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smccc-call.S

smccc-call.S 1.5 KB
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  1. /*
    2. 

  2.  * Copyright (c) 2015, Linaro Limited
    3. 

  3.  *
    4. 

  4.  * This program is free software; you can redistribute it and/or modify
    5. 

  5.  * it under the terms of the GNU General Public License Version 2 as
    6. 

  6.  * published by the Free Software Foundation.
    7. 

  7.  *
    8. 

  8.  * This program is distributed in the hope that it will be useful,
    9. 

  9.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    10. 

  10.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    11. 

  11.  * GNU General Public License for more details.
    12. 

  12.  *
    13. 

  13.  */
    14. 

  14. #include <linux/linkage.h>
    15. 

  15. #include <linux/arm-smccc.h>
    16. 

  16. #include <asm/asm-offsets.h>
    17. 

  17. 

  18. 	.macro SMCCC instr
    19. 

  19. 	.cfi_startproc
    20. 

  20. 	\instr	#0
    21. 

  21. 	ldr	x4, [sp]
    22. 

  22. 	stp	x0, x1, [x4, #ARM_SMCCC_RES_X0_OFFS]
    23. 

  23. 	stp	x2, x3, [x4, #ARM_SMCCC_RES_X2_OFFS]
    24. 

  24. 	ldr	x4, [sp, #8]
    25. 

  25. 	cbz	x4, 1f /* no quirk structure */
    26. 

  26. 	ldr	x9, [x4, #ARM_SMCCC_QUIRK_ID_OFFS]
    27. 

  27. 	cmp	x9, #ARM_SMCCC_QUIRK_QCOM_A6
    28. 

  28. 	b.ne	1f
    29. 

  29. 	str	x6, [x4, ARM_SMCCC_QUIRK_STATE_OFFS]
    30. 

  30. 1:	ret
    31. 

  31. 	.cfi_endproc
    32. 

  32. 	.endm
    33. 

  33. 

  34. /*
    35. 

  35.  * void arm_smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
    36. 

  36.  *		  unsigned long a3, unsigned long a4, unsigned long a5,
    37. 

  37.  *		  unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
    38. 

  38.  *		  struct arm_smccc_quirk *quirk)
    39. 

  39.  */
    40. 

  40. ENTRY(__arm_smccc_smc)
    41. 

  41. 	SMCCC	smc
    42. 

  42. ENDPROC(__arm_smccc_smc)
    43. 

  43. 

  44. /*
    45. 

  45.  * void arm_smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
    46. 

  46.  *		  unsigned long a3, unsigned long a4, unsigned long a5,
    47. 

  47.  *		  unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
    48. 

  48.  *		  struct arm_smccc_quirk *quirk)
    49. 

  49.  */
    50. 

  50. ENTRY(__arm_smccc_hvc)
    51. 

  51. 	SMCCC	hvc
    52. 

  52. ENDPROC(__arm_smccc_hvc)
    53. 

  53.