[mirror_ubuntu-bionic-kernel.git] / arch / s390 / include / asm / os_info.h

/*
 * OS info memory interface
 *
 * Copyright IBM Corp. 2012
 * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
 */
#ifndef _ASM_S390_OS_INFO_H
#define _ASM_S390_OS_INFO_H

#define OS_INFO_VERSION_MAJOR	1
#define OS_INFO_VERSION_MINOR	1
#define OS_INFO_MAGIC		0x4f53494e464f535aULL /* OSINFOSZ */

#define OS_INFO_VMCOREINFO	0
#define OS_INFO_REIPL_BLOCK	1

struct os_info_entry {
	u64	addr;
	u64	size;
	u32	csum;
} __packed;

struct os_info {
	u64	magic;
	u32	csum;
	u16	version_major;
	u16	version_minor;
	u64	crashkernel_addr;
	u64	crashkernel_size;
	struct os_info_entry entry[2];
	u8	reserved[4024];
} __packed;

void os_info_init(void);
void os_info_entry_add(int nr, void *ptr, u64 len);
void os_info_crashkernel_add(unsigned long base, unsigned long size);
u32 os_info_csum(struct os_info *os_info);

#ifdef CONFIG_CRASH_DUMP
void *os_info_old_entry(int nr, unsigned long *size);
int copy_from_oldmem(void *dest, void *src, size_t count);
#else
static inline void *os_info_old_entry(int nr, unsigned long *size)
{
	return NULL;
}
#endif

#endif /* _ASM_S390_OS_INFO_H */
Commit	Line	Data
4857d4bb MH	1	/*
	2	* OS info memory interface
	3	*
	4	* Copyright IBM Corp. 2012
	5	* Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
	6	*/
	7	#ifndef _ASM_S390_OS_INFO_H
	8	#define _ASM_S390_OS_INFO_H
	9
	10	#define OS_INFO_VERSION_MAJOR 1
	11	#define OS_INFO_VERSION_MINOR 1
	12	#define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */
	13
	14	#define OS_INFO_VMCOREINFO 0
	15	#define OS_INFO_REIPL_BLOCK 1
4857d4bb MH	16
	17	struct os_info_entry {
	18	u64 addr;
	19	u64 size;
	20	u32 csum;
	21	} __packed;
	22
	23	struct os_info {
	24	u64 magic;
	25	u32 csum;
	26	u16 version_major;
	27	u16 version_minor;
	28	u64 crashkernel_addr;
	29	u64 crashkernel_size;
d7b7cdea MH	30	struct os_info_entry entry[2];
d7b7cdea MH	31	u8 reserved[4024];
4857d4bb MH	32	} __packed;
	33
	34	void os_info_init(void);
	35	void os_info_entry_add(int nr, void *ptr, u64 len);
	36	void os_info_crashkernel_add(unsigned long base, unsigned long size);
	37	u32 os_info_csum(struct os_info *os_info);
	38
	39	#ifdef CONFIG_CRASH_DUMP
	40	void os_info_old_entry(int nr, unsigned long size);
	41	int copy_from_oldmem(void dest, void src, size_t count);
	42	#else
	43	static inline void os_info_old_entry(int nr, unsigned long size)
	44	{
	45	return NULL;
	46	}
	47	#endif
	48
	49	#endif /* _ASM_S390_OS_INFO_H */