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.
18 unsigned int nr
; /* architecture number */
19 const char *name
; /* architecture name */
20 unsigned long atag_offset
; /* tagged list (relative) */
21 const char **dt_compat
; /* array of device tree
22 * 'compatible' strings */
24 unsigned int nr_irqs
; /* number of IRQs */
26 #ifdef CONFIG_ZONE_DMA
27 unsigned long dma_zone_size
; /* size of DMA-able area */
30 unsigned int video_start
; /* start of video RAM */
31 unsigned int video_end
; /* end of video RAM */
33 unsigned char reserve_lp0
:1; /* never has lp0 */
34 unsigned char reserve_lp1
:1; /* never has lp1 */
35 unsigned char reserve_lp2
:1; /* never has lp2 */
36 char restart_mode
; /* default restart mode */
37 void (*fixup
)(struct tag
*, char **,
39 void (*reserve
)(void);/* reserve mem blocks */
40 void (*map_io
)(void);/* IO mapping function */
41 void (*init_early
)(void);
42 void (*init_irq
)(void);
43 struct sys_timer
*timer
; /* system tick timer */
44 void (*init_machine
)(void);
45 #ifdef CONFIG_MULTI_IRQ_HANDLER
46 void (*handle_irq
)(struct pt_regs
*);
48 void (*restart
)(char, const char *);
52 * Current machine - only accessible during boot.
54 extern struct machine_desc
*machine_desc
;
57 * Machine type table - also only accessible during boot
59 extern struct machine_desc __arch_info_begin
[], __arch_info_end
[];
60 #define for_each_machine_desc(p) \
61 for (p = __arch_info_begin; p < __arch_info_end; p++)
64 * Set of macros to define architecture features. This is built into
65 * a table by the linker.
67 #define MACHINE_START(_type,_name) \
68 static const struct machine_desc __mach_desc_##_type \
70 __attribute__((__section__(".arch.info.init"))) = { \
71 .nr = MACH_TYPE_##_type, \
77 #define DT_MACHINE_START(_name, _namestr) \
78 static const struct machine_desc __mach_desc_##_name \
80 __attribute__((__section__(".arch.info.init"))) = { \