| /* |
| * include/asm-s390/kexec.h |
| * |
| * (C) Copyright IBM Corp. 2005 |
| * |
| * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com> |
| * |
| */ |
| |
| #ifndef _S390_KEXEC_H |
| #define _S390_KEXEC_H |
| |
| #ifdef __KERNEL__ |
| #include <asm/page.h> |
| #endif |
| #include <asm/processor.h> |
| /* |
| * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return. |
| * I.e. Maximum page that is mapped directly into kernel memory, |
| * and kmap is not required. |
| */ |
| |
| /* Maximum physical address we can use pages from */ |
| #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) |
| |
| /* Maximum address we can reach in physical address mode */ |
| #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) |
| |
| /* Maximum address we can use for the control pages */ |
| /* Not more than 2GB */ |
| #define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31) |
| |
| /* Maximum address we can use for the crash control pages */ |
| #define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL) |
| |
| /* Allocate one page for the pdp and the second for the code */ |
| #define KEXEC_CONTROL_PAGE_SIZE 4096 |
| |
| /* Alignment of crashkernel memory */ |
| #define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE |
| |
| /* The native architecture */ |
| #define KEXEC_ARCH KEXEC_ARCH_S390 |
| |
| /* |
| * Size for s390x ELF notes per CPU |
| * |
| * Seven notes plus zero note at the end: prstatus, fpregset, timer, |
| * tod_cmp, tod_reg, control regs, and prefix |
| */ |
| #define KEXEC_NOTE_BYTES \ |
| (ALIGN(sizeof(struct elf_note), 4) * 8 + \ |
| ALIGN(sizeof("CORE"), 4) * 7 + \ |
| ALIGN(sizeof(struct elf_prstatus), 4) + \ |
| ALIGN(sizeof(elf_fpregset_t), 4) + \ |
| ALIGN(sizeof(u64), 4) + \ |
| ALIGN(sizeof(u64), 4) + \ |
| ALIGN(sizeof(u32), 4) + \ |
| ALIGN(sizeof(u64) * 16, 4) + \ |
| ALIGN(sizeof(u32), 4) \ |
| ) |
| |
| /* Provide a dummy definition to avoid build failures. */ |
| static inline void crash_setup_regs(struct pt_regs *newregs, |
| struct pt_regs *oldregs) { } |
| |
| #endif /*_S390_KEXEC_H */ |