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