projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| cf13f0ea | 1 | /* |
| a53c8fab | 2 | * Copyright IBM Corp. 2005 |
| cf13f0ea HC |
3 | * |
| 4 | * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com> | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef _S390_KEXEC_H | |
| 9 | #define _S390_KEXEC_H | |
| 10 | ||
| cf13f0ea | 11 | #include <asm/processor.h> |
| da477737 | 12 | #include <asm/page.h> |
| cf13f0ea HC |
13 | /* |
| 14 | * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return. | |
| 15 | * I.e. Maximum page that is mapped directly into kernel memory, | |
| 16 | * and kmap is not required. | |
| 17 | */ | |
| 18 | ||
| 19 | /* Maximum physical address we can use pages from */ | |
| 20 | #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) | |
| 21 | ||
| 22 | /* Maximum address we can reach in physical address mode */ | |
| 23 | #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) | |
| 24 | ||
| 25 | /* Maximum address we can use for the control pages */ | |
| 26 | /* Not more than 2GB */ | |
| a1a392f0 | 27 | #define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31) |
| cf13f0ea | 28 | |
| 7e01b5ac MS |
29 | /* Allocate control page with GFP_DMA */ |
| 30 | #define KEXEC_CONTROL_MEMORY_GFP GFP_DMA | |
| 31 | ||
| 60a0c68d MH |
32 | /* Maximum address we can use for the crash control pages */ |
| 33 | #define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL) | |
| 34 | ||
| cf13f0ea | 35 | /* Allocate one page for the pdp and the second for the code */ |
| 163f6876 | 36 | #define KEXEC_CONTROL_PAGE_SIZE 4096 |
| cf13f0ea | 37 | |
| dab7a7b1 MH |
38 | /* Alignment of crashkernel memory */ |
| 39 | #define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE | |
| 40 | ||
| cf13f0ea HC |
41 | /* The native architecture */ |
| 42 | #define KEXEC_ARCH KEXEC_ARCH_S390 | |
| 43 | ||
| cb78edfd MH |
44 | /* |
| 45 | * Size for s390x ELF notes per CPU | |
| 46 | * | |
| 47 | * Seven notes plus zero note at the end: prstatus, fpregset, timer, | |
| 48 | * tod_cmp, tod_reg, control regs, and prefix | |
| 49 | */ | |
| 50 | #define KEXEC_NOTE_BYTES \ | |
| 51 | (ALIGN(sizeof(struct elf_note), 4) * 8 + \ | |
| 52 | ALIGN(sizeof("CORE"), 4) * 7 + \ | |
| 53 | ALIGN(sizeof(struct elf_prstatus), 4) + \ | |
| 54 | ALIGN(sizeof(elf_fpregset_t), 4) + \ | |
| 55 | ALIGN(sizeof(u64), 4) + \ | |
| 56 | ALIGN(sizeof(u64), 4) + \ | |
| 57 | ALIGN(sizeof(u32), 4) + \ | |
| 58 | ALIGN(sizeof(u64) * 16, 4) + \ | |
| 59 | ALIGN(sizeof(u32), 4) \ | |
| 60 | ) | |
| 61 | ||
| bf208305 | 62 | /* Provide a dummy definition to avoid build failures. */ |
| 63 | static inline void crash_setup_regs(struct pt_regs *newregs, | |
| 64 | struct pt_regs *oldregs) { } | |
| 65 | ||
| cf13f0ea | 66 | #endif /*_S390_KEXEC_H */ |