1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2014
4 * DENX Software Engineering
5 * Heiko Schocher <hs@denx.de>
6 *
7 * Based on:
8 * (C) Copyright 2008 Semihalf
9 *
10 * (C) Copyright 2000-2004
11 * DENX Software Engineering
12 * Wolfgang Denk, wd@denx.de
13 *
14 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
15 * FIT image specific code abstracted from mkimage.c
16 * some functions added to address abstraction
17 *
18 * All rights reserved.
19 */
20
21 #include "mkimage.h"
22 #include "fit_common.h"
23 #include <image.h>
24 #include <u-boot/crc.h>
25
usage(char * cmdname)26 void usage(char *cmdname)
27 {
28 fprintf(stderr, "Usage: %s -f fit file -k key file\n"
29 " -f ==> set fit file which should be checked'\n"
30 " -k ==> set key file which contains the key'\n",
31 cmdname);
32 exit(EXIT_FAILURE);
33 }
34
main(int argc,char ** argv)35 int main(int argc, char **argv)
36 {
37 int ffd = -1;
38 int kfd = -1;
39 struct stat fsbuf;
40 struct stat ksbuf;
41 void *fit_blob;
42 char *fdtfile = NULL;
43 char *keyfile = NULL;
44 char cmdname[256];
45 int ret;
46 void *key_blob;
47 int c;
48
49 strncpy(cmdname, *argv, sizeof(cmdname) - 1);
50 cmdname[sizeof(cmdname) - 1] = '\0';
51 while ((c = getopt(argc, argv, "f:k:")) != -1)
52 switch (c) {
53 case 'f':
54 fdtfile = optarg;
55 break;
56 case 'k':
57 keyfile = optarg;
58 break;
59 default:
60 usage(cmdname);
61 break;
62 }
63
64 if (!fdtfile) {
65 fprintf(stderr, "%s: Missing fdt file\n", *argv);
66 usage(*argv);
67 }
68 if (!keyfile) {
69 fprintf(stderr, "%s: Missing key file\n", *argv);
70 usage(*argv);
71 }
72
73 ffd = mmap_fdt(cmdname, fdtfile, 0, &fit_blob, &fsbuf, false);
74 if (ffd < 0)
75 return EXIT_FAILURE;
76 kfd = mmap_fdt(cmdname, keyfile, 0, &key_blob, &ksbuf, false);
77 if (kfd < 0)
78 return EXIT_FAILURE;
79
80 image_set_host_blob(key_blob);
81 ret = fit_check_sign(fit_blob, key_blob);
82 if (!ret) {
83 ret = EXIT_SUCCESS;
84 fprintf(stderr, "Signature check OK\n");
85 } else {
86 ret = EXIT_FAILURE;
87 fprintf(stderr, "Signature check Bad (error %d)\n", ret);
88 }
89
90 (void) munmap((void *)fit_blob, fsbuf.st_size);
91 (void) munmap((void *)key_blob, ksbuf.st_size);
92
93 close(ffd);
94 close(kfd);
95 exit(ret);
96 }
97