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 #ifndef __ASSEMBLY__ 12 13 struct tag; 14 struct meminfo; 15 struct sys_timer; 16 17 struct machine_desc { 18 /* 19 * Note! The first four elements are used 20 * by assembler code in head.S, head-common.S 21 */ 22 unsigned int nr; /* architecture number */ 23 unsigned int nr_irqs; /* number of IRQs */ 24 unsigned int phys_io; /* start of physical io */ 25 unsigned int io_pg_offst; /* byte offset for io 26 * page tabe entry */ 27 28 const char *name; /* architecture name */ 29 unsigned long boot_params; /* tagged list */ 30 31 unsigned int video_start; /* start of video RAM */ 32 unsigned int video_end; /* end of video RAM */ 33 34 unsigned int reserve_lp0 :1; /* never has lp0 */ 35 unsigned int reserve_lp1 :1; /* never has lp1 */ 36 unsigned int reserve_lp2 :1; /* never has lp2 */ 37 unsigned int soft_reboot :1; /* soft reboot */ 38 void (*fixup)(struct machine_desc *, 39 struct tag *, char **, 40 struct meminfo *); 41 void (*reserve)(void);/* reserve mem blocks */ 42 void (*map_io)(void);/* IO mapping function */ 43 void (*init_irq)(void); 44 struct sys_timer *timer; /* system tick timer */ 45 void (*init_machine)(void); 46 }; 47 48 /* 49 * Set of macros to define architecture features. This is built into 50 * a table by the linker. 51 */ 52 #define MACHINE_START(_type,_name) \ 53 static const struct machine_desc __mach_desc_##_type \ 54 __used \ 55 __attribute__((__section__(".arch.info.init"))) = { \ 56 .nr = MACH_TYPE_##_type, \ 57 .name = _name, 58 59 #define MACHINE_END \ 60 }; 61 62 #endif 63