sysreset_psci.c 814 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2017 Masahiro Yamada <yamada.masahiro@socionext.com>
  4. */
  5. #include <common.h>
  6. #include <dm.h>
  7. #include <sysreset.h>
  8. #include <linux/errno.h>
  9. #include <linux/psci.h>
  10. static int psci_sysreset_request(struct udevice *dev, enum sysreset_t type)
  11. {
  12. unsigned long function_id;
  13. switch (type) {
  14. case SYSRESET_WARM:
  15. case SYSRESET_COLD:
  16. function_id = PSCI_0_2_FN_SYSTEM_RESET;
  17. break;
  18. case SYSRESET_POWER_OFF:
  19. function_id = PSCI_0_2_FN_SYSTEM_OFF;
  20. break;
  21. default:
  22. return -ENOSYS;
  23. }
  24. invoke_psci_fn(function_id, 0, 0, 0);
  25. return -EINPROGRESS;
  26. }
  27. static struct sysreset_ops psci_sysreset_ops = {
  28. .request = psci_sysreset_request,
  29. };
  30. U_BOOT_DRIVER(psci_sysreset) = {
  31. .name = "psci-sysreset",
  32. .id = UCLASS_SYSRESET,
  33. .ops = &psci_sysreset_ops,
  34. };