1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Copyright (c) 2015, Linaro Limited 4 */ 5#include <linux/linkage.h> 6 7#include <asm/opcodes-sec.h> 8#include <asm/opcodes-virt.h> 9 10 .section .text.efi_runtime 11 12#define UNWIND(x...) 13 /* 14 * Wrap c macros in asm macros to delay expansion until after the 15 * SMCCC asm macro is expanded. 16 */ 17 .macro SMCCC_SMC 18 __SMC(0) 19 .endm 20 21 .macro SMCCC_HVC 22 __HVC(0) 23 .endm 24 25 .macro SMCCC instr 26UNWIND( .fnstart) 27 mov r12, sp 28 push {r4-r7} 29UNWIND( .save {r4-r7}) 30 ldm r12, {r4-r7} 31 \instr 32 pop {r4-r7} 33 ldr r12, [sp, #(4 * 4)] 34 stm r12, {r0-r3} 35 bx lr 36UNWIND( .fnend) 37 .endm 38 39/* 40 * void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2, 41 * unsigned long a3, unsigned long a4, unsigned long a5, 42 * unsigned long a6, unsigned long a7, struct arm_smccc_res *res, 43 * struct arm_smccc_quirk *quirk) 44 */ 45ENTRY(__arm_smccc_smc) 46 SMCCC SMCCC_SMC 47ENDPROC(__arm_smccc_smc) 48 49/* 50 * void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2, 51 * unsigned long a3, unsigned long a4, unsigned long a5, 52 * unsigned long a6, unsigned long a7, struct arm_smccc_res *res, 53 * struct arm_smccc_quirk *quirk) 54 */ 55ENTRY(__arm_smccc_hvc) 56 SMCCC SMCCC_HVC 57ENDPROC(__arm_smccc_hvc) 58