bootm.c 1.5 KB

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  1. /*
  2. * Copyright (c) 2011 The Chromium OS Authors.
  3. * Copyright (c) 2015 Sjoerd Simons <sjoerd.simons@collabora.co.uk>
  4. * SPDX-License-Identifier: GPL-2.0+
  5. */
  6. #include <common.h>
  7. #include <asm/io.h>
  8. #define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818
  9. struct arm_z_header {
  10. uint32_t code[9];
  11. uint32_t zi_magic;
  12. uint32_t zi_start;
  13. uint32_t zi_end;
  14. } __attribute__ ((__packed__));
  15. int bootz_setup(ulong image, ulong *start, ulong *end)
  16. {
  17. uint8_t *zimage = map_sysmem(image, 0);
  18. struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage;
  19. int ret = 0;
  20. if (memcmp(zimage + 0x202, "HdrS", 4) == 0) {
  21. uint8_t setup_sects = *(zimage + 0x1f1);
  22. uint32_t syssize =
  23. le32_to_cpu(*(uint32_t *)(zimage + 0x1f4));
  24. *start = 0;
  25. *end = (setup_sects + 1) * 512 + syssize * 16;
  26. printf("setting up X86 zImage [ %ld - %ld ]\n",
  27. *start, *end);
  28. } else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) {
  29. *start = le32_to_cpu(arm_hdr->zi_start);
  30. *end = le32_to_cpu(arm_hdr->zi_end);
  31. printf("setting up ARM zImage [ %ld - %ld ]\n",
  32. *start, *end);
  33. } else {
  34. printf("Unrecognized zImage\n");
  35. ret = 1;
  36. }
  37. unmap_sysmem((void *)image);
  38. return ret;
  39. }
  40. int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
  41. {
  42. if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
  43. bootstage_mark(BOOTSTAGE_ID_RUN_OS);
  44. printf("## Transferring control to Linux (at address %08lx)...\n",
  45. images->ep);
  46. printf("sandbox: continuing, as we cannot run Linux\n");
  47. }
  48. return 0;
  49. }