include/asm-arm/mach/arch.h

   1 /*
   2  *  linux/include/asm-arm/mach/arch.h
   3  *
   4  *  Copyright (C) 2000 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * The size of struct machine_desc
  13  *   (for assembler code)
  14  */
  15 #define SIZEOF_MACHINE_DESC     52
  16
  17 #ifndef __ASSEMBLY__
  18
  19 struct tag;
  20 struct meminfo;
  21
  22 struct machine_desc {
  23         /*
  24          * Note! The first four elements are used
  25          * by assembler code in head-armv.S
  26          */
  27         unsigned int            nr;             /* architecture number  */
  28         unsigned int            phys_ram;       /* start of physical ram */
  29         unsigned int            phys_io;        /* start of physical io */
  30         unsigned int            io_pg_offst;    /* byte offset for io
  31                                                  * page tabe entry      */
  32
  33         const char              *name;          /* architecture name    */
  34         unsigned int            param_offset;   /* parameter page       */
  35
  36         unsigned int            video_start;    /* start of video RAM   */
  37         unsigned int            video_end;      /* end of video RAM     */
  38
  39         unsigned int            reserve_lp0 :1; /* never has lp0        */
  40         unsigned int            reserve_lp1 :1; /* never has lp1        */
  41         unsigned int            reserve_lp2 :1; /* never has lp2        */
  42         unsigned int            soft_reboot :1; /* soft reboot          */
  43         void                    (*fixup)(struct machine_desc *,
  44                                          struct tag *, char **,
  45                                          struct meminfo *);
  46         void                    (*map_io)(void);/* IO mapping function  */
  47         void                    (*init_irq)(void);
  48         void                    (*init_machine)(void);
  49 };
  50
  51 /*
  52  * Set of macros to define architecture features.  This is built into
  53  * a table by the linker.
  54  */
  55 #define MACHINE_START(_type,_name)              \
  56 const struct machine_desc __mach_desc_##_type   \
  57  __attribute__((__section__(".arch.info"))) = { \
  58         .nr             = MACH_TYPE_##_type,    \
  59         .name           = _name,
  60
  61 #define MAINTAINER(n)
  62
  63 #define BOOT_MEM(_pram,_pio,_vio)               \
  64         .phys_ram       = _pram,                \
  65         .phys_io        = _pio,                 \
  66         .io_pg_offst    = ((_vio)>>18)&0xfffc,
  67
  68 #define BOOT_PARAMS(_params)                    \
  69         .param_offset   = _params,
  70
  71 #define VIDEO(_start,_end)                      \
  72         .video_start    = _start,               \
  73         .video_end      = _end,
  74
  75 #define DISABLE_PARPORT(_n)                     \
  76         .reserve_lp##_n = 1,
  77
  78 #define SOFT_REBOOT                             \
  79         .soft_reboot    = 1,
  80
  81 #define FIXUP(_func)                            \
  82         .fixup          = _func,
  83
  84 #define MAPIO(_func)                            \
  85         .map_io         = _func,
  86
  87 #define INITIRQ(_func)                          \
  88         .init_irq       = _func,
  89
  90 #define INIT_MACHINE(_func)                     \
  91         .init_machine   = _func,
  92
  93 #define MACHINE_END                             \
  94 };
  95
  96 #endif