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/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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
#include <linux/uio.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
#define OS_INFO_FLAGS_ENTRY 2
#define OS_INFO_RESERVED 3
#define OS_INFO_IDENTITY_BASE 4
#define OS_INFO_KASLR_OFFSET 5
#define OS_INFO_KASLR_OFF_PHYS 6
#define OS_INFO_VMEMMAP 7
#define OS_INFO_AMODE31_START 8
#define OS_INFO_AMODE31_END 9
#define OS_INFO_IMAGE_START 10
#define OS_INFO_IMAGE_END 11
#define OS_INFO_IMAGE_PHYS 12
#define OS_INFO_MAX 13
#define OS_INFO_FLAG_REIPL_CLEAR (1UL << 0)
struct os_info_entry {
union {
u64 addr;
u64 val;
};
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[OS_INFO_MAX];
u8 reserved[3804];
} __packed;
void os_info_init(void);
void os_info_entry_add_data(int nr, void *ptr, u64 len);
void os_info_entry_add_val(int nr, u64 val);
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);
static inline unsigned long os_info_old_value(int nr)
{
unsigned long size;
return (unsigned long)os_info_old_entry(nr, &size);
}
#else
static inline void *os_info_old_entry(int nr, unsigned long *size)
{
return NULL;
}
#endif
#endif /* _ASM_S390_OS_INFO_H */
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