/* SPDX-License-Identifier: GPL-2.0 */ /* * OS info memory interface * * Copyright IBM Corp. 2012 * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com> */ #ifndef _ASM_S390_OS_INFO_H #define _ASM_S390_OS_INFO_H #define OS_INFO_VERSION_MAJOR 1 #define OS_INFO_VERSION_MINOR 1 #define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */ #define OS_INFO_VMCOREINFO 0 #define OS_INFO_REIPL_BLOCK 1 struct os_info_entry { u64 addr; u64 size; u32 csum; } __packed; struct os_info { u64 magic; u32 csum; u16 version_major; u16 version_minor; u64 crashkernel_addr; u64 crashkernel_size; struct os_info_entry entry[2]; u8 reserved[4024]; } __packed; void os_info_init(void); void os_info_entry_add(int nr, void *ptr, u64 len); void os_info_crashkernel_add(unsigned long base, unsigned long size); u32 os_info_csum(struct os_info *os_info); #ifdef CONFIG_CRASH_DUMP void *os_info_old_entry(int nr, unsigned long *size); int copy_oldmem_kernel(void *dst, void *src, size_t count); #else static inline void *os_info_old_entry(int nr, unsigned long *size) { return NULL; } #endif #endif /* _ASM_S390_OS_INFO_H */