bootm.c 1.5 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162
  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2011 The Chromium OS Authors.
  4. * Copyright (c) 2015 Sjoerd Simons <sjoerd.simons@collabora.co.uk>
  5. */
  6. #include <common.h>
  7. #include <bootstage.h>
  8. #include <asm/io.h>
  9. #define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818
  10. struct arm_z_header {
  11. uint32_t code[9];
  12. uint32_t zi_magic;
  13. uint32_t zi_start;
  14. uint32_t zi_end;
  15. } __attribute__ ((__packed__));
  16. int bootz_setup(ulong image, ulong *start, ulong *end)
  17. {
  18. uint8_t *zimage = map_sysmem(image, 0);
  19. struct arm_z_header *arm_hdr = (struct arm_z_header *)zimage;
  20. int ret = 0;
  21. if (memcmp(zimage + 0x202, "HdrS", 4) == 0) {
  22. uint8_t setup_sects = *(zimage + 0x1f1);
  23. uint32_t syssize =
  24. le32_to_cpu(*(uint32_t *)(zimage + 0x1f4));
  25. *start = 0;
  26. *end = (setup_sects + 1) * 512 + syssize * 16;
  27. printf("setting up X86 zImage [ %ld - %ld ]\n",
  28. *start, *end);
  29. } else if (le32_to_cpu(arm_hdr->zi_magic) == LINUX_ARM_ZIMAGE_MAGIC) {
  30. *start = le32_to_cpu(arm_hdr->zi_start);
  31. *end = le32_to_cpu(arm_hdr->zi_end);
  32. printf("setting up ARM zImage [ %ld - %ld ]\n",
  33. *start, *end);
  34. } else {
  35. printf("Unrecognized zImage\n");
  36. ret = 1;
  37. }
  38. unmap_sysmem((void *)image);
  39. return ret;
  40. }
  41. int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
  42. {
  43. if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
  44. bootstage_mark(BOOTSTAGE_ID_RUN_OS);
  45. printf("## Transferring control to Linux (at address %08lx)...\n",
  46. images->ep);
  47. printf("sandbox: continuing, as we cannot run Linux\n");
  48. }
  49. return 0;
  50. }