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/bits.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 BIT(0) 25 #define MACHINE_FLAG_KVM BIT(1) 26 #define MACHINE_FLAG_LPAR BIT(2) 27 #define MACHINE_FLAG_DIAG9C BIT(3) 28 #define MACHINE_FLAG_ESOP BIT(4) 29 #define MACHINE_FLAG_IDTE BIT(5) 30 #define MACHINE_FLAG_EDAT1 BIT(7) 31 #define MACHINE_FLAG_EDAT2 BIT(8) 32 #define MACHINE_FLAG_TOPOLOGY BIT(10) 33 #define MACHINE_FLAG_TE BIT(11) 34 #define MACHINE_FLAG_TLB_LC BIT(12) 35 #define MACHINE_FLAG_VX BIT(13) 36 #define MACHINE_FLAG_TLB_GUEST BIT(14) 37 #define MACHINE_FLAG_NX BIT(15) 38 #define MACHINE_FLAG_GS BIT(16) 39 #define MACHINE_FLAG_SCC BIT(17) 40 41 #define LPP_MAGIC BIT(31) 42 #define LPP_PID_MASK _AC(0xffffffff, UL) 43 44 /* Offsets to entry points in kernel/head.S */ 45 46 #define STARTUP_NORMAL_OFFSET 0x10000 47 #define STARTUP_KDUMP_OFFSET 0x10010 48 49 /* Offsets to parameters in kernel/head.S */ 50 51 #define IPL_DEVICE_OFFSET 0x10400 52 #define INITRD_START_OFFSET 0x10408 53 #define INITRD_SIZE_OFFSET 0x10410 54 #define OLDMEM_BASE_OFFSET 0x10418 55 #define OLDMEM_SIZE_OFFSET 0x10420 56 #define KERNEL_VERSION_OFFSET 0x10428 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 unsigned long kernel_version; /* 0x10428 */ 78 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */ 79 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */ 80 }; 81 82 extern int noexec_disabled; 83 extern int memory_end_set; 84 extern unsigned long memory_end; 85 extern unsigned long vmalloc_size; 86 extern unsigned long max_physmem_end; 87 extern unsigned long __swsusp_reset_dma; 88 89 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 90 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 91 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 92 93 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 94 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 95 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 96 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 97 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 98 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 99 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 100 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 101 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) 102 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 103 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 104 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 105 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 106 107 /* 108 * Console mode. Override with conmode= 109 */ 110 extern unsigned int console_mode; 111 extern unsigned int console_devno; 112 extern unsigned int console_irq; 113 114 extern char vmhalt_cmd[]; 115 extern char vmpoff_cmd[]; 116 117 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 118 #define CONSOLE_IS_SCLP (console_mode == 1) 119 #define CONSOLE_IS_3215 (console_mode == 2) 120 #define CONSOLE_IS_3270 (console_mode == 3) 121 #define CONSOLE_IS_VT220 (console_mode == 4) 122 #define CONSOLE_IS_HVC (console_mode == 5) 123 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 124 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 125 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 126 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 127 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 128 129 #ifdef CONFIG_PFAULT 130 extern int pfault_init(void); 131 extern void pfault_fini(void); 132 #else /* CONFIG_PFAULT */ 133 #define pfault_init() ({-1;}) 134 #define pfault_fini() do { } while (0) 135 #endif /* CONFIG_PFAULT */ 136 137 #ifdef CONFIG_VMCP 138 void vmcp_cma_reserve(void); 139 #else 140 static inline void vmcp_cma_reserve(void) { } 141 #endif 142 143 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 144 145 void cmma_init(void); 146 void cmma_init_nodat(void); 147 148 extern void (*_machine_restart)(char *command); 149 extern void (*_machine_halt)(void); 150 extern void (*_machine_power_off)(void); 151 152 extern unsigned long __kaslr_offset; 153 static inline unsigned long kaslr_offset(void) 154 { 155 return __kaslr_offset; 156 } 157 158 #else /* __ASSEMBLY__ */ 159 160 #define IPL_DEVICE (IPL_DEVICE_OFFSET) 161 #define INITRD_START (INITRD_START_OFFSET) 162 #define INITRD_SIZE (INITRD_SIZE_OFFSET) 163 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET) 164 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) 165 #define COMMAND_LINE (COMMAND_LINE_OFFSET) 166 167 #endif /* __ASSEMBLY__ */ 168 #endif /* _ASM_S390_SETUP_H */ 169