LXR linux/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
  13struct tag;
  14struct meminfo;
  15struct pt_regs;
  16struct smp_operations;
  17#ifdef CONFIG_SMP
  18#define smp_ops(ops) (&(ops))
  19#else
  20#define smp_ops(ops) (struct smp_operations *)NULL
  21#endif
  22
  23struct machine_desc {
  24        unsigned int            nr;             /* architecture number  */
  25        const char              *name;          /* architecture name    */
  26        unsigned long           atag_offset;    /* tagged list (relative) */
  27        const char *const       *dt_compat;     /* array of device tree
  28                                                 * 'compatible' strings */
  29
  30        unsigned int            nr_irqs;        /* number of IRQs */
  31
  32#ifdef CONFIG_ZONE_DMA
  33        unsigned long           dma_zone_size;  /* size of DMA-able area */
  34#endif
  35
  36        unsigned int            video_start;    /* start of video RAM   */
  37        unsigned int            video_end;      /* end of video RAM     */
  38
  39        unsigned char           reserve_lp0 :1; /* never has lp0        */
  40        unsigned char           reserve_lp1 :1; /* never has lp1        */
  41        unsigned char           reserve_lp2 :1; /* never has lp2        */
  42        char                    restart_mode;   /* default restart mode */
  43        struct smp_operations   *smp;           /* SMP operations       */
  44        void                    (*fixup)(struct tag *, char **,
  45                                         struct meminfo *);
  46        void                    (*reserve)(void);/* reserve mem blocks  */
  47        void                    (*map_io)(void);/* IO mapping function  */
  48        void                    (*init_early)(void);
  49        void                    (*init_irq)(void);
  50        void                    (*init_time)(void);
  51        void                    (*init_machine)(void);
  52        void                    (*init_late)(void);
  53#ifdef CONFIG_MULTI_IRQ_HANDLER
  54        void                    (*handle_irq)(struct pt_regs *);
  55#endif
  56        void                    (*restart)(char, const char *);
  57};
  58
  59/*
  60 * Current machine - only accessible during boot.
  61 */
  62extern struct machine_desc *machine_desc;
  63
  64/*
  65 * Machine type table - also only accessible during boot
  66 */
  67extern struct machine_desc __arch_info_begin[], __arch_info_end[];
  68#define for_each_machine_desc(p)                        \
  69        for (p = __arch_info_begin; p < __arch_info_end; p++)
  70
  71/*
  72 * Set of macros to define architecture features.  This is built into
  73 * a table by the linker.
  74 */
  75#define MACHINE_START(_type,_name)                      \
  76static const struct machine_desc __mach_desc_##_type    \
  77 __used                                                 \
  78 __attribute__((__section__(".arch.info.init"))) = {    \
  79        .nr             = MACH_TYPE_##_type,            \
  80        .name           = _name,
  81
  82#define MACHINE_END                             \
  83};
  84
  85#define DT_MACHINE_START(_name, _namestr)               \
  86static const struct machine_desc __mach_desc_##_name    \
  87 __used                                                 \
  88 __attribute__((__section__(".arch.info.init"))) = {    \
  89        .nr             = ~0,                           \
  90        .name           = _namestr,
  91
  92#endif
  93