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 53struct 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 65extern struct parmarea parmarea; 66 67extern 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 74extern unsigned long ident_map_size; 75extern unsigned long max_mappable; 76 77/* The Write Back bit position in the physaddr is given by the SLPC PCI */ 78extern 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 */ 102extern unsigned int console_mode; 103extern unsigned int console_devno; 104extern 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 119void vmcp_cma_reserve(void); 120#else 121static inline void vmcp_cma_reserve(void) { } 122#endif 123 124void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 125 126extern void (*_machine_restart)(char *command); 127extern void (*_machine_halt)(void); 128extern void (*_machine_power_off)(void); 129 130extern unsigned long __kaslr_offset; 131static inline unsigned long kaslr_offset(void) 132{ 133 return __kaslr_offset; 134} 135 136extern int __kaslr_enabled; 137static inline int kaslr_enabled(void) 138{ 139 if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) 140 return __kaslr_enabled; 141 return 0; 142} 143 144struct oldmem_data { 145 unsigned long start; 146 unsigned long size; 147}; 148extern struct oldmem_data oldmem_data; 149 150static __always_inline u32 gen_lpswe(unsigned long addr) 151{ 152 BUILD_BUG_ON(addr > 0xfff); 153 return 0xb2b20000 | addr; 154} 155#endif /* __ASSEMBLY__ */ 156#endif /* _ASM_S390_SETUP_H */ 157