kexec.h (1689B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Copyright (C) 2019 FORTH-ICS/CARV 4 * Nick Kossifidis <mick@ics.forth.gr> 5 */ 6 7#ifndef _RISCV_KEXEC_H 8#define _RISCV_KEXEC_H 9 10#include <asm/page.h> /* For PAGE_SIZE */ 11 12/* Maximum physical address we can use pages from */ 13#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) 14 15/* Maximum address we can reach in physical address mode */ 16#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) 17 18/* Maximum address we can use for the control code buffer */ 19#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL) 20 21/* Reserve a page for the control code buffer */ 22#define KEXEC_CONTROL_PAGE_SIZE PAGE_SIZE 23 24#define KEXEC_ARCH KEXEC_ARCH_RISCV 25 26extern void riscv_crash_save_regs(struct pt_regs *newregs); 27 28static inline void 29crash_setup_regs(struct pt_regs *newregs, 30 struct pt_regs *oldregs) 31{ 32 if (oldregs) 33 memcpy(newregs, oldregs, sizeof(struct pt_regs)); 34 else 35 riscv_crash_save_regs(newregs); 36} 37 38 39#define ARCH_HAS_KIMAGE_ARCH 40 41struct kimage_arch { 42 unsigned long fdt_addr; 43}; 44 45extern const unsigned char riscv_kexec_relocate[]; 46extern const unsigned int riscv_kexec_relocate_size; 47 48typedef void (*riscv_kexec_method)(unsigned long first_ind_entry, 49 unsigned long jump_addr, 50 unsigned long fdt_addr, 51 unsigned long hartid, 52 unsigned long va_pa_off); 53 54extern riscv_kexec_method riscv_kexec_norelocate; 55 56#ifdef CONFIG_KEXEC_FILE 57extern const struct kexec_file_ops elf_kexec_ops; 58 59struct purgatory_info; 60int arch_kexec_apply_relocations_add(struct purgatory_info *pi, 61 Elf_Shdr *section, 62 const Elf_Shdr *relsec, 63 const Elf_Shdr *symtab); 64#define arch_kexec_apply_relocations_add arch_kexec_apply_relocations_add 65#endif 66 67#endif