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 13 #define PARMAREA 0x10400 14 15 /* 16 * Machine features detected in early.c 17 */ 18 19 #define MACHINE_FLAG_VM _BITUL(0) 20 #define MACHINE_FLAG_KVM _BITUL(1) 21 #define MACHINE_FLAG_LPAR _BITUL(2) 22 #define MACHINE_FLAG_DIAG9C _BITUL(3) 23 #define MACHINE_FLAG_ESOP _BITUL(4) 24 #define MACHINE_FLAG_IDTE _BITUL(5) 25 #define MACHINE_FLAG_DIAG44 _BITUL(6) 26 #define MACHINE_FLAG_EDAT1 _BITUL(7) 27 #define MACHINE_FLAG_EDAT2 _BITUL(8) 28 #define MACHINE_FLAG_TOPOLOGY _BITUL(10) 29 #define MACHINE_FLAG_TE _BITUL(11) 30 #define MACHINE_FLAG_TLB_LC _BITUL(12) 31 #define MACHINE_FLAG_VX _BITUL(13) 32 #define MACHINE_FLAG_TLB_GUEST _BITUL(14) 33 #define MACHINE_FLAG_NX _BITUL(15) 34 #define MACHINE_FLAG_GS _BITUL(16) 35 #define MACHINE_FLAG_SCC _BITUL(17) 36 37 #define LPP_MAGIC _BITUL(31) 38 #define LPP_PID_MASK _AC(0xffffffff, UL) 39 40 /* Offsets to entry points in kernel/head.S */ 41 42 #define STARTUP_NORMAL_OFFSET 0x10000 43 #define STARTUP_KDUMP_OFFSET 0x10010 44 45 /* Offsets to parameters in kernel/head.S */ 46 47 #define IPL_DEVICE_OFFSET 0x10400 48 #define INITRD_START_OFFSET 0x10408 49 #define INITRD_SIZE_OFFSET 0x10410 50 #define OLDMEM_BASE_OFFSET 0x10418 51 #define OLDMEM_SIZE_OFFSET 0x10420 52 #define COMMAND_LINE_OFFSET 0x10480 53 54 #ifndef __ASSEMBLY__ 55 56 #include <asm/lowcore.h> 57 #include <asm/types.h> 58 59 #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) 60 #define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET)) 61 #define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET)) 62 #define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) 63 #define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) 64 #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) 65 66 extern int memory_end_set; 67 extern unsigned long memory_end; 68 extern unsigned long max_physmem_end; 69 70 extern void detect_memory_memblock(void); 71 72 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 73 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 74 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 75 76 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 77 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 78 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 79 #define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44) 80 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 81 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 82 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 83 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 84 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 85 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) 86 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 87 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 88 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 89 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 90 91 /* 92 * Console mode. Override with conmode= 93 */ 94 extern unsigned int console_mode; 95 extern unsigned int console_devno; 96 extern unsigned int console_irq; 97 98 extern char vmhalt_cmd[]; 99 extern char vmpoff_cmd[]; 100 101 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 102 #define CONSOLE_IS_SCLP (console_mode == 1) 103 #define CONSOLE_IS_3215 (console_mode == 2) 104 #define CONSOLE_IS_3270 (console_mode == 3) 105 #define CONSOLE_IS_VT220 (console_mode == 4) 106 #define CONSOLE_IS_HVC (console_mode == 5) 107 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 108 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 109 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 110 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 111 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 112 113 #ifdef CONFIG_PFAULT 114 extern int pfault_init(void); 115 extern void pfault_fini(void); 116 #else /* CONFIG_PFAULT */ 117 #define pfault_init() ({-1;}) 118 #define pfault_fini() do { } while (0) 119 #endif /* CONFIG_PFAULT */ 120 121 #ifdef CONFIG_VMCP 122 void vmcp_cma_reserve(void); 123 #else 124 static inline void vmcp_cma_reserve(void) { } 125 #endif 126 127 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 128 129 void cmma_init(void); 130 void cmma_init_nodat(void); 131 132 extern void (*_machine_restart)(char *command); 133 extern void (*_machine_halt)(void); 134 extern void (*_machine_power_off)(void); 135 136 #else /* __ASSEMBLY__ */ 137 138 #define IPL_DEVICE (IPL_DEVICE_OFFSET) 139 #define INITRD_START (INITRD_START_OFFSET) 140 #define INITRD_SIZE (INITRD_SIZE_OFFSET) 141 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET) 142 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) 143 #define COMMAND_LINE (COMMAND_LINE_OFFSET) 144 145 #endif /* __ASSEMBLY__ */ 146 #endif /* _ASM_S390_SETUP_H */ 147