arch/arm/include/asm/mach/arch.h

   1 /*
   2  *  arch/arm/include/asm/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 #ifndef __ASSEMBLY__
  12
  13 struct tag;
  14 struct meminfo;
  15 struct sys_timer;
  16
  17 struct machine_desc {
  18         /*
  19          * Note! The first two elements are used
  20          * by assembler code in head.S, head-common.S
  21          */
  22         unsigned int            nr;             /* architecture number  */
  23         const char              *name;          /* architecture name    */
  24         unsigned long           boot_params;    /* tagged list          */
  25
  26         unsigned int            nr_irqs;        /* number of IRQs */
  27
  28         unsigned int            video_start;    /* start of video RAM   */
  29         unsigned int            video_end;      /* end of video RAM     */
  30
  31         unsigned int            reserve_lp0 :1; /* never has lp0        */
  32         unsigned int            reserve_lp1 :1; /* never has lp1        */
  33         unsigned int            reserve_lp2 :1; /* never has lp2        */
  34         unsigned int            soft_reboot :1; /* soft reboot          */
  35         void                    (*fixup)(struct machine_desc *,
  36                                          struct tag *, char **,
  37                                          struct meminfo *);
  38         void                    (*reserve)(void);/* reserve mem blocks  */
  39         void                    (*map_io)(void);/* IO mapping function  */
  40         void                    (*init_irq)(void);
  41         struct sys_timer        *timer;         /* system tick timer    */
  42         void                    (*init_machine)(void);
  43 #ifdef CONFIG_MULTI_IRQ_HANDLER
  44         void                    (*handle_irq)(struct pt_regs *);
  45 #endif
  46 };
  47
  48 /*
  49  * Current machine - only accessible during boot.
  50  */
  51 extern struct machine_desc *machine_desc;
  52
  53 /*
  54  * Set of macros to define architecture features.  This is built into
  55  * a table by the linker.
  56  */
  57 #define MACHINE_START(_type,_name)                      \
  58 static const struct machine_desc __mach_desc_##_type    \
  59  __used                                                 \
  60  __attribute__((__section__(".arch.info.init"))) = {    \
  61         .nr             = MACH_TYPE_##_type,            \
  62         .name           = _name,
  63
  64 #define MACHINE_END                             \
  65 };
  66
  67 #endif