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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
Kirill A. Shutemoved7b1882008-02-07 00:15:56 -080013#ifdef __KERNEL__
Heiko Carstenscf13f0e2005-06-25 14:58:11 -070014#include <asm/page.h>
Kirill A. Shutemoved7b1882008-02-07 00:15:56 -080015#endif
Heiko Carstenscf13f0e2005-06-25 14:58:11 -070016#include <asm/processor.h>
17/*
18 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
19 * I.e. Maximum page that is mapped directly into kernel memory,
20 * and kmap is not required.
21 */
22
23/* Maximum physical address we can use pages from */
24#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
25
26/* Maximum address we can reach in physical address mode */
27#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
28
29/* Maximum address we can use for the control pages */
30/* Not more than 2GB */
Heiko Carstensa1a392f2006-12-04 15:40:28 +010031#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)
Heiko Carstenscf13f0e2005-06-25 14:58:11 -070032
33/* Allocate one page for the pdp and the second for the code */
Huang Ying163f6872008-08-15 00:40:22 -070034#define KEXEC_CONTROL_PAGE_SIZE 4096
Heiko Carstenscf13f0e2005-06-25 14:58:11 -070035
36/* The native architecture */
37#define KEXEC_ARCH KEXEC_ARCH_S390
38
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 */