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_IDTE BIT(5) 26 #define MACHINE_FLAG_EDAT1 BIT(7) 27 #define MACHINE_FLAG_EDAT2 BIT(8) 28 #define MACHINE_FLAG_TOPOLOGY BIT(10) 29 #define MACHINE_FLAG_TE BIT(11) 30 #define MACHINE_FLAG_TLB_GUEST BIT(14) 31 #define MACHINE_FLAG_SCC BIT(17) 32 #define MACHINE_FLAG_PCI_MIO BIT(18) 33 34 #define LPP_MAGIC BIT(31) 35 #define LPP_PID_MASK _AC(0xffffffff, UL) 36 37 /* Offsets to entry points in kernel/head.S */ 38 39 #define STARTUP_NORMAL_OFFSET 0x10000 40 #define STARTUP_KDUMP_OFFSET 0x10010 41 42 #define LEGACY_COMMAND_LINE_SIZE 896 43 44 #ifndef __ASSEMBLY__ 45 46 #include <asm/lowcore.h> 47 #include <asm/types.h> 48 49 struct parmarea { 50 unsigned long ipl_device; /* 0x10400 */ 51 unsigned long initrd_start; /* 0x10408 */ 52 unsigned long initrd_size; /* 0x10410 */ 53 unsigned long oldmem_base; /* 0x10418 */ 54 unsigned long oldmem_size; /* 0x10420 */ 55 unsigned long kernel_version; /* 0x10428 */ 56 unsigned long max_command_line_size; /* 0x10430 */ 57 char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */ 58 char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */ 59 }; 60 61 extern struct parmarea parmarea; 62 63 extern unsigned int zlib_dfltcc_support; 64 #define ZLIB_DFLTCC_DISABLED 0 65 #define ZLIB_DFLTCC_FULL 1 66 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 67 #define ZLIB_DFLTCC_INFLATE_ONLY 3 68 #define ZLIB_DFLTCC_FULL_DEBUG 4 69 70 extern unsigned long ident_map_size; 71 extern unsigned long max_mappable; 72 73 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 74 extern unsigned long mio_wb_bit_mask; 75 76 #define MACHINE_IS_VM (get_lowcore()->machine_flags & MACHINE_FLAG_VM) 77 #define MACHINE_IS_KVM (get_lowcore()->machine_flags & MACHINE_FLAG_KVM) 78 #define MACHINE_IS_LPAR (get_lowcore()->machine_flags & MACHINE_FLAG_LPAR) 79 80 #define MACHINE_HAS_DIAG9C (get_lowcore()->machine_flags & MACHINE_FLAG_DIAG9C) 81 #define MACHINE_HAS_ESOP (get_lowcore()->machine_flags & MACHINE_FLAG_ESOP) 82 #define MACHINE_HAS_IDTE (get_lowcore()->machine_flags & MACHINE_FLAG_IDTE) 83 #define MACHINE_HAS_EDAT1 (get_lowcore()->machine_flags & MACHINE_FLAG_EDAT1) 84 #define MACHINE_HAS_EDAT2 (get_lowcore()->machine_flags & MACHINE_FLAG_EDAT2) 85 #define MACHINE_HAS_TOPOLOGY (get_lowcore()->machine_flags & MACHINE_FLAG_TOPOLOGY) 86 #define MACHINE_HAS_TE (get_lowcore()->machine_flags & MACHINE_FLAG_TE) 87 #define MACHINE_HAS_TLB_GUEST (get_lowcore()->machine_flags & MACHINE_FLAG_TLB_GUEST) 88 #define MACHINE_HAS_SCC (get_lowcore()->machine_flags & MACHINE_FLAG_SCC) 89 #define MACHINE_HAS_PCI_MIO (get_lowcore()->machine_flags & MACHINE_FLAG_PCI_MIO) 90 91 /* 92 * Console mode. Override with conmode= 93 */ 94 extern unsigned int console_mode; 95 extern unsigned int console_devno; 96 extern unsigned int console_irq; 97 98 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 99 #define CONSOLE_IS_SCLP (console_mode == 1) 100 #define CONSOLE_IS_3215 (console_mode == 2) 101 #define CONSOLE_IS_3270 (console_mode == 3) 102 #define CONSOLE_IS_VT220 (console_mode == 4) 103 #define CONSOLE_IS_HVC (console_mode == 5) 104 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 105 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 106 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 107 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 108 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 109 110 void register_early_console(void); 111 112 #ifdef CONFIG_VMCP 113 void vmcp_cma_reserve(void); 114 #else 115 static inline void vmcp_cma_reserve(void) { } 116 #endif 117 118 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 119 120 extern void (*_machine_restart)(char *command); 121 extern void (*_machine_halt)(void); 122 extern void (*_machine_power_off)(void); 123 124 struct oldmem_data { 125 unsigned long start; 126 unsigned long size; 127 }; 128 extern struct oldmem_data oldmem_data; 129 130 static __always_inline u32 gen_lpswe(unsigned long addr) 131 { 132 BUILD_BUG_ON(addr > 0xfff); 133 return 0xb2b20000 | addr; 134 } 135 #endif /* __ASSEMBLY__ */ 136 #endif /* _ASM_S390_SETUP_H */ 137