1 /* SPDX-License-Identifier: GPL-2.0 */
4 * Copyright IBM Corp. 1999, 2017
6 #ifndef _ASM_S390_SETUP_H
7 #define _ASM_S390_SETUP_H
9 #include <linux/bits.h>
10 #include <uapi/asm/setup.h>
12 #define EP_OFFSET 0x10008
13 #define EP_STRING "S390EP"
14 #define PARMAREA 0x10400
15 #define EARLY_SCCB_OFFSET 0x11000
16 #define HEAD_END 0x12000
18 #define EARLY_SCCB_SIZE PAGE_SIZE
21 * Machine features detected in early.c
24 #define MACHINE_FLAG_VM BIT(0)
25 #define MACHINE_FLAG_KVM BIT(1)
26 #define MACHINE_FLAG_LPAR BIT(2)
27 #define MACHINE_FLAG_DIAG9C BIT(3)
28 #define MACHINE_FLAG_ESOP BIT(4)
29 #define MACHINE_FLAG_IDTE BIT(5)
30 #define MACHINE_FLAG_DIAG44 BIT(6)
31 #define MACHINE_FLAG_EDAT1 BIT(7)
32 #define MACHINE_FLAG_EDAT2 BIT(8)
33 #define MACHINE_FLAG_TOPOLOGY BIT(10)
34 #define MACHINE_FLAG_TE BIT(11)
35 #define MACHINE_FLAG_TLB_LC BIT(12)
36 #define MACHINE_FLAG_VX BIT(13)
37 #define MACHINE_FLAG_TLB_GUEST BIT(14)
38 #define MACHINE_FLAG_NX BIT(15)
39 #define MACHINE_FLAG_GS BIT(16)
40 #define MACHINE_FLAG_SCC BIT(17)
42 #define LPP_MAGIC BIT(31)
43 #define LPP_PID_MASK _AC(0xffffffff, UL)
45 /* Offsets to entry points in kernel/head.S */
47 #define STARTUP_NORMAL_OFFSET 0x10000
48 #define STARTUP_KDUMP_OFFSET 0x10010
50 /* Offsets to parameters in kernel/head.S */
52 #define IPL_DEVICE_OFFSET 0x10400
53 #define INITRD_START_OFFSET 0x10408
54 #define INITRD_SIZE_OFFSET 0x10410
55 #define OLDMEM_BASE_OFFSET 0x10418
56 #define OLDMEM_SIZE_OFFSET 0x10420
57 #define KERNEL_VERSION_OFFSET 0x10428
58 #define COMMAND_LINE_OFFSET 0x10480
62 #include <asm/lowcore.h>
63 #include <asm/types.h>
65 #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET))
66 #define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET))
67 #define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET))
68 #define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET))
69 #define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET))
70 #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET))
73 unsigned long ipl_device; /* 0x10400 */
74 unsigned long initrd_start; /* 0x10408 */
75 unsigned long initrd_size; /* 0x10410 */
76 unsigned long oldmem_base; /* 0x10418 */
77 unsigned long oldmem_size; /* 0x10420 */
78 unsigned long kernel_version; /* 0x10428 */
79 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */
80 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */
83 extern int noexec_disabled;
84 extern int memory_end_set;
85 extern unsigned long memory_end;
86 extern unsigned long max_physmem_end;
88 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
89 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
90 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
92 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
93 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
94 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
95 #define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
96 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
97 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
98 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
99 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
100 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
101 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
102 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
103 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
104 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
105 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
108 * Console mode. Override with conmode=
110 extern unsigned int console_mode;
111 extern unsigned int console_devno;
112 extern unsigned int console_irq;
114 extern char vmhalt_cmd[];
115 extern char vmpoff_cmd[];
117 #define CONSOLE_IS_UNDEFINED (console_mode == 0)
118 #define CONSOLE_IS_SCLP (console_mode == 1)
119 #define CONSOLE_IS_3215 (console_mode == 2)
120 #define CONSOLE_IS_3270 (console_mode == 3)
121 #define CONSOLE_IS_VT220 (console_mode == 4)
122 #define CONSOLE_IS_HVC (console_mode == 5)
123 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
124 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
125 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
126 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0)
127 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0)
130 extern int pfault_init(void);
131 extern void pfault_fini(void);
132 #else /* CONFIG_PFAULT */
133 #define pfault_init() ({-1;})
134 #define pfault_fini() do { } while (0)
135 #endif /* CONFIG_PFAULT */
138 void vmcp_cma_reserve(void);
140 static inline void vmcp_cma_reserve(void) { }
143 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
145 void cmma_init(void);
146 void cmma_init_nodat(void);
148 extern void (*_machine_restart)(char *command);
149 extern void (*_machine_halt)(void);
150 extern void (*_machine_power_off)(void);
152 extern unsigned long __kaslr_offset;
153 static inline unsigned long kaslr_offset(void)
155 return __kaslr_offset;
158 #else /* __ASSEMBLY__ */
160 #define IPL_DEVICE (IPL_DEVICE_OFFSET)
161 #define INITRD_START (INITRD_START_OFFSET)
162 #define INITRD_SIZE (INITRD_SIZE_OFFSET)
163 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET)
164 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET)
165 #define COMMAND_LINE (COMMAND_LINE_OFFSET)
167 #endif /* __ASSEMBLY__ */
168 #endif /* _ASM_S390_SETUP_H */