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 HEAD_END 0x11000
19 * Machine features detected in early.c
22 #define MACHINE_FLAG_VM BIT(0)
23 #define MACHINE_FLAG_KVM BIT(1)
24 #define MACHINE_FLAG_LPAR BIT(2)
25 #define MACHINE_FLAG_DIAG9C BIT(3)
26 #define MACHINE_FLAG_ESOP BIT(4)
27 #define MACHINE_FLAG_IDTE BIT(5)
28 #define MACHINE_FLAG_EDAT1 BIT(7)
29 #define MACHINE_FLAG_EDAT2 BIT(8)
30 #define MACHINE_FLAG_TOPOLOGY BIT(10)
31 #define MACHINE_FLAG_TE BIT(11)
32 #define MACHINE_FLAG_TLB_LC BIT(12)
33 #define MACHINE_FLAG_VX BIT(13)
34 #define MACHINE_FLAG_TLB_GUEST BIT(14)
35 #define MACHINE_FLAG_NX BIT(15)
36 #define MACHINE_FLAG_GS BIT(16)
37 #define MACHINE_FLAG_SCC BIT(17)
39 #define LPP_MAGIC BIT(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 KERNEL_VERSION_OFFSET 0x10428
55 #define COMMAND_LINE_OFFSET 0x10480
59 #include <asm/lowcore.h>
60 #include <asm/types.h>
62 #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET))
63 #define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET))
64 #define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET))
65 #define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET))
66 #define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET))
67 #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET))
70 unsigned long ipl_device; /* 0x10400 */
71 unsigned long initrd_start; /* 0x10408 */
72 unsigned long initrd_size; /* 0x10410 */
73 unsigned long oldmem_base; /* 0x10418 */
74 unsigned long oldmem_size; /* 0x10420 */
75 unsigned long kernel_version; /* 0x10428 */
76 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */
77 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */
80 extern struct parmarea parmarea;
82 extern unsigned int zlib_dfltcc_support;
83 #define ZLIB_DFLTCC_DISABLED 0
84 #define ZLIB_DFLTCC_FULL 1
85 #define ZLIB_DFLTCC_DEFLATE_ONLY 2
86 #define ZLIB_DFLTCC_INFLATE_ONLY 3
87 #define ZLIB_DFLTCC_FULL_DEBUG 4
89 extern int noexec_disabled;
90 extern unsigned long ident_map_size;
92 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
93 extern unsigned long mio_wb_bit_mask;
95 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
96 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
97 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
99 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
100 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
101 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
102 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
103 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
104 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
105 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
106 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
107 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
108 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
109 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
110 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
111 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
114 * Console mode. Override with conmode=
116 extern unsigned int console_mode;
117 extern unsigned int console_devno;
118 extern unsigned int console_irq;
120 #define CONSOLE_IS_UNDEFINED (console_mode == 0)
121 #define CONSOLE_IS_SCLP (console_mode == 1)
122 #define CONSOLE_IS_3215 (console_mode == 2)
123 #define CONSOLE_IS_3270 (console_mode == 3)
124 #define CONSOLE_IS_VT220 (console_mode == 4)
125 #define CONSOLE_IS_HVC (console_mode == 5)
126 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0)
127 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
128 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
129 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0)
130 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0)
133 extern int pfault_init(void);
134 extern void pfault_fini(void);
135 #else /* CONFIG_PFAULT */
136 #define pfault_init() ({-1;})
137 #define pfault_fini() do { } while (0)
138 #endif /* CONFIG_PFAULT */
141 void vmcp_cma_reserve(void);
143 static inline void vmcp_cma_reserve(void) { }
146 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
148 void cmma_init(void);
149 void cmma_init_nodat(void);
151 extern void (*_machine_restart)(char *command);
152 extern void (*_machine_halt)(void);
153 extern void (*_machine_power_off)(void);
155 extern unsigned long __kaslr_offset;
156 static inline unsigned long kaslr_offset(void)
158 return __kaslr_offset;
161 extern int is_full_image;
163 static inline u32 gen_lpswe(unsigned long addr)
165 BUILD_BUG_ON(addr > 0xfff);
166 return 0xb2b20000 | addr;
169 #else /* __ASSEMBLY__ */
171 #define IPL_DEVICE (IPL_DEVICE_OFFSET)
172 #define INITRD_START (INITRD_START_OFFSET)
173 #define INITRD_SIZE (INITRD_SIZE_OFFSET)
174 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET)
175 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET)
176 #define COMMAND_LINE (COMMAND_LINE_OFFSET)
178 #endif /* __ASSEMBLY__ */
179 #endif /* _ASM_S390_SETUP_H */