1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef LINUX_CRASH_RESERVE_H |
3 | #define LINUX_CRASH_RESERVE_H |
4 | |
5 | #include <linux/linkage.h> |
6 | #include <linux/elfcore.h> |
7 | #include <linux/elf.h> |
8 | #ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION |
9 | #include <asm/crash_reserve.h> |
10 | #endif |
11 | |
12 | /* Location of a reserved region to hold the crash kernel. |
13 | */ |
14 | extern struct resource crashk_res; |
15 | extern struct resource crashk_low_res; |
16 | |
17 | int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, |
18 | unsigned long long *crash_size, unsigned long long *crash_base, |
19 | unsigned long long *low_size, bool *high); |
20 | |
21 | #ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION |
22 | #ifndef DEFAULT_CRASH_KERNEL_LOW_SIZE |
23 | #define DEFAULT_CRASH_KERNEL_LOW_SIZE (128UL << 20) |
24 | #endif |
25 | #ifndef CRASH_ALIGN |
26 | #define CRASH_ALIGN SZ_2M |
27 | #endif |
28 | #ifndef CRASH_ADDR_LOW_MAX |
29 | #define CRASH_ADDR_LOW_MAX SZ_4G |
30 | #endif |
31 | #ifndef CRASH_ADDR_HIGH_MAX |
32 | #define CRASH_ADDR_HIGH_MAX memblock_end_of_DRAM() |
33 | #endif |
34 | |
35 | void __init reserve_crashkernel_generic(char *cmdline, |
36 | unsigned long long crash_size, |
37 | unsigned long long crash_base, |
38 | unsigned long long crash_low_size, |
39 | bool high); |
40 | #else |
41 | static inline void __init reserve_crashkernel_generic(char *cmdline, |
42 | unsigned long long crash_size, |
43 | unsigned long long crash_base, |
44 | unsigned long long crash_low_size, |
45 | bool high) |
46 | {} |
47 | #endif |
48 | #endif /* LINUX_CRASH_RESERVE_H */ |
49 | |