fit_info.c 2.4 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108
  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. #include "mkimage.h"
  24. #include "fit_common.h"
  25. #include <image.h>
  26. #include <u-boot/crc.h>
  27. void usage(char *cmdname)
  28. {
  29. fprintf(stderr, "Usage: %s -f fit file -n node -p property\n"
  30. " -f ==> set fit file which is used'\n"
  31. " -n ==> set node name'\n"
  32. " -p ==> set property name'\n",
  33. cmdname);
  34. exit(EXIT_FAILURE);
  35. }
  36. int main(int argc, char **argv)
  37. {
  38. int ffd = -1;
  39. struct stat fsbuf;
  40. void *fit_blob;
  41. int len;
  42. int nodeoffset; /* node offset from libfdt */
  43. const void *nodep; /* property node pointer */
  44. char *fdtfile = NULL;
  45. char *nodename = NULL;
  46. char *propertyname = NULL;
  47. char cmdname[256];
  48. int c;
  49. strncpy(cmdname, *argv, sizeof(cmdname) - 1);
  50. cmdname[sizeof(cmdname) - 1] = '\0';
  51. while ((c = getopt(argc, argv, "f:n:p:")) != -1)
  52. switch (c) {
  53. case 'f':
  54. fdtfile = optarg;
  55. break;
  56. case 'n':
  57. nodename = optarg;
  58. break;
  59. case 'p':
  60. propertyname = optarg;
  61. break;
  62. default:
  63. usage(cmdname);
  64. break;
  65. }
  66. if (!fdtfile) {
  67. fprintf(stderr, "%s: Missing fdt file\n", *argv);
  68. usage(*argv);
  69. }
  70. if (!nodename) {
  71. fprintf(stderr, "%s: Missing node name\n", *argv);
  72. usage(*argv);
  73. }
  74. if (!propertyname) {
  75. fprintf(stderr, "%s: Missing property name\n", *argv);
  76. usage(*argv);
  77. }
  78. ffd = mmap_fdt(cmdname, fdtfile, 0, &fit_blob, &fsbuf, false, false);
  79. if (ffd < 0) {
  80. printf("Could not open %s\n", fdtfile);
  81. exit(EXIT_FAILURE);
  82. }
  83. nodeoffset = fdt_path_offset(fit_blob, nodename);
  84. if (nodeoffset < 0) {
  85. printf("%s not found.", nodename);
  86. exit(EXIT_FAILURE);
  87. }
  88. nodep = fdt_getprop(fit_blob, nodeoffset, propertyname, &len);
  89. if (len == 0) {
  90. printf("len == 0 %s\n", propertyname);
  91. exit(EXIT_FAILURE);
  92. }
  93. printf("NAME: %s\n", fit_get_name(fit_blob, nodeoffset, NULL));
  94. printf("LEN: %d\n", len);
  95. printf("OFF: %d\n", (int)(nodep - fit_blob));
  96. (void) munmap((void *)fit_blob, fsbuf.st_size);
  97. close(ffd);
  98. exit(EXIT_SUCCESS);
  99. }