2 * linux/include/asm-arm/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 * Note! The first four elements are used
19 * by assembler code in head-armv.S
21 unsigned int nr; /* architecture number */
22 unsigned int phys_ram; /* start of physical ram */
23 unsigned int phys_io; /* start of physical io */
24 unsigned int io_pg_offst; /* byte offset for io
27 const char *name; /* architecture name */
28 unsigned int param_offset; /* parameter page */
30 unsigned int video_start; /* start of video RAM */
31 unsigned int video_end; /* end of video RAM */
33 unsigned int reserve_lp0 :1; /* never has lp0 */
34 unsigned int reserve_lp1 :1; /* never has lp1 */
35 unsigned int reserve_lp2 :1; /* never has lp2 */
36 unsigned int soft_reboot :1; /* soft reboot */
37 void (*fixup)(struct machine_desc *,
38 struct tag *, char **,
40 void (*map_io)(void);/* IO mapping function */
41 void (*init_irq)(void);
42 void (*init_time)(void);
43 void (*init_machine)(void);
47 * Set of macros to define architecture features. This is built into
48 * a table by the linker.
50 #define MACHINE_START(_type,_name) \
51 const struct machine_desc __mach_desc_##_type \
52 __attribute__((__section__(".arch.info"))) = { \
53 .nr = MACH_TYPE_##_type, \
58 #define BOOT_MEM(_pram,_pio,_vio) \
61 .io_pg_offst = ((_vio)>>18)&0xfffc,
63 #define BOOT_PARAMS(_params) \
64 .param_offset = _params,
66 #define VIDEO(_start,_end) \
67 .video_start = _start, \
70 #define DISABLE_PARPORT(_n) \
76 #define FIXUP(_func) \
79 #define MAPIO(_func) \
82 #define INITIRQ(_func) \
85 #define INITTIME(_func) \
88 #define INIT_MACHINE(_func) \
89 .init_machine = _func,