LXR linux/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/const.h>
  10#include <uapi/asm/setup.h>
  11
  12#define EP_OFFSET               0x10008
  13#define EP_STRING               "S390EP"
  14#define PARMAREA                0x10400
  15#define PARMAREA_END            0x11000
  16
  17/*
  18 * Machine features detected in early.c
  19 */
  20
  21#define MACHINE_FLAG_VM         _BITUL(0)
  22#define MACHINE_FLAG_KVM        _BITUL(1)
  23#define MACHINE_FLAG_LPAR       _BITUL(2)
  24#define MACHINE_FLAG_DIAG9C     _BITUL(3)
  25#define MACHINE_FLAG_ESOP       _BITUL(4)
  26#define MACHINE_FLAG_IDTE       _BITUL(5)
  27#define MACHINE_FLAG_DIAG44     _BITUL(6)
  28#define MACHINE_FLAG_EDAT1      _BITUL(7)
  29#define MACHINE_FLAG_EDAT2      _BITUL(8)
  30#define MACHINE_FLAG_TOPOLOGY   _BITUL(10)
  31#define MACHINE_FLAG_TE         _BITUL(11)
  32#define MACHINE_FLAG_TLB_LC     _BITUL(12)
  33#define MACHINE_FLAG_VX         _BITUL(13)
  34#define MACHINE_FLAG_TLB_GUEST  _BITUL(14)
  35#define MACHINE_FLAG_NX         _BITUL(15)
  36#define MACHINE_FLAG_GS         _BITUL(16)
  37#define MACHINE_FLAG_SCC        _BITUL(17)
  38
  39#define LPP_MAGIC               _BITUL(31)
  40#define LPP_PID_MASK            _AC(0xffffffff, UL)
  41
  42/* Offsets to entry points in kernel/head.S  */
  43
  44#define STARTUP_NORMAL_OFFSET   0x10000
  45#define STARTUP_KDUMP_OFFSET    0x10010
  46
  47/* Offsets to parameters in kernel/head.S  */
  48
  49#define IPL_DEVICE_OFFSET       0x10400
  50#define INITRD_START_OFFSET     0x10408
  51#define INITRD_SIZE_OFFSET      0x10410
  52#define OLDMEM_BASE_OFFSET      0x10418
  53#define OLDMEM_SIZE_OFFSET      0x10420
  54#define COMMAND_LINE_OFFSET     0x10480
  55
  56#ifndef __ASSEMBLY__
  57
  58#include <asm/lowcore.h>
  59#include <asm/types.h>
  60
  61#define IPL_DEVICE      (*(unsigned long *)  (IPL_DEVICE_OFFSET))
  62#define INITRD_START    (*(unsigned long *)  (INITRD_START_OFFSET))
  63#define INITRD_SIZE     (*(unsigned long *)  (INITRD_SIZE_OFFSET))
  64#define OLDMEM_BASE     (*(unsigned long *)  (OLDMEM_BASE_OFFSET))
  65#define OLDMEM_SIZE     (*(unsigned long *)  (OLDMEM_SIZE_OFFSET))
  66#define COMMAND_LINE    ((char *)            (COMMAND_LINE_OFFSET))
  67
  68extern int memory_end_set;
  69extern unsigned long memory_end;
  70extern unsigned long max_physmem_end;
  71
  72extern void detect_memory_memblock(void);
  73
  74#define MACHINE_IS_VM           (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
  75#define MACHINE_IS_KVM          (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
  76#define MACHINE_IS_LPAR         (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
  77
  78#define MACHINE_HAS_DIAG9C      (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
  79#define MACHINE_HAS_ESOP        (S390_lowcore.machine_flags & MACHINE_FLAG_ESOP)
  80#define MACHINE_HAS_IDTE        (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
  81#define MACHINE_HAS_DIAG44      (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
  82#define MACHINE_HAS_EDAT1       (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
  83#define MACHINE_HAS_EDAT2       (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
  84#define MACHINE_HAS_TOPOLOGY    (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
  85#define MACHINE_HAS_TE          (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
  86#define MACHINE_HAS_TLB_LC      (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
  87#define MACHINE_HAS_VX          (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
  88#define MACHINE_HAS_TLB_GUEST   (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_GUEST)
  89#define MACHINE_HAS_NX          (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
  90#define MACHINE_HAS_GS          (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
  91#define MACHINE_HAS_SCC         (S390_lowcore.machine_flags & MACHINE_FLAG_SCC)
  92
  93/*
  94 * Console mode. Override with conmode=
  95 */
  96extern unsigned int console_mode;
  97extern unsigned int console_devno;
  98extern unsigned int console_irq;
  99
 100extern char vmhalt_cmd[];
 101extern char vmpoff_cmd[];
 102
 103#define CONSOLE_IS_UNDEFINED    (console_mode == 0)
 104#define CONSOLE_IS_SCLP         (console_mode == 1)
 105#define CONSOLE_IS_3215         (console_mode == 2)
 106#define CONSOLE_IS_3270         (console_mode == 3)
 107#define CONSOLE_IS_VT220        (console_mode == 4)
 108#define CONSOLE_IS_HVC          (console_mode == 5)
 109#define SET_CONSOLE_SCLP        do { console_mode = 1; } while (0)
 110#define SET_CONSOLE_3215        do { console_mode = 2; } while (0)
 111#define SET_CONSOLE_3270        do { console_mode = 3; } while (0)
 112#define SET_CONSOLE_VT220       do { console_mode = 4; } while (0)
 113#define SET_CONSOLE_HVC         do { console_mode = 5; } while (0)
 114
 115#ifdef CONFIG_PFAULT
 116extern int pfault_init(void);
 117extern void pfault_fini(void);
 118#else /* CONFIG_PFAULT */
 119#define pfault_init()           ({-1;})
 120#define pfault_fini()           do { } while (0)
 121#endif /* CONFIG_PFAULT */
 122
 123#ifdef CONFIG_VMCP
 124void vmcp_cma_reserve(void);
 125#else
 126static inline void vmcp_cma_reserve(void) { }
 127#endif
 128
 129void report_user_fault(struct pt_regs *regs, long signr, int is_mm_fault);
 130
 131void cmma_init(void);
 132void cmma_init_nodat(void);
 133
 134extern void (*_machine_restart)(char *command);
 135extern void (*_machine_halt)(void);
 136extern void (*_machine_power_off)(void);
 137
 138#else /* __ASSEMBLY__ */
 139
 140#define IPL_DEVICE      (IPL_DEVICE_OFFSET)
 141#define INITRD_START    (INITRD_START_OFFSET)
 142#define INITRD_SIZE     (INITRD_SIZE_OFFSET)
 143#define OLDMEM_BASE     (OLDMEM_BASE_OFFSET)
 144#define OLDMEM_SIZE     (OLDMEM_SIZE_OFFSET)
 145#define COMMAND_LINE    (COMMAND_LINE_OFFSET)
 146
 147#endif /* __ASSEMBLY__ */
 148#endif /* _ASM_S390_SETUP_H */
 149