include/asm-s390/setup.h

   1 /*
   2  *  include/asm-s390/setup.h
   3  *
   4  *  S390 version
   5  *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
   6  */
   7
   8 #ifndef _ASM_S390_SETUP_H
   9 #define _ASM_S390_SETUP_H
  10
  11 #ifdef __KERNEL__
  12
  13 #include <asm/types.h>
  14
  15 #define PARMAREA                0x10400
  16 #define COMMAND_LINE_SIZE       896
  17 #define RAMDISK_ORIGIN          0x800000
  18 #define RAMDISK_SIZE            0x800000
  19 #define MEMORY_CHUNKS           16      /* max 0x7fff */
  20 #define IPL_PARMBLOCK_ORIGIN    0x2000
  21
  22 #ifndef __ASSEMBLY__
  23
  24 #ifndef __s390x__
  25 #define IPL_DEVICE        (*(unsigned long *)  (0x10404))
  26 #define INITRD_START      (*(unsigned long *)  (0x1040C))
  27 #define INITRD_SIZE       (*(unsigned long *)  (0x10414))
  28 #else /* __s390x__ */
  29 #define IPL_DEVICE        (*(unsigned long *)  (0x10400))
  30 #define INITRD_START      (*(unsigned long *)  (0x10408))
  31 #define INITRD_SIZE       (*(unsigned long *)  (0x10410))
  32 #endif /* __s390x__ */
  33 #define COMMAND_LINE      ((char *)            (0x10480))
  34
  35 /*
  36  * Machine features detected in head.S
  37  */
  38 extern unsigned long machine_flags;
  39
  40 #define MACHINE_IS_VM           (machine_flags & 1)
  41 #define MACHINE_IS_P390         (machine_flags & 4)
  42 #define MACHINE_HAS_MVPG        (machine_flags & 16)
  43 #define MACHINE_HAS_DIAG44      (machine_flags & 32)
  44 #define MACHINE_HAS_IDTE        (machine_flags & 128)
  45
  46 #ifndef __s390x__
  47 #define MACHINE_HAS_IEEE        (machine_flags & 2)
  48 #define MACHINE_HAS_CSP         (machine_flags & 8)
  49 #else /* __s390x__ */
  50 #define MACHINE_HAS_IEEE        (1)
  51 #define MACHINE_HAS_CSP         (1)
  52 #endif /* __s390x__ */
  53
  54
  55 #define MACHINE_HAS_SCLP        (!MACHINE_IS_P390)
  56
  57 /*
  58  * Console mode. Override with conmode=
  59  */
  60 extern unsigned int console_mode;
  61 extern unsigned int console_devno;
  62 extern unsigned int console_irq;
  63
  64 #define CONSOLE_IS_UNDEFINED    (console_mode == 0)
  65 #define CONSOLE_IS_SCLP         (console_mode == 1)
  66 #define CONSOLE_IS_3215         (console_mode == 2)
  67 #define CONSOLE_IS_3270         (console_mode == 3)
  68 #define SET_CONSOLE_SCLP        do { console_mode = 1; } while (0)
  69 #define SET_CONSOLE_3215        do { console_mode = 2; } while (0)
  70 #define SET_CONSOLE_3270        do { console_mode = 3; } while (0)
  71
  72 struct ipl_list_header {
  73         u32 length;
  74         u8  reserved[3];
  75         u8  version;
  76 } __attribute__((packed));
  77
  78 struct ipl_block_fcp {
  79         u32 length;
  80         u8  pbt;
  81         u8  reserved1[322-1];
  82         u16 devno;
  83         u8  reserved2[4];
  84         u64 wwpn;
  85         u64 lun;
  86         u32 bootprog;
  87         u8  reserved3[12];
  88         u64 br_lba;
  89         u32 scp_data_len;
  90         u8  reserved4[260];
  91         u8  scp_data[];
  92 } __attribute__((packed));
  93
  94 struct ipl_parameter_block {
  95         union {
  96                 u32 length;
  97                 struct ipl_list_header header;
  98         } hdr;
  99         struct ipl_block_fcp fcp;
 100 } __attribute__((packed));
 101
 102 #define IPL_MAX_SUPPORTED_VERSION (0)
 103
 104 #define IPL_TYPE_FCP (0)
 105
 106 /*
 107  * IPL validity flags and parameters as detected in head.S
 108  */
 109 extern u32 ipl_parameter_flags;
 110 extern u16 ipl_devno;
 111
 112 #define IPL_DEVNO_VALID         (ipl_parameter_flags & 1)
 113 #define IPL_PARMBLOCK_VALID     (ipl_parameter_flags & 2)
 114
 115 #define IPL_PARMBLOCK_START     ((struct ipl_parameter_block *) \
 116                                  IPL_PARMBLOCK_ORIGIN)
 117 #define IPL_PARMBLOCK_SIZE      (IPL_PARMBLOCK_START->hdr.length)
 118
 119 #else /* __ASSEMBLY__ */
 120
 121 #ifndef __s390x__
 122 #define IPL_DEVICE        0x10404
 123 #define INITRD_START      0x1040C
 124 #define INITRD_SIZE       0x10414
 125 #else /* __s390x__ */
 126 #define IPL_DEVICE        0x10400
 127 #define INITRD_START      0x10408
 128 #define INITRD_SIZE       0x10410
 129 #endif /* __s390x__ */
 130 #define COMMAND_LINE      0x10480
 131
 132 #endif /* __ASSEMBLY__ */
 133 #endif /* __KERNEL__ */
 134 #endif /* _ASM_S390_SETUP_H */