mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 04:55:18 +07:00
d28f6df130
Add three new files, kexec.h, machine_kexec.c and relocate_kernel.S to the arm64 architecture that add support for the kexec re-boot mechanism (CONFIG_KEXEC) on arm64 platforms. Signed-off-by: Geoff Levand <geoff@infradead.org> Reviewed-by: James Morse <james.morse@arm.com> [catalin.marinas@arm.com: removed dead code following James Morse's comments] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
#ifndef _UAPILINUX_KEXEC_H
|
|
#define _UAPILINUX_KEXEC_H
|
|
|
|
/* kexec system call - It loads the new kernel to boot into.
|
|
* kexec does not sync, or unmount filesystems so if you need
|
|
* that to happen you need to do that yourself.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
|
|
/* kexec flags for different usage scenarios */
|
|
#define KEXEC_ON_CRASH 0x00000001
|
|
#define KEXEC_PRESERVE_CONTEXT 0x00000002
|
|
#define KEXEC_ARCH_MASK 0xffff0000
|
|
|
|
/*
|
|
* Kexec file load interface flags.
|
|
* KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image.
|
|
* KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image.
|
|
* KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd
|
|
* fd field.
|
|
*/
|
|
#define KEXEC_FILE_UNLOAD 0x00000001
|
|
#define KEXEC_FILE_ON_CRASH 0x00000002
|
|
#define KEXEC_FILE_NO_INITRAMFS 0x00000004
|
|
|
|
/* These values match the ELF architecture values.
|
|
* Unless there is a good reason that should continue to be the case.
|
|
*/
|
|
#define KEXEC_ARCH_DEFAULT ( 0 << 16)
|
|
#define KEXEC_ARCH_386 ( 3 << 16)
|
|
#define KEXEC_ARCH_68K ( 4 << 16)
|
|
#define KEXEC_ARCH_X86_64 (62 << 16)
|
|
#define KEXEC_ARCH_PPC (20 << 16)
|
|
#define KEXEC_ARCH_PPC64 (21 << 16)
|
|
#define KEXEC_ARCH_IA_64 (50 << 16)
|
|
#define KEXEC_ARCH_ARM (40 << 16)
|
|
#define KEXEC_ARCH_S390 (22 << 16)
|
|
#define KEXEC_ARCH_SH (42 << 16)
|
|
#define KEXEC_ARCH_MIPS_LE (10 << 16)
|
|
#define KEXEC_ARCH_MIPS ( 8 << 16)
|
|
#define KEXEC_ARCH_AARCH64 (183 << 16)
|
|
|
|
/* The artificial cap on the number of segments passed to kexec_load. */
|
|
#define KEXEC_SEGMENT_MAX 16
|
|
|
|
#ifndef __KERNEL__
|
|
/*
|
|
* This structure is used to hold the arguments that are used when
|
|
* loading kernel binaries.
|
|
*/
|
|
struct kexec_segment {
|
|
const void *buf;
|
|
size_t bufsz;
|
|
const void *mem;
|
|
size_t memsz;
|
|
};
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _UAPILINUX_KEXEC_H */
|