1 /* SPDX-License-Identifier: GPL-2.0 */
3 * OS info memory interface
5 * Copyright IBM Corp. 2012
6 * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
8 #ifndef _ASM_S390_OS_INFO_H
9 #define _ASM_S390_OS_INFO_H
11 #define OS_INFO_VERSION_MAJOR 1
12 #define OS_INFO_VERSION_MINOR 1
13 #define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */
15 #define OS_INFO_VMCOREINFO 0
16 #define OS_INFO_REIPL_BLOCK 1
18 struct os_info_entry {
31 struct os_info_entry entry[2];
35 void os_info_init(void);
36 void os_info_entry_add(int nr, void *ptr, u64 len);
37 void os_info_crashkernel_add(unsigned long base, unsigned long size);
38 u32 os_info_csum(struct os_info *os_info);
40 #ifdef CONFIG_CRASH_DUMP
41 void *os_info_old_entry(int nr, unsigned long *size);
42 int copy_oldmem_kernel(void *dst, void *src, size_t count);
44 static inline void *os_info_old_entry(int nr, unsigned long *size)
50 #endif /* _ASM_S390_OS_INFO_H */