projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 692f66f2 HB |
2 | #ifndef LINUX_CRASH_CORE_H |
| 3 | #define LINUX_CRASH_CORE_H | |
| 4 | ||
| 5 | #include <linux/linkage.h> | |
| 6 | #include <linux/elfcore.h> | |
| 7 | #include <linux/elf.h> | |
| 8 | ||
| 9 | #define CRASH_CORE_NOTE_NAME "CORE" | |
| 10 | #define CRASH_CORE_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4) | |
| 11 | #define CRASH_CORE_NOTE_NAME_BYTES ALIGN(sizeof(CRASH_CORE_NOTE_NAME), 4) | |
| 12 | #define CRASH_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4) | |
| 13 | ||
| cd0ae1d3 MH |
14 | /* |
| 15 | * The per-cpu notes area is a list of notes terminated by a "NULL" | |
| 16 | * note header. For kdump, the code in vmcore.c runs in the context | |
| 17 | * of the second kernel to combine them into one note. | |
| 18 | */ | |
| 692f66f2 HB |
19 | #define CRASH_CORE_NOTE_BYTES ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \ |
| 20 | CRASH_CORE_NOTE_NAME_BYTES + \ | |
| 21 | CRASH_CORE_NOTE_DESC_BYTES) | |
| 22 | ||
| 203e9e41 | 23 | #define VMCOREINFO_BYTES PAGE_SIZE |
| 692f66f2 HB |
24 | #define VMCOREINFO_NOTE_NAME "VMCOREINFO" |
| 25 | #define VMCOREINFO_NOTE_NAME_BYTES ALIGN(sizeof(VMCOREINFO_NOTE_NAME), 4) | |
| 26 | #define VMCOREINFO_NOTE_SIZE ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \ | |
| 27 | VMCOREINFO_NOTE_NAME_BYTES + \ | |
| 28 | VMCOREINFO_BYTES) | |
| 29 | ||
| 30 | typedef u32 note_buf_t[CRASH_CORE_NOTE_BYTES/4]; | |
| 31 | ||
| 1229384f | 32 | void crash_update_vmcoreinfo_safecopy(void *ptr); |
| 692f66f2 HB |
33 | void crash_save_vmcoreinfo(void); |
| 34 | void arch_crash_save_vmcoreinfo(void); | |
| 35 | __printf(1, 2) | |
| 36 | void vmcoreinfo_append_str(const char *fmt, ...); | |
| 37 | phys_addr_t paddr_vmcoreinfo_note(void); | |
| 38 | ||
| 39 | #define VMCOREINFO_OSRELEASE(value) \ | |
| 40 | vmcoreinfo_append_str("OSRELEASE=%s\n", value) | |
| 41 | #define VMCOREINFO_PAGESIZE(value) \ | |
| 42 | vmcoreinfo_append_str("PAGESIZE=%ld\n", value) | |
| 43 | #define VMCOREINFO_SYMBOL(name) \ | |
| 44 | vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name) | |
| a0b12803 KS |
45 | #define VMCOREINFO_SYMBOL_ARRAY(name) \ |
| 46 | vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)name) | |
| 692f66f2 HB |
47 | #define VMCOREINFO_SIZE(name) \ |
| 48 | vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \ | |
| 49 | (unsigned long)sizeof(name)) | |
| 50 | #define VMCOREINFO_STRUCT_SIZE(name) \ | |
| 51 | vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \ | |
| 52 | (unsigned long)sizeof(struct name)) | |
| 53 | #define VMCOREINFO_OFFSET(name, field) \ | |
| 54 | vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \ | |
| 55 | (unsigned long)offsetof(struct name, field)) | |
| 56 | #define VMCOREINFO_LENGTH(name, value) \ | |
| 57 | vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value) | |
| 58 | #define VMCOREINFO_NUMBER(name) \ | |
| 59 | vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name) | |
| 60 | #define VMCOREINFO_CONFIG(name) \ | |
| 61 | vmcoreinfo_append_str("CONFIG_%s=y\n", #name) | |
| 62 | ||
| 203e9e41 | 63 | extern u32 *vmcoreinfo_note; |
| 692f66f2 | 64 | |
| 51dbd925 HB |
65 | Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type, |
| 66 | void *data, size_t data_len); | |
| 67 | void final_note(Elf_Word *buf); | |
| 68 | ||
| 692f66f2 HB |
69 | int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, |
| 70 | unsigned long long *crash_size, unsigned long long *crash_base); | |
| 71 | int parse_crashkernel_high(char *cmdline, unsigned long long system_ram, | |
| 72 | unsigned long long *crash_size, unsigned long long *crash_base); | |
| 73 | int parse_crashkernel_low(char *cmdline, unsigned long long system_ram, | |
| 74 | unsigned long long *crash_size, unsigned long long *crash_base); | |
| 75 | ||
| 76 | #endif /* LINUX_CRASH_CORE_H */ |