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 #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 machine_desc *, 38 struct tag *, char **, 39 struct meminfo *); 40 void (*reserve)(void);/* reserve mem blocks */ 41 void (*map_io)(void);/* IO mapping function */ 42 void (*init_early)(void); 43 void (*init_irq)(void); 44 struct sys_timer *timer; /* system tick timer */ 45 void (*init_machine)(void); 46 #ifdef CONFIG_MULTI_IRQ_HANDLER 47 void (*handle_irq)(struct pt_regs *); 48 #endif 49 }; 50 51 /* 52 * Current machine - only accessible during boot. 53 */ 54 extern struct machine_desc *machine_desc; 55 56 /* 57 * Machine type table - also only accessible during boot 58 */ 59 extern struct machine_desc __arch_info_begin[], __arch_info_end[]; 60 #define for_each_machine_desc(p) \ 61 for (p = __arch_info_begin; p < __arch_info_end; p++) 62 63 /* 64 * Set of macros to define architecture features. This is built into 65 * a table by the linker. 66 */ 67 #define MACHINE_START(_type,_name) \ 68 static const struct machine_desc __mach_desc_##_type \ 69 __used \ 70 __attribute__((__section__(".arch.info.init"))) = { \ 71 .nr = MACH_TYPE_##_type, \ 72 .name = _name, 73 74 #define MACHINE_END \ 75 }; 76 77 #define DT_MACHINE_START(_name, _namestr) \ 78 static const struct machine_desc __mach_desc_##_name \ 79 __used \ 80 __attribute__((__section__(".arch.info.init"))) = { \ 81 .nr = ~0, \ 82 .name = _namestr, 83 84 #endif 85