kernel-ark/include/asm-powerpc/kdump.h
Michael Ellerman 0cc4746cad [PATCH] powerpc: Reroute interrupts from 0 + offset to PHYSICAL_START + offset
Regardless of where the kernel's linked we always get interrupts at low
addresses. This patch creates a trampoline in the first 3 pages of memory,
where interrupts land, and patches those addresses to jump into the real
kernel code at PHYSICAL_START.

We also need to reserve the trampoline code and a bit more in prom.c

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-09 14:52:21 +11:00

14 lines
351 B
C

#ifndef _PPC64_KDUMP_H
#define _PPC64_KDUMP_H
/* How many bytes to reserve at zero for kdump. The reserve limit should
* be greater or equal to the trampoline's end address. */
#define KDUMP_RESERVE_LIMIT 0x8000
#define KDUMP_TRAMPOLINE_START 0x0100
#define KDUMP_TRAMPOLINE_END 0x3000
extern void kdump_setup(void);
#endif /* __PPC64_KDUMP_H */