2 * include/asm-s390/setup.h
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
8 #ifndef _ASM_S390_SETUP_H
9 #define _ASM_S390_SETUP_H
13 #include <asm/types.h>
15 #define PARMAREA 0x10400
16 #define COMMAND_LINE_SIZE 896
17 #define MEMORY_CHUNKS 16 /* max 0x7fff */
18 #define IPL_PARMBLOCK_ORIGIN 0x2000
23 #define IPL_DEVICE (*(unsigned long *) (0x10404))
24 #define INITRD_START (*(unsigned long *) (0x1040C))
25 #define INITRD_SIZE (*(unsigned long *) (0x10414))
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))
34 * Machine features detected in head.S
36 extern unsigned long machine_flags;
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)
44 #define MACHINE_HAS_IEEE (machine_flags & 2)
45 #define MACHINE_HAS_CSP (machine_flags & 8)
46 #define MACHINE_HAS_DIAG44 (1)
48 #define MACHINE_HAS_IEEE (1)
49 #define MACHINE_HAS_CSP (1)
50 #define MACHINE_HAS_DIAG44 (machine_flags & 32)
51 #endif /* __s390x__ */
54 #define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
57 * Console mode. Override with conmode=
59 extern unsigned int console_mode;
60 extern unsigned int console_devno;
61 extern unsigned int console_irq;
63 #define CONSOLE_IS_UNDEFINED (console_mode == 0)
64 #define CONSOLE_IS_SCLP (console_mode == 1)
65 #define CONSOLE_IS_3215 (console_mode == 2)
66 #define CONSOLE_IS_3270 (console_mode == 3)
67 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
68 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
69 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
71 struct ipl_list_header {
75 } __attribute__((packed));
77 struct ipl_block_fcp {
91 } __attribute__((packed));
93 struct ipl_parameter_block {
96 struct ipl_list_header header;
98 struct ipl_block_fcp fcp;
99 } __attribute__((packed));
101 #define IPL_MAX_SUPPORTED_VERSION (0)
103 #define IPL_TYPE_FCP (0)
106 * IPL validity flags and parameters as detected in head.S
108 extern u32 ipl_parameter_flags;
109 extern u16 ipl_devno;
111 #define IPL_DEVNO_VALID (ipl_parameter_flags & 1)
112 #define IPL_PARMBLOCK_VALID (ipl_parameter_flags & 2)
114 #define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
115 IPL_PARMBLOCK_ORIGIN)
116 #define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.length)
118 #else /* __ASSEMBLY__ */
121 #define IPL_DEVICE 0x10404
122 #define INITRD_START 0x1040C
123 #define INITRD_SIZE 0x10414
124 #else /* __s390x__ */
125 #define IPL_DEVICE 0x10400
126 #define INITRD_START 0x10408
127 #define INITRD_SIZE 0x10410
128 #endif /* __s390x__ */
129 #define COMMAND_LINE 0x10480
131 #endif /* __ASSEMBLY__ */
132 #endif /* __KERNEL__ */
133 #endif /* _ASM_S390_SETUP_H */