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 __ASSEMBLER__ 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 char arch_hw_string[128]; 45 46 extern struct parmarea parmarea; 47 48 extern unsigned int zlib_dfltcc_support; 49 #define ZLIB_DFLTCC_DISABLED 0 50 #define ZLIB_DFLTCC_FULL 1 51 #define ZLIB_DFLTCC_DEFLATE_ONLY 2 52 #define ZLIB_DFLTCC_INFLATE_ONLY 3 53 #define ZLIB_DFLTCC_FULL_DEBUG 4 54 55 extern unsigned long ident_map_size; 56 extern unsigned long max_mappable; 57 58 /* The Write Back bit position in the physaddr is given by the SLPC PCI */ 59 extern unsigned long mio_wb_bit_mask; 60 61 /* 62 * Console mode. Override with conmode= 63 */ 64 extern unsigned int console_mode; 65 extern unsigned int console_devno; 66 extern unsigned int console_irq; 67 68 #define CONSOLE_IS_UNDEFINED (console_mode == 0) 69 #define CONSOLE_IS_SCLP (console_mode == 1) 70 #define CONSOLE_IS_3215 (console_mode == 2) 71 #define CONSOLE_IS_3270 (console_mode == 3) 72 #define CONSOLE_IS_VT220 (console_mode == 4) 73 #define CONSOLE_IS_HVC (console_mode == 5) 74 #define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) 75 #define SET_CONSOLE_3215 do { console_mode = 2; } while (0) 76 #define SET_CONSOLE_3270 do { console_mode = 3; } while (0) 77 #define SET_CONSOLE_VT220 do { console_mode = 4; } while (0) 78 #define SET_CONSOLE_HVC do { console_mode = 5; } while (0) 79 80 void register_early_console(void); 81 82 #ifdef CONFIG_VMCP 83 void vmcp_cma_reserve(void); 84 #else vmcp_cma_reserve(void)85static inline void vmcp_cma_reserve(void) { } 86 #endif 87 88 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault); 89 90 extern void (*_machine_restart)(char *command); 91 extern void (*_machine_halt)(void); 92 extern void (*_machine_power_off)(void); 93 94 struct oldmem_data { 95 unsigned long start; 96 unsigned long size; 97 }; 98 extern struct oldmem_data oldmem_data; 99 gen_lpswe(unsigned long addr)100static __always_inline u32 gen_lpswe(unsigned long addr) 101 { 102 BUILD_BUG_ON(addr > 0xfff); 103 return 0xb2b20000 | addr; 104 } 105 #endif /* __ASSEMBLER__ */ 106 #endif /* _ASM_S390_SETUP_H */ 107