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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 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 | #include <linux/uio.h> |
| 12 | |
| 13 | #define OS_INFO_VERSION_MAJOR 1 |
| 14 | #define OS_INFO_VERSION_MINOR 1 |
| 15 | #define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */ |
| 16 | |
| 17 | #define OS_INFO_VMCOREINFO 0 |
| 18 | #define OS_INFO_REIPL_BLOCK 1 |
| 19 | #define OS_INFO_FLAGS_ENTRY 2 |
| 20 | #define OS_INFO_RESERVED 3 |
| 21 | #define OS_INFO_IDENTITY_BASE 4 |
| 22 | #define OS_INFO_KASLR_OFFSET 5 |
| 23 | #define OS_INFO_KASLR_OFF_PHYS 6 |
| 24 | #define OS_INFO_VMEMMAP 7 |
| 25 | #define OS_INFO_AMODE31_START 8 |
| 26 | #define OS_INFO_AMODE31_END 9 |
| 27 | #define OS_INFO_IMAGE_START 10 |
| 28 | #define OS_INFO_IMAGE_END 11 |
| 29 | #define OS_INFO_IMAGE_PHYS 12 |
| 30 | #define OS_INFO_MAX 13 |
| 31 | |
| 32 | #define OS_INFO_FLAG_REIPL_CLEAR (1UL << 0) |
| 33 | |
| 34 | struct os_info_entry { |
| 35 | union { |
| 36 | u64 addr; |
| 37 | u64 val; |
| 38 | }; |
| 39 | u64 size; |
| 40 | u32 csum; |
| 41 | } __packed; |
| 42 | |
| 43 | struct os_info { |
| 44 | u64 magic; |
| 45 | u32 csum; |
| 46 | u16 version_major; |
| 47 | u16 version_minor; |
| 48 | u64 crashkernel_addr; |
| 49 | u64 crashkernel_size; |
| 50 | struct os_info_entry entry[OS_INFO_MAX]; |
| 51 | u8 reserved[3804]; |
| 52 | } __packed; |
| 53 | |
| 54 | void os_info_init(void); |
| 55 | void os_info_entry_add_data(int nr, void *ptr, u64 len); |
| 56 | void os_info_entry_add_val(int nr, u64 val); |
| 57 | void os_info_crashkernel_add(unsigned long base, unsigned long size); |
| 58 | u32 os_info_csum(struct os_info *os_info); |
| 59 | |
| 60 | #ifdef CONFIG_CRASH_DUMP |
| 61 | void *os_info_old_entry(int nr, unsigned long *size); |
| 62 | static inline unsigned long os_info_old_value(int nr) |
| 63 | { |
| 64 | unsigned long size; |
| 65 | |
| 66 | return (unsigned long)os_info_old_entry(nr, &size); |
| 67 | } |
| 68 | #else |
| 69 | static inline void *os_info_old_entry(int nr, unsigned long *size) |
| 70 | { |
| 71 | return NULL; |
| 72 | } |
| 73 | #endif |
| 74 | |
| 75 | #endif /* _ASM_S390_OS_INFO_H */ |
| 76 |
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