mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 06:34:11 +08:00
f8f50b1bdd
Wire up the trampoline code for ppc32 to relay exceptions from the vectors at address 0 to vectors at address 32MB, and modify Kconfig to enable Kdump support for all classic powerpcs. Signed-off-by: Dale Farnsworth <dale@farnsworth.org> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
#ifndef _PPC64_KDUMP_H
|
|
#define _PPC64_KDUMP_H
|
|
|
|
#include <asm/page.h>
|
|
|
|
/* Kdump kernel runs at 32 MB, change at your peril. */
|
|
#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 __ASSEMBLY__
|
|
|
|
#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE)
|
|
extern void reserve_kdump_trampoline(void);
|
|
extern void setup_kdump_trampoline(void);
|
|
#else
|
|
/* !CRASH_DUMP || RELOCATABLE */
|
|
static inline void reserve_kdump_trampoline(void) { ; }
|
|
static inline void setup_kdump_trampoline(void) { ; }
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __PPC64_KDUMP_H */
|