1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2014
4 * DENX Software Engineering
5 * Heiko Schocher <hs@denx.de>
6 *
7 * fit_info: print the offset and the len of a property from
8 *	     node in a fit file.
9 *
10 * Based on:
11 * (C) Copyright 2008 Semihalf
12 *
13 * (C) Copyright 2000-2004
14 * DENX Software Engineering
15 * Wolfgang Denk, wd@denx.de
16 *
17 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
18 *		FIT image specific code abstracted from mkimage.c
19 *		some functions added to address abstraction
20 *
21 * All rights reserved.
22 */
23
24#include "mkimage.h"
25#include "fit_common.h"
26#include <image.h>
27#include <u-boot/crc.h>
28
29void usage(char *cmdname)
30{
31	fprintf(stderr, "Usage: %s -f fit file -n node -p property\n"
32			 "          -f ==> set fit file which is used'\n"
33			 "          -n ==> set node name'\n"
34			 "          -p ==> set property name'\n",
35		cmdname);
36	exit(EXIT_FAILURE);
37}
38
39int main(int argc, char **argv)
40{
41	int ffd = -1;
42	struct stat fsbuf;
43	void *fit_blob;
44	int len;
45	int  nodeoffset;	/* node offset from libfdt */
46	const void *nodep;	/* property node pointer */
47	char *fdtfile = NULL;
48	char *nodename = NULL;
49	char *propertyname = NULL;
50	char cmdname[256];
51	int c;
52
53	strncpy(cmdname, *argv, sizeof(cmdname) - 1);
54	cmdname[sizeof(cmdname) - 1] = '\0';
55	while ((c = getopt(argc, argv, "f:n:p:")) != -1)
56		switch (c) {
57		case 'f':
58			fdtfile = optarg;
59			break;
60		case 'n':
61			nodename = optarg;
62			break;
63		case 'p':
64			propertyname = optarg;
65			break;
66		default:
67			usage(cmdname);
68			break;
69		}
70
71	if (!fdtfile) {
72		fprintf(stderr, "%s: Missing fdt file\n", *argv);
73		usage(*argv);
74	}
75	if (!nodename) {
76		fprintf(stderr, "%s: Missing node name\n", *argv);
77		usage(*argv);
78	}
79	if (!propertyname) {
80		fprintf(stderr, "%s: Missing property name\n", *argv);
81		usage(*argv);
82	}
83	ffd = mmap_fdt(cmdname, fdtfile, 0, &fit_blob, &fsbuf, false, false);
84
85	if (ffd < 0) {
86		printf("Could not open %s\n", fdtfile);
87		exit(EXIT_FAILURE);
88	}
89
90	nodeoffset = fdt_path_offset(fit_blob, nodename);
91	if (nodeoffset < 0) {
92		printf("%s not found.", nodename);
93		exit(EXIT_FAILURE);
94	}
95	nodep = fdt_getprop(fit_blob, nodeoffset, propertyname, &len);
96	if (len == 0) {
97		printf("len == 0 %s\n", propertyname);
98		exit(EXIT_FAILURE);
99	}
100
101	printf("NAME: %s\n", fit_get_name(fit_blob, nodeoffset, NULL));
102	printf("LEN: %d\n", len);
103	printf("OFF: %d\n", (int)(nodep - fit_blob));
104	(void) munmap((void *)fit_blob, fsbuf.st_size);
105
106	close(ffd);
107	exit(EXIT_SUCCESS);
108}
109