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 73struct 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 84extern 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 91extern int noexec_disabled; 92extern int memory_end_set; 93extern unsigned long memory_end; 94extern unsigned long vmalloc_size; 95extern unsigned long max_physmem_end; 96 97/* The Write Back bit position in the physaddr is given by the SLPC PCI */ 98extern 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 */ 122extern unsigned int console_mode; 123extern unsigned int console_devno; 124extern 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 139extern int pfault_init(void); 140extern 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 147void vmcp_cma_reserve(void); 148#else 149static inline void vmcp_cma_reserve(void) { } 150#endif 151 152void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 153 154void cmma_init(void); 155void cmma_init_nodat(void); 156 157extern void (*_machine_restart)(char *command); 158extern void (*_machine_halt)(void); 159extern void (*_machine_power_off)(void); 160 161extern unsigned long __kaslr_offset; 162static inline unsigned long kaslr_offset(void) 163{ 164 return __kaslr_offset; 165} 166 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