/* 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 { 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; #endif