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/* SPDX-License-Identifier: GPL-2.0 */
/*
* kexec.h for kexec
*
* Copyright (C) 2022 Loongson Technology Corporation Limited
*/
#ifndef _ASM_KEXEC_H
#define _ASM_KEXEC_H
#include <asm/stacktrace.h>
#include <asm/page.h>
/* Maximum physical address we can use pages from */
#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
/* Maximum address we can reach in physical address mode */
#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
/* Maximum address we can use for the control code buffer */
#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
/* Reserve a page for the control code buffer */
#define KEXEC_CONTROL_PAGE_SIZE PAGE_SIZE
/* The native architecture */
#define KEXEC_ARCH KEXEC_ARCH_LOONGARCH
static inline void crash_setup_regs(struct pt_regs *newregs,
struct pt_regs *oldregs)
{
if (oldregs)
memcpy(newregs, oldregs, sizeof(*newregs));
else
prepare_frametrace(newregs);
}
#define ARCH_HAS_KIMAGE_ARCH
struct kimage_arch {
unsigned long efi_boot;
unsigned long cmdline_ptr;
unsigned long systable_ptr;
};
typedef void (*do_kexec_t)(unsigned long efi_boot,
unsigned long cmdline_ptr,
unsigned long systable_ptr,
unsigned long start_addr,
unsigned long first_ind_entry);
struct kimage;
extern const unsigned char relocate_new_kernel[];
extern const size_t relocate_new_kernel_size;
extern void kexec_reboot(void);
#ifdef CONFIG_SMP
extern atomic_t kexec_ready_to_reboot;
extern const unsigned char kexec_smp_wait[];
#endif
#endif /* !_ASM_KEXEC_H */