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 PARMAREA 0x10400
14 #define HEAD_END 0x11000
17 * Machine features detected in early.c
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_VX BIT(13)
32 #define MACHINE_FLAG_TLB_GUEST BIT(14)
33 #define MACHINE_FLAG_NX BIT(15)
34 #define MACHINE_FLAG_GS BIT(16)
35 #define MACHINE_FLAG_SCC BIT(17)
36 #define MACHINE_FLAG_PCI_MIO BIT(18)
38 #define LPP_MAGIC BIT(31)
39 #define LPP_PID_MASK _AC(0xffffffff, UL)
41 /* Offsets to entry points in kernel/head.S */
43 #define STARTUP_NORMAL_OFFSET 0x10000
44 #define STARTUP_KDUMP_OFFSET 0x10010
48 #include <asm/lowcore.h>
49 #include <asm/types.h>
52 unsigned long ipl_device; /* 0x10400 */
53 unsigned long initrd_start; /* 0x10408 */
54 unsigned long initrd_size; /* 0x10410 */
55 unsigned long oldmem_base; /* 0x10418 */
56 unsigned long oldmem_size; /* 0x10420 */
57 unsigned long kernel_version; /* 0x10428 */
58 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */
59 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */
62 extern struct parmarea parmarea;
64 extern unsigned int zlib_dfltcc_support;
65 #define ZLIB_DFLTCC_DISABLED 0
66 #define ZLIB_DFLTCC_FULL 1
67 #define ZLIB_DFLTCC_DEFLATE_ONLY 2
68 #define ZLIB_DFLTCC_INFLATE_ONLY 3
69 #define ZLIB_DFLTCC_FULL_DEBUG 4
71 extern int noexec_disabled;
72 extern unsigned long ident_map_size;
74 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
75 extern unsigned long mio_wb_bit_mask;
77 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
78 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
79 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
81 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
82 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
83 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
84 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
85 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
86 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
87 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
88 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
89 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
90 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
91 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
92 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
93 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
94 #define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO)
97 * Console mode. Override with conmode=
99 extern unsigned int console_mode;
100 extern unsigned int console_devno;
101 extern unsigned int console_irq;
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 extern unsigned long __kaslr_offset;
139 static inline unsigned long kaslr_offset(void)
141 return __kaslr_offset;
144 extern int is_full_image;
150 extern struct initrd_data initrd_data;
156 extern struct oldmem_data oldmem_data;
158 static inline u32 gen_lpswe(unsigned long addr)
160 BUILD_BUG_ON(addr > 0xfff);
161 return 0xb2b20000 | addr;
163 #endif /* __ASSEMBLY__ */
164 #endif /* _ASM_S390_SETUP_H */