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>
11 #include <linux/build_bug.h>
13 #define EP_OFFSET 0x10008
14 #define EP_STRING "S390EP"
15 #define PARMAREA 0x10400
16 #define EARLY_SCCB_OFFSET 0x11000
17 #define HEAD_END 0x12000
20 * Machine features detected in early.c
23 #define MACHINE_FLAG_VM BIT(0)
24 #define MACHINE_FLAG_KVM BIT(1)
25 #define MACHINE_FLAG_LPAR BIT(2)
26 #define MACHINE_FLAG_DIAG9C BIT(3)
27 #define MACHINE_FLAG_ESOP BIT(4)
28 #define MACHINE_FLAG_IDTE BIT(5)
29 #define MACHINE_FLAG_EDAT1 BIT(7)
30 #define MACHINE_FLAG_EDAT2 BIT(8)
31 #define MACHINE_FLAG_TOPOLOGY BIT(10)
32 #define MACHINE_FLAG_TE BIT(11)
33 #define MACHINE_FLAG_TLB_LC BIT(12)
34 #define MACHINE_FLAG_VX BIT(13)
35 #define MACHINE_FLAG_TLB_GUEST BIT(14)
36 #define MACHINE_FLAG_NX BIT(15)
37 #define MACHINE_FLAG_GS BIT(16)
38 #define MACHINE_FLAG_SCC BIT(17)
40 #define LPP_MAGIC BIT(31)
41 #define LPP_PID_MASK _AC(0xffffffff, UL)
43 /* Offsets to entry points in kernel/head.S */
45 #define STARTUP_NORMAL_OFFSET 0x10000
46 #define STARTUP_KDUMP_OFFSET 0x10010
48 /* Offsets to parameters in kernel/head.S */
50 #define IPL_DEVICE_OFFSET 0x10400
51 #define INITRD_START_OFFSET 0x10408
52 #define INITRD_SIZE_OFFSET 0x10410
53 #define OLDMEM_BASE_OFFSET 0x10418
54 #define OLDMEM_SIZE_OFFSET 0x10420
55 #define KERNEL_VERSION_OFFSET 0x10428
56 #define COMMAND_LINE_OFFSET 0x10480
60 #include <asm/lowcore.h>
61 #include <asm/types.h>
63 #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET))
64 #define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET))
65 #define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET))
66 #define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET))
67 #define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET))
68 #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET))
71 unsigned long ipl_device; /* 0x10400 */
72 unsigned long initrd_start; /* 0x10408 */
73 unsigned long initrd_size; /* 0x10410 */
74 unsigned long oldmem_base; /* 0x10418 */
75 unsigned long oldmem_size; /* 0x10420 */
76 unsigned long kernel_version; /* 0x10428 */
77 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */
78 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */
81 extern struct parmarea parmarea;
83 extern unsigned int zlib_dfltcc_support;
84 #define ZLIB_DFLTCC_DISABLED 0
85 #define ZLIB_DFLTCC_FULL 1
86 #define ZLIB_DFLTCC_DEFLATE_ONLY 2
87 #define ZLIB_DFLTCC_INFLATE_ONLY 3
88 #define ZLIB_DFLTCC_FULL_DEBUG 4
90 extern int noexec_disabled;
91 extern unsigned long ident_map_size;
93 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
94 extern unsigned long mio_wb_bit_mask;
96 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
97 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
98 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
100 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
101 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
102 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
103 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
104 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
105 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
106 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
107 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
108 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
109 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
110 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
111 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
112 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
115 * Console mode. Override with conmode=
117 extern unsigned int console_mode;
118 extern unsigned int console_devno;
119 extern unsigned int console_irq;
121 #define CONSOLE_IS_UNDEFINED (console_mode == 0)
122 #define CONSOLE_IS_SCLP (console_mode == 1)
123 #define CONSOLE_IS_3215 (console_mode == 2)
124 #define CONSOLE_IS_3270 (console_mode == 3)
125 #define CONSOLE_IS_VT220 (console_mode == 4)
126 #define CONSOLE_IS_HVC (console_mode == 5)
127 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
128 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
129 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
130 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0)
131 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0)
134 extern int pfault_init(void);
135 extern void pfault_fini(void);
136 #else /* CONFIG_PFAULT */
137 #define pfault_init() ({-1;})
138 #define pfault_fini() do { } while (0)
139 #endif /* CONFIG_PFAULT */
142 void vmcp_cma_reserve(void);
144 static inline void vmcp_cma_reserve(void) { }
147 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
149 void cmma_init(void);
150 void cmma_init_nodat(void);
152 extern void (*_machine_restart)(char *command);
153 extern void (*_machine_halt)(void);
154 extern void (*_machine_power_off)(void);
156 extern unsigned long __kaslr_offset;
157 static inline unsigned long kaslr_offset(void)
159 return __kaslr_offset;
162 extern int is_full_image;
164 static inline u32 gen_lpswe(unsigned long addr)
166 BUILD_BUG_ON(addr > 0xfff);
167 return 0xb2b20000 | addr;
170 #else /* __ASSEMBLY__ */
172 #define IPL_DEVICE (IPL_DEVICE_OFFSET)
173 #define INITRD_START (INITRD_START_OFFSET)
174 #define INITRD_SIZE (INITRD_SIZE_OFFSET)
175 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET)
176 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET)
177 #define COMMAND_LINE (COMMAND_LINE_OFFSET)
179 #endif /* __ASSEMBLY__ */
180 #endif /* _ASM_S390_SETUP_H */