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