tools/fit_info.c

   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 }