2 * arch/arm/include/asm/mach/arch.h
4 * Copyright (C) 2000 Russell King
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.
16 struct smp_operations;
18 #define smp_ops(ops) (&(ops))
20 #define smp_ops(ops) (struct smp_operations *)NULL
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 */
30 unsigned int nr_irqs; /* number of IRQs */
32 #ifdef CONFIG_ZONE_DMA
33 unsigned long dma_zone_size; /* size of DMA-able area */
36 unsigned int video_start; /* start of video RAM */
37 unsigned int video_end; /* end of video RAM */
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 **,
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 *);
56 void (*restart)(char, const char *);
60 * Current machine - only accessible during boot.
62 extern struct machine_desc *machine_desc;
65 * Machine type table - also only accessible during boot
67 extern 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++)
72 * Set of macros to define architecture features. This is built into
73 * a table by the linker.
75 #define MACHINE_START(_type,_name) \
76 static const struct machine_desc __mach_desc_##_type \
78 __attribute__((__section__(".arch.info.init"))) = { \
79 .nr = MACH_TYPE_##_type, \
85 #define DT_MACHINE_START(_name, _namestr) \
86 static const struct machine_desc __mach_desc_##_name \
88 __attribute__((__section__(".arch.info.init"))) = { \