smccc-call.S 1.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (c) 2015, Linaro Limited
  4. */
  5. #include <linux/linkage.h>
  6. #include <linux/arm-smccc.h>
  7. #include <asm/asm-offsets.h>
  8. #include <asm/assembler.h>
  9. .macro SMCCC instr
  10. \instr #0
  11. ldr x4, [sp]
  12. stp x0, x1, [x4, #ARM_SMCCC_RES_X0_OFFS]
  13. stp x2, x3, [x4, #ARM_SMCCC_RES_X2_OFFS]
  14. ldr x4, [sp, #8]
  15. cbz x4, 1f /* no quirk structure */
  16. ldr x9, [x4, #ARM_SMCCC_QUIRK_ID_OFFS]
  17. cmp x9, #ARM_SMCCC_QUIRK_QCOM_A6
  18. b.ne 1f
  19. str x6, [x4, ARM_SMCCC_QUIRK_STATE_OFFS]
  20. 1: ret
  21. .endm
  22. /*
  23. * void arm_smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
  24. * unsigned long a3, unsigned long a4, unsigned long a5,
  25. * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
  26. * struct arm_smccc_quirk *quirk)
  27. */
  28. SYM_FUNC_START(__arm_smccc_smc)
  29. SMCCC smc
  30. SYM_FUNC_END(__arm_smccc_smc)
  31. EXPORT_SYMBOL(__arm_smccc_smc)
  32. /*
  33. * void arm_smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
  34. * unsigned long a3, unsigned long a4, unsigned long a5,
  35. * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
  36. * struct arm_smccc_quirk *quirk)
  37. */
  38. SYM_FUNC_START(__arm_smccc_hvc)
  39. SMCCC hvc
  40. SYM_FUNC_END(__arm_smccc_hvc)
  41. EXPORT_SYMBOL(__arm_smccc_hvc)