fit_common.c 2.1 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. return fdt_check_header(ptr);
  28. }
  29. int fit_check_image_types(uint8_t type)
  30. {
  31. if (type == IH_TYPE_FLATDT)
  32. return EXIT_SUCCESS;
  33. else
  34. return EXIT_FAILURE;
  35. }
  36. int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc,
  37. void **blobp, struct stat *sbuf, bool delete_on_error)
  38. {
  39. void *ptr;
  40. int fd;
  41. /* Load FIT blob into memory (we need to write hashes/signatures) */
  42. fd = open(fname, O_RDWR | O_BINARY);
  43. if (fd < 0) {
  44. fprintf(stderr, "%s: Can't open %s: %s\n",
  45. cmdname, fname, strerror(errno));
  46. goto err;
  47. }
  48. if (fstat(fd, sbuf) < 0) {
  49. fprintf(stderr, "%s: Can't stat %s: %s\n",
  50. cmdname, fname, strerror(errno));
  51. goto err;
  52. }
  53. if (size_inc) {
  54. sbuf->st_size += size_inc;
  55. if (ftruncate(fd, sbuf->st_size)) {
  56. fprintf(stderr, "%s: Can't expand %s: %s\n",
  57. cmdname, fname, strerror(errno));
  58. goto err;
  59. }
  60. }
  61. errno = 0;
  62. ptr = mmap(0, sbuf->st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
  63. if ((ptr == MAP_FAILED) || (errno != 0)) {
  64. fprintf(stderr, "%s: Can't read %s: %s\n",
  65. cmdname, fname, strerror(errno));
  66. goto err;
  67. }
  68. /* check if ptr has a valid blob */
  69. if (fdt_check_header(ptr)) {
  70. fprintf(stderr, "%s: Invalid FIT blob\n", cmdname);
  71. goto err;
  72. }
  73. /* expand if needed */
  74. if (size_inc) {
  75. int ret;
  76. ret = fdt_open_into(ptr, ptr, sbuf->st_size);
  77. if (ret) {
  78. fprintf(stderr, "%s: Cannot expand FDT: %s\n",
  79. cmdname, fdt_strerror(ret));
  80. goto err;
  81. }
  82. }
  83. *blobp = ptr;
  84. return fd;
  85. err:
  86. if (fd >= 0)
  87. close(fd);
  88. if (delete_on_error)
  89. unlink(fname);
  90. return -1;
  91. }