| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|
| 2 | /* |
|---|
| 3 | * Hibernation support specific for LoongArch |
|---|
| 4 | * |
|---|
| 5 | * Author: Huacai Chen <chenhuacai@loongson.cn> |
|---|
| 6 | * Copyright (C) 2020-2022 Loongson Technology Corporation Limited |
|---|
| 7 | */ |
|---|
| 8 | #include <linux/linkage.h> |
|---|
| 9 | #include <asm/asm.h> |
|---|
| 10 | #include <asm/asm-offsets.h> |
|---|
| 11 | #include <asm/regdef.h> |
|---|
| 12 | |
|---|
| 13 | .text |
|---|
| 14 | SYM_FUNC_START(swsusp_asm_suspend) |
|---|
| 15 | la.pcrel t0, saved_regs |
|---|
| 16 | PTR_S ra, t0, PT_R1 |
|---|
| 17 | PTR_S tp, t0, PT_R2 |
|---|
| 18 | PTR_S sp, t0, PT_R3 |
|---|
| 19 | PTR_S u0, t0, PT_R21 |
|---|
| 20 | PTR_S fp, t0, PT_R22 |
|---|
| 21 | PTR_S s0, t0, PT_R23 |
|---|
| 22 | PTR_S s1, t0, PT_R24 |
|---|
| 23 | PTR_S s2, t0, PT_R25 |
|---|
| 24 | PTR_S s3, t0, PT_R26 |
|---|
| 25 | PTR_S s4, t0, PT_R27 |
|---|
| 26 | PTR_S s5, t0, PT_R28 |
|---|
| 27 | PTR_S s6, t0, PT_R29 |
|---|
| 28 | PTR_S s7, t0, PT_R30 |
|---|
| 29 | PTR_S s8, t0, PT_R31 |
|---|
| 30 | b swsusp_save |
|---|
| 31 | SYM_FUNC_END(swsusp_asm_suspend) |
|---|
| 32 | |
|---|
| 33 | SYM_FUNC_START(swsusp_asm_resume) |
|---|
| 34 | la.pcrel t0, restore_pblist |
|---|
| 35 | PTR_L t0, t0, 0 |
|---|
| 36 | 0: |
|---|
| 37 | PTR_L t1, t0, PBE_ADDRESS /* source */ |
|---|
| 38 | PTR_L t2, t0, PBE_ORIG_ADDRESS /* destination */ |
|---|
| 39 | PTR_LI t3, _PAGE_SIZE |
|---|
| 40 | PTR_ADD t3, t3, t1 |
|---|
| 41 | 1: |
|---|
| 42 | REG_L t8, t1, 0 |
|---|
| 43 | REG_S t8, t2, 0 |
|---|
| 44 | PTR_ADDI t1, t1, SZREG |
|---|
| 45 | PTR_ADDI t2, t2, SZREG |
|---|
| 46 | bne t1, t3, 1b |
|---|
| 47 | PTR_L t0, t0, PBE_NEXT |
|---|
| 48 | bnez t0, 0b |
|---|
| 49 | la.pcrel t0, saved_regs |
|---|
| 50 | PTR_L ra, t0, PT_R1 |
|---|
| 51 | PTR_L tp, t0, PT_R2 |
|---|
| 52 | PTR_L sp, t0, PT_R3 |
|---|
| 53 | PTR_L u0, t0, PT_R21 |
|---|
| 54 | PTR_L fp, t0, PT_R22 |
|---|
| 55 | PTR_L s0, t0, PT_R23 |
|---|
| 56 | PTR_L s1, t0, PT_R24 |
|---|
| 57 | PTR_L s2, t0, PT_R25 |
|---|
| 58 | PTR_L s3, t0, PT_R26 |
|---|
| 59 | PTR_L s4, t0, PT_R27 |
|---|
| 60 | PTR_L s5, t0, PT_R28 |
|---|
| 61 | PTR_L s6, t0, PT_R29 |
|---|
| 62 | PTR_L s7, t0, PT_R30 |
|---|
| 63 | PTR_L s8, t0, PT_R31 |
|---|
| 64 | PTR_LI a0, 0x0 |
|---|
| 65 | jirl zero, ra, 0 |
|---|
| 66 | SYM_FUNC_END(swsusp_asm_resume) |
|---|
| 67 | |
|---|
