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Heiko Carstenscf13f0e2005-06-25 14:58:11 -07001/*
2 * include/asm-s390/kexec.h
3 *
4 * (C) Copyright IBM Corp. 2005
5 *
6 * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
7 *
8 */
9
10#ifndef _S390_KEXEC_H
11#define _S390_KEXEC_H
12
13#include <asm/page.h>
14#include <asm/processor.h>
15/*
16 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
17 * I.e. Maximum page that is mapped directly into kernel memory,
18 * and kmap is not required.
19 */
20
21/* Maximum physical address we can use pages from */
22#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
23
24/* Maximum address we can reach in physical address mode */
25#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
26
27/* Maximum address we can use for the control pages */
28/* Not more than 2GB */
Heiko Carstensa1a392f2006-12-04 15:40:28 +010029#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)
Heiko Carstenscf13f0e2005-06-25 14:58:11 -070030
31/* Allocate one page for the pdp and the second for the code */
32#define KEXEC_CONTROL_CODE_SIZE 4096
33
34/* The native architecture */
35#define KEXEC_ARCH KEXEC_ARCH_S390
36
37#define MAX_NOTE_BYTES 1024
Heiko Carstenscf13f0e2005-06-25 14:58:11 -070038
akpm@osdl.orgbf208302006-01-09 20:51:45 -080039/* Provide a dummy definition to avoid build failures. */
40static inline void crash_setup_regs(struct pt_regs *newregs,
41 struct pt_regs *oldregs) { }
42
Heiko Carstenscf13f0e2005-06-25 14:58:11 -070043#endif /*_S390_KEXEC_H */