2005-06-26 04:57:52 +07:00
|
|
|
#ifndef LINUX_KEXEC_H
|
|
|
|
#define LINUX_KEXEC_H
|
|
|
|
|
|
|
|
#ifdef CONFIG_KEXEC
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/list.h>
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
#include <linux/compat.h>
|
|
|
|
#include <asm/kexec.h>
|
|
|
|
|
|
|
|
/* Verify architecture specific macros are defined */
|
|
|
|
|
|
|
|
#ifndef KEXEC_SOURCE_MEMORY_LIMIT
|
|
|
|
#error KEXEC_SOURCE_MEMORY_LIMIT not defined
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef KEXEC_DESTINATION_MEMORY_LIMIT
|
|
|
|
#error KEXEC_DESTINATION_MEMORY_LIMIT not defined
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef KEXEC_CONTROL_MEMORY_LIMIT
|
|
|
|
#error KEXEC_CONTROL_MEMORY_LIMIT not defined
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef KEXEC_CONTROL_CODE_SIZE
|
|
|
|
#error KEXEC_CONTROL_CODE_SIZE not defined
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifndef KEXEC_ARCH
|
|
|
|
#error KEXEC_ARCH not defined
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This structure is used to hold the arguments that are used when loading
|
|
|
|
* kernel binaries.
|
|
|
|
*/
|
|
|
|
|
|
|
|
typedef unsigned long kimage_entry_t;
|
|
|
|
#define IND_DESTINATION 0x1
|
|
|
|
#define IND_INDIRECTION 0x2
|
|
|
|
#define IND_DONE 0x4
|
|
|
|
#define IND_SOURCE 0x8
|
|
|
|
|
2006-01-10 11:51:51 +07:00
|
|
|
#define KEXEC_SEGMENT_MAX 16
|
2005-06-26 04:57:52 +07:00
|
|
|
struct kexec_segment {
|
|
|
|
void __user *buf;
|
|
|
|
size_t bufsz;
|
|
|
|
unsigned long mem; /* User space sees this as a (void *) ... */
|
|
|
|
size_t memsz;
|
|
|
|
};
|
|
|
|
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
struct compat_kexec_segment {
|
|
|
|
compat_uptr_t buf;
|
|
|
|
compat_size_t bufsz;
|
|
|
|
compat_ulong_t mem; /* User space sees this as a (void *) ... */
|
|
|
|
compat_size_t memsz;
|
|
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
|
|
struct kimage {
|
|
|
|
kimage_entry_t head;
|
|
|
|
kimage_entry_t *entry;
|
|
|
|
kimage_entry_t *last_entry;
|
|
|
|
|
|
|
|
unsigned long destination;
|
|
|
|
|
|
|
|
unsigned long start;
|
|
|
|
struct page *control_code_page;
|
|
|
|
|
|
|
|
unsigned long nr_segments;
|
|
|
|
struct kexec_segment segment[KEXEC_SEGMENT_MAX];
|
|
|
|
|
|
|
|
struct list_head control_pages;
|
|
|
|
struct list_head dest_pages;
|
|
|
|
struct list_head unuseable_pages;
|
|
|
|
|
|
|
|
/* Address of next control page to allocate for crash kernels. */
|
|
|
|
unsigned long control_page;
|
|
|
|
|
|
|
|
/* Flags to indicate special processing */
|
|
|
|
unsigned int type : 1;
|
|
|
|
#define KEXEC_TYPE_DEFAULT 0
|
|
|
|
#define KEXEC_TYPE_CRASH 1
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* kexec interface functions */
|
|
|
|
extern NORET_TYPE void machine_kexec(struct kimage *image) ATTRIB_NORET;
|
|
|
|
extern int machine_kexec_prepare(struct kimage *image);
|
|
|
|
extern void machine_kexec_cleanup(struct kimage *image);
|
|
|
|
extern asmlinkage long sys_kexec_load(unsigned long entry,
|
2005-06-26 04:58:28 +07:00
|
|
|
unsigned long nr_segments,
|
|
|
|
struct kexec_segment __user *segments,
|
|
|
|
unsigned long flags);
|
2005-06-26 04:57:52 +07:00
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
extern asmlinkage long compat_sys_kexec_load(unsigned long entry,
|
2005-06-26 04:58:28 +07:00
|
|
|
unsigned long nr_segments,
|
|
|
|
struct compat_kexec_segment __user *segments,
|
|
|
|
unsigned long flags);
|
2005-06-26 04:57:52 +07:00
|
|
|
#endif
|
2005-06-26 04:58:28 +07:00
|
|
|
extern struct page *kimage_alloc_control_pages(struct kimage *image,
|
|
|
|
unsigned int order);
|
2005-06-26 04:58:26 +07:00
|
|
|
extern void crash_kexec(struct pt_regs *);
|
|
|
|
int kexec_should_crash(struct task_struct *);
|
2005-06-26 04:57:52 +07:00
|
|
|
extern struct kimage *kexec_image;
|
|
|
|
|
|
|
|
#define KEXEC_ON_CRASH 0x00000001
|
|
|
|
#define KEXEC_ARCH_MASK 0xffff0000
|
|
|
|
|
|
|
|
/* 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_X86_64 (62 << 16)
|
|
|
|
#define KEXEC_ARCH_PPC (20 << 16)
|
|
|
|
#define KEXEC_ARCH_PPC64 (21 << 16)
|
|
|
|
#define KEXEC_ARCH_IA_64 (50 << 16)
|
2005-06-26 04:58:11 +07:00
|
|
|
#define KEXEC_ARCH_S390 (22 << 16)
|
2006-01-17 13:14:10 +07:00
|
|
|
#define KEXEC_ARCH_SH (42 << 16)
|
2005-06-26 04:57:52 +07:00
|
|
|
|
|
|
|
#define KEXEC_FLAGS (KEXEC_ON_CRASH) /* List of defined/legal kexec flags */
|
|
|
|
|
|
|
|
/* Location of a reserved region to hold the crash kernel.
|
|
|
|
*/
|
|
|
|
extern struct resource crashk_res;
|
2006-01-10 11:51:41 +07:00
|
|
|
typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
|
|
|
|
extern note_buf_t *crash_notes;
|
2005-06-26 04:57:52 +07:00
|
|
|
|
|
|
|
#else /* !CONFIG_KEXEC */
|
2005-06-26 04:58:26 +07:00
|
|
|
struct pt_regs;
|
|
|
|
struct task_struct;
|
|
|
|
static inline void crash_kexec(struct pt_regs *regs) { }
|
|
|
|
static inline int kexec_should_crash(struct task_struct *p) { return 0; }
|
2005-06-26 04:57:52 +07:00
|
|
|
#endif /* CONFIG_KEXEC */
|
|
|
|
#endif /* LINUX_KEXEC_H */
|