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"))) = { \