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