fdt_reset.c 1.3 KB

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  1. /*
  2. * SPDX-License-Identifier: BSD-2-Clause
  3. *
  4. * Copyright (c) 2020 Western Digital Corporation or its affiliates.
  5. *
  6. * Authors:
  7. * Anup Patel <anup.patel@wdc.com>
  8. */
  9. #include <sbi/sbi_console.h>
  10. #include <sbi/sbi_error.h>
  11. #include <sbi/sbi_scratch.h>
  12. #include <sbi_utils/fdt/fdt_helper.h>
  13. #include <sbi_utils/reset/fdt_reset.h>
  14. extern struct fdt_reset fdt_poweroff_gpio;
  15. extern struct fdt_reset fdt_reset_gpio;
  16. extern struct fdt_reset fdt_reset_htif;
  17. extern struct fdt_reset fdt_reset_sifive_test;
  18. extern struct fdt_reset fdt_reset_sunxi_wdt;
  19. extern struct fdt_reset fdt_reset_thead;
  20. static struct fdt_reset *reset_drivers[] = {
  21. &fdt_poweroff_gpio,
  22. &fdt_reset_gpio,
  23. &fdt_reset_htif,
  24. &fdt_reset_sifive_test,
  25. &fdt_reset_sunxi_wdt,
  26. &fdt_reset_thead,
  27. };
  28. int fdt_reset_driver_init(void *fdt, struct fdt_reset *drv)
  29. {
  30. int noff, rc = SBI_ENODEV;
  31. const struct fdt_match *match;
  32. noff = fdt_find_match(fdt, -1, drv->match_table, &match);
  33. if (noff < 0)
  34. return SBI_ENODEV;
  35. if (drv->init) {
  36. rc = drv->init(fdt, noff, match);
  37. if (rc && rc != SBI_ENODEV) {
  38. sbi_printf("%s: %s init failed, %d\n",
  39. __func__, match->compatible, rc);
  40. }
  41. }
  42. return rc;
  43. }
  44. void fdt_reset_init(void)
  45. {
  46. int pos;
  47. void *fdt = fdt_get_address();
  48. for (pos = 0; pos < array_size(reset_drivers); pos++)
  49. fdt_reset_driver_init(fdt, reset_drivers[pos]);
  50. }