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1/*
2 * include/asm-s390/setup.h
3 *
4 * S390 version
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 */
7
8#ifndef _ASM_S390_SETUP_H
9#define _ASM_S390_SETUP_H
10
11#ifdef __KERNEL__
12
13#include <asm/types.h>
14
15#define PARMAREA 0x10400
16#define COMMAND_LINE_SIZE 896
17#define RAMDISK_ORIGIN 0x800000
18#define RAMDISK_SIZE 0x800000
19#define MEMORY_CHUNKS 16 /* max 0x7fff */
20#define IPL_PARMBLOCK_ORIGIN 0x2000
21
22#ifndef __ASSEMBLY__
23
24#ifndef __s390x__
25#define IPL_DEVICE (*(unsigned long *) (0x10404))
26#define INITRD_START (*(unsigned long *) (0x1040C))
27#define INITRD_SIZE (*(unsigned long *) (0x10414))
28#else /* __s390x__ */
29#define IPL_DEVICE (*(unsigned long *) (0x10400))
30#define INITRD_START (*(unsigned long *) (0x10408))
31#define INITRD_SIZE (*(unsigned long *) (0x10410))
32#endif /* __s390x__ */
33#define COMMAND_LINE ((char *) (0x10480))
34
35/*
36 * Machine features detected in head.S
37 */
38extern unsigned long machine_flags;
39
40#define MACHINE_IS_VM (machine_flags & 1)
41#define MACHINE_IS_P390 (machine_flags & 4)
42#define MACHINE_HAS_MVPG (machine_flags & 16)
43#define MACHINE_HAS_DIAG44 (machine_flags & 32)
44#define MACHINE_HAS_IDTE (machine_flags & 128)
45
46#ifndef __s390x__
47#define MACHINE_HAS_IEEE (machine_flags & 2)
48#define MACHINE_HAS_CSP (machine_flags & 8)
49#else /* __s390x__ */
50#define MACHINE_HAS_IEEE (1)
51#define MACHINE_HAS_CSP (1)
52#endif /* __s390x__ */
53
54
55#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
56
57/*
58 * Console mode. Override with conmode=
59 */
60extern unsigned int console_mode;
61extern unsigned int console_devno;
62extern unsigned int console_irq;
63
64#define CONSOLE_IS_UNDEFINED (console_mode == 0)
65#define CONSOLE_IS_SCLP (console_mode == 1)
66#define CONSOLE_IS_3215 (console_mode == 2)
67#define CONSOLE_IS_3270 (console_mode == 3)
68#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
69#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
70#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
71
72struct ipl_list_header {
73 u32 length;
74 u8 reserved[3];
75 u8 version;
76} __attribute__((packed));
77
78struct ipl_block_fcp {
79 u32 length;
80 u8 pbt;
81 u8 reserved1[322-1];
82 u16 devno;
83 u8 reserved2[4];
84 u64 wwpn;
85 u64 lun;
86 u32 bootprog;
87 u8 reserved3[12];
88 u64 br_lba;
89 u32 scp_data_len;
90 u8 reserved4[260];
91 u8 scp_data[];
92} __attribute__((packed));
93
94struct ipl_parameter_block {
95 union {
96 u32 length;
97 struct ipl_list_header header;
98 } hdr;
99 struct ipl_block_fcp fcp;
100} __attribute__((packed));
101
102#define IPL_MAX_SUPPORTED_VERSION (0)
103
104#define IPL_TYPE_FCP (0)
105
106/*
107 * IPL validity flags and parameters as detected in head.S
108 */
109extern u32 ipl_parameter_flags;
110extern u16 ipl_devno;
111
112#define IPL_DEVNO_VALID (ipl_parameter_flags & 1)
113#define IPL_PARMBLOCK_VALID (ipl_parameter_flags & 2)
114
115#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
116 IPL_PARMBLOCK_ORIGIN)
117#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.length)
118
119#else /* __ASSEMBLY__ */
120
121#ifndef __s390x__
122#define IPL_DEVICE 0x10404
123#define INITRD_START 0x1040C
124#define INITRD_SIZE 0x10414
125#else /* __s390x__ */
126#define IPL_DEVICE 0x10400
127#define INITRD_START 0x10408
128#define INITRD_SIZE 0x10410
129#endif /* __s390x__ */
130#define COMMAND_LINE 0x10480
131
132#endif /* __ASSEMBLY__ */
133#endif /* __KERNEL__ */
134#endif /* _ASM_S390_SETUP_H */