1// SPDX-License-Identifier: GPL-2.0
2/*
3 * swsusp.c - SuperH hibernation support
4 *
5 * Copyright (C) 2009 Magnus Damm
6 */
7
8#include <linux/mm.h>
9#include <linux/sched.h>
10#include <linux/suspend.h>
11#include <asm/suspend.h>
12#include <asm/sections.h>
13#include <asm/tlbflush.h>
14#include <asm/page.h>
15#include <asm/fpu.h>
16
17struct swsusp_arch_regs swsusp_arch_regs_cpu0;
18
19int pfn_is_nosave(unsigned long pfn)
20{
21	unsigned long begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
22	unsigned long end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
23
24	return (pfn >= begin_pfn) && (pfn < end_pfn);
25}
26
27void save_processor_state(void)
28{
29	init_fpu(current);
30}
31
32void restore_processor_state(void)
33{
34	local_flush_tlb_all();
35}
36