include/asm/setup.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  *  S390 version
0004  *    Copyright IBM Corp. 1999, 2017
0005  */
0006 #ifndef _ASM_S390_SETUP_H
0007 #define _ASM_S390_SETUP_H
0008
0009 #include <linux/bits.h>
0010 #include <uapi/asm/setup.h>
0011 #include <linux/build_bug.h>
0012
0013 #define PARMAREA        0x10400
0014
0015 #define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE
0016 /*
0017  * Machine features detected in early.c
0018  */
0019
0020 #define MACHINE_FLAG_VM     BIT(0)
0021 #define MACHINE_FLAG_KVM    BIT(1)
0022 #define MACHINE_FLAG_LPAR   BIT(2)
0023 #define MACHINE_FLAG_DIAG9C BIT(3)
0024 #define MACHINE_FLAG_ESOP   BIT(4)
0025 #define MACHINE_FLAG_IDTE   BIT(5)
0026 #define MACHINE_FLAG_EDAT1  BIT(7)
0027 #define MACHINE_FLAG_EDAT2  BIT(8)
0028 #define MACHINE_FLAG_TOPOLOGY   BIT(10)
0029 #define MACHINE_FLAG_TE     BIT(11)
0030 #define MACHINE_FLAG_TLB_LC BIT(12)
0031 #define MACHINE_FLAG_VX     BIT(13)
0032 #define MACHINE_FLAG_TLB_GUEST  BIT(14)
0033 #define MACHINE_FLAG_NX     BIT(15)
0034 #define MACHINE_FLAG_GS     BIT(16)
0035 #define MACHINE_FLAG_SCC    BIT(17)
0036 #define MACHINE_FLAG_PCI_MIO    BIT(18)
0037
0038 #define LPP_MAGIC       BIT(31)
0039 #define LPP_PID_MASK        _AC(0xffffffff, UL)
0040
0041 /* Offsets to entry points in kernel/head.S  */
0042
0043 #define STARTUP_NORMAL_OFFSET   0x10000
0044 #define STARTUP_KDUMP_OFFSET    0x10010
0045
0046 #define LEGACY_COMMAND_LINE_SIZE    896
0047
0048 #ifndef __ASSEMBLY__
0049
0050 #include <asm/lowcore.h>
0051 #include <asm/types.h>
0052
0053 struct parmarea {
0054     unsigned long ipl_device;           /* 0x10400 */
0055     unsigned long initrd_start;         /* 0x10408 */
0056     unsigned long initrd_size;          /* 0x10410 */
0057     unsigned long oldmem_base;          /* 0x10418 */
0058     unsigned long oldmem_size;          /* 0x10420 */
0059     unsigned long kernel_version;           /* 0x10428 */
0060     unsigned long max_command_line_size;        /* 0x10430 */
0061     char pad1[0x10480-0x10438];         /* 0x10438 - 0x10480 */
0062     char command_line[COMMAND_LINE_SIZE];       /* 0x10480 */
0063 };
0064
0065 extern struct parmarea parmarea;
0066
0067 extern unsigned int zlib_dfltcc_support;
0068 #define ZLIB_DFLTCC_DISABLED        0
0069 #define ZLIB_DFLTCC_FULL        1
0070 #define ZLIB_DFLTCC_DEFLATE_ONLY    2
0071 #define ZLIB_DFLTCC_INFLATE_ONLY    3
0072 #define ZLIB_DFLTCC_FULL_DEBUG      4
0073
0074 extern int noexec_disabled;
0075 extern unsigned long ident_map_size;
0076
0077 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
0078 extern unsigned long mio_wb_bit_mask;
0079
0080 #define MACHINE_IS_VM       (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
0081 #define MACHINE_IS_KVM      (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
0082 #define MACHINE_IS_LPAR     (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
0083
0084 #define MACHINE_HAS_DIAG9C  (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
0085 #define MACHINE_HAS_ESOP    (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
0086 #define MACHINE_HAS_IDTE    (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
0087 #define MACHINE_HAS_EDAT1   (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
0088 #define MACHINE_HAS_EDAT2   (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
0089 #define MACHINE_HAS_TOPOLOGY    (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
0090 #define MACHINE_HAS_TE      (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
0091 #define MACHINE_HAS_TLB_LC  (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
0092 #define MACHINE_HAS_VX      (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
0093 #define MACHINE_HAS_TLB_GUEST   (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
0094 #define MACHINE_HAS_NX      (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
0095 #define MACHINE_HAS_GS      (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
0096 #define MACHINE_HAS_SCC     (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
0097 #define MACHINE_HAS_PCI_MIO (S390_lowcore.machine_flags & MACHINE_FLAG_PCI_MIO)
0098
0099 /*
0100  * Console mode. Override with conmode=
0101  */
0102 extern unsigned int console_mode;
0103 extern unsigned int console_devno;
0104 extern unsigned int console_irq;
0105
0106 #define CONSOLE_IS_UNDEFINED    (console_mode == 0)
0107 #define CONSOLE_IS_SCLP     (console_mode == 1)
0108 #define CONSOLE_IS_3215     (console_mode == 2)
0109 #define CONSOLE_IS_3270     (console_mode == 3)
0110 #define CONSOLE_IS_VT220    (console_mode == 4)
0111 #define CONSOLE_IS_HVC      (console_mode == 5)
0112 #define SET_CONSOLE_SCLP    do { console_mode = 1; } while (0)
0113 #define SET_CONSOLE_3215    do { console_mode = 2; } while (0)
0114 #define SET_CONSOLE_3270    do { console_mode = 3; } while (0)
0115 #define SET_CONSOLE_VT220   do { console_mode = 4; } while (0)
0116 #define SET_CONSOLE_HVC     do { console_mode = 5; } while (0)
0117
0118 #ifdef CONFIG_PFAULT
0119 extern int pfault_init(void);
0120 extern void pfault_fini(void);
0121 #else /* CONFIG_PFAULT */
0122 #define pfault_init()       ({-1;})
0123 #define pfault_fini()       do { } while (0)
0124 #endif /* CONFIG_PFAULT */
0125
0126 #ifdef CONFIG_VMCP
0127 void vmcp_cma_reserve(void);
0128 #else
0129 static inline void vmcp_cma_reserve(void) { }
0130 #endif
0131
0132 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
0133
0134 void cmma_init(void);
0135 void cmma_init_nodat(void);
0136
0137 extern void (*_machine_restart)(char *command);
0138 extern void (*_machine_halt)(void);
0139 extern void (*_machine_power_off)(void);
0140
0141 extern unsigned long __kaslr_offset;
0142 static inline unsigned long kaslr_offset(void)
0143 {
0144     return __kaslr_offset;
0145 }
0146
0147 extern int is_full_image;
0148
0149 struct initrd_data {
0150     unsigned long start;
0151     unsigned long size;
0152 };
0153 extern struct initrd_data initrd_data;
0154
0155 struct oldmem_data {
0156     unsigned long start;
0157     unsigned long size;
0158 };
0159 extern struct oldmem_data oldmem_data;
0160
0161 static inline u32 gen_lpswe(unsigned long addr)
0162 {
0163     BUILD_BUG_ON(addr > 0xfff);
0164     return 0xb2b20000 | addr;
0165 }
0166 #endif /* __ASSEMBLY__ */
0167 #endif /* _ASM_S390_SETUP_H */