tools, fit_check_sign: verify a signed fit image
add host tool "fit_check_sign" which verifies, if a fit image is
signed correct.
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Simon Glass <sjg@chromium.org>
diff --git a/tools/fit_check_sign.c b/tools/fit_check_sign.c
new file mode 100644
index 0000000..d6d9340
--- /dev/null
+++ b/tools/fit_check_sign.c
@@ -0,0 +1,85 @@
+/*
+ * (C) Copyright 2014
+ * DENX Software Engineering
+ * Heiko Schocher <hs@denx.de>
+ *
+ * Based on:
+ * (C) Copyright 2008 Semihalf
+ *
+ * (C) Copyright 2000-2004
+ * DENX Software Engineering
+ * Wolfgang Denk, wd@denx.de
+ *
+ * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
+ * FIT image specific code abstracted from mkimage.c
+ * some functions added to address abstraction
+ *
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include "mkimage.h"
+#include "fit_common.h"
+#include <image.h>
+#include <u-boot/crc.h>
+
+void usage(char *cmdname)
+{
+ fprintf(stderr, "Usage: %s -f fit file -k key file\n"
+ " -f ==> set fit file which should be checked'\n"
+ " -k ==> set key file which contains the key'\n",
+ cmdname);
+ exit(EXIT_FAILURE);
+}
+
+int main(int argc, char **argv)
+{
+ int ffd = -1;
+ int kfd = -1;
+ struct stat fsbuf;
+ struct stat ksbuf;
+ void *fit_blob;
+ char *fdtfile = NULL;
+ char *keyfile = NULL;
+ char cmdname[50];
+ int ret;
+ void *key_blob;
+ int c;
+
+ strcpy(cmdname, *argv);
+ while ((c = getopt(argc, argv, "f:k:")) != -1)
+ switch (c) {
+ case 'f':
+ fdtfile = optarg;
+ break;
+ case 'k':
+ keyfile = optarg;
+ break;
+ default:
+ usage(cmdname);
+ break;
+ }
+
+ ffd = mmap_fdt(cmdname, fdtfile, &fit_blob, &fsbuf, 0);
+ if (ffd < 0)
+ return EXIT_FAILURE;
+ kfd = mmap_fdt(cmdname, keyfile, &key_blob, &ksbuf, 0);
+ if (ffd < 0)
+ return EXIT_FAILURE;
+
+ image_set_host_blob(key_blob);
+ ret = fit_check_sign(fit_blob, key_blob);
+
+ if (ret)
+ ret = EXIT_SUCCESS;
+ else
+ ret = EXIT_FAILURE;
+
+ (void) munmap((void *)fit_blob, fsbuf.st_size);
+ (void) munmap((void *)key_blob, ksbuf.st_size);
+
+ close(ffd);
+ close(kfd);
+ exit(ret);
+}