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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 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_IDTE (machine_flags & 128)
42#define MACHINE_HAS_DIAG9C (machine_flags & 256)
43
44#ifndef __s390x__
45#define MACHINE_HAS_IEEE (machine_flags & 2)
46#define MACHINE_HAS_CSP (machine_flags & 8)
47#define MACHINE_HAS_DIAG44 (1)
48#define MACHINE_HAS_MVCOS (0)
49#else /* __s390x__ */
50#define MACHINE_HAS_IEEE (1)
51#define MACHINE_HAS_CSP (1)
52#define MACHINE_HAS_DIAG44 (machine_flags & 32)
53#define MACHINE_HAS_MVCOS (machine_flags & 512)
54#endif /* __s390x__ */
55
56
57#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
58
59/*
60 * Console mode. Override with conmode=
61 */
62extern unsigned int console_mode;
63extern unsigned int console_devno;
64extern unsigned int console_irq;
65
66#define CONSOLE_IS_UNDEFINED (console_mode == 0)
67#define CONSOLE_IS_SCLP (console_mode == 1)
68#define CONSOLE_IS_3215 (console_mode == 2)
69#define CONSOLE_IS_3270 (console_mode == 3)
70#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
71#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
72#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
73
74
75struct ipl_list_hdr {
76 u32 len;
77 u8 reserved1[3];
78 u8 version;
79 u32 blk0_len;
80 u8 pbt;
81 u8 flags;
82 u16 reserved2;
83} __attribute__((packed));
84
85struct ipl_block_fcp {
86 u8 reserved1[313-1];
87 u8 opt;
88 u8 reserved2[3];
89 u16 reserved3;
90 u16 devno;
91 u8 reserved4[4];
92 u64 wwpn;
93 u64 lun;
94 u32 bootprog;
95 u8 reserved5[12];
96 u64 br_lba;
97 u32 scp_data_len;
98 u8 reserved6[260];
99 u8 scp_data[];
100} __attribute__((packed));
101
102struct ipl_block_ccw {
103 u8 load_param[8];
104 u8 reserved1[84];
105 u8 reserved2[2];
106 u16 devno;
107 u8 vm_flags;
108 u8 reserved3[3];
109 u32 vm_parm_len;
110} __attribute__((packed));
111
112struct ipl_parameter_block {
113 struct ipl_list_hdr hdr;
114 union {
115 struct ipl_block_fcp fcp;
116 struct ipl_block_ccw ccw;
117 } ipl_info;
118} __attribute__((packed));
119
120#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
121 sizeof(struct ipl_block_fcp))
122
123#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
124 sizeof(struct ipl_block_ccw))
125
126#define IPL_MAX_SUPPORTED_VERSION (0)
127
128/*
129 * IPL validity flags and parameters as detected in head.S
130 */
131extern u32 ipl_flags;
132extern u16 ipl_devno;
133
134void do_reipl(void);
135
136enum {
137 IPL_DEVNO_VALID = 1,
138 IPL_PARMBLOCK_VALID = 2,
139};
140
141#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
142 IPL_PARMBLOCK_ORIGIN)
143#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
144
145#else /* __ASSEMBLY__ */
146
147#ifndef __s390x__
148#define IPL_DEVICE 0x10404
149#define INITRD_START 0x1040C
150#define INITRD_SIZE 0x10414
151#else /* __s390x__ */
152#define IPL_DEVICE 0x10400
153#define INITRD_START 0x10408
154#define INITRD_SIZE 0x10410
155#endif /* __s390x__ */
156#define COMMAND_LINE 0x10480
157
158#endif /* __ASSEMBLY__ */
159#endif /* __KERNEL__ */
160#endif /* _ASM_S390_SETUP_H */