2 * include/asm-s390/setup.h
5 * Copyright IBM Corp. 1999,2006
8 #ifndef _ASM_S390_SETUP_H
9 #define _ASM_S390_SETUP_H
11 #define COMMAND_LINE_SIZE 896
15 #include <asm/types.h>
17 #define PARMAREA 0x10400
18 #define MEMORY_CHUNKS 16 /* max 0x7fff */
19 #define IPL_PARMBLOCK_ORIGIN 0x2000
24 #define IPL_DEVICE (*(unsigned long *) (0x10404))
25 #define INITRD_START (*(unsigned long *) (0x1040C))
26 #define INITRD_SIZE (*(unsigned long *) (0x10414))
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))
34 #define CHUNK_READ_WRITE 0
35 #define CHUNK_READ_ONLY 1
43 extern struct mem_chunk memory_chunk[];
45 #ifdef CONFIG_S390_SWITCH_AMODE
46 extern unsigned int switch_amode;
48 #define switch_amode (0)
51 #ifdef CONFIG_S390_EXEC_PROTECT
52 extern unsigned int s390_noexec;
54 #define s390_noexec (0)
58 * Machine features detected in head.S
60 extern unsigned long machine_flags;
62 #define MACHINE_IS_VM (machine_flags & 1)
63 #define MACHINE_IS_P390 (machine_flags & 4)
64 #define MACHINE_HAS_MVPG (machine_flags & 16)
65 #define MACHINE_HAS_IDTE (machine_flags & 128)
66 #define MACHINE_HAS_DIAG9C (machine_flags & 256)
69 #define MACHINE_HAS_IEEE (machine_flags & 2)
70 #define MACHINE_HAS_CSP (machine_flags & 8)
71 #define MACHINE_HAS_DIAG44 (1)
72 #define MACHINE_HAS_MVCOS (0)
74 #define MACHINE_HAS_IEEE (1)
75 #define MACHINE_HAS_CSP (1)
76 #define MACHINE_HAS_DIAG44 (machine_flags & 32)
77 #define MACHINE_HAS_MVCOS (machine_flags & 512)
78 #endif /* __s390x__ */
80 #define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
83 * Console mode. Override with conmode=
85 extern unsigned int console_mode;
86 extern unsigned int console_devno;
87 extern unsigned int console_irq;
89 extern char vmhalt_cmd[];
90 extern char vmpoff_cmd[];
92 #define CONSOLE_IS_UNDEFINED (console_mode == 0)
93 #define CONSOLE_IS_SCLP (console_mode == 1)
94 #define CONSOLE_IS_3215 (console_mode == 2)
95 #define CONSOLE_IS_3270 (console_mode == 3)
96 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
97 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
98 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
100 struct ipl_list_hdr {
108 } __attribute__((packed));
110 struct ipl_block_fcp {
125 } __attribute__((packed));
127 struct ipl_block_ccw {
135 } __attribute__((packed));
137 struct ipl_parameter_block {
138 struct ipl_list_hdr hdr;
140 struct ipl_block_fcp fcp;
141 struct ipl_block_ccw ccw;
143 } __attribute__((packed));
145 #define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
146 sizeof(struct ipl_block_fcp))
148 #define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
149 sizeof(struct ipl_block_ccw))
151 #define IPL_MAX_SUPPORTED_VERSION (0)
154 * IPL validity flags and parameters as detected in head.S
156 extern u32 ipl_flags;
157 extern u16 ipl_devno;
159 extern void do_reipl(void);
160 extern void ipl_save_parameters(void);
164 IPL_PARMBLOCK_VALID = 2,
168 #define NSS_NAME_SIZE 8
170 extern char kernel_nss_name[];
172 #define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
173 IPL_PARMBLOCK_ORIGIN)
174 #define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
176 #else /* __ASSEMBLY__ */
179 #define IPL_DEVICE 0x10404
180 #define INITRD_START 0x1040C
181 #define INITRD_SIZE 0x10414
182 #else /* __s390x__ */
183 #define IPL_DEVICE 0x10400
184 #define INITRD_START 0x10408
185 #define INITRD_SIZE 0x10410
186 #endif /* __s390x__ */
187 #define COMMAND_LINE 0x10480
189 #endif /* __ASSEMBLY__ */
190 #endif /* __KERNEL__ */
191 #endif /* _ASM_S390_SETUP_H */