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1/*
2 * include/asm-s390/setup.h
3 *
4 * S390 version
5 * Copyright IBM Corp. 1999,2006
6 */
7
8#ifndef _ASM_S390_SETUP_H
9#define _ASM_S390_SETUP_H
10
11#define COMMAND_LINE_SIZE 896
12
13#ifdef __KERNEL__
14
15#include <asm/types.h>
16
17#define PARMAREA 0x10400
18#define MEMORY_CHUNKS 16 /* max 0x7fff */
19#define IPL_PARMBLOCK_ORIGIN 0x2000
20
21#ifndef __ASSEMBLY__
22
23#ifndef __s390x__
24#define IPL_DEVICE (*(unsigned long *) (0x10404))
25#define INITRD_START (*(unsigned long *) (0x1040C))
26#define INITRD_SIZE (*(unsigned long *) (0x10414))
27#else /* __s390x__ */
28#define IPL_DEVICE (*(unsigned long *) (0x10400))
29#define INITRD_START (*(unsigned long *) (0x10408))
30#define INITRD_SIZE (*(unsigned long *) (0x10410))
31#endif /* __s390x__ */
32#define COMMAND_LINE ((char *) (0x10480))
33
34#define CHUNK_READ_WRITE 0
35#define CHUNK_READ_ONLY 1
36
37struct mem_chunk {
38 unsigned long addr;
39 unsigned long size;
40 unsigned long type;
41};
42
43extern struct mem_chunk memory_chunk[];
44
45/*
46 * Machine features detected in head.S
47 */
48extern unsigned long machine_flags;
49
50#define MACHINE_IS_VM (machine_flags & 1)
51#define MACHINE_IS_P390 (machine_flags & 4)
52#define MACHINE_HAS_MVPG (machine_flags & 16)
53#define MACHINE_HAS_IDTE (machine_flags & 128)
54#define MACHINE_HAS_DIAG9C (machine_flags & 256)
55
56#ifndef __s390x__
57#define MACHINE_HAS_IEEE (machine_flags & 2)
58#define MACHINE_HAS_CSP (machine_flags & 8)
59#define MACHINE_HAS_DIAG44 (1)
60#define MACHINE_HAS_MVCOS (0)
61#else /* __s390x__ */
62#define MACHINE_HAS_IEEE (1)
63#define MACHINE_HAS_CSP (1)
64#define MACHINE_HAS_DIAG44 (machine_flags & 32)
65#define MACHINE_HAS_MVCOS (machine_flags & 512)
66#endif /* __s390x__ */
67
68#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
69
70/*
71 * Console mode. Override with conmode=
72 */
73extern unsigned int console_mode;
74extern unsigned int console_devno;
75extern unsigned int console_irq;
76
77#define CONSOLE_IS_UNDEFINED (console_mode == 0)
78#define CONSOLE_IS_SCLP (console_mode == 1)
79#define CONSOLE_IS_3215 (console_mode == 2)
80#define CONSOLE_IS_3270 (console_mode == 3)
81#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
82#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
83#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
84
85struct ipl_list_hdr {
86 u32 len;
87 u8 reserved1[3];
88 u8 version;
89 u32 blk0_len;
90 u8 pbt;
91 u8 flags;
92 u16 reserved2;
93} __attribute__((packed));
94
95struct ipl_block_fcp {
96 u8 reserved1[313-1];
97 u8 opt;
98 u8 reserved2[3];
99 u16 reserved3;
100 u16 devno;
101 u8 reserved4[4];
102 u64 wwpn;
103 u64 lun;
104 u32 bootprog;
105 u8 reserved5[12];
106 u64 br_lba;
107 u32 scp_data_len;
108 u8 reserved6[260];
109 u8 scp_data[];
110} __attribute__((packed));
111
112struct ipl_block_ccw {
113 u8 load_param[8];
114 u8 reserved1[84];
115 u8 reserved2[2];
116 u16 devno;
117 u8 vm_flags;
118 u8 reserved3[3];
119 u32 vm_parm_len;
120} __attribute__((packed));
121
122struct ipl_parameter_block {
123 struct ipl_list_hdr hdr;
124 union {
125 struct ipl_block_fcp fcp;
126 struct ipl_block_ccw ccw;
127 } ipl_info;
128} __attribute__((packed));
129
130#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
131 sizeof(struct ipl_block_fcp))
132
133#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
134 sizeof(struct ipl_block_ccw))
135
136#define IPL_MAX_SUPPORTED_VERSION (0)
137
138/*
139 * IPL validity flags and parameters as detected in head.S
140 */
141extern u32 ipl_flags;
142extern u16 ipl_devno;
143
144void do_reipl(void);
145
146enum {
147 IPL_DEVNO_VALID = 1,
148 IPL_PARMBLOCK_VALID = 2,
149};
150
151#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
152 IPL_PARMBLOCK_ORIGIN)
153#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
154
155#else /* __ASSEMBLY__ */
156
157#ifndef __s390x__
158#define IPL_DEVICE 0x10404
159#define INITRD_START 0x1040C
160#define INITRD_SIZE 0x10414
161#else /* __s390x__ */
162#define IPL_DEVICE 0x10400
163#define INITRD_START 0x10408
164#define INITRD_SIZE 0x10410
165#endif /* __s390x__ */
166#define COMMAND_LINE 0x10480
167
168#endif /* __ASSEMBLY__ */
169#endif /* __KERNEL__ */
170#endif /* _ASM_S390_SETUP_H */