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