1 /* 2 * OS info memory interface 3 * 4 * Copyright IBM Corp. 2012 5 * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com> 6 */ 7 #ifndef _ASM_S390_OS_INFO_H 8 #define _ASM_S390_OS_INFO_H 9 10 #define OS_INFO_VERSION_MAJOR 1 11 #define OS_INFO_VERSION_MINOR 1 12 #define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */ 13 14 #define OS_INFO_VMCOREINFO 0 15 #define OS_INFO_REIPL_BLOCK 1 16 17 struct os_info_entry { 18 u64 addr; 19 u64 size; 20 u32 csum; 21 } __packed; 22 23 struct os_info { 24 u64 magic; 25 u32 csum; 26 u16 version_major; 27 u16 version_minor; 28 u64 crashkernel_addr; 29 u64 crashkernel_size; 30 struct os_info_entry entry[2]; 31 u8 reserved[4024]; 32 } __packed; 33 34 void os_info_init(void); 35 void os_info_entry_add(int nr, void *ptr, u64 len); 36 void os_info_crashkernel_add(unsigned long base, unsigned long size); 37 u32 os_info_csum(struct os_info *os_info); 38 39 #ifdef CONFIG_CRASH_DUMP 40 void *os_info_old_entry(int nr, unsigned long *size); 41 int copy_from_oldmem(void *dest, void *src, size_t count); 42 #else 43 static inline void *os_info_old_entry(int nr, unsigned long *size) 44 { 45 return NULL; 46 } 47 #endif 48 49 #endif /* _ASM_S390_OS_INFO_H */ 50