65 lines
1.4 KiB
ArmAsm
65 lines
1.4 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2015, Linaro Limited
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*/
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#include <linux/linkage.h>
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#include <linux/arm-smccc.h>
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#include <asm/asm-offsets.h>
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#include <asm/opcodes-sec.h>
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#include <asm/opcodes-virt.h>
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#include <asm/unwind.h>
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/*
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* Wrap c macros in asm macros to delay expansion until after the
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* SMCCC asm macro is expanded.
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*/
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.macro SMCCC_SMC
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__SMC(0)
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.endm
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.macro SMCCC_HVC
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__HVC(0)
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.endm
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.macro SMCCC instr
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UNWIND( .fnstart)
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mov r12, sp
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push {r4-r7}
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UNWIND( .save {r4-r7})
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ldm r12, {r4-r7}
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\instr
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ldr r4, [sp, #36]
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cmp r4, #0
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beq 1f // No quirk structure
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ldr r5, [r4, #ARM_SMCCC_QUIRK_ID_OFFS]
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cmp r5, #ARM_SMCCC_QUIRK_QCOM_A6
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bne 1f // No quirk present
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str r6, [r4, #ARM_SMCCC_QUIRK_STATE_OFFS]
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1: pop {r4-r7}
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ldr r12, [sp, #(4 * 4)]
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stm r12, {r0-r3}
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bx lr
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UNWIND( .fnend)
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.endm
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/*
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* void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
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* unsigned long a3, unsigned long a4, unsigned long a5,
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* unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
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* struct arm_smccc_quirk *quirk)
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*/
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ENTRY(__arm_smccc_smc)
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SMCCC SMCCC_SMC
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ENDPROC(__arm_smccc_smc)
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/*
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* void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
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* unsigned long a3, unsigned long a4, unsigned long a5,
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* unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
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* struct arm_smccc_quirk *quirk)
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*/
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ENTRY(__arm_smccc_hvc)
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SMCCC SMCCC_HVC
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ENDPROC(__arm_smccc_hvc)
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