_mtime)) {
fprintf (stderr, "%s: Can't add image timestamp\n",
params->cmdname);
goto err_add_timestamp;
diff --git a/tools/mkimage.c b/tools/mkimage.c
index 3760392..e2b82d0 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -240,12 +240,14 @@ main (int argc, char **argv)
case 'f':
if (--argc <= 0)
usage ();
+ params.datafile = *++argv;
+ /* no break */
+ case 'F':
/*
* The flattened image tree (FIT) format
* requires a flattened device tree image type
*/
params.type = IH_TYPE_FLATDT;
- params.datafile = *++argv;
params.fflag = 1;
goto NXTARG;
case 'k':
@@ -633,14 +635,15 @@ usage ()
" -d ==> use image data from 'datafile'\n"
" -x ==> set XIP (execute in place)\n",
params.cmdname);
- fprintf(stderr, " %s [-D dtc_options] -f fit-image.its fit-image\n",
+ fprintf(stderr, " %s [-D dtc_options] [-f fit-image.its|-F] fit-image\n",
params.cmdname);
fprintf(stderr, " -D => set options for device tree compiler\n"
" -f => input filename for FIT source\n");
#ifdef CONFIG_FIT_SIGNATURE
fprintf(stderr, "Signing / verified boot options: [-k keydir] [-K dtb]\n"
" -k => set directory containing private keys\n"
- " -K => write public keys to this .dtb file\n");
+ " -K => write public keys to this .dtb file\n"
+ " -F => re-sign existing FIT image\n");
#else
fprintf(stderr, "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
#endif