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 unsigned int nr; /* architecture number */ 19 const char *name; /* architecture name */ 20 unsigned long boot_params; /* tagged list */ 21 const char **dt_compat; /* array of device tree 22 * 'compatible' strings */ 23 24 unsigned int nr_irqs; /* number of IRQs */ 25 26 unsigned int video_start; /* start of video RAM */ 27 unsigned int video_end; /* end of video RAM */ 28 29 unsigned int reserve_lp0 :1; /* never has lp0 */ 30 unsigned int reserve_lp1 :1; /* never has lp1 */ 31 unsigned int reserve_lp2 :1; /* never has lp2 */ 32 unsigned int soft_reboot :1; /* soft reboot */ 33 void (*fixup)(struct machine_desc *, 34 struct tag *, char **, 35 struct meminfo *); 36 void (*reserve)(void);/* reserve mem blocks */ 37 void (*map_io)(void);/* IO mapping function */ 38 void (*init_early)(void); 39 void (*init_irq)(void); 40 struct sys_timer *timer; /* system tick timer */ 41 void (*init_machine)(void); 42 #ifdef CONFIG_MULTI_IRQ_HANDLER 43 void (*handle_irq)(struct pt_regs *); 44 #endif 45 }; 46 47 /* 48 * Current machine - only accessible during boot. 49 */ 50 extern struct machine_desc *machine_desc; 51 52 /* 53 * Machine type table - also only accessible during boot 54 */ 55 extern struct machine_desc __arch_info_begin[], __arch_info_end[]; 56 #define for_each_machine_desc(p) \ 57 for (p = __arch_info_begin; p < __arch_info_end; p++) 58 59 /* 60 * Set of macros to define architecture features. This is built into 61 * a table by the linker. 62 */ 63 #define MACHINE_START(_type,_name) \ 64 static const struct machine_desc __mach_desc_##_type \ 65 __used \ 66 __attribute__((__section__(".arch.info.init"))) = { \ 67 .nr = MACH_TYPE_##_type, \ 68 .name = _name, 69 70 #define MACHINE_END \ 71 }; 72 73 #endif 74