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fba8a8674f
This patch adds support for kexec on RISC-V. On SMP systems it depends on HOTPLUG_CPU in order to be able to bring up all harts after kexec. It also needs a recent OpenSBI version that supports the HSM extension. I tested it on riscv64 QEMU on both an smp and a non-smp system. Signed-off-by: Nick Kossifidis <mick@ics.forth.gr> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2019 FORTH-ICS/CARV
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* Nick Kossifidis <mick@ics.forth.gr>
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*/
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#ifndef _RISCV_KEXEC_H
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#define _RISCV_KEXEC_H
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#include <asm/page.h> /* For PAGE_SIZE */
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/* Maximum physical address we can use pages from */
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#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
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/* Maximum address we can reach in physical address mode */
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#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
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/* Maximum address we can use for the control code buffer */
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#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
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/* Reserve a page for the control code buffer */
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#define KEXEC_CONTROL_PAGE_SIZE PAGE_SIZE
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#define KEXEC_ARCH KEXEC_ARCH_RISCV
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static inline void
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crash_setup_regs(struct pt_regs *newregs,
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struct pt_regs *oldregs)
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{
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/* Dummy implementation for now */
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}
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#define ARCH_HAS_KIMAGE_ARCH
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struct kimage_arch {
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unsigned long fdt_addr;
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};
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const extern unsigned char riscv_kexec_relocate[];
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const extern unsigned int riscv_kexec_relocate_size;
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typedef void (*riscv_kexec_do_relocate)(unsigned long first_ind_entry,
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unsigned long jump_addr,
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unsigned long fdt_addr,
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unsigned long hartid,
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unsigned long va_pa_off);
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#endif
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