1 /* SPDX-License-Identifier: GPL-2.0 */
4 * Copyright IBM Corp. 1999, 2017
6 #ifndef _ASM_S390_SETUP_H
7 #define _ASM_S390_SETUP_H
9 #include <linux/bits.h>
10 #include <uapi/asm/setup.h>
11 #include <linux/build_bug.h>
13 #define PARMAREA 0x10400
15 #define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE
17 #define LPP_MAGIC BIT(31)
18 #define LPP_PID_MASK _AC(0xffffffff, UL)
20 /* Offsets to entry points in kernel/head.S */
22 #define STARTUP_NORMAL_OFFSET 0x10000
23 #define STARTUP_KDUMP_OFFSET 0x10010
25 #define LEGACY_COMMAND_LINE_SIZE 896
29 #include <asm/lowcore.h>
30 #include <asm/types.h>
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 */
44 extern struct parmarea parmarea;
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
53 extern unsigned long ident_map_size;
54 extern unsigned long max_mappable;
56 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
57 extern unsigned long mio_wb_bit_mask;
60 * Console mode. Override with conmode=
62 extern unsigned int console_mode;
63 extern unsigned int console_devno;
64 extern unsigned int console_irq;
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)
78 void register_early_console(void);
81 void vmcp_cma_reserve(void);
83 static inline void vmcp_cma_reserve(void) { }
86 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
88 extern void (*_machine_restart)(char *command);
89 extern void (*_machine_halt)(void);
90 extern void (*_machine_power_off)(void);
96 extern struct oldmem_data oldmem_data;
98 static __always_inline u32 gen_lpswe(unsigned long addr)
100 BUILD_BUG_ON(addr > 0xfff);
101 return 0xb2b20000 | addr;
103 #endif /* __ASSEMBLY__ */
104 #endif /* _ASM_S390_SETUP_H */