1 /* 2 * (C) Copyright 2014 3 * DENX Software Engineering 4 * Heiko Schocher <hs@denx.de> 5 * 6 * fit_info: print the offset and the len of a property from 7 * node in a fit file. 8 * 9 * Based on: 10 * (C) Copyright 2008 Semihalf 11 * 12 * (C) Copyright 2000-2004 13 * DENX Software Engineering 14 * Wolfgang Denk, wd@denx.de 15 * 16 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com> 17 * FIT image specific code abstracted from mkimage.c 18 * some functions added to address abstraction 19 * 20 * All rights reserved. 21 * 22 * SPDX-License-Identifier: GPL-2.0+ 23 */ 24 25 #include "mkimage.h" 26 #include "fit_common.h" 27 #include <image.h> 28 #include <u-boot/crc.h> 29 30 void usage(char *cmdname) 31 { 32 fprintf(stderr, "Usage: %s -f fit file -n node -p property\n" 33 " -f ==> set fit file which is used'\n" 34 " -n ==> set node name'\n" 35 " -p ==> set property name'\n", 36 cmdname); 37 exit(EXIT_FAILURE); 38 } 39 40 int main(int argc, char **argv) 41 { 42 int ffd = -1; 43 struct stat fsbuf; 44 void *fit_blob; 45 int len; 46 int nodeoffset; /* node offset from libfdt */ 47 const void *nodep; /* property node pointer */ 48 char *fdtfile = NULL; 49 char *nodename = NULL; 50 char *propertyname = NULL; 51 char cmdname[256]; 52 int c; 53 54 strncpy(cmdname, *argv, sizeof(cmdname) - 1); 55 cmdname[sizeof(cmdname) - 1] = '\0'; 56 while ((c = getopt(argc, argv, "f:n:p:")) != -1) 57 switch (c) { 58 case 'f': 59 fdtfile = optarg; 60 break; 61 case 'n': 62 nodename = optarg; 63 break; 64 case 'p': 65 propertyname = optarg; 66 break; 67 default: 68 usage(cmdname); 69 break; 70 } 71 72 if (!fdtfile) { 73 fprintf(stderr, "%s: Missing fdt file\n", *argv); 74 usage(*argv); 75 } 76 if (!nodename) { 77 fprintf(stderr, "%s: Missing node name\n", *argv); 78 usage(*argv); 79 } 80 if (!propertyname) { 81 fprintf(stderr, "%s: Missing property name\n", *argv); 82 usage(*argv); 83 } 84 ffd = mmap_fdt(cmdname, fdtfile, 0, &fit_blob, &fsbuf, false); 85 86 if (ffd < 0) { 87 printf("Could not open %s\n", fdtfile); 88 exit(EXIT_FAILURE); 89 } 90 91 nodeoffset = fdt_path_offset(fit_blob, nodename); 92 if (nodeoffset < 0) { 93 printf("%s not found.", nodename); 94 exit(EXIT_FAILURE); 95 } 96 nodep = fdt_getprop(fit_blob, nodeoffset, propertyname, &len); 97 if (len == 0) { 98 printf("len == 0 %s\n", propertyname); 99 exit(EXIT_FAILURE); 100 } 101 102 printf("NAME: %s\n", fit_get_name(fit_blob, nodeoffset, NULL)); 103 printf("LEN: %d\n", len); 104 printf("OFF: %d\n", (int)(nodep - fit_blob)); 105 (void) munmap((void *)fit_blob, fsbuf.st_size); 106 107 close(ffd); 108 exit(EXIT_SUCCESS); 109 } 110