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 PARMAREA 0x10400 14 15 #define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE 16 /* 17 * Machine features detected in early.c 18 */ 19 20 #define MACHINE_FLAG_VM BIT(0) 21 #define MACHINE_FLAG_KVM BIT(1) 22 #define MACHINE_FLAG_LPAR BIT(2) 23 #define MACHINE_FLAG_DIAG9C BIT(3) 24 #define MACHINE_FLAG_ESOP BIT(4) 25 #define MACHINE_FLAG_IDTE BIT(5) 26 #define MACHINE_FLAG_EDAT1 BIT(7) 27 #define MACHINE_FLAG_EDAT2 BIT(8) 28 #define MACHINE_FLAG_TOPOLOGY BIT(10) 29 #define MACHINE_FLAG_TE BIT(11) 30 #define MACHINE_FLAG_TLB_LC BIT(12) 31 #define MACHINE_FLAG_TLB_GUEST BIT(14) 32 #define MACHINE_FLAG_NX BIT(15) 33 #define MACHINE_FLAG_GS BIT(16) 34 #define MACHINE_FLAG_SCC BIT(17) 35 #define MACHINE_FLAG_PCI_MIO BIT(18) 36 #define MACHINE_FLAG_RDP BIT(19) 37 38 #define LPP_MAGIC BIT(31) 39 #define LPP_PID_MASK _AC(0xffffffff, UL) 40 41 /* Offsets to entry points in kernel/head.S */ 42 43 #define STARTUP_NORMAL_OFFSET 0x10000 44 #define STARTUP_KDUMP_OFFSET 0x10010 45 46 #define LEGACY_COMMAND_LINE_SIZE 896 47 48 #ifndef __ASSEMBLY__ 49 50 #include <asm/lowcore.h> 51 #include <asm/types.h> 52 53 struct parmarea { 54 unsigned long ipl_device; /* 0x10400 */ 55 unsigned long initrd_start; /* 0x10408 */ 56 unsigned long initrd_size; /* 0x10410 */ 57 unsigned long oldmem_base; /* 0x10418 */ 58 unsigned long oldmem_size; /* 0x10420 */ 59 unsigned long kernel_version; /* 0x10428 */ 60 unsigned long max_command_line_size; /* 0x10430 */ 61 char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */ 62 char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */ 63 }; 64 65 extern struct parmarea parmarea; 66 67 extern unsigned int zlib_dfltcc_support; 68 #define ZLIB_DFLTCC_DISABLED 0 69 #define ZLIB_DFLTCC_FULL 1 70 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 71 #define ZLIB_DFLTCC_INFLATE_ONLY 3 72 #define ZLIB_DFLTCC_FULL_DEBUG 4 73 74 extern unsigned long ident_map_size; 75 extern unsigned long max_mappable; 76 77 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 78 extern unsigned long mio_wb_bit_mask; 79 80 #define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 81 #define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 82 #define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 83 84 #define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 85 #define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 86 #define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 87 #define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 88 #define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 89 #define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 90 #define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 91 #define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 92 #define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 93 #define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 94 #define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 95 #define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 96 #define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO) 97 #define MACHINE_HAS_RDP (S390_lowcore.machine_flags & MACHINE_FLAG_RDP) 98 99 /* 100 * Console mode. Override with conmode= 101 */ 102 extern unsigned int console_mode; 103 extern unsigned int console_devno; 104 extern unsigned int console_irq; 105 106 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 107 #define CONSOLE_IS_SCLP (console_mode == 1) 108 #define CONSOLE_IS_3215 (console_mode == 2) 109 #define CONSOLE_IS_3270 (console_mode == 3) 110 #define CONSOLE_IS_VT220 (console_mode == 4) 111 #define CONSOLE_IS_HVC (console_mode == 5) 112 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 113 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 114 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 115 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 116 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 117 118 #ifdef CONFIG_VMCP 119 void vmcp_cma_reserve(void); 120 #else vmcp_cma_reserve(void)121static inline void vmcp_cma_reserve(void) { } 122 #endif 123 124 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 125 126 extern void (*_machine_restart)(char *command); 127 extern void (*_machine_halt)(void); 128 extern void (*_machine_power_off)(void); 129 130 struct oldmem_data { 131 unsigned long start; 132 unsigned long size; 133 }; 134 extern struct oldmem_data oldmem_data; 135 gen_lpswe(unsigned long addr)136static __always_inline u32 gen_lpswe(unsigned long addr) 137 { 138 BUILD_BUG_ON(addr > 0xfff); 139 return 0xb2b20000 | addr; 140 } 141 #endif /* __ASSEMBLY__ */ 142 #endif /* _ASM_S390_SETUP_H */ 143