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#include <linux/types.h>
  12
  13#ifndef __ASSEMBLY__
  14#include <linux/reboot.h>
  15
  16struct tag;
  17struct pt_regs;
  18struct smp_operations;
  19#ifdef CONFIG_SMP
  20#define smp_ops(ops) (&(ops))
  21#define smp_init_ops(ops) (&(ops))
  22#else
  23#define smp_ops(ops) (struct smp_operations *)NULL
  24#define smp_init_ops(ops) (bool (*)(void))NULL
  25#endif
  26
  27struct machine_desc {
  28        unsigned int            nr;             /* architecture number  */
  29        const char              *name;          /* architecture name    */
  30        unsigned long           atag_offset;    /* tagged list (relative) */
  31        const char *const       *dt_compat;     /* array of device tree
  32                                                 * 'compatible' strings */
  33
  34        unsigned int            nr_irqs;        /* number of IRQs */
  35
  36#ifdef CONFIG_ZONE_DMA
  37        phys_addr_t             dma_zone_size;  /* size of DMA-able area */
  38#endif
  39
  40        unsigned int            video_start;    /* start of video RAM   */
  41        unsigned int            video_end;      /* end of video RAM     */
  42
  43        unsigned char           reserve_lp0 :1; /* never has lp0        */
  44        unsigned char           reserve_lp1 :1; /* never has lp1        */
  45        unsigned char           reserve_lp2 :1; /* never has lp2        */
  46        enum reboot_mode        reboot_mode;    /* default restart mode */
  47        unsigned                l2c_aux_val;    /* L2 cache aux value   */
  48        unsigned                l2c_aux_mask;   /* L2 cache aux mask    */
  49        void                    (*l2c_write_sec)(unsigned long, unsigned);
  50        const struct smp_operations     *smp;   /* SMP operations       */
  51        bool                    (*smp_init)(void);
  52        void                    (*fixup)(struct tag *, char **);
  53        void                    (*dt_fixup)(void);
  54        long long               (*pv_fixup)(void);
  55        void                    (*reserve)(void);/* reserve mem blocks  */
  56        void                    (*map_io)(void);/* IO mapping function  */
  57        void                    (*init_early)(void);
  58        void                    (*init_irq)(void);
  59        void                    (*init_time)(void);
  60        void                    (*init_machine)(void);
  61        void                    (*init_late)(void);
  62#ifdef CONFIG_MULTI_IRQ_HANDLER
  63        void                    (*handle_irq)(struct pt_regs *);
  64#endif
  65        void                    (*restart)(enum reboot_mode, const char *);
  66};
  67
  68/*
  69 * Current machine - only accessible during boot.
  70 */
  71extern const struct machine_desc *machine_desc;
  72
  73/*
  74 * Machine type table - also only accessible during boot
  75 */
  76extern const struct machine_desc __arch_info_begin[], __arch_info_end[];
  77#define for_each_machine_desc(p)                        \
  78        for (p = __arch_info_begin; p < __arch_info_end; p++)
  79
  80/*
  81 * Set of macros to define architecture features.  This is built into
  82 * a table by the linker.
  83 */
  84#define MACHINE_START(_type,_name)                      \
  85static const struct machine_desc __mach_desc_##_type    \
  86 __used                                                 \
  87 __attribute__((__section__(".arch.info.init"))) = {    \
  88        .nr             = MACH_TYPE_##_type,            \
  89        .name           = _name,
  90
  91#define MACHINE_END                             \
  92};
  93
  94#define DT_MACHINE_START(_name, _namestr)               \
  95static const struct machine_desc __mach_desc_##_name    \
  96 __used                                                 \
  97 __attribute__((__section__(".arch.info.init"))) = {    \
  98        .nr             = ~0,                           \
  99        .name           = _namestr,
 100
 101#endif
 102