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 #include <linux/build_bug.h> 12 13 #define EP_OFFSET 0x10008 14 #define EP_STRING "S390EP" 15 #define PARMAREA 0x10400 16 #define EARLY_SCCB_OFFSET 0x11000 17 #define HEAD_END 0x12000 18 19 #define EARLY_SCCB_SIZE PAGE_SIZE 20 21 /* 22 * Machine features detected in early.c 23 */ 24 25 #define MACHINE_FLAG_VM BIT(0) 26 #define MACHINE_FLAG_KVM BIT(1) 27 #define MACHINE_FLAG_LPAR BIT(2) 28 #define MACHINE_FLAG_DIAG9C BIT(3) 29 #define MACHINE_FLAG_ESOP BIT(4) 30 #define MACHINE_FLAG_IDTE BIT(5) 31 #define MACHINE_FLAG_EDAT1 BIT(7) 32 #define MACHINE_FLAG_EDAT2 BIT(8) 33 #define MACHINE_FLAG_TOPOLOGY BIT(10) 34 #define MACHINE_FLAG_TE BIT(11) 35 #define MACHINE_FLAG_TLB_LC BIT(12) 36 #define MACHINE_FLAG_VX BIT(13) 37 #define MACHINE_FLAG_TLB_GUEST BIT(14) 38 #define MACHINE_FLAG_NX BIT(15) 39 #define MACHINE_FLAG_GS BIT(16) 40 #define MACHINE_FLAG_SCC BIT(17) 41 42 #define LPP_MAGIC BIT(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 KERNEL_VERSION_OFFSET 0x10428 58 #define COMMAND_LINE_OFFSET 0x10480 59 60 #ifndef __ASSEMBLY__ 61 62 #include <asm/lowcore.h> 63 #include <asm/types.h> 64 65 #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) 66 #define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET)) 67 #define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET)) 68 #define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) 69 #define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) 70 #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) 71 72 struct parmarea { 73 unsigned long ipl_device; /* 0x10400 */ 74 unsigned long initrd_start; /* 0x10408 */ 75 unsigned long initrd_size; /* 0x10410 */ 76 unsigned long oldmem_base; /* 0x10418 */ 77 unsigned long oldmem_size; /* 0x10420 */ 78 unsigned long kernel_version; /* 0x10428 */ 79 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */ 80 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */ 81 }; 82 83 extern unsigned int zlib_dfltcc_support; 84 #define ZLIB_DFLTCC_DISABLED 0 85 #define ZLIB_DFLTCC_FULL 1 86 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 87 #define ZLIB_DFLTCC_INFLATE_ONLY 3 88 #define ZLIB_DFLTCC_FULL_DEBUG 4 89 90 extern int noexec_disabled; 91 extern int memory_end_set; 92 extern unsigned long memory_end; 93 extern unsigned long vmalloc_size; 94 extern unsigned long max_physmem_end; 95 extern unsigned long __swsusp_reset_dma; 96 97 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 98 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 99 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 100 101 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 102 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 103 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 104 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 105 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 106 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 107 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 108 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 109 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) 110 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 111 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 112 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 113 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 114 115 /* 116 * Console mode. Override with conmode= 117 */ 118 extern unsigned int console_mode; 119 extern unsigned int console_devno; 120 extern unsigned int console_irq; 121 122 extern char vmhalt_cmd[]; 123 extern char vmpoff_cmd[]; 124 125 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 126 #define CONSOLE_IS_SCLP (console_mode == 1) 127 #define CONSOLE_IS_3215 (console_mode == 2) 128 #define CONSOLE_IS_3270 (console_mode == 3) 129 #define CONSOLE_IS_VT220 (console_mode == 4) 130 #define CONSOLE_IS_HVC (console_mode == 5) 131 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 132 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 133 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 134 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 135 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 136 137 #ifdef CONFIG_PFAULT 138 extern int pfault_init(void); 139 extern void pfault_fini(void); 140 #else /* CONFIG_PFAULT */ 141 #define pfault_init() ({-1;}) 142 #define pfault_fini() do { } while (0) 143 #endif /* CONFIG_PFAULT */ 144 145 #ifdef CONFIG_VMCP 146 void vmcp_cma_reserve(void); 147 #else 148 static inline void vmcp_cma_reserve(void) { } 149 #endif 150 151 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 152 153 void cmma_init(void); 154 void cmma_init_nodat(void); 155 156 extern void (*_machine_restart)(char *command); 157 extern void (*_machine_halt)(void); 158 extern void (*_machine_power_off)(void); 159 160 extern unsigned long __kaslr_offset; 161 static inline unsigned long kaslr_offset(void) 162 { 163 return __kaslr_offset; 164 } 165 166 static inline u32 gen_lpswe(unsigned long addr) 167 { 168 BUILD_BUG_ON(addr > 0xfff); 169 return 0xb2b20000 | addr; 170 } 171 172 #else /* __ASSEMBLY__ */ 173 174 #define IPL_DEVICE (IPL_DEVICE_OFFSET) 175 #define INITRD_START (INITRD_START_OFFSET) 176 #define INITRD_SIZE (INITRD_SIZE_OFFSET) 177 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET) 178 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) 179 #define COMMAND_LINE (COMMAND_LINE_OFFSET) 180 181 #endif /* __ASSEMBLY__ */ 182 #endif /* _ASM_S390_SETUP_H */ 183