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 26 #define LPP_MAGIC BIT(31) 27 #define LPP_PID_MASK _AC(0xffffffff, UL) 28 29 /* Offsets to entry points in kernel/head.S */ 30 31 #define STARTUP_NORMAL_OFFSET 0x10000 32 #define STARTUP_KDUMP_OFFSET 0x10010 33 34 #define LEGACY_COMMAND_LINE_SIZE 896 35 36 #ifndef __ASSEMBLY__ 37 38 #include <asm/lowcore.h> 39 #include <asm/types.h> 40 41 struct parmarea { 42 unsigned long ipl_device; /* 0x10400 */ 43 unsigned long initrd_start; /* 0x10408 */ 44 unsigned long initrd_size; /* 0x10410 */ 45 unsigned long oldmem_base; /* 0x10418 */ 46 unsigned long oldmem_size; /* 0x10420 */ 47 unsigned long kernel_version; /* 0x10428 */ 48 unsigned long max_command_line_size; /* 0x10430 */ 49 char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */ 50 char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */ 51 }; 52 53 extern struct parmarea parmarea; 54 55 extern unsigned int zlib_dfltcc_support; 56 #define ZLIB_DFLTCC_DISABLED 0 57 #define ZLIB_DFLTCC_FULL 1 58 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 59 #define ZLIB_DFLTCC_INFLATE_ONLY 3 60 #define ZLIB_DFLTCC_FULL_DEBUG 4 61 62 extern unsigned long ident_map_size; 63 extern unsigned long max_mappable; 64 65 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 66 extern unsigned long mio_wb_bit_mask; 67 68 #define MACHINE_IS_VM (get_lowcore()->machine_flags & MACHINE_FLAG_VM) 69 #define MACHINE_IS_KVM (get_lowcore()->machine_flags & MACHINE_FLAG_KVM) 70 #define MACHINE_IS_LPAR (get_lowcore()->machine_flags & MACHINE_FLAG_LPAR) 71 72 #define MACHINE_HAS_DIAG9C (get_lowcore()->machine_flags & MACHINE_FLAG_DIAG9C) 73 #define MACHINE_HAS_ESOP (get_lowcore()->machine_flags & MACHINE_FLAG_ESOP) 74 75 /* 76 * Console mode. Override with conmode= 77 */ 78 extern unsigned int console_mode; 79 extern unsigned int console_devno; 80 extern unsigned int console_irq; 81 82 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 83 #define CONSOLE_IS_SCLP (console_mode == 1) 84 #define CONSOLE_IS_3215 (console_mode == 2) 85 #define CONSOLE_IS_3270 (console_mode == 3) 86 #define CONSOLE_IS_VT220 (console_mode == 4) 87 #define CONSOLE_IS_HVC (console_mode == 5) 88 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 89 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 90 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 91 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 92 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 93 94 void register_early_console(void); 95 96 #ifdef CONFIG_VMCP 97 void vmcp_cma_reserve(void); 98 #else 99 static inline void vmcp_cma_reserve(void) { } 100 #endif 101 102 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 103 104 extern void (*_machine_restart)(char *command); 105 extern void (*_machine_halt)(void); 106 extern void (*_machine_power_off)(void); 107 108 struct oldmem_data { 109 unsigned long start; 110 unsigned long size; 111 }; 112 extern struct oldmem_data oldmem_data; 113 114 static __always_inline u32 gen_lpswe(unsigned long addr) 115 { 116 BUILD_BUG_ON(addr > 0xfff); 117 return 0xb2b20000 | addr; 118 } 119 #endif /* __ASSEMBLY__ */ 120 #endif /* _ASM_S390_SETUP_H */ 121