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7db54bfe HC |
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) |