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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) | |
45 | #define VMCOREINFO_SIZE(name) \ | |
46 | vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \ | |
47 | (unsigned long)sizeof(name)) | |
48 | #define VMCOREINFO_STRUCT_SIZE(name) \ | |
49 | vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \ | |
50 | (unsigned long)sizeof(struct name)) | |
51 | #define VMCOREINFO_OFFSET(name, field) \ | |
52 | vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \ | |
53 | (unsigned long)offsetof(struct name, field)) | |
54 | #define VMCOREINFO_LENGTH(name, value) \ | |
55 | vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value) | |
56 | #define VMCOREINFO_NUMBER(name) \ | |
57 | vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name) | |
58 | #define VMCOREINFO_CONFIG(name) \ | |
59 | vmcoreinfo_append_str("CONFIG_%s=y\n", #name) | |
60 | ||
203e9e41 | 61 | extern u32 *vmcoreinfo_note; |
692f66f2 | 62 | |
51dbd925 HB |
63 | Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type, |
64 | void *data, size_t data_len); | |
65 | void final_note(Elf_Word *buf); | |
66 | ||
692f66f2 HB |
67 | int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, |
68 | unsigned long long *crash_size, unsigned long long *crash_base); | |
69 | int parse_crashkernel_high(char *cmdline, unsigned long long system_ram, | |
70 | unsigned long long *crash_size, unsigned long long *crash_base); | |
71 | int parse_crashkernel_low(char *cmdline, unsigned long long system_ram, | |
72 | unsigned long long *crash_size, unsigned long long *crash_base); | |
73 | ||
74 | #endif /* LINUX_CRASH_CORE_H */ |