include/asm-s390/setup.h

   1 /*
   2  *  include/asm-s390/setup.h
   3  *
   4  *  S390 version
   5  *    Copyright IBM Corp. 1999,2006
   6  */
   7
   8 #ifndef _ASM_S390_SETUP_H
   9 #define _ASM_S390_SETUP_H
  10
  11 #define COMMAND_LINE_SIZE       896
  12
  13 #ifdef __KERNEL__
  14
  15 #include <asm/types.h>
  16
  17 #define PARMAREA                0x10400
  18 #define MEMORY_CHUNKS           16      /* max 0x7fff */
  19 #define IPL_PARMBLOCK_ORIGIN    0x2000
  20
  21 #ifndef __ASSEMBLY__
  22
  23 #ifndef __s390x__
  24 #define IPL_DEVICE        (*(unsigned long *)  (0x10404))
  25 #define INITRD_START      (*(unsigned long *)  (0x1040C))
  26 #define INITRD_SIZE       (*(unsigned long *)  (0x10414))
  27 #else /* __s390x__ */
  28 #define IPL_DEVICE        (*(unsigned long *)  (0x10400))
  29 #define INITRD_START      (*(unsigned long *)  (0x10408))
  30 #define INITRD_SIZE       (*(unsigned long *)  (0x10410))
  31 #endif /* __s390x__ */
  32 #define COMMAND_LINE      ((char *)            (0x10480))
  33
  34 #define CHUNK_READ_WRITE 0
  35 #define CHUNK_READ_ONLY  1
  36
  37 struct mem_chunk {
  38         unsigned long addr;
  39         unsigned long size;
  40         unsigned long type;
  41 };
  42
  43 extern struct mem_chunk memory_chunk[];
  44
  45 /*
  46  * Machine features detected in head.S
  47  */
  48 extern unsigned long machine_flags;
  49
  50 #define MACHINE_IS_VM           (machine_flags & 1)
  51 #define MACHINE_IS_P390         (machine_flags & 4)
  52 #define MACHINE_HAS_MVPG        (machine_flags & 16)
  53 #define MACHINE_HAS_IDTE        (machine_flags & 128)
  54 #define MACHINE_HAS_DIAG9C      (machine_flags & 256)
  55
  56 #ifndef __s390x__
  57 #define MACHINE_HAS_IEEE        (machine_flags & 2)
  58 #define MACHINE_HAS_CSP         (machine_flags & 8)
  59 #define MACHINE_HAS_DIAG44      (1)
  60 #define MACHINE_HAS_MVCOS       (0)
  61 #else /* __s390x__ */
  62 #define MACHINE_HAS_IEEE        (1)
  63 #define MACHINE_HAS_CSP         (1)
  64 #define MACHINE_HAS_DIAG44      (machine_flags & 32)
  65 #define MACHINE_HAS_MVCOS       (machine_flags & 512)
  66 #endif /* __s390x__ */
  67
  68 #define MACHINE_HAS_SCLP        (!MACHINE_IS_P390)
  69
  70 /*
  71  * Console mode. Override with conmode=
  72  */
  73 extern unsigned int console_mode;
  74 extern unsigned int console_devno;
  75 extern unsigned int console_irq;
  76
  77 #define CONSOLE_IS_UNDEFINED    (console_mode == 0)
  78 #define CONSOLE_IS_SCLP         (console_mode == 1)
  79 #define CONSOLE_IS_3215         (console_mode == 2)
  80 #define CONSOLE_IS_3270         (console_mode == 3)
  81 #define SET_CONSOLE_SCLP        do { console_mode = 1; } while (0)
  82 #define SET_CONSOLE_3215        do { console_mode = 2; } while (0)
  83 #define SET_CONSOLE_3270        do { console_mode = 3; } while (0)
  84
  85 struct ipl_list_hdr {
  86         u32 len;
  87         u8  reserved1[3];
  88         u8  version;
  89         u32 blk0_len;
  90         u8  pbt;
  91         u8  flags;
  92         u16 reserved2;
  93 } __attribute__((packed));
  94
  95 struct ipl_block_fcp {
  96         u8  reserved1[313-1];
  97         u8  opt;
  98         u8  reserved2[3];
  99         u16 reserved3;
 100         u16 devno;
 101         u8  reserved4[4];
 102         u64 wwpn;
 103         u64 lun;
 104         u32 bootprog;
 105         u8  reserved5[12];
 106         u64 br_lba;
 107         u32 scp_data_len;
 108         u8  reserved6[260];
 109         u8  scp_data[];
 110 } __attribute__((packed));
 111
 112 struct ipl_block_ccw {
 113         u8  load_param[8];
 114         u8  reserved1[84];
 115         u8  reserved2[2];
 116         u16 devno;
 117         u8  vm_flags;
 118         u8  reserved3[3];
 119         u32 vm_parm_len;
 120 } __attribute__((packed));
 121
 122 struct ipl_parameter_block {
 123         struct ipl_list_hdr hdr;
 124         union {
 125                 struct ipl_block_fcp fcp;
 126                 struct ipl_block_ccw ccw;
 127         } ipl_info;
 128 } __attribute__((packed));
 129
 130 #define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
 131                               sizeof(struct ipl_block_fcp))
 132
 133 #define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
 134                               sizeof(struct ipl_block_ccw))
 135
 136 #define IPL_MAX_SUPPORTED_VERSION (0)
 137
 138 /*
 139  * IPL validity flags and parameters as detected in head.S
 140  */
 141 extern u32 ipl_flags;
 142 extern u16 ipl_devno;
 143
 144 void do_reipl(void);
 145
 146 enum {
 147         IPL_DEVNO_VALID = 1,
 148         IPL_PARMBLOCK_VALID = 2,
 149 };
 150
 151 #define IPL_PARMBLOCK_START     ((struct ipl_parameter_block *) \
 152                                  IPL_PARMBLOCK_ORIGIN)
 153 #define IPL_PARMBLOCK_SIZE      (IPL_PARMBLOCK_START->hdr.len)
 154
 155 #else /* __ASSEMBLY__ */
 156
 157 #ifndef __s390x__
 158 #define IPL_DEVICE        0x10404
 159 #define INITRD_START      0x1040C
 160 #define INITRD_SIZE       0x10414
 161 #else /* __s390x__ */
 162 #define IPL_DEVICE        0x10400
 163 #define INITRD_START      0x10408
 164 #define INITRD_SIZE       0x10410
 165 #endif /* __s390x__ */
 166 #define COMMAND_LINE      0x10480
 167
 168 #endif /* __ASSEMBLY__ */
 169 #endif /* __KERNEL__ */
 170 #endif /* _ASM_S390_SETUP_H */