arch/s390/include/asm/setup.h

   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 EP_OFFSET               0x10008
  14 #define EP_STRING               "S390EP"
  15 #define PARMAREA                0x10400
  16 #define EARLY_SCCB_OFFSET       0x11000
  17 #define HEAD_END                0x12000
  18
  19 /*
  20  * Machine features detected in early.c
  21  */
  22
  23 #define MACHINE_FLAG_VM         BIT(0)
  24 #define MACHINE_FLAG_KVM        BIT(1)
  25 #define MACHINE_FLAG_LPAR       BIT(2)
  26 #define MACHINE_FLAG_DIAG9C     BIT(3)
  27 #define MACHINE_FLAG_ESOP       BIT(4)
  28 #define MACHINE_FLAG_IDTE       BIT(5)
  29 #define MACHINE_FLAG_EDAT1      BIT(7)
  30 #define MACHINE_FLAG_EDAT2      BIT(8)
  31 #define MACHINE_FLAG_TOPOLOGY   BIT(10)
  32 #define MACHINE_FLAG_TE         BIT(11)
  33 #define MACHINE_FLAG_TLB_LC     BIT(12)
  34 #define MACHINE_FLAG_VX         BIT(13)
  35 #define MACHINE_FLAG_TLB_GUEST  BIT(14)
  36 #define MACHINE_FLAG_NX         BIT(15)
  37 #define MACHINE_FLAG_GS         BIT(16)
  38 #define MACHINE_FLAG_SCC        BIT(17)
  39
  40 #define LPP_MAGIC               BIT(31)
  41 #define LPP_PID_MASK            _AC(0xffffffff, UL)
  42
  43 /* Offsets to entry points in kernel/head.S  */
  44
  45 #define STARTUP_NORMAL_OFFSET   0x10000
  46 #define STARTUP_KDUMP_OFFSET    0x10010
  47
  48 /* Offsets to parameters in kernel/head.S  */
  49
  50 #define IPL_DEVICE_OFFSET       0x10400
  51 #define INITRD_START_OFFSET     0x10408
  52 #define INITRD_SIZE_OFFSET      0x10410
  53 #define OLDMEM_BASE_OFFSET      0x10418
  54 #define OLDMEM_SIZE_OFFSET      0x10420
  55 #define KERNEL_VERSION_OFFSET   0x10428
  56 #define COMMAND_LINE_OFFSET     0x10480
  57
  58 #ifndef __ASSEMBLY__
  59
  60 #include <asm/lowcore.h>
  61 #include <asm/types.h>
  62
  63 #define IPL_DEVICE      (*(unsigned long *)  (IPL_DEVICE_OFFSET))
  64 #define INITRD_START    (*(unsigned long *)  (INITRD_START_OFFSET))
  65 #define INITRD_SIZE     (*(unsigned long *)  (INITRD_SIZE_OFFSET))
  66 #define OLDMEM_BASE     (*(unsigned long *)  (OLDMEM_BASE_OFFSET))
  67 #define OLDMEM_SIZE     (*(unsigned long *)  (OLDMEM_SIZE_OFFSET))
  68 #define COMMAND_LINE    ((char *)            (COMMAND_LINE_OFFSET))
  69
  70 struct parmarea {
  71         unsigned long ipl_device;                       /* 0x10400 */
  72         unsigned long initrd_start;                     /* 0x10408 */
  73         unsigned long initrd_size;                      /* 0x10410 */
  74         unsigned long oldmem_base;                      /* 0x10418 */
  75         unsigned long oldmem_size;                      /* 0x10420 */
  76         unsigned long kernel_version;                   /* 0x10428 */
  77         char pad1[0x10480 - 0x10430];                   /* 0x10430 - 0x10480 */
  78         char command_line[ARCH_COMMAND_LINE_SIZE];      /* 0x10480 */
  79 };
  80
  81 extern unsigned int zlib_dfltcc_support;
  82 #define ZLIB_DFLTCC_DISABLED            0
  83 #define ZLIB_DFLTCC_FULL                1
  84 #define ZLIB_DFLTCC_DEFLATE_ONLY        2
  85 #define ZLIB_DFLTCC_INFLATE_ONLY        3
  86 #define ZLIB_DFLTCC_FULL_DEBUG          4
  87
  88 extern int noexec_disabled;
  89 extern unsigned long ident_map_size;
  90 extern unsigned long vmalloc_size;
  91
  92 /* The Write Back bit position in the physaddr is given by the SLPC PCI */
  93 extern unsigned long mio_wb_bit_mask;
  94
  95 #define MACHINE_IS_VM           (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
  96 #define MACHINE_IS_KVM          (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
