From c2da86f39ed6cbccccc2736bdc421fd606734232 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 14 Apr 2017 11:10:22 +0900 Subject: ARM: import arm-smccc code from Linux 4.11-rc6 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 --- arch/arm/cpu/armv7/smccc-call.S | 64 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 arch/arm/cpu/armv7/smccc-call.S (limited to 'arch/arm/cpu/armv7') diff --git a/arch/arm/cpu/armv7/smccc-call.S b/arch/arm/cpu/armv7/smccc-call.S new file mode 100644 index 0000000000..e5d43066b8 --- /dev/null +++ b/arch/arm/cpu/armv7/smccc-call.S @@ -0,0 +1,64 @@ +/* + * 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 + +#include +#include +#include + + /* + * 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 + 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) -- cgit v1.2.3