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 #define MACHINE_FLAG_TE BIT(11) 26 #define MACHINE_FLAG_TLB_GUEST BIT(14) 27 28 #define LPP_MAGIC BIT(31) 29 #define LPP_PID_MASK _AC(0xffffffff, UL) 30 31 /* Offsets to entry points in kernel/head.S */ 32 33 #define STARTUP_NORMAL_OFFSET 0x10000 34 #define STARTUP_KDUMP_OFFSET 0x10010 35 36 #define LEGACY_COMMAND_LINE_SIZE 896 37 38 #ifndef __ASSEMBLY__ 39 40 #include <asm/lowcore.h> 41 #include <asm/types.h> 42 43 struct parmarea { 44 unsigned long ipl_device; /* 0x10400 */ 45 unsigned long initrd_start; /* 0x10408 */ 46 unsigned long initrd_size; /* 0x10410 */ 47 unsigned long oldmem_base; /* 0x10418 */ 48 unsigned long oldmem_size; /* 0x10420 */ 49 unsigned long kernel_version; /* 0x10428 */ 50 unsigned long max_command_line_size; /* 0x10430 */ 51 char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */ 52 char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */ 53 }; 54 55 extern struct parmarea parmarea; 56 57 extern unsigned int zlib_dfltcc_support; 58 #define ZLIB_DFLTCC_DISABLED 0 59 #define ZLIB_DFLTCC_FULL 1 60 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 61 #define ZLIB_DFLTCC_INFLATE_ONLY 3 62 #define ZLIB_DFLTCC_FULL_DEBUG 4 63 64 extern unsigned long ident_map_size; 65 extern unsigned long max_mappable; 66 67 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 68 extern unsigned long mio_wb_bit_mask; 69 70 #define MACHINE_IS_VM (get_lowcore()->machine_flags & MACHINE_FLAG_VM) 71 #define MACHINE_IS_KVM (get_lowcore()->machine_flags & MACHINE_FLAG_KVM) 72 #define MACHINE_IS_LPAR (get_lowcore()->machine_flags & MACHINE_FLAG_LPAR) 73 74 #define MACHINE_HAS_DIAG9C (get_lowcore()->machine_flags & MACHINE_FLAG_DIAG9C) 75 #define MACHINE_HAS_ESOP (get_lowcore()->machine_flags & MACHINE_FLAG_ESOP) 76 #define MACHINE_HAS_TE (get_lowcore()->machine_flags & MACHINE_FLAG_TE) 77 #define MACHINE_HAS_TLB_GUEST (get_lowcore()->machine_flags & MACHINE_FLAG_TLB_GUEST) 78 79 /* 80 * Console mode. Override with conmode= 81 */ 82 extern unsigned int console_mode; 83 extern unsigned int console_devno; 84 extern unsigned int console_irq; 85 86 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 87 #define CONSOLE_IS_SCLP (console_mode == 1) 88 #define CONSOLE_IS_3215 (console_mode == 2) 89 #define CONSOLE_IS_3270 (console_mode == 3) 90 #define CONSOLE_IS_VT220 (console_mode == 4) 91 #define CONSOLE_IS_HVC (console_mode == 5) 92 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 93 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 94 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 95 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 96 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 97 98 void register_early_console(void); 99 100 #ifdef CONFIG_VMCP 101 void vmcp_cma_reserve(void); 102 #else 103 static inline void vmcp_cma_reserve(void) { } 104 #endif 105 106 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 107 108 extern void (*_machine_restart)(char *command); 109 extern void (*_machine_halt)(void); 110 extern void (*_machine_power_off)(void); 111 112 struct oldmem_data { 113 unsigned long start; 114 unsigned long size; 115 }; 116 extern struct oldmem_data oldmem_data; 117 118 static __always_inline u32 gen_lpswe(unsigned long addr) 119 { 120 BUILD_BUG_ON(addr > 0xfff); 121 return 0xb2b20000 | addr; 122 } 123 #endif /* __ASSEMBLY__ */ 124 #endif /* _ASM_S390_SETUP_H */ 125