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/bits.h>
10 #include <uapi/asm/setup.h>
11 #include <linux/build_bug.h>
12
13 #define PARMAREA 0x10400
14
15 #define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE
16 /*
17 * Machine features detected in early.c
18 */
19
20 #define MACHINE_FLAG_VM BIT(0)
21 #define MACHINE_FLAG_KVM BIT(1)
22 #define MACHINE_FLAG_LPAR BIT(2)
23 #define MACHINE_FLAG_DIAG9C BIT(3)
24 #define MACHINE_FLAG_ESOP BIT(4)
25 #define MACHINE_FLAG_IDTE BIT(5)
26 #define MACHINE_FLAG_EDAT1 BIT(7)
27 #define MACHINE_FLAG_EDAT2 BIT(8)
28 #define MACHINE_FLAG_TOPOLOGY BIT(10)
29 #define MACHINE_FLAG_TE BIT(11)
30 #define MACHINE_FLAG_TLB_LC BIT(12)
31 #define MACHINE_FLAG_TLB_GUEST BIT(14)
32 #define MACHINE_FLAG_NX BIT(15)
33 #define MACHINE_FLAG_GS BIT(16)
34 #define MACHINE_FLAG_SCC BIT(17)
35 #define MACHINE_FLAG_PCI_MIO BIT(18)
36 #define MACHINE_FLAG_RDP BIT(19)
37
38 #define LPP_MAGIC BIT(31)
39 #define LPP_PID_MASK _AC(0xffffffff, UL)
40
41 /* Offsets to entry points in kernel/head.S */
42
43 #define STARTUP_NORMAL_OFFSET 0x10000
44 #define STARTUP_KDUMP_OFFSET 0x10010
45
46 #define LEGACY_COMMAND_LINE_SIZE 896
47
48 #ifndef __ASSEMBLY__
49
50 #include <asm/lowcore.h>
51 #include <asm/types.h>
52
53 struct parmarea {
54 unsigned long ipl_device; /* 0x10400 */
55 unsigned long initrd_start; /* 0x10408 */
56 unsigned long initrd_size; /* 0x10410 */
57 unsigned long oldmem_base; /* 0x10418 */
58 unsigned long oldmem_size; /* 0x10420 */
59 unsigned long kernel_version; /* 0x10428 */
60 unsigned long max_command_line_size; /* 0x10430 */
61 char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */
62 char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */
63 };
64
65 extern struct parmarea parmarea;
66
67 extern unsigned int zlib_dfltcc_support;
68 #define ZLIB_DFLTCC_DISABLED 0
69 #define ZLIB_DFLTCC_FULL 1
70 #define ZLIB_DFLTCC_DEFLATE_ONLY 2
71 #define ZLIB_DFLTCC_INFLATE_ONLY 3
72 #define ZLIB_DFLTCC_FULL_DEBUG 4
73
74 extern unsigned long ident_map_size;
75 extern unsigned long max_mappable;
76
77 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
78 extern unsigned long mio_wb_bit_mask;
79
80 #define MACHINE_IS_VM (get_lowcore()->machine_flags & MACHINE_FLAG_VM)
81 #define MACHINE_IS_KVM (get_lowcore()->machine_flags & MACHINE_FLAG_KVM)
82 #define MACHINE_IS_LPAR (get_lowcore()->machine_flags & MACHINE_FLAG_LPAR)
83
84 #define MACHINE_HAS_DIAG9C (get_lowcore()->machine_flags & MACHINE_FLAG_DIAG9C)
85 #define MACHINE_HAS_ESOP (get_lowcore()->machine_flags & MACHINE_FLAG_ESOP)
86 #define MACHINE_HAS_IDTE (get_lowcore()->machine_flags & MACHINE_FLAG_IDTE)
87 #define MACHINE_HAS_EDAT1 (get_lowcore()->machine_flags & MACHINE_FLAG_EDAT1)
88 #define MACHINE_HAS_EDAT2 (get_lowcore()->machine_flags & MACHINE_FLAG_EDAT2)
89 #define MACHINE_HAS_TOPOLOGY (get_lowcore()->machine_flags & MACHINE_FLAG_TOPOLOGY)
90 #define MACHINE_HAS_TE (get_lowcore()->machine_flags & MACHINE_FLAG_TE)
91 #define MACHINE_HAS_TLB_LC (get_lowcore()->machine_flags & MACHINE_FLAG_TLB_LC)
92 #define MACHINE_HAS_TLB_GUEST (get_lowcore()->machine_flags & MACHINE_FLAG_TLB_GUEST)
93 #define MACHINE_HAS_NX (get_lowcore()->machine_flags & MACHINE_FLAG_NX)
94 #define MACHINE_HAS_GS (get_lowcore()->machine_flags & MACHINE_FLAG_GS)
95 #define MACHINE_HAS_SCC (get_lowcore()->machine_flags & MACHINE_FLAG_SCC)
96 #define MACHINE_HAS_PCI_MIO (get_lowcore()->machine_flags & MACHINE_FLAG_PCI_MIO)
97 #define MACHINE_HAS_RDP (get_lowcore()->machine_flags & MACHINE_FLAG_RDP)
98
99 /*
100 * Console mode. Override with conmode=
101 */
102 extern unsigned int console_mode;
103 extern unsigned int console_devno;
104 extern unsigned int console_irq;
105
106 #define CONSOLE_IS_UNDEFINED (console_mode == 0)
107 #define CONSOLE_IS_SCLP (console_mode == 1)
108 #define CONSOLE_IS_3215 (console_mode == 2)
109 #define CONSOLE_IS_3270 (console_mode == 3)
110 #define CONSOLE_IS_VT220 (console_mode == 4)
111 #define CONSOLE_IS_HVC (console_mode == 5)
112 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
113 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
114 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
115 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0)
116 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0)
117
118 #ifdef CONFIG_VMCP
119 void vmcp_cma_reserve(void);
120 #else
121 static inline void vmcp_cma_reserve(void) { }
122 #endif
123
124 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
125
126 extern void (*_machine_restart)(char *command);
127 extern void (*_machine_halt)(void);
128 extern void (*_machine_power_off)(void);
129
130 struct oldmem_data {
131 unsigned long start;
132 unsigned long size;
133 };
134 extern struct oldmem_data oldmem_data;
135
136 static __always_inline u32 gen_lpswe(unsigned long addr)
137 {
138 BUILD_BUG_ON(addr > 0xfff);
139 return 0xb2b20000 | addr;
140 }
141 #endif /* __ASSEMBLY__ */
142 #endif /* _ASM_S390_SETUP_H */
143
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