| /* SPDX-License-Identifier: GPL-2.0 */ | |
| #ifndef _PPC64_KDUMP_H | |
| #define _PPC64_KDUMP_H | |
| #include <asm/page.h> | |
| #define KDUMP_KERNELBASE 0x2000000 | |
| /* How many bytes to reserve at zero for kdump. The reserve limit should | |
| * be greater or equal to the trampoline's end address. | |
| * Reserve to the end of the FWNMI area, see head_64.S */ | |
| #define KDUMP_RESERVE_LIMIT 0x10000 /* 64K */ | |
| #ifdef CONFIG_CRASH_DUMP | |
| /* | |
| * On PPC64 translation is disabled during trampoline setup, so we use | |
| * physical addresses. Though on PPC32 translation is already enabled, | |
| * so we can't do the same. Luckily create_trampoline() creates relative | |
| * branches, so we can just add the PAGE_OFFSET and don't worry about it. | |
| */ | |
| #ifdef __powerpc64__ | |
| #define KDUMP_TRAMPOLINE_START 0x0100 | |
| #define KDUMP_TRAMPOLINE_END 0x3000 | |
| #else | |
| #define KDUMP_TRAMPOLINE_START (0x0100 + PAGE_OFFSET) | |
| #define KDUMP_TRAMPOLINE_END (0x3000 + PAGE_OFFSET) | |
| #endif /* __powerpc64__ */ | |
| #define KDUMP_MIN_TCE_ENTRIES 2048 | |
| #endif /* CONFIG_CRASH_DUMP */ | |
| #ifndef __ASSEMBLER__ | |
| #if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_NONSTATIC_KERNEL) | |
| extern void reserve_kdump_trampoline(void); | |
| extern void setup_kdump_trampoline(void); | |
| #else | |
| /* !CRASH_DUMP || !NONSTATIC_KERNEL */ | |
| static inline void reserve_kdump_trampoline(void) { ; } | |
| static inline void setup_kdump_trampoline(void) { ; } | |
| #endif | |
| #endif /* __ASSEMBLER__ */ | |
| #endif /* __PPC64_KDUMP_H */ |