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 atag_offset; /* tagged list (relative) */ 21 const char **dt_compat; /* array of device tree 22 * 'compatible' strings */ 23 24 unsigned int nr_irqs; /* number of IRQs */ 25 26 #ifdef CONFIG_ZONE_DMA 27 unsigned long dma_zone_size; /* size of DMA-able area */ 28 #endif 29 30 unsigned int video_start; /* start of video RAM */ 31 unsigned int video_end; /* end of video RAM */ 32 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 tag *, char **, 38 struct meminfo *); 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 *); 47 #endif 48 }; 49 50 /* 51 * Current machine - only accessible during boot. 52 */ 53 extern struct machine_desc *machine_desc; 54 55 /* 56 * Machine type table - also only accessible during boot 57 */ 58 extern struct machine_desc __arch_info_begin[], __arch_info_end[]; 59 #define for_each_machine_desc(p) \ 60 for (p = __arch_info_begin; p < __arch_info_end; p++) 61 62 /* 63 * Set of macros to define architecture features. This is built into 64 * a table by the linker. 65 */ 66 #define MACHINE_START(_type,_name) \ 67 static const struct machine_desc __mach_desc_##_type \ 68 __used \ 69 __attribute__((__section__(".arch.info.init"))) = { \ 70 .nr = MACH_TYPE_##_type, \ 71 .name = _name, 72 73 #define MACHINE_END \ 74 }; 75 76 #define DT_MACHINE_START(_name, _namestr) \ 77 static const struct machine_desc __mach_desc_##_name \ 78 __used \ 79 __attribute__((__section__(".arch.info.init"))) = { \ 80 .nr = ~0, \ 81 .name = _namestr, 82 83 #endif 84