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 #include <linux/types.h> 12 13 #ifndef __ASSEMBLY__ 14 #include <linux/reboot.h> 15 16 struct tag; 17 struct meminfo; 18 struct pt_regs; 19 struct smp_operations; 20 #ifdef CONFIG_SMP 21 #define smp_ops(ops) (&(ops)) 22 #define smp_init_ops(ops) (&(ops)) 23 #else 24 #define smp_ops(ops) (struct smp_operations *)NULL 25 #define smp_init_ops(ops) (bool (*)(void))NULL 26 #endif 27 28 struct machine_desc { 29 unsigned int nr; /* architecture number */ 30 const char *name; /* architecture name */ 31 unsigned long atag_offset; /* tagged list (relative) */ 32 const char *const *dt_compat; /* array of device tree 33 * 'compatible' strings */ 34 35 unsigned int nr_irqs; /* number of IRQs */ 36 37 #ifdef CONFIG_ZONE_DMA 38 phys_addr_t dma_zone_size; /* size of DMA-able area */ 39 #endif 40 41 unsigned int video_start; /* start of video RAM */ 42 unsigned int video_end; /* end of video RAM */ 43 44 unsigned char reserve_lp0 :1; /* never has lp0 */ 45 unsigned char reserve_lp1 :1; /* never has lp1 */ 46 unsigned char reserve_lp2 :1; /* never has lp2 */ 47 enum reboot_mode reboot_mode; /* default restart mode */ 48 struct smp_operations *smp; /* SMP operations */ 49 bool (*smp_init)(void); 50 void (*fixup)(struct tag *, char **, 51 struct meminfo *); 52 void (*reserve)(void);/* reserve mem blocks */ 53 void (*map_io)(void);/* IO mapping function */ 54 void (*init_early)(void); 55 void (*init_irq)(void); 56 void (*init_time)(void); 57 void (*init_machine)(void); 58 void (*init_late)(void); 59 #ifdef CONFIG_MULTI_IRQ_HANDLER 60 void (*handle_irq)(struct pt_regs *); 61 #endif 62 void (*restart)(enum reboot_mode, const char *); 63 }; 64 65 /* 66 * Current machine - only accessible during boot. 67 */ 68 extern const struct machine_desc *machine_desc; 69 70 /* 71 * Machine type table - also only accessible during boot 72 */ 73 extern const struct machine_desc __arch_info_begin[], __arch_info_end[]; 74 #define for_each_machine_desc(p) \ 75 for (p = __arch_info_begin; p < __arch_info_end; p++) 76 77 /* 78 * Set of macros to define architecture features. This is built into 79 * a table by the linker. 80 */ 81 #define MACHINE_START(_type,_name) \ 82 static const struct machine_desc __mach_desc_##_type \ 83 __used \ 84 __attribute__((__section__(".arch.info.init"))) = { \ 85 .nr = MACH_TYPE_##_type, \ 86 .name = _name, 87 88 #define MACHINE_END \ 89 }; 90 91 #define DT_MACHINE_START(_name, _namestr) \ 92 static const struct machine_desc __mach_desc_##_name \ 93 __used \ 94 __attribute__((__section__(".arch.info.init"))) = { \ 95 .nr = ~0, \ 96 .name = _namestr, 97 98 #endif 99