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 #define MACHINE_FLAG_PCI_MIO BIT(18) 42 43 #define LPP_MAGIC BIT(31) 44 #define LPP_PID_MASK _AC(0xffffffff, UL) 45 46 /* Offsets to entry points in kernel/head.S */ 47 48 #define STARTUP_NORMAL_OFFSET 0x10000 49 #define STARTUP_KDUMP_OFFSET 0x10010 50 51 /* Offsets to parameters in kernel/head.S */ 52 53 #define IPL_DEVICE_OFFSET 0x10400 54 #define INITRD_START_OFFSET 0x10408 55 #define INITRD_SIZE_OFFSET 0x10410 56 #define OLDMEM_BASE_OFFSET 0x10418 57 #define OLDMEM_SIZE_OFFSET 0x10420 58 #define KERNEL_VERSION_OFFSET 0x10428 59 #define COMMAND_LINE_OFFSET 0x10480 60 61 #ifndef __ASSEMBLY__ 62 63 #include <asm/lowcore.h> 64 #include <asm/types.h> 65 66 #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) 67 #define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET)) 68 #define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET)) 69 #define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) 70 #define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) 71 #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) 72 73 struct parmarea { 74 unsigned long ipl_device; /* 0x10400 */ 75 unsigned long initrd_start; /* 0x10408 */ 76 unsigned long initrd_size; /* 0x10410 */ 77 unsigned long oldmem_base; /* 0x10418 */ 78 unsigned long oldmem_size; /* 0x10420 */ 79 unsigned long kernel_version; /* 0x10428 */ 80 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */ 81 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */ 82 }; 83 84 extern unsigned int zlib_dfltcc_support; 85 #define ZLIB_DFLTCC_DISABLED 0 86 #define ZLIB_DFLTCC_FULL 1 87 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 88 #define ZLIB_DFLTCC_INFLATE_ONLY 3 89 #define ZLIB_DFLTCC_FULL_DEBUG 4 90 91 extern int noexec_disabled; 92 extern int memory_end_set; 93 extern unsigned long memory_end; 94 extern unsigned long vmalloc_size; 95 extern unsigned long max_physmem_end; 96 97 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 98 extern unsigned long mio_wb_bit_mask; 99 100 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 101 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 102 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 103 104 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 105 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 106 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 107 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 108 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 109 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 110 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 111 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 112 #define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) 113 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 114 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 115 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 116 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 117 #define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO) 118 119 /* 120 * Console mode. Override with conmode= 121 */ 122 extern unsigned int console_mode; 123 extern unsigned int console_devno; 124 extern unsigned int console_irq; 125 126 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 127 #define CONSOLE_IS_SCLP (console_mode == 1) 128 #define CONSOLE_IS_3215 (console_mode == 2) 129 #define CONSOLE_IS_3270 (console_mode == 3) 130 #define CONSOLE_IS_VT220 (console_mode == 4) 131 #define CONSOLE_IS_HVC (console_mode == 5) 132 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 133 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 134 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 135 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 136 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 137 138 #ifdef CONFIG_PFAULT 139 extern int pfault_init(void); 140 extern void pfault_fini(void); 141 #else /* CONFIG_PFAULT */ 142 #define pfault_init() ({-1;}) 143 #define pfault_fini() do { } while (0) 144 #endif /* CONFIG_PFAULT */ 145 146 #ifdef CONFIG_VMCP 147 void vmcp_cma_reserve(void); 148 #else vmcp_cma_reserve(void)149static inline void vmcp_cma_reserve(void) { } 150 #endif 151 152 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 153 154 void cmma_init(void); 155 void cmma_init_nodat(void); 156 157 extern void (*_machine_restart)(char *command); 158 extern void (*_machine_halt)(void); 159 extern void (*_machine_power_off)(void); 160 161 extern unsigned long __kaslr_offset; kaslr_offset(void)162static inline unsigned long kaslr_offset(void) 163 { 164 return __kaslr_offset; 165 } 166 gen_lpswe(unsigned long addr)167static inline u32 gen_lpswe(unsigned long addr) 168 { 169 BUILD_BUG_ON(addr > 0xfff); 170 return 0xb2b20000 | addr; 171 } 172 173 #else /* __ASSEMBLY__ */ 174 175 #define IPL_DEVICE (IPL_DEVICE_OFFSET) 176 #define INITRD_START (INITRD_START_OFFSET) 177 #define INITRD_SIZE (INITRD_SIZE_OFFSET) 178 #define OLDMEM_BASE (OLDMEM_BASE_OFFSET) 179 #define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) 180 #define COMMAND_LINE (COMMAND_LINE_OFFSET) 181 182 #endif /* __ASSEMBLY__ */ 183 #endif /* _ASM_S390_SETUP_H */ 184