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 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_IDTE        (machine_flags & 128)
  42 #define MACHINE_HAS_DIAG9C      (machine_flags & 256)
  43
  44 #ifndef __s390x__
  45 #define MACHINE_HAS_IEEE        (machine_flags & 2)
  46 #define MACHINE_HAS_CSP         (machine_flags & 8)
  47 #define MACHINE_HAS_DIAG44      (1)
  48 #define MACHINE_HAS_MVCOS       (0)
  49 #else /* __s390x__ */
  50 #define MACHINE_HAS_IEEE        (1)
  51 #define MACHINE_HAS_CSP         (1)
  52 #define MACHINE_HAS_DIAG44      (machine_flags & 32)
  53 #define MACHINE_HAS_MVCOS       (machine_flags & 512)
  54 #endif /* __s390x__ */
  55
  56
  57 #define MACHINE_HAS_SCLP        (!MACHINE_IS_P390)
  58
  59 /*
  60  * Console mode. Override with conmode=
  61  */
  62 extern unsigned int console_mode;
  63 extern unsigned int console_devno;
  64 extern unsigned int console_irq;
  65
  66 #define CONSOLE_IS_UNDEFINED    (console_mode == 0)
  67 #define CONSOLE_IS_SCLP         (console_mode == 1)
  68 #define CONSOLE_IS_3215         (console_mode == 2)
  69 #define CONSOLE_IS_3270         (console_mode == 3)
  70 #define SET_CONSOLE_SCLP        do { console_mode = 1; } while (0)
  71 #define SET_CONSOLE_3215        do { console_mode = 2; } while (0)
  72 #define SET_CONSOLE_3270        do { console_mode = 3; } while (0)
  73
  74
  75 struct ipl_list_hdr {
  76         u32 len;
  77         u8  reserved1[3];
  78         u8  version;
  79         u32 blk0_len;
  80         u8  pbt;
  81         u8  flags;
  82         u16 reserved2;
  83 } __attribute__((packed));
  84
  85 struct ipl_block_fcp {
  86         u8  reserved1[313-1];
  87         u8  opt;
  88         u8  reserved2[3];
  89         u16 reserved3;
  90         u16 devno;
  91         u8  reserved4[4];
  92         u64 wwpn;
  93         u64 lun;
  94         u32 bootprog;
  95         u8  reserved5[12];
  96         u64 br_lba;
  97         u32 scp_data_len;
  98         u8  reserved6[260];
  99         u8  scp_data[];
 100 } __attribute__((packed));
 101
 102 struct ipl_block_ccw {
 103         u8  load_param[8];
 104         u8  reserved1[84];
 105         u8  reserved2[2];
 106         u16 devno;
 107         u8  vm_flags;
 108         u8  reserved3[3];
 109         u32 vm_parm_len;
 110 } __attribute__((packed));
 111
 112 struct ipl_parameter_block {
 113         struct ipl_list_hdr hdr;
 114         union {
 115                 struct ipl_block_fcp fcp;
 116                 struct ipl_block_ccw ccw;
 117         } ipl_info;
 118 } __attribute__((packed));
 119
 120 #define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
 121                               sizeof(struct ipl_block_fcp))
 122
 123 #define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
 124                               sizeof(struct ipl_block_ccw))
 125
 126 #define IPL_MAX_SUPPORTED_VERSION (0)
 127
 128 /*
 129  * IPL validity flags and parameters as detected in head.S
 130  */
 131 extern u32 ipl_flags;
 132 extern u16 ipl_devno;
 133
 134 void do_reipl(void);
 135
 136 enum {
 137         IPL_DEVNO_VALID = 1,
 138         IPL_PARMBLOCK_VALID = 2,
 139 };
 140
 141 #define IPL_PARMBLOCK_START     ((struct ipl_parameter_block *) \
 142                                  IPL_PARMBLOCK_ORIGIN)
 143 #define IPL_PARMBLOCK_SIZE      (IPL_PARMBLOCK_START->hdr.len)
 144
 145 #else /* __ASSEMBLY__ */
 146
 147 #ifndef __s390x__
 148 #define IPL_DEVICE        0x10404
 149 #define INITRD_START      0x1040C
 150 #define INITRD_SIZE       0x10414
 151 #else /* __s390x__ */
 152 #define IPL_DEVICE        0x10400
 153 #define INITRD_START      0x10408
 154 #define INITRD_SIZE       0x10410
 155 #endif /* __s390x__ */
 156 #define COMMAND_LINE      0x10480
 157
 158 #endif /* __ASSEMBLY__ */
 159 #endif /* __KERNEL__ */
 160 #endif /* _ASM_S390_SETUP_H */