mkimage: Automatically make space in FDT when full

When adding hashes or signatures, the target FDT may be full. Detect this
and automatically try again after making 1KB of space.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 17 insertions, 9 deletions

diff --git a/tools/image-host.c b/tools/image-host.c
index 651f1c2f8b..2be5e8043c 100644
--- a/tools/image-host.c
+++ b/tools/image-host.c
@@ -224,7 +224,9 @@ static int fit_image_process_sig(const char *keydir, void *keydest,
 	ret = fit_image_write_sig(fit, noffset, value, value_len, comment,
 			NULL, 0);
 	if (ret) {
-		printf("Can't write signature for '%s' signature node in '%s' image node: %s\n",
+		if (ret == -FDT_ERR_NOSPACE)
+			return -ENOSPC;
+		printf("Can't write signature for '%s' signature node in '%s' conf node: %s\n",
 		       node_name, image_name, fdt_strerror(ret));
 		return -1;
 	}
@@ -589,10 +591,13 @@ static int fit_config_process_sig(const char *keydir, void *keydest,
 		return -1;
 	}
 
-	if (fit_image_write_sig(fit, noffset, value, value_len, comment,
-				region_prop, region_proplen)) {
-		printf("Can't write signature for '%s' signature node in '%s' conf node\n",
-		       node_name, conf_name);
+	ret = fit_image_write_sig(fit, noffset, value, value_len, comment,
+				region_prop, region_proplen);
+	if (ret) {
+		if (ret == -FDT_ERR_NOSPACE)
+			return -ENOSPC;
+		printf("Can't write signature for '%s' signature node in '%s' conf node: %s\n",
+		       node_name, conf_name, fdt_strerror(ret));
 		return -1;
 	}
 	free(value);
@@ -602,10 +607,13 @@ static int fit_config_process_sig(const char *keydir, void *keydest,
 	info.keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
 
 	/* Write the public key into the supplied FDT file */
-	if (keydest && info.algo->add_verify_data(&info, keydest)) {
-		printf("Failed to add verification data for '%s' signature node in '%s' image node\n",
-		       node_name, conf_name);
-		return -1;
+	if (keydest) {
+		ret = info.algo->add_verify_data(&info, keydest);
+		if (ret) {
+			printf("Failed to add verification data for '%s' signature node in '%s' image node\n",
+			       node_name, conf_name);
+			return ret == FDT_ERR_NOSPACE ? -ENOSPC : -EIO;
+		}
 	}
 
 	return 0;