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 17struct os_info_entry { 18 u64 addr; 19 u64 size; 20 u32 csum; 21} __packed; 22 23struct 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 34void os_info_init(void); 35void os_info_entry_add(int nr, void *ptr, u64 len); 36void os_info_crashkernel_add(unsigned long base, unsigned long size); 37u32 os_info_csum(struct os_info *os_info); 38 39#ifdef CONFIG_CRASH_DUMP 40void *os_info_old_entry(int nr, unsigned long *size); 41int copy_oldmem_kernel(void *dst, void *src, size_t count); 42#else 43static 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