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