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review.trustedfirmware.org / hafnium / third_party / linux.git / 0f672f6c0b52b7b0700b0915c72b540721af4465 / . / arch / mips / include / asm / kexec.h
blob: d6d5fa5cc31dd7f20f9a729690d4ef40af4c545f [file] [log] [blame]
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]1/* SPDX-License-Identifier: GPL-2.0-only */
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]2/*
3 * kexec.h for kexec
4 * Created by <nschichan@corp.free.fr> on Thu Oct 12 14:59:34 2006
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]5 */
6
7#ifndef _MIPS_KEXEC
8# define _MIPS_KEXEC
9
10#include <asm/stacktrace.h>
11
12/* Maximum physical address we can use pages from */
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]13#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]14/* Maximum address we can reach in physical address mode */
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]15#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]16 /* Maximum address we can use for the control code buffer */
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]17#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]18/* Reserve 3*4096 bytes for board-specific info */
19#define KEXEC_CONTROL_PAGE_SIZE (4096 + 3*4096)
20
21/* The native architecture */
22#define KEXEC_ARCH KEXEC_ARCH_MIPS
23#define MAX_NOTE_BYTES 1024
24
25static inline void crash_setup_regs(struct pt_regs *newregs,
26 struct pt_regs *oldregs)
27{
28 if (oldregs)
29 memcpy(newregs, oldregs, sizeof(*newregs));
30 else
31 prepare_frametrace(newregs);
32}
33
34#ifdef CONFIG_KEXEC
35struct kimage;
36extern unsigned long kexec_args[4];
37extern int (*_machine_kexec_prepare)(struct kimage *);
38extern void (*_machine_kexec_shutdown)(void);
39extern void (*_machine_crash_shutdown)(struct pt_regs *regs);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]40void default_machine_crash_shutdown(struct pt_regs *regs);
41void kexec_nonboot_cpu_jump(void);
42void kexec_reboot(void);
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]43#ifdef CONFIG_SMP
44extern const unsigned char kexec_smp_wait[];
45extern unsigned long secondary_kexec_args[4];
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]46extern atomic_t kexec_ready_to_reboot;
47extern void (*_crash_smp_send_stop)(void);
48#endif
49#endif
50
51#endif /* !_MIPS_KEXEC */