xref: /openbmc/linux/arch/arm64/kernel/smccc-call.S (revision 82df5b73)
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
8#include <asm/asm-offsets.h>
9#include <asm/assembler.h>
10
11	.macro SMCCC instr
12	.cfi_startproc
13	\instr	#0
14	ldr	x4, [sp]
15	stp	x0, x1, [x4, #ARM_SMCCC_RES_X0_OFFS]
16	stp	x2, x3, [x4, #ARM_SMCCC_RES_X2_OFFS]
17	ldr	x4, [sp, #8]
18	cbz	x4, 1f /* no quirk structure */
19	ldr	x9, [x4, #ARM_SMCCC_QUIRK_ID_OFFS]
20	cmp	x9, #ARM_SMCCC_QUIRK_QCOM_A6
21	b.ne	1f
22	str	x6, [x4, ARM_SMCCC_QUIRK_STATE_OFFS]
231:	ret
24	.cfi_endproc
25	.endm
26
27/*
28 * void arm_smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
29 *		  unsigned long a3, unsigned long a4, unsigned long a5,
30 *		  unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
31 *		  struct arm_smccc_quirk *quirk)
32 */
33SYM_FUNC_START(__arm_smccc_smc)
34	SMCCC	smc
35SYM_FUNC_END(__arm_smccc_smc)
36EXPORT_SYMBOL(__arm_smccc_smc)
37
38/*
39 * void arm_smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
40 *		  unsigned long a3, unsigned long a4, unsigned long a5,
41 *		  unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
42 *		  struct arm_smccc_quirk *quirk)
43 */
44SYM_FUNC_START(__arm_smccc_hvc)
45	SMCCC	hvc
46SYM_FUNC_END(__arm_smccc_hvc)
47EXPORT_SYMBOL(__arm_smccc_hvc)
48