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
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 /
38 PTR_L t2, t0, PBE_ORIG_ADDRE
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)
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