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