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