Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * S390 version
4 * Copyright IBM Corp. 1999, 2017
5 */
6#ifndef _ASM_S390_SETUP_H
7#define _ASM_S390_SETUP_H
8
9#include <linux/const.h>
10#include <uapi/asm/setup.h>
11
12#define EP_OFFSET 0x10008
13#define EP_STRING "S390EP"
14#define PARMAREA 0x10400
15#define PARMAREA_END 0x11000
16
17/*
18 * Machine features detected in early.c
19 */
20
21#define MACHINE_FLAG_VM _BITUL(0)
22#define MACHINE_FLAG_KVM _BITUL(1)
23#define MACHINE_FLAG_LPAR _BITUL(2)
24#define MACHINE_FLAG_DIAG9C _BITUL(3)
25#define MACHINE_FLAG_ESOP _BITUL(4)
26#define MACHINE_FLAG_IDTE _BITUL(5)
27#define MACHINE_FLAG_DIAG44 _BITUL(6)
28#define MACHINE_FLAG_EDAT1 _BITUL(7)
29#define MACHINE_FLAG_EDAT2 _BITUL(8)
30#define MACHINE_FLAG_TOPOLOGY _BITUL(10)
31#define MACHINE_FLAG_TE _BITUL(11)
32#define MACHINE_FLAG_TLB_LC _BITUL(12)
33#define MACHINE_FLAG_VX _BITUL(13)
34#define MACHINE_FLAG_TLB_GUEST _BITUL(14)
35#define MACHINE_FLAG_NX _BITUL(15)
36#define MACHINE_FLAG_GS _BITUL(16)
37#define MACHINE_FLAG_SCC _BITUL(17)
38
39#define LPP_MAGIC _BITUL(31)
40#define LPP_PID_MASK _AC(0xffffffff, UL)
41
42/* Offsets to entry points in kernel/head.S */
43
44#define STARTUP_NORMAL_OFFSET 0x10000
45#define STARTUP_KDUMP_OFFSET 0x10010
46
47/* Offsets to parameters in kernel/head.S */
48
49#define IPL_DEVICE_OFFSET 0x10400
50#define INITRD_START_OFFSET 0x10408
51#define INITRD_SIZE_OFFSET 0x10410
52#define OLDMEM_BASE_OFFSET 0x10418
53#define OLDMEM_SIZE_OFFSET 0x10420
54#define COMMAND_LINE_OFFSET 0x10480
55
56#ifndef __ASSEMBLY__
57
58#include <asm/lowcore.h>
59#include <asm/types.h>
60
61#define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET))
62#define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET))
63#define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET))
64#define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET))
65#define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET))
66#define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET))
67
68extern int noexec_disabled;
69extern int memory_end_set;
70extern unsigned long memory_end;
71extern unsigned long max_physmem_end;
72
73#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
74#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
75#define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
76
77#define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
78#define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
79#define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
80#define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
81#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
82#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
83#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
84#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
85#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
86#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
87#define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
88#define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
89#define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
90#define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
91
92/*
93 * Console mode. Override with conmode=
94 */
95extern unsigned int console_mode;
96extern unsigned int console_devno;
97extern unsigned int console_irq;
98
99extern char vmhalt_cmd[];
100extern char vmpoff_cmd[];
101
102#define CONSOLE_IS_UNDEFINED (console_mode == 0)
103#define CONSOLE_IS_SCLP (console_mode == 1)
104#define CONSOLE_IS_3215 (console_mode == 2)
105#define CONSOLE_IS_3270 (console_mode == 3)
106#define CONSOLE_IS_VT220 (console_mode == 4)
107#define CONSOLE_IS_HVC (console_mode == 5)
108#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
109#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
110#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
111#define SET_CONSOLE_VT220 do { console_mode = 4; } while (0)
112#define SET_CONSOLE_HVC do { console_mode = 5; } while (0)
113
114#ifdef CONFIG_PFAULT
115extern int pfault_init(void);
116extern void pfault_fini(void);
117#else /* CONFIG_PFAULT */
118#define pfault_init() ({-1;})
119#define pfault_fini() do { } while (0)
120#endif /* CONFIG_PFAULT */
121
122#ifdef CONFIG_VMCP
123void vmcp_cma_reserve(void);
124#else
125static inline void vmcp_cma_reserve(void) { }
126#endif
127
128void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
129
130void cmma_init(void);
131void cmma_init_nodat(void);
132
133extern void (*_machine_restart)(char *command);
134extern void (*_machine_halt)(void);
135extern void (*_machine_power_off)(void);
136
137#else /* __ASSEMBLY__ */
138
139#define IPL_DEVICE (IPL_DEVICE_OFFSET)
140#define INITRD_START (INITRD_START_OFFSET)
141#define INITRD_SIZE (INITRD_SIZE_OFFSET)
142#define OLDMEM_BASE (OLDMEM_BASE_OFFSET)
143#define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET)
144#define COMMAND_LINE (COMMAND_LINE_OFFSET)
145
146#endif /* __ASSEMBLY__ */
147#endif /* _ASM_S390_SETUP_H */