1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2014 4 * DENX Software Engineering 5 * Heiko Schocher <hs (at) 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 (at) denx.de 16 * 17 * Updated-by: Prafulla Wadaskar <prafulla (at) 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 29 void 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 39 int 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); 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
