bootmeth_qfw.c 2.3 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Bootmethod for QEMU qfw
  4. *
  5. * Copyright 2023 Google LLC
  6. * Written by Simon Glass <sjg@chromium.org>
  7. */
  8. #define LOG_CATEGORY UCLASS_BOOTSTD
  9. #include <common.h>
  10. #include <command.h>
  11. #include <bootdev.h>
  12. #include <bootflow.h>
  13. #include <bootmeth.h>
  14. #include <env.h>
  15. #include <qfw.h>
  16. #include <dm.h>
  17. static int qfw_check(struct udevice *dev, struct bootflow_iter *iter)
  18. {
  19. const struct udevice *media = dev_get_parent(iter->dev);
  20. enum uclass_id id = device_get_uclass_id(media);
  21. log_debug("media=%s\n", media->name);
  22. if (id == UCLASS_QFW)
  23. return 0;
  24. return -ENOTSUPP;
  25. }
  26. static int qfw_read_bootflow(struct udevice *dev, struct bootflow *bflow)
  27. {
  28. struct udevice *qfw_dev = dev_get_parent(bflow->dev);
  29. ulong load, initrd;
  30. int ret;
  31. load = env_get_hex("kernel_addr_r", 0);
  32. initrd = env_get_hex("ramdisk_addr_r", 0);
  33. log_debug("setup kernel %s %lx %lx\n", qfw_dev->name, load, initrd);
  34. bflow->name = strdup("qfw");
  35. if (!bflow->name)
  36. return log_msg_ret("name", -ENOMEM);
  37. ret = qemu_fwcfg_setup_kernel(qfw_dev, load, initrd);
  38. log_debug("setup kernel result %d\n", ret);
  39. if (ret)
  40. return log_msg_ret("cmd", -EIO);
  41. bflow->state = BOOTFLOWST_READY;
  42. return 0;
  43. }
  44. static int qfw_read_file(struct udevice *dev, struct bootflow *bflow,
  45. const char *file_path, ulong addr, ulong *sizep)
  46. {
  47. return -ENOSYS;
  48. }
  49. static int qfw_boot(struct udevice *dev, struct bootflow *bflow)
  50. {
  51. int ret;
  52. ret = run_command("booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdtcontroladdr}",
  53. 0);
  54. if (ret) {
  55. ret = run_command("bootz ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} "
  56. "${fdtcontroladdr}", 0);
  57. }
  58. return ret ? -EIO : 0;
  59. }
  60. static int qfw_bootmeth_bind(struct udevice *dev)
  61. {
  62. struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
  63. plat->desc = "QEMU boot using firmware interface";
  64. return 0;
  65. }
  66. static struct bootmeth_ops qfw_bootmeth_ops = {
  67. .check = qfw_check,
  68. .read_bootflow = qfw_read_bootflow,
  69. .read_file = qfw_read_file,
  70. .boot = qfw_boot,
  71. };
  72. static const struct udevice_id qfw_bootmeth_ids[] = {
  73. { .compatible = "u-boot,qfw-extlinux" },
  74. { }
  75. };
  76. U_BOOT_DRIVER(bootmeth_qfw) = {
  77. .name = "bootmeth_qfw",
  78. .id = UCLASS_BOOTMETH,
  79. .of_match = qfw_bootmeth_ids,
  80. .ops = &qfw_bootmeth_ops,
  81. .bind = qfw_bootmeth_bind,
  82. };