summaryrefslogtreecommitdiffstats
path: root/arch/s390/include/asm/setup.h
blob: 32f70873e2b7d5bc31e48b0ce24da5e965e26dfe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
/* SPDX-License-Identifier: GPL-2.0 */
/*
 *  S390 version
 *    Copyright IBM Corp. 1999, 2017
 */
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H

#include <linux/bits.h>
#include <uapi/asm/setup.h>
#include <linux/build_bug.h>

#define PARMAREA		0x10400

#define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE
/*
 * Machine features detected in early.c
 */

#define MACHINE_FLAG_VM		BIT(0)
#define MACHINE_FLAG_KVM	BIT(1)
#define MACHINE_FLAG_LPAR	BIT(2)
#define MACHINE_FLAG_DIAG9C	BIT(3)
#define MACHINE_FLAG_ESOP	BIT(4)
#define MACHINE_FLAG_IDTE	BIT(5)
#define MACHINE_FLAG_EDAT1	BIT(7)
#define MACHINE_FLAG_EDAT2	BIT(8)
#define MACHINE_FLAG_TOPOLOGY	BIT(10)
#define MACHINE_FLAG_TE		BIT(11)
#define MACHINE_FLAG_TLB_LC	BIT(12)
#define MACHINE_FLAG_TLB_GUEST	BIT(14)
#define MACHINE_FLAG_NX		BIT(15)
#define MACHINE_FLAG_GS		BIT(16)
#define MACHINE_FLAG_SCC	BIT(17)
#define MACHINE_FLAG_PCI_MIO	BIT(18)
#define MACHINE_FLAG_RDP	BIT(19)

#define LPP_MAGIC		BIT(31)
#define LPP_PID_MASK		_AC(0xffffffff, UL)

/* Offsets to entry points in kernel/head.S  */

#define STARTUP_NORMAL_OFFSET	0x10000
#define STARTUP_KDUMP_OFFSET	0x10010

#define LEGACY_COMMAND_LINE_SIZE	896

#ifndef __ASSEMBLY__

#include <asm/lowcore.h>
#include <asm/types.h>

struct parmarea {
	unsigned long ipl_device;			/* 0x10400 */
	unsigned long initrd_start;			/* 0x10408 */
	unsigned long initrd_size;			/* 0x10410 */
	unsigned long oldmem_base;			/* 0x10418 */
	unsigned long oldmem_size;			/* 0x10420 */
	unsigned long kernel_version;			/* 0x10428 */
	unsigned long max_command_line_size;		/* 0x10430 */
	char pad1[0x10480-0x10438];			/* 0x10438 - 0x10480 */
	char command_line[COMMAND_LINE_SIZE];		/* 0x10480 */
};

extern struct parmarea parmarea;

extern unsigned int zlib_dfltcc_support;
#define ZLIB_DFLTCC_DISABLED		0
#define ZLIB_DFLTCC_FULL		1
#define ZLIB_DFLTCC_DEFLATE_ONLY	2
#define ZLIB_DFLTCC_INFLATE_ONLY	3
#define ZLIB_DFLTCC_FULL_DEBUG		4

extern unsigned long ident_map_size;
extern unsigned long max_mappable;

/* The Write Back bit position in the physaddr is given by the SLPC PCI */
extern unsigned long mio_wb_bit_mask;

#define MACHINE_IS_VM		(S390_lowcore.machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM		(S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
#define MACHINE_IS_LPAR		(S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)

#define MACHINE_HAS_DIAG9C	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
#define MACHINE_HAS_ESOP	(S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
#define MACHINE_HAS_IDTE	(S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
#define MACHINE_HAS_EDAT1	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
#define MACHINE_HAS_EDAT2	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
#define MACHINE_HAS_TOPOLOGY	(S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
#define MACHINE_HAS_TE		(S390_lowcore.machine_flags & MACHINE_FLAG_TE)
#define MACHINE_HAS_TLB_LC	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
#define MACHINE_HAS_TLB_GUEST	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
#define MACHINE_HAS_NX		(S390_lowcore.machine_flags & MACHINE_FLAG_NX)
#define MACHINE_HAS_GS		(S390_lowcore.machine_flags & MACHINE_FLAG_GS)
#define MACHINE_HAS_SCC		(S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
#define MACHINE_HAS_PCI_MIO	(S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO)
#define MACHINE_HAS_RDP		(S390_lowcore.machine_flags & MACHINE_FLAG_RDP)

/*
 * Console mode. Override with conmode=
 */
extern unsigned int console_mode;
extern unsigned int console_devno;
extern unsigned int console_irq;

#define CONSOLE_IS_UNDEFINED	(console_mode == 0)
#define CONSOLE_IS_SCLP		(console_mode == 1)
#define CONSOLE_IS_3215		(console_mode == 2)
#define CONSOLE_IS_3270		(console_mode == 3)
#define CONSOLE_IS_VT220	(console_mode == 4)
#define CONSOLE_IS_HVC		(console_mode == 5)
#define SET_CONSOLE_SCLP	do { console_mode = 1; } while (0)
#define SET_CONSOLE_3215	do { console_mode = 2; } while (0)
#define SET_CONSOLE_3270	do { console_mode = 3; } while (0)
#define SET_CONSOLE_VT220	do { console_mode = 4; } while (0)
#define SET_CONSOLE_HVC		do { console_mode = 5; } while (0)

#ifdef CONFIG_VMCP
void vmcp_cma_reserve(void);
#else
static inline void vmcp_cma_reserve(void) { }
#endif

void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);

extern void (*_machine_restart)(char *command);
extern void (*_machine_halt)(void);
extern void (*_machine_power_off)(void);

struct oldmem_data {
	unsigned long start;
	unsigned long size;
};
extern struct oldmem_data oldmem_data;

static __always_inline u32 gen_lpswe(unsigned long addr)
{
	BUILD_BUG_ON(addr > 0xfff);
	return 0xb2b20000 | addr;
}
#endif /* __ASSEMBLY__ */
#endif /* _ASM_S390_SETUP_H */