1/*
 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/processor.h>
14#include <asm/page.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 */
29#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)
30
31/* Maximum address we can use for the crash control pages */
32#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL)
33
34/* Allocate one page for the pdp and the second for the code */
35#define KEXEC_CONTROL_PAGE_SIZE 4096
36
37/* Alignment of crashkernel memory */
38#define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE
39
40/* The native architecture */
41#define KEXEC_ARCH KEXEC_ARCH_S390
42
43/*
44 * Size for s390x ELF notes per CPU
45 *
46 * Seven notes plus zero note at the end: prstatus, fpregset, timer,
47 * tod_cmp, tod_reg, control regs, and prefix
48 */
49#define KEXEC_NOTE_BYTES \
50	(ALIGN(sizeof(struct elf_note), 4) * 8 + \
51	 ALIGN(sizeof("CORE"), 4) * 7 + \
52	 ALIGN(sizeof(struct elf_prstatus), 4) + \
53	 ALIGN(sizeof(elf_fpregset_t), 4) + \
54	 ALIGN(sizeof(u64), 4) + \
55	 ALIGN(sizeof(u64), 4) + \
56	 ALIGN(sizeof(u32), 4) + \
57	 ALIGN(sizeof(u64) * 16, 4) + \
58	 ALIGN(sizeof(u32), 4) \
59	)
60
61/* Provide a dummy definition to avoid build failures. */
62static inline void crash_setup_regs(struct pt_regs *newregs,
63					struct pt_regs *oldregs) { }
64
65#endif /*_S390_KEXEC_H */

 1/*
 2 * Copyright IBM Corp. 2005
 
 
 3 *
 4 * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
 5 *
 6 */
 7
 8#ifndef _S390_KEXEC_H
 9#define _S390_KEXEC_H
10
11#include <asm/processor.h>
12#include <asm/page.h>
13/*
14 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
15 * I.e. Maximum page that is mapped directly into kernel memory,
16 * and kmap is not required.
17 */
18
19/* Maximum physical address we can use pages from */
20#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
21
22/* Maximum address we can reach in physical address mode */
23#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
24
25/* Maximum address we can use for the control pages */
26/* Not more than 2GB */
27#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)
28
29/* Maximum address we can use for the crash control pages */
30#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL)
31
32/* Allocate one page for the pdp and the second for the code */
33#define KEXEC_CONTROL_PAGE_SIZE 4096
34
35/* Alignment of crashkernel memory */
36#define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE
37
38/* The native architecture */
39#define KEXEC_ARCH KEXEC_ARCH_S390
40
41/*
42 * Size for s390x ELF notes per CPU
43 *
44 * Seven notes plus zero note at the end: prstatus, fpregset, timer,
45 * tod_cmp, tod_reg, control regs, and prefix
46 */
47#define KEXEC_NOTE_BYTES \
48	(ALIGN(sizeof(struct elf_note), 4) * 8 + \
49	 ALIGN(sizeof("CORE"), 4) * 7 + \
50	 ALIGN(sizeof(struct elf_prstatus), 4) + \
51	 ALIGN(sizeof(elf_fpregset_t), 4) + \
52	 ALIGN(sizeof(u64), 4) + \
53	 ALIGN(sizeof(u64), 4) + \
54	 ALIGN(sizeof(u32), 4) + \
55	 ALIGN(sizeof(u64) * 16, 4) + \
56	 ALIGN(sizeof(u32), 4) \
57	)
58
59/* Provide a dummy definition to avoid build failures. */
60static inline void crash_setup_regs(struct pt_regs *newregs,
61					struct pt_regs *oldregs) { }
62
63#endif /*_S390_KEXEC_H */