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