git.sur5r.net Git - u-boot/blob - arch/arm/cpu/armv8/smccc-call.S

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