  97 #define MACHINE_IS_LPAR         (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
  98
  99 #define MACHINE_HAS_DIAG9C      (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
 100 #define MACHINE_HAS_ESOP        (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
 101 #define MACHINE_HAS_IDTE        (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
 102 #define MACHINE_HAS_EDAT1       (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
 103 #define MACHINE_HAS_EDAT2       (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
 104 #define MACHINE_HAS_TOPOLOGY    (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
 105 #define MACHINE_HAS_TE          (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
 106 #define MACHINE_HAS_TLB_LC      (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
 107 #define MACHINE_HAS_VX          (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
 108 #define MACHINE_HAS_TLB_GUEST   (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
 109 #define MACHINE_HAS_NX          (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
 110 #define MACHINE_HAS_GS          (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
 111 #define MACHINE_HAS_SCC         (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
 112
 113 /*
 114  * Console mode. Override with conmode=
 115  */
 116 extern unsigned int console_mode;
 117 extern unsigned int console_devno;
 118 extern unsigned int console_irq;
 119
 120 #define CONSOLE_IS_UNDEFINED    (console_mode == 0)
 121 #define CONSOLE_IS_SCLP         (console_mode == 1)
 122 #define CONSOLE_IS_3215         (console_mode == 2)
 123 #define CONSOLE_IS_3270         (console_mode == 3)
 124 #define CONSOLE_IS_VT220        (console_mode == 4)
 125 #define CONSOLE_IS_HVC          (console_mode == 5)
 126 #define SET_CONSOLE_SCLP        do { console_mode = 1; } while (0)
 127 #define SET_CONSOLE_3215        do { console_mode = 2; } while (0)
 128 #define SET_CONSOLE_3270        do { console_mode = 3; } while (0)
 129 #define SET_CONSOLE_VT220       do { console_mode = 4; } while (0)
 130 #define SET_CONSOLE_HVC         do { console_mode = 5; } while (0)
 131
 132 #ifdef CONFIG_PFAULT
 133 extern int pfault_init(void);
 134 extern void pfault_fini(void);
 135 #else /* CONFIG_PFAULT */
 136 #define pfault_init()           ({-1;})
 137 #define pfault_fini()           do { } while (0)
 138 #endif /* CONFIG_PFAULT */
 139
 140 #ifdef CONFIG_VMCP
 141 void vmcp_cma_reserve(void);
 142 #else
 143 static inline void vmcp_cma_reserve(void) { }
 144 #endif
 145
 146 void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
 147
 148 void cmma_init(void);
 149 void cmma_init_nodat(void);
 150
 151 extern void (*_machine_restart)(char *command);
 152 extern void (*_machine_halt)(void);
 153 extern void (*_machine_power_off)(void);
 154
 155 extern unsigned long __kaslr_offset;
 156 static inline unsigned long kaslr_offset(void)
 157 {
 158         return __kaslr_offset;
 159 }
 160
 161 static inline u32 gen_lpswe(unsigned long addr)
 162 {
 163         BUILD_BUG_ON(addr > 0xfff);
 164         return 0xb2b20000 | addr;
 165 }
 166
 167 #else /* __ASSEMBLY__ */
 168
 169 #define IPL_DEVICE      (IPL_DEVICE_OFFSET)
 170 #define INITRD_START    (INITRD_START_OFFSET)
 171 #define INITRD_SIZE     (INITRD_SIZE_OFFSET)
 172 #define OLDMEM_BASE     (OLDMEM_BASE_OFFSET)
 173 #define OLDMEM_SIZE     (OLDMEM_SIZE_OFFSET)
 174 #define COMMAND_LINE    (COMMAND_LINE_OFFSET)
 175
 176 #endif /* __ASSEMBLY__ */
 177 #endif /* _ASM_S390_SETUP_H */