74 lines
1.9 KiB
ArmAsm
74 lines
1.9 KiB
ArmAsm
/*
|
|
* Copyright (c) 2015, Linaro Limited
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
* may be copied, distributed, and modified under those terms.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
#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)
|