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         unsigned int            nr;             /* architecture number  */
  19         const char              *name;          /* architecture name    */
  20         unsigned long           boot_params;    /* tagged list          */
  21         const char              **dt_compat;    /* array of device tree
  22                                                  * 'compatible' strings */
  23
  24         unsigned int            nr_irqs;        /* number of IRQs */
  25
  26         unsigned int            video_start;    /* start of video RAM   */
  27         unsigned int            video_end;      /* end of video RAM     */
  28
  29         unsigned int            reserve_lp0 :1; /* never has lp0        */
  30         unsigned int            reserve_lp1 :1; /* never has lp1        */
  31         unsigned int            reserve_lp2 :1; /* never has lp2        */
  32         unsigned int            soft_reboot :1; /* soft reboot          */
  33         void                    (*fixup)(struct machine_desc *,
  34                                          struct tag *, char **,
  35                                          struct meminfo *);
  36         void                    (*reserve)(void);/* reserve mem blocks  */
  37         void                    (*map_io)(void);/* IO mapping function  */
  38         void                    (*init_early)(void);
  39         void                    (*init_irq)(void);
  40         struct sys_timer        *timer;         /* system tick timer    */
  41         void                    (*init_machine)(void);
  42 #ifdef CONFIG_MULTI_IRQ_HANDLER
  43         void                    (*handle_irq)(struct pt_regs *);
  44 #endif
  45 };
  46
  47 /*
  48  * Current machine - only accessible during boot.
  49  */
  50 extern struct machine_desc *machine_desc;
  51
  52 /*
  53  * Machine type table - also only accessible during boot
  54  */
  55 extern struct machine_desc __arch_info_begin[], __arch_info_end[];
  56 #define for_each_machine_desc(p)                        \
  57         for (p = __arch_info_begin; p < __arch_info_end; p++)
  58
  59 /*
  60  * Set of macros to define architecture features.  This is built into
  61  * a table by the linker.
  62  */
  63 #define MACHINE_START(_type,_name)                      \
  64 static const struct machine_desc __mach_desc_##_type    \
  65  __used                                                 \
  66  __attribute__((__section__(".arch.info.init"))) = {    \
  67         .nr             = MACH_TYPE_##_type,            \
  68         .name           = _name,
  69
  70 #define MACHINE_END                             \
  71 };
  72
  73 #endif