1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * S390 version 4 * Copyright IBM Corp. 1999, 2017 5 */ 6 #ifndef _ASM_S390_SETUP_H 7 #define _ASM_S390_SETUP_H 8 9 #include <linux/const.h> 10 #include <uapi/asm/setup.h> 11 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 17 18 #define EARLY_SCCB_SIZE PAGE_SIZE 19 20 /* 21 * Machine features detected in early.c 22 */ 23 24 #define MACHINE_FLAG_VM _BITUL(0) 25 #define MACHINE_FLAG_KVM _BITUL(1) 26 #define MACHINE_FLAG_LPAR _BITUL(2) 27 #define MACHINE_FLAG_DIAG9C _BITUL(3) 28 #define MACHINE_FLAG_ESOP _BITUL(4) 29 #define MACHINE_FLAG_IDTE _BITUL(5) 30 #define MACHINE_FLAG_DIAG44 _BITUL(6) 31 #define MACHINE_FLAG_EDAT1 _BITUL(7) 32 #define MACHINE_FLAG_EDAT2 _BITUL(8) 33 #define MACHINE_FLAG_TOPOLOGY _BITUL(10) 34 #define MACHINE_FLAG_TE _BITUL(11) 35 #define MACHINE_FLAG_TLB_LC _BITUL(12) 36 #define MACHINE_FLAG_VX _BITUL(13) 37 #define MACHINE_FLAG_TLB_GUEST _BITUL(14) 38 #define MACHINE_FLAG_NX _BITUL(15) 39 #define MACHINE_FLAG_GS _BITUL(16) 40 #define MACHINE_FLAG_SCC _BITUL(17) 41 42 #define LPP_MAGIC _BITUL(31) 43 #define LPP_PID_MASK _AC(0xffffffff, UL) 44 45 /* Offsets to entry points in kernel/head.S */ 46 47 #define STARTUP_NORMAL_OFFSET 0x10000 48 #define STARTUP_KDUMP_OFFSET 0x10010 49 50 /* Offsets to parameters in kernel/head.S */ 51 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 COMMAND_LINE_OFFSET 0x10480 58 59 #ifndef __ASSEMBLY__ 60 61 #include <asm/lowcore.h> 62 #include <asm/types.h> 63 64 #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) 65 #define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET)) 66 #define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET)) 67 #define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) 68 #define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) 69 #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) 70 71 struct parmarea { 72 unsigned long ipl_device; /* 0x10400 */ 73 unsigned long initrd_start; /* 0x10408 */ 74 unsigned long initrd_size; /* 0x10410 */ 75 unsigned long oldmem_base; /* 0x10418 */ 76 unsigned long oldmem_size; /* 0x10420 */ 77 char pad1[0x10480 - 0x10428]; /* 0x10428 - 0x10480 */ 78 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */ 79 }; 80 81 extern int noexec_disabled; 82 extern int memory_end_set; 83 extern unsigned long memory_end; 84 extern unsigned long max_physmem_end; 85 86 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 87 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 88 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 89 90 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 91 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 92 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 93 #define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44) 94 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 95 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 96 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 97 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 98 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 99 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) 100 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 101 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 102 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 103 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 104 105 /* 106 * Console mode. Override with conmode= 107 */ 108 extern unsigned int console_mode; 109 extern unsigned int console_devno; 110 extern unsigned int console_irq; 111 112 extern char vmhalt_cmd[]; 113 extern char vmpoff_cmd[]; 114 115 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 116 #define CONSOLE_IS_SCLP (console_mode == 1) 117 #define CONSOLE_IS_3215 (console_mode == 2) 118 #define CONSOLE_IS_3270 (console_mode == 3) 119 #define CONSOLE_IS_VT220 (console_mode == 4) 120 #define CONSOLE_IS_HVC (console_mode == 5) 121 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 122 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 123 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 124 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 125 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 126 127 #ifdef CONFIG_PFAULT 128 extern int pfault_init(void); 129 extern void pfault_fini(void); 130 #else /* CONFIG_PFAULT */ 131 #define pfault_init() ({-1;}) 132 #define pfault_fini() do { } while (0) 133 #endif /* CONFIG_PFAULT */ 134 135 #ifdef CONFIG_VMCP 136 void vmcp_cma_reserve(void); 137 #else 138 static inline void vmcp_cma_reserve(void) { } 139 #endif 140 141 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 142 143 void cmma_init(void); 144 void cmma_init_nodat(void); 145 146 extern void (*_machine_restart)(char *command); 147 extern void (*_machine_halt)(void); 148 extern void (*_machine_power_off)(void); 149 150 extern unsigned long __kaslr_offset; 151 static inline unsigned long kaslr_offset(void) 152 { 153 return __kaslr_offset; 154 } 155 156 #else /* __ASSEMBLY__ */ 157 158 #define IPL_DEVICE (IPL_DEVICE_OFFSET) 159 #define INITRD_START (INITRD_START_OFFSET) 160 #define INITRD_SIZE (INITRD_SIZE_OFFSET) 161 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET) 162 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) 163 #define COMMAND_LINE (COMMAND_LINE_OFFSET) 164 165 #endif /* __ASSEMBLY__ */ 166 #endif /* _ASM_S390_SETUP_H */ 167