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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2019 FORTH-ICS/CARV
* Nick Kossifidis <mick@ics.forth.gr>
*/
#ifndef _RISCV_KEXEC_H
#define _RISCV_KEXEC_H
#include <asm/page.h> /* For PAGE_SIZE */
/* 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
#define KEXEC_ARCH KEXEC_ARCH_RISCV
extern void riscv_crash_save_regs(struct pt_regs *newregs);
static inline void
crash_setup_regs(struct pt_regs *newregs,
struct pt_regs *oldregs)
{
if (oldregs)
memcpy(newregs, oldregs, sizeof(struct pt_regs));
else
riscv_crash_save_regs(newregs);
}
#define ARCH_HAS_KIMAGE_ARCH
struct kimage_arch {
void *fdt; /* For CONFIG_KEXEC_FILE */
unsigned long fdt_addr;
};
extern const unsigned char riscv_kexec_relocate[];
extern const unsigned int riscv_kexec_relocate_size;
typedef void (*riscv_kexec_method)(unsigned long first_ind_entry,
unsigned long jump_addr,
unsigned long fdt_addr,
unsigned long hartid,
unsigned long va_pa_off);
extern riscv_kexec_method riscv_kexec_norelocate;
#ifdef CONFIG_KEXEC_FILE
extern const struct kexec_file_ops elf_kexec_ops;
struct purgatory_info;
int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
Elf_Shdr *section,
const Elf_Shdr *relsec,
const Elf_Shdr *symtab);
#define arch_kexec_apply_relocations_add arch_kexec_apply_relocations_add
struct kimage;
int arch_kimage_file_post_load_cleanup(struct kimage *image);
#define arch_kimage_file_post_load_cleanup arch_kimage_file_post_load_cleanup
#endif
#endif