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https://github.com/brain-hackers/u-boot-brain
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c2da86f39e
Imports ARM SMC Calling Convention code from Linux 4.11-rc6. The files have been copied as follows: [Linux] [U-Boot] arch/arm/kernel/smccc-call.S -> arch/arm/cpu/armv7/smccc-call.S arch/arm64/kernel/smccc-call.S -> arch/arm/cpu/armv8/smccc-call.S arch/arm/include/asm/opcodes* -> arch/arm/include/asm/opcodes* include/linux/arm-smccc.h -> include/linux/arm-smccc.h Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
65 lines
1.6 KiB
ArmAsm
65 lines
1.6 KiB
ArmAsm
/*
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* Copyright (c) 2015, Linaro Limited
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/linkage.h>
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#include <asm/opcodes-sec.h>
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#include <asm/opcodes-virt.h>
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#include <asm/unwind.h>
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/*
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* Wrap c macros in asm macros to delay expansion until after the
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* SMCCC asm macro is expanded.
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*/
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.macro SMCCC_SMC
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__SMC(0)
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.endm
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.macro SMCCC_HVC
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__HVC(0)
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.endm
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.macro SMCCC instr
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UNWIND( .fnstart)
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mov r12, sp
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push {r4-r7}
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UNWIND( .save {r4-r7})
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ldm r12, {r4-r7}
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\instr
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pop {r4-r7}
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ldr r12, [sp, #(4 * 4)]
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stm r12, {r0-r3}
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bx lr
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UNWIND( .fnend)
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.endm
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/*
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* void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
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* unsigned long a3, unsigned long a4, unsigned long a5,
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* unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
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* struct arm_smccc_quirk *quirk)
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*/
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ENTRY(__arm_smccc_smc)
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SMCCC SMCCC_SMC
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ENDPROC(__arm_smccc_smc)
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/*
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* void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
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* unsigned long a3, unsigned long a4, unsigned long a5,
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* unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
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* struct arm_smccc_quirk *quirk)
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*/
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ENTRY(__arm_smccc_hvc)
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SMCCC SMCCC_HVC
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ENDPROC(__arm_smccc_hvc)
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