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