| Masahiro Yamada | a93297e | 2017-04-14 11:10:22 +0900 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015, Linaro Limited |
| 3 | * |
| 4 | * This software is licensed under the terms of the GNU General Public |
| 5 | * License version 2, as published by the Free Software Foundation, and |
| 6 | * may be copied, distributed, and modified under those terms. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | */ |
| 14 | #include <linux/linkage.h> |
| 15 | |
| 16 | #include <asm/opcodes-sec.h> |
| 17 | #include <asm/opcodes-virt.h> |
| 18 | #include <asm/unwind.h> |
| 19 | |
| 20 | /* |
| 21 | * Wrap c macros in asm macros to delay expansion until after the |
| 22 | * SMCCC asm macro is expanded. |
| 23 | */ |
| 24 | .macro SMCCC_SMC |
| 25 | __SMC(0) |
| 26 | .endm |
| 27 | |
| 28 | .macro SMCCC_HVC |
| 29 | __HVC(0) |
| 30 | .endm |
| 31 | |
| 32 | .macro SMCCC instr |
| 33 | UNWIND( .fnstart) |
| 34 | mov r12, sp |
| 35 | push {r4-r7} |
| 36 | UNWIND( .save {r4-r7}) |
| 37 | ldm r12, {r4-r7} |
| 38 | \instr |
| 39 | pop {r4-r7} |
| 40 | ldr r12, [sp, #(4 * 4)] |
| 41 | stm r12, {r0-r3} |
| 42 | bx lr |
| 43 | UNWIND( .fnend) |
| 44 | .endm |
| 45 | |
| 46 | /* |
| 47 | * void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2, |
| 48 | * unsigned long a3, unsigned long a4, unsigned long a5, |
| 49 | * unsigned long a6, unsigned long a7, struct arm_smccc_res *res, |
| 50 | * struct arm_smccc_quirk *quirk) |
| 51 | */ |
| 52 | ENTRY(__arm_smccc_smc) |
| 53 | SMCCC SMCCC_SMC |
| 54 | ENDPROC(__arm_smccc_smc) |
| 55 | |
| 56 | /* |
| 57 | * void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2, |
| 58 | * unsigned long a3, unsigned long a4, unsigned long a5, |
| 59 | * unsigned long a6, unsigned long a7, struct arm_smccc_res *res, |
| 60 | * struct arm_smccc_quirk *quirk) |
| 61 | */ |
| 62 | ENTRY(__arm_smccc_hvc) |
| 63 | SMCCC SMCCC_HVC |
| 64 | ENDPROC(__arm_smccc_hvc) |