1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Hibernation support specific for loongarch - temporary page tables 4 * 5 * Licensed under the GPLv2 6 * 7 * Copyright (C) 2009 Lemote Inc. 8 * Author: Hu Hongbing <huhb@lemote.com> 9 * Wu Zhangjin <wuzhangjin@gmail.com> 10 * Copyright (C) 2020 Loongson Technology Co., Ltd. 11 */ 12#include <linux/linkage.h> 13#include <asm/asm-offsets.h> 14#include <asm/regdef.h> 15#include <asm/asm.h> 16 17.text 18SYM_FUNC_START(swsusp_asm_suspend) 19 la.pcrel t0, saved_regs 20 PTR_S ra, t0, PT_R1 21 PTR_S tp, t0, PT_R2 22 PTR_S sp, t0, PT_R3 23 PTR_S u0, t0, PT_R21 24 PTR_S fp, t0, PT_R22 25 PTR_S s0, t0, PT_R23 26 PTR_S s1, t0, PT_R24 27 PTR_S s2, t0, PT_R25 28 PTR_S s3, t0, PT_R26 29 PTR_S s4, t0, PT_R27 30 PTR_S s5, t0, PT_R28 31 PTR_S s6, t0, PT_R29 32 PTR_S s7, t0, PT_R30 33 PTR_S s8, t0, PT_R31 34 b swsusp_save 35SYM_FUNC_END(swsusp_asm_suspend) 36 37SYM_FUNC_START(swsusp_asm_resume) 38 la.pcrel t0, restore_pblist 39 PTR_L t0, t0, 0 400: 41 PTR_L t1, t0, PBE_ADDRESS /* source */ 42 PTR_L t2, t0, PBE_ORIG_ADDRESS /* destination */ 43 PTR_LI t3, _PAGE_SIZE 44 PTR_ADD t3, t3, t1 451: 46 REG_L t8, t1, 0 47 REG_S t8, t2, 0 48 PTR_ADDI t1, t1, SZREG 49 PTR_ADDI t2, t2, SZREG 50 bne t1, t3, 1b 51 PTR_L t0, t0, PBE_NEXT 52 bnez t0, 0b 53 la.pcrel t0, saved_regs 54 PTR_L ra, t0, PT_R1 55 PTR_L tp, t0, PT_R2 56 PTR_L sp, t0, PT_R3 57 PTR_L u0, t0, PT_R21 58 PTR_L fp, t0, PT_R22 59 PTR_L s0, t0, PT_R23 60 PTR_L s1, t0, PT_R24 61 PTR_L s2, t0, PT_R25 62 PTR_L s3, t0, PT_R26 63 PTR_L s4, t0, PT_R27 64 PTR_L s5, t0, PT_R28 65 PTR_L s6, t0, PT_R29 66 PTR_L s7, t0, PT_R30 67 PTR_L s8, t0, PT_R31 68 PTR_LI a0, 0x0 69 jirl zero, ra, 0 70SYM_FUNC_END(swsusp_asm_resume) 71