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/const.h>
10 #include <uapi/asm/setup.h>
12 #define EP_OFFSET 0x10008
13 #define EP_STRING "S390EP"
14 #define PARMAREA 0x10400
15 #define PARMAREA_END 0x11000
18 * Machine features detected in early.c
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)
39 #define LPP_MAGIC _BITUL(31)
40 #define LPP_PID_MASK _AC(0xffffffff, UL)
42 /* Offsets to entry points in kernel/head.S */
44 #define STARTUP_NORMAL_OFFSET 0x10000
45 #define STARTUP_KDUMP_OFFSET 0x10010
47 /* Offsets to parameters in kernel/head.S */
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
58 #include <asm/lowcore.h>
59 #include <asm/types.h>
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))
68 extern int memory_end_set;
69 extern unsigned long memory_end;
70 extern unsigned long max_physmem_end;
72 extern void detect_memory_memblock(void);
74 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
75 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
76 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
78 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
79 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
80 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
81 #define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
82 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
83 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
84 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
85 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
86 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
87 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
88 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
89 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
90 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
91 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
94 * Console mode. Override with conmode=
96 extern unsigned int console_mode;
97 extern unsigned int console_devno;
98 extern unsigned int console_irq;
100 extern char vmhalt_cmd[];
101 extern char vmpoff_cmd[];
103 #define CONSOLE_IS_UNDEFINED (console_mode == 0)
104 #define CONSOLE_IS_SCLP (console_mode == 1)
105 #define CONSOLE_IS_3215 (console_mode == 2)
106 #define CONSOLE_IS_3270 (console_mode == 3)
107 #define CONSOLE_IS_VT220 (console_mode == 4)
108 #define CONSOLE_IS_HVC (console_mode == 5)
109 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
110 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
111 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
112 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0)
113 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0)
116 extern int pfault_init(void);
117 extern void pfault_fini(void);
118 #else /* CONFIG_PFAULT */
119 #define pfault_init() ({-1;})
120 #define pfault_fini() do { } while (0)
121 #endif /* CONFIG_PFAULT */
124 void vmcp_cma_reserve(void);
126 static inline void vmcp_cma_reserve(void) { }
129 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
131 void cmma_init(void);
132 void cmma_init_nodat(void);
134 extern void (*_machine_restart)(char *command);
135 extern void (*_machine_halt)(void);
136 extern void (*_machine_power_off)(void);
138 #else /* __ASSEMBLY__ */
140 #define IPL_DEVICE (IPL_DEVICE_OFFSET)
141 #define INITRD_START (INITRD_START_OFFSET)
142 #define INITRD_SIZE (INITRD_SIZE_OFFSET)
143 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET)
144 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET)
145 #define COMMAND_LINE (COMMAND_LINE_OFFSET)
147 #endif /* __ASSEMBLY__ */
148 #endif /* _ASM_S390_SETUP_H */