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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
4857d4bb MH |
2 | /* |
3 | * OS info memory interface | |
4 | * | |
5 | * Copyright IBM Corp. 2012 | |
6 | * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com> | |
7 | */ | |
8 | #ifndef _ASM_S390_OS_INFO_H | |
9 | #define _ASM_S390_OS_INFO_H | |
10 | ||
11 | #define OS_INFO_VERSION_MAJOR 1 | |
12 | #define OS_INFO_VERSION_MINOR 1 | |
13 | #define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */ | |
14 | ||
15 | #define OS_INFO_VMCOREINFO 0 | |
16 | #define OS_INFO_REIPL_BLOCK 1 | |
4857d4bb MH |
17 | |
18 | struct os_info_entry { | |
19 | u64 addr; | |
20 | u64 size; | |
21 | u32 csum; | |
22 | } __packed; | |
23 | ||
24 | struct os_info { | |
25 | u64 magic; | |
26 | u32 csum; | |
27 | u16 version_major; | |
28 | u16 version_minor; | |
29 | u64 crashkernel_addr; | |
30 | u64 crashkernel_size; | |
d7b7cdea MH |
31 | struct os_info_entry entry[2]; |
32 | u8 reserved[4024]; | |
4857d4bb MH |
33 | } __packed; |
34 | ||
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); | |
39 | ||
40 | #ifdef CONFIG_CRASH_DUMP | |
41 | void *os_info_old_entry(int nr, unsigned long *size); | |
df9694c7 | 42 | int copy_oldmem_kernel(void *dst, void *src, size_t count); |
4857d4bb MH |
43 | #else |
44 | static inline void *os_info_old_entry(int nr, unsigned long *size) | |
45 | { | |
46 | return NULL; | |
47 | } | |
48 | #endif | |
49 | ||
50 | #endif /* _ASM_S390_OS_INFO_H */ |