xref: /openbmc/u-boot/arch/arm/cpu/armv8/smccc-call.S (revision 872cfa20)
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2015, Linaro Limited
4 */
5#include <linux/linkage.h>
6#include <linux/arm-smccc.h>
7#include <generated/asm-offsets.h>
8
9#ifdef CONFIG_EFI_LOADER
10	.section	.text.efi_runtime
11#endif
12
13	.macro SMCCC instr
14	.cfi_startproc
15	\instr	#0
16	ldr	x4, [sp]
17	stp	x0, x1, [x4, #ARM_SMCCC_RES_X0_OFFS]
18	stp	x2, x3, [x4, #ARM_SMCCC_RES_X2_OFFS]
19	ldr	x4, [sp, #8]
20	cbz	x4, 1f /* no quirk structure */
21	ldr	x9, [x4, #ARM_SMCCC_QUIRK_ID_OFFS]
22	cmp	x9, #ARM_SMCCC_QUIRK_QCOM_A6
23	b.ne	1f
24	str	x6, [x4, ARM_SMCCC_QUIRK_STATE_OFFS]
251:	ret
26	.cfi_endproc
27	.endm
28
29/*
30 * void arm_smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
31 *		  unsigned long a3, unsigned long a4, unsigned long a5,
32 *		  unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
33 *		  struct arm_smccc_quirk *quirk)
34 */
35ENTRY(__arm_smccc_smc)
36	SMCCC	smc
37ENDPROC(__arm_smccc_smc)
38
39/*
40 * void arm_smccc_hvc(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_hvc)
46	SMCCC	hvc
47ENDPROC(__arm_smccc_hvc)
48