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 #ifdef CONFIG_S390_SWITCH_AMODE
  46 extern unsigned int switch_amode;
  47 #else
  48 #define switch_amode    (0)
  49 #endif
  50
  51 #ifdef CONFIG_S390_EXEC_PROTECT
  52 extern unsigned int s390_noexec;
  53 #else
  54 #define s390_noexec     (0)
  55 #endif
  56
  57 /*
  58  * Machine features detected in head.S
  59  */
  60 extern unsigned long machine_flags;
  61
  62 #define MACHINE_IS_VM           (machine_flags & 1)
  63 #define MACHINE_IS_P390         (machine_flags & 4)
  64 #define MACHINE_HAS_MVPG        (machine_flags & 16)
  65 #define MACHINE_HAS_IDTE        (machine_flags & 128)
  66 #define MACHINE_HAS_DIAG9C      (machine_flags & 256)
  67
  68 #ifndef __s390x__
  69 #define MACHINE_HAS_IEEE        (machine_flags & 2)
  70 #define MACHINE_HAS_CSP         (machine_flags & 8)
  71 #define MACHINE_HAS_DIAG44      (1)
  72 #define MACHINE_HAS_MVCOS       (0)
  73 #else /* __s390x__ */
  74 #define MACHINE_HAS_IEEE        (1)
  75 #define MACHINE_HAS_CSP         (1)
  76 #define MACHINE_HAS_DIAG44      (machine_flags & 32)
  77 #define MACHINE_HAS_MVCOS       (machine_flags & 512)
  78 #endif /* __s390x__ */
  79
  80 #define MACHINE_HAS_SCLP        (!MACHINE_IS_P390)
  81
  82 /*
  83  * Console mode. Override with conmode=
  84  */
  85 extern unsigned int console_mode;
  86 extern unsigned int console_devno;
  87 extern unsigned int console_irq;
  88
  89 extern char vmhalt_cmd[];
  90 extern char vmpoff_cmd[];
  91
  92 #define CONSOLE_IS_UNDEFINED    (console_mode == 0)
  93 #define CONSOLE_IS_SCLP         (console_mode == 1)
  94 #define CONSOLE_IS_3215         (console_mode == 2)
  95 #define CONSOLE_IS_3270         (console_mode == 3)
  96 #define SET_CONSOLE_SCLP        do { console_mode = 1; } while (0)
  97 #define SET_CONSOLE_3215        do { console_mode = 2; } while (0)
  98 #define SET_CONSOLE_3270        do { console_mode = 3; } while (0)
  99
 100 struct ipl_list_hdr {
 101         u32 len;
 102         u8  reserved1[3];
 103         u8  version;
 104         u32 blk0_len;
 105         u8  pbt;
 106         u8  flags;
 107         u16 reserved2;
 108 } __attribute__((packed));
 109
 110 struct ipl_block_fcp {
 111         u8  reserved1[313-1];
 112         u8  opt;
 113         u8  reserved2[3];
 114         u16 reserved3;
 115         u16 devno;
 116         u8  reserved4[4];
 117         u64 wwpn;
 118         u64 lun;
 119         u32 bootprog;
 120         u8  reserved5[12];
 121         u64 br_lba;
 122         u32 scp_data_len;
 123         u8  reserved6[260];
 124         u8  scp_data[];
 125 } __attribute__((packed));
 126
 127 struct ipl_block_ccw {
 128         u8  load_param[8];
 129         u8  reserved1[84];
 130         u8  reserved2[2];
 131         u16 devno;
 132         u8  vm_flags;
 133         u8  reserved3[3];
 134         u32 vm_parm_len;
 135 } __attribute__((packed));
 136
 137 struct ipl_parameter_block {
 138         struct ipl_list_hdr hdr;
 139         union {
 140                 struct ipl_block_fcp fcp;
 141                 struct ipl_block_ccw ccw;
 142         } ipl_info;
 143 } __attribute__((packed));
 144
 145 #define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
 146                               sizeof(struct ipl_block_fcp))
 147
 148 #define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
 149                               sizeof(struct ipl_block_ccw))
 150
 151 #define IPL_MAX_SUPPORTED_VERSION (0)
 152
 153 /*
 154  * IPL validity flags and parameters as detected in head.S
 155  */
 156 extern u32 ipl_flags;
 157 extern u16 ipl_devno;
 158
 159 extern void do_reipl(void);
 160 extern void ipl_save_parameters(void);
 161
 162 enum {
 163         IPL_DEVNO_VALID = 1,
 164         IPL_PARMBLOCK_VALID = 2,
 165         IPL_NSS_VALID = 4,
 166 };
 167
 168 #define NSS_NAME_SIZE   8
 169
 170 extern char kernel_nss_name[];
 171
 172 #define IPL_PARMBLOCK_START     ((struct ipl_parameter_block *) \
 173                                  IPL_PARMBLOCK_ORIGIN)
 174 #define IPL_PARMBLOCK_SIZE      (IPL_PARMBLOCK_START->hdr.len)
 175
 176 #else /* __ASSEMBLY__ */
 177
 178 #ifndef __s390x__
 179 #define IPL_DEVICE        0x10404
 180 #define INITRD_START      0x1040C
 181 #define INITRD_SIZE       0x10414
 182 #else /* __s390x__ */
 183 #define IPL_DEVICE        0x10400
 184 #define INITRD_START      0x10408
 185 #define INITRD_SIZE       0x10410
 186 #endif /* __s390x__ */
 187 #define COMMAND_LINE      0x10480
 188
 189 #endif /* __ASSEMBLY__ */
 190 #endif /* __KERNEL__ */
 191 #endif /* _ASM_S390_SETUP_H */