smccc.c 1.7 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright 2018
  4. * Michalis Pappas <mpappas@fastmail.fm>
  5. */
  6. #include <asm/psci.h>
  7. #include <common.h>
  8. #include <command.h>
  9. #include <linux/arm-smccc.h>
  10. #include <linux/compiler.h>
  11. #include <linux/psci.h>
  12. static int do_call(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  13. {
  14. struct arm_smccc_res res;
  15. unsigned long fid;
  16. unsigned long a1;
  17. unsigned long a2;
  18. unsigned long a3;
  19. unsigned long a4;
  20. unsigned long a5;
  21. unsigned long a6;
  22. unsigned long a7;
  23. if (argc < 2)
  24. return CMD_RET_USAGE;
  25. fid = simple_strtoul(argv[1], NULL, 16);
  26. a1 = argc > 2 ? simple_strtoul(argv[2], NULL, 16) : 0;
  27. a2 = argc > 3 ? simple_strtoul(argv[3], NULL, 16) : 0;
  28. a3 = argc > 4 ? simple_strtoul(argv[4], NULL, 16) : 0;
  29. a4 = argc > 5 ? simple_strtoul(argv[5], NULL, 16) : 0;
  30. a5 = argc > 6 ? simple_strtoul(argv[6], NULL, 16) : 0;
  31. a6 = argc > 7 ? simple_strtoul(argv[7], NULL, 16) : 0;
  32. a7 = argc > 8 ? simple_strtoul(argv[8], NULL, 16) : 0;
  33. if (!strcmp(argv[0], "smc"))
  34. arm_smccc_smc(fid, a1, a2, a3, a4, a5, a6, a7, &res);
  35. else
  36. arm_smccc_hvc(fid, a1, a2, a3, a4, a5, a6, a7, &res);
  37. printf("Res: %ld %ld %ld %ld\n", res.a0, res.a1, res.a2, res.a3);
  38. return 0;
  39. }
  40. #ifdef CONFIG_CMD_SMC
  41. U_BOOT_CMD(
  42. smc, 8, 2, do_call,
  43. "Issue a Secure Monitor Call",
  44. "<fid> [arg1 ... arg6] [id]\n"
  45. " - fid Function ID\n"
  46. " - arg SMC arguments, passed to X1-X6 (default to zero)\n"
  47. " - id Secure OS ID / Session ID, passed to W7 (defaults to zero)\n"
  48. );
  49. #endif
  50. #ifdef CONFIG_CMD_HVC
  51. U_BOOT_CMD(
  52. hvc, 8, 2, do_call,
  53. "Issue a Hypervisor Call",
  54. "<fid> [arg1...arg7] [id]\n"
  55. " - fid Function ID\n"
  56. " - arg HVC arguments, passed to X1-X6 (default to zero)\n"
  57. " - id Session ID, passed to W7 (defaults to zero)\n"
  58. );
  59. #endif