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/* 20 * Machine features detected in early.c 21 */ 22 23#define MACHINE_FLAG_VM BIT(0) 24#define MACHINE_FLAG_KVM BIT(1) 25#define MACHINE_FLAG_LPAR BIT(2) 26#define MACHINE_FLAG_DIAG9C BIT(3) 27#define MACHINE_FLAG_ESOP BIT(4) 28#define MACHINE_FLAG_IDTE BIT(5) 29#define MACHINE_FLAG_EDAT1 BIT(7) 30#define MACHINE_FLAG_EDAT2 BIT(8) 31#define MACHINE_FLAG_TOPOLOGY BIT(10) 32#define MACHINE_FLAG_TE BIT(11) 33#define MACHINE_FLAG_TLB_LC BIT(12) 34#define MACHINE_FLAG_VX BIT(13) 35#define MACHINE_FLAG_TLB_GUEST BIT(14) 36#define MACHINE_FLAG_NX BIT(15) 37#define MACHINE_FLAG_GS BIT(16) 38#define MACHINE_FLAG_SCC BIT(17) 39 40#define LPP_MAGIC BIT(31) 41#define LPP_PID_MASK _AC(0xffffffff, UL) 42 43/* Offsets to entry points in kernel/head.S */ 44 45#define STARTUP_NORMAL_OFFSET 0x10000 46#define STARTUP_KDUMP_OFFSET 0x10010 47 48/* Offsets to parameters in kernel/head.S */ 49 50#define IPL_DEVICE_OFFSET 0x10400 51#define INITRD_START_OFFSET 0x10408 52#define INITRD_SIZE_OFFSET 0x10410 53#define OLDMEM_BASE_OFFSET 0x10418 54#define OLDMEM_SIZE_OFFSET 0x10420 55#define KERNEL_VERSION_OFFSET 0x10428 56#define COMMAND_LINE_OFFSET 0x10480 57 58#ifndef __ASSEMBLY__ 59 60#include <asm/lowcore.h> 61#include <asm/types.h> 62 63#define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) 64#define INITRD_START (*(unsigned long *) (INITRD_START_OFFSET)) 65#define INITRD_SIZE (*(unsigned long *) (INITRD_SIZE_OFFSET)) 66#define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) 67#define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) 68#define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) 69 70struct parmarea { 71 unsigned long ipl_device; /* 0x10400 */ 72 unsigned long initrd_start; /* 0x10408 */ 73 unsigned long initrd_size; /* 0x10410 */ 74 unsigned long oldmem_base; /* 0x10418 */ 75 unsigned long oldmem_size; /* 0x10420 */ 76 unsigned long kernel_version; /* 0x10428 */ 77 char pad1[0x10480 - 0x10430]; /* 0x10430 - 0x10480 */ 78 char command_line[ARCH_COMMAND_LINE_SIZE]; /* 0x10480 */ 79}; 80 81extern struct parmarea parmarea; 82 83extern 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 90extern int noexec_disabled; 91extern unsigned long ident_map_size; 92 93/* The Write Back bit position in the physaddr is given by the SLPC PCI */ 94extern unsigned long mio_wb_bit_mask; 95 96#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) 97#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) 98#define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) 99 100#define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) 101#define MACHINE_HAS_ESOP (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP) 102#define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) 103#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1) 104#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2) 105#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) 106#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE) 107#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC) 108#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX) 109#define MACHINE_HAS_TLB_GUEST (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST) 110#define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX) 111#define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS) 112#define MACHINE_HAS_SCC (S390_lowcore.machine_flags & MACHINE_FLAG_SCC) 113 114/* 115 * Console mode. Override with conmode= 116 */ 117extern unsigned int console_mode; 118extern unsigned int console_devno; 119extern unsigned int console_irq; 120 121#define CONSOLE_IS_UNDEFINED (console_mode == 0) 122#define CONSOLE_IS_SCLP (console_mode == 1) 123#define CONSOLE_IS_3215 (console_mode == 2) 124#define CONSOLE_IS_3270 (console_mode == 3) 125#define CONSOLE_IS_VT220 (console_mode == 4) 126#define CONSOLE_IS_HVC (console_mode == 5) 127#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 128#define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 129#define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 130#define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 131#define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 132 133#ifdef CONFIG_PFAULT 134extern int pfault_init(void); 135extern void pfault_fini(void); 136#else /* CONFIG_PFAULT */ 137#define pfault_init() ({-1;}) 138#define pfault_fini() do { } while (0) 139#endif /* CONFIG_PFAULT */ 140 141#ifdef CONFIG_VMCP 142void vmcp_cma_reserve(void); 143#else 144static inline void vmcp_cma_reserve(void) { } 145#endif 146 147void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 148 149void cmma_init(void); 150void cmma_init_nodat(void); 151 152extern void (*_machine_restart)(char *command); 153extern void (*_machine_halt)(void); 154extern void (*_machine_power_off)(void); 155 156extern unsigned long __kaslr_offset; 157static inline unsigned long kaslr_offset(void) 158{ 159 return __kaslr_offset; 160} 161 162extern int is_full_image; 163 164static inline u32 gen_lpswe(unsigned long addr) 165{ 166 BUILD_BUG_ON(addr > 0xfff); 167 return 0xb2b20000 | addr; 168} 169 170#else /* __ASSEMBLY__ */ 171 172#define IPL_DEVICE (IPL_DEVICE_OFFSET) 173#define INITRD_START (INITRD_START_OFFSET) 174#define INITRD_SIZE (INITRD_SIZE_OFFSET) 175#define OLDMEM_BASE (OLDMEM_BASE_OFFSET) 176#define OLDMEM_SIZE (OLDMEM_SIZE_OFFSET) 177#define COMMAND_LINE (COMMAND_LINE_OFFSET) 178 179#endif /* __ASSEMBLY__ */ 180#endif /* _ASM_S390_SETUP_H */ 181