projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |