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#define HEAD_END 0x11000 15 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_VX BIT(13) 32#define MACHINE_FLAG_TLB_GUEST BIT(14) 33#define MACHINE_FLAG_NX BIT(15) 34#define MACHINE_FLAG_GS BIT(16) 35#define MACHINE_FLAG_SCC BIT(17) 36#define MACHINE_FLAG_PCI_MIO BIT(18) 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#ifndef __ASSEMBLY__ 47 48#include <asm/lowcore.h> 49#include <asm/types.h> 50 51struct parmarea { 52 unsigned long ipl_device; /* 0x10400 */ 53 unsigned long initrd_start; /* 0x10408 */ 54 unsigned long initrd_size; /* 0x10410 */ 55 unsigned long oldmem_base; /* 0x10418 */ 56 unsigned long oldmem_size; /* 0x10420 */ 57 unsigned long kernel_version; /* 0x10428 */ 58 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */ 59 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */ 60}; 61 62extern struct parmarea parmarea; 63 64extern unsigned int zlib_dfltcc_support; 65#define ZLIB_DFLTCC_DISABLED 0 66#define ZLIB_DFLTCC_FULL 1 67#define ZLIB_DFLTCC_DEFLATE_ONLY 2 68#define ZLIB_DFLTCC_INFLATE_ONLY 3 69#define ZLIB_DFLTCC_FULL_DEBUG 4 70 71extern int noexec_disabled; 72extern unsigned long ident_map_size; 73 74/* The Write Back bit position in the physaddr is given by the SLPC PCI */ 75extern unsigned long mio_wb_bit_mask; 76 77#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 78#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 79#define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 80 81#define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 82#define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 83#define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 84#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 85#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 86#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 87#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 88#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 89#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) 90#define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 91#define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 92#define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 93#define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 94#define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO) 95 96/* 97 * Console mode. Override with conmode= 98 */ 99extern unsigned int console_mode; 100extern unsigned int console_devno; 101extern unsigned int console_irq; 102 103#define CONSOLE_IS_UNDEFINED (console_mode == 0) 104#define CONSOLE_IS_SCLP (console_mode == 1) 105#define CONSOLE_IS_3215 (console_mode == 2) 106#define CONSOLE_IS_3270 (console_mode == 3) 107#define CONSOLE_IS_VT220 (console_mode == 4) 108#define CONSOLE_IS_HVC (console_mode == 5) 109#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 110#define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 111#define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 112#define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 113#define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 114 115#ifdef CONFIG_PFAULT 116extern int pfault_init(void); 117extern void pfault_fini(void); 118#else /* CONFIG_PFAULT */ 119#define pfault_init() ({-1;}) 120#define pfault_fini() do { } while (0) 121#endif /* CONFIG_PFAULT */ 122 123#ifdef CONFIG_VMCP 124void vmcp_cma_reserve(void); 125#else 126static inline void vmcp_cma_reserve(void) { } 127#endif 128 129void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 130 131void cmma_init(void); 132void cmma_init_nodat(void); 133 134extern void (*_machine_restart)(char *command); 135extern void (*_machine_halt)(void); 136extern void (*_machine_power_off)(void); 137 138extern unsigned long __kaslr_offset; 139static inline unsigned long kaslr_offset(void) 140{ 141 return __kaslr_offset; 142} 143 144extern int is_full_image; 145 146struct initrd_data { 147 unsigned long start; 148 unsigned long size; 149}; 150extern struct initrd_data initrd_data; 151 152struct oldmem_data { 153 unsigned long start; 154 unsigned long size; 155}; 156extern struct oldmem_data oldmem_data; 157 158static inline u32 gen_lpswe(unsigned long addr) 159{ 160 BUILD_BUG_ON(addr > 0xfff); 161 return 0xb2b20000 | addr; 162} 163#endif /* __ASSEMBLY__ */ 164#endif /* _ASM_S390_SETUP_H */ 165