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author | Sascha Hauer <s.hauer@pengutronix.de> | 2017-02-13 09:26:04 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-02-13 09:26:04 +0100 |
commit | 30139163b75970fcd58df6b6b987883e36571046 (patch) | |
tree | 00bd354cefa617f8474cc73994b1a72c11e770a0 /arch/arm/cpu/smccc-call.S | |
parent | bb1a6a2fd3cc41be6db1a1362f311456019317b1 (diff) | |
parent | 19df384cec181be4407f82377ffbb3059b1ed748 (diff) | |
download | barebox-30139163b75970fcd58df6b6b987883e36571046.tar.gz barebox-30139163b75970fcd58df6b6b987883e36571046.tar.xz |
Merge branch 'for-next/imx'
Diffstat (limited to 'arch/arm/cpu/smccc-call.S')
-rw-r--r-- | arch/arm/cpu/smccc-call.S | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/cpu/smccc-call.S b/arch/arm/cpu/smccc-call.S new file mode 100644 index 0000000000..c2781b1ab2 --- /dev/null +++ b/arch/arm/cpu/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 <linux/linkage.h> + +#include <asm/unwind.h> + + .arch_extension sec + .arch_extension virt + .arm + + /* + * 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) + */ +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) + */ +ENTRY(arm_smccc_hvc) + SMCCC SMCCC_HVC +ENDPROC(arm_smccc_hvc) |