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 25 #define LPP_MAGIC BIT(31) 26 #define LPP_PID_MASK _AC(0xffffffff, UL) 27 28 /* Offsets to entry points in kernel/head.S */ 29 30 #define STARTUP_NORMAL_OFFSET 0x10000 31 #define STARTUP_KDUMP_OFFSET 0x10010 32 33 #define LEGACY_COMMAND_LINE_SIZE 896 34 35 #ifndef __ASSEMBLY__ 36 37 #include <asm/lowcore.h> 38 #include <asm/types.h> 39 40 struct parmarea { 41 unsigned long ipl_device; /* 0x10400 */ 42 unsigned long initrd_start; /* 0x10408 */ 43 unsigned long initrd_size; /* 0x10410 */ 44 unsigned long oldmem_base; /* 0x10418 */ 45 unsigned long oldmem_size; /* 0x10420 */ 46 unsigned long kernel_version; /* 0x10428 */ 47 unsigned long max_command_line_size; /* 0x10430 */ 48 char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */ 49 char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */ 50 }; 51 52 extern struct parmarea parmarea; 53 54 extern unsigned int zlib_dfltcc_support; 55 #define ZLIB_DFLTCC_DISABLED 0 56 #define ZLIB_DFLTCC_FULL 1 57 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 58 #define ZLIB_DFLTCC_INFLATE_ONLY 3 59 #define ZLIB_DFLTCC_FULL_DEBUG 4 60 61 extern unsigned long ident_map_size; 62 extern unsigned long max_mappable; 63 64 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 65 extern unsigned long mio_wb_bit_mask; 66 67 #define MACHINE_IS_VM (get_lowcore()->machine_flags & MACHINE_FLAG_VM) 68 #define MACHINE_IS_KVM (get_lowcore()->machine_flags & MACHINE_FLAG_KVM) 69 #define MACHINE_IS_LPAR (get_lowcore()->machine_flags & MACHINE_FLAG_LPAR) 70 71 #define MACHINE_HAS_DIAG9C (get_lowcore()->machine_flags & MACHINE_FLAG_DIAG9C) 72 73 /* 74 * Console mode. Override with conmode= 75 */ 76 extern unsigned int console_mode; 77 extern unsigned int console_devno; 78 extern unsigned int console_irq; 79 80 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 81 #define CONSOLE_IS_SCLP (console_mode == 1) 82 #define CONSOLE_IS_3215 (console_mode == 2) 83 #define CONSOLE_IS_3270 (console_mode == 3) 84 #define CONSOLE_IS_VT220 (console_mode == 4) 85 #define CONSOLE_IS_HVC (console_mode == 5) 86 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 87 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 88 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 89 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 90 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 91 92 void register_early_console(void); 93 94 #ifdef CONFIG_VMCP 95 void vmcp_cma_reserve(void); 96 #else 97 static inline void vmcp_cma_reserve(void) { } 98 #endif 99 100 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 101 102 extern void (*_machine_restart)(char *command); 103 extern void (*_machine_halt)(void); 104 extern void (*_machine_power_off)(void); 105 106 struct oldmem_data { 107 unsigned long start; 108 unsigned long size; 109 }; 110 extern struct oldmem_data oldmem_data; 111 112 static __always_inline u32 gen_lpswe(unsigned long addr) 113 { 114 BUILD_BUG_ON(addr > 0xfff); 115 return 0xb2b20000 | addr; 116 } 117 #endif /* __ASSEMBLY__ */ 118 #endif /* _ASM_S390_SETUP_H */ 119