fit_common.c 2.2 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2014
  4. * DENX Software Engineering
  5. * Heiko Schocher <hs@denx.de>
  6. *
  7. * (C) Copyright 2008 Semihalf
  8. *
  9. * (C) Copyright 2000-2004
  10. * DENX Software Engineering
  11. * Wolfgang Denk, wd@denx.de
  12. *
  13. * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
  14. * FIT image specific code abstracted from mkimage.c
  15. * some functions added to address abstraction
  16. *
  17. * All rights reserved.
  18. */
  19. #include "imagetool.h"
  20. #include "mkimage.h"
  21. #include "fit_common.h"
  22. #include <image.h>
  23. #include <u-boot/crc.h>
  24. int fit_verify_header(unsigned char *ptr, int image_size,
  25. struct image_tool_params *params)
  26. {
  27. if (fdt_check_header(ptr) != EXIT_SUCCESS || !fit_check_format(ptr))
  28. return EXIT_FAILURE;
  29. return EXIT_SUCCESS;
  30. }
  31. int fit_check_image_types(uint8_t type)
  32. {
  33. if (type == IH_TYPE_FLATDT)
  34. return EXIT_SUCCESS;
  35. else
  36. return EXIT_FAILURE;
  37. }
  38. int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc,
  39. void **blobp, struct stat *sbuf, bool delete_on_error)
  40. {
  41. void *ptr;
  42. int fd;
  43. /* Load FIT blob into memory (we need to write hashes/signatures) */
  44. fd = open(fname, O_RDWR | O_BINARY);
  45. if (fd < 0) {
  46. fprintf(stderr, "%s: Can't open %s: %s\n",
  47. cmdname, fname, strerror(errno));
  48. goto err;
  49. }
  50. if (fstat(fd, sbuf) < 0) {
  51. fprintf(stderr, "%s: Can't stat %s: %s\n",
  52. cmdname, fname, strerror(errno));
  53. goto err;
  54. }
  55. if (size_inc) {
  56. sbuf->st_size += size_inc;
  57. if (ftruncate(fd, sbuf->st_size)) {
  58. fprintf(stderr, "%s: Can't expand %s: %s\n",
  59. cmdname, fname, strerror(errno));
  60. goto err;
  61. }
  62. }
  63. errno = 0;
  64. ptr = mmap(0, sbuf->st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
  65. if ((ptr == MAP_FAILED) || (errno != 0)) {
  66. fprintf(stderr, "%s: Can't read %s: %s\n",
  67. cmdname, fname, strerror(errno));
  68. goto err;
  69. }
  70. /* check if ptr has a valid blob */
  71. if (fdt_check_header(ptr)) {
  72. fprintf(stderr, "%s: Invalid FIT blob\n", cmdname);
  73. goto err;
  74. }
  75. /* expand if needed */
  76. if (size_inc) {
  77. int ret;
  78. ret = fdt_open_into(ptr, ptr, sbuf->st_size);
  79. if (ret) {
  80. fprintf(stderr, "%s: Cannot expand FDT: %s\n",
  81. cmdname, fdt_strerror(ret));
  82. goto err;
  83. }
  84. }
  85. *blobp = ptr;
  86. return fd;
  87. err:
  88. if (fd >= 0)
  89. close(fd);
  90. if (delete_on_error)
  91. unlink(fname);
  92. return -1;
  93. }