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 #define LPP_MAGIC BIT(31) 18 #define LPP_PID_MASK _AC(0xffffffff, UL) 19 20 /* Offsets to entry points in kernel/head.S */ 21 22 #define STARTUP_NORMAL_OFFSET 0x10000 23 #define STARTUP_KDUMP_OFFSET 0x10010 24 25 #define LEGACY_COMMAND_LINE_SIZE 896 26 27 #ifndef __ASSEMBLY__ 28 29 #include <asm/lowcore.h> 30 #include <asm/types.h> 31 32 struct parmarea { 33 unsigned long ipl_device; /* 0x10400 */ 34 unsigned long initrd_start; /* 0x10408 */ 35 unsigned long initrd_size; /* 0x10410 */ 36 unsigned long oldmem_base; /* 0x10418 */ 37 unsigned long oldmem_size; /* 0x10420 */ 38 unsigned long kernel_version; /* 0x10428 */ 39 unsigned long max_command_line_size; /* 0x10430 */ 40 char pad1[0x10480-0x10438]; /* 0x10438 - 0x10480 */ 41 char command_line[COMMAND_LINE_SIZE]; /* 0x10480 */ 42 }; 43 44 extern struct parmarea parmarea; 45 46 extern unsigned int zlib_dfltcc_support; 47 #define ZLIB_DFLTCC_DISABLED 0 48 #define ZLIB_DFLTCC_FULL 1 49 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 50 #define ZLIB_DFLTCC_INFLATE_ONLY 3 51 #define ZLIB_DFLTCC_FULL_DEBUG 4 52 53 extern unsigned long ident_map_size; 54 extern unsigned long max_mappable; 55 56 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 57 extern unsigned long mio_wb_bit_mask; 58 59 /* 60 * Console mode. Override with conmode= 61 */ 62 extern unsigned int console_mode; 63 extern unsigned int console_devno; 64 extern unsigned int console_irq; 65 66 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 67 #define CONSOLE_IS_SCLP (console_mode == 1) 68 #define CONSOLE_IS_3215 (console_mode == 2) 69 #define CONSOLE_IS_3270 (console_mode == 3) 70 #define CONSOLE_IS_VT220 (console_mode == 4) 71 #define CONSOLE_IS_HVC (console_mode == 5) 72 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 73 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 74 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 75 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 76 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 77 78 void register_early_console(void); 79 80 #ifdef CONFIG_VMCP 81 void vmcp_cma_reserve(void); 82 #else 83 static inline void vmcp_cma_reserve(void) { } 84 #endif 85 86 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 87 88 extern void (*_machine_restart)(char *command); 89 extern void (*_machine_halt)(void); 90 extern void (*_machine_power_off)(void); 91 92 struct oldmem_data { 93 unsigned long start; 94 unsigned long size; 95 }; 96 extern struct oldmem_data oldmem_data; 97 98 static __always_inline u32 gen_lpswe(unsigned long addr) 99 { 100 BUILD_BUG_ON(addr > 0xfff); 101 return 0xb2b20000 | addr; 102 } 103 #endif /* __ASSEMBLY__ */ 104 #endif /* _ASM_S390_SETUP_H */ 105