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 pt_regs; 18 struct smp_operations; 19 #ifdef CONFIG_SMP 20 #define smp_ops(ops) (&(ops)) 21 #define smp_init_ops(ops) (&(ops)) 22 #else 23 #define smp_ops(ops) (struct smp_operations *)NULL 24 #define smp_init_ops(ops) (bool (*)(void))NULL 25 #endif 26 27 struct machine_desc { 28 unsigned int nr; /* architecture number */ 29 const char *name; /* architecture name */ 30 unsigned long atag_offset; /* tagged list (relative) */ 31 const char *const *dt_compat; /* array of device tree 32 * 'compatible' strings */ 33 34 unsigned int nr_irqs; /* number of IRQs */ 35 36 #ifdef CONFIG_ZONE_DMA 37 phys_addr_t dma_zone_size; /* size of DMA-able area */ 38 #endif 39 40 unsigned int video_start; /* start of video RAM */ 41 unsigned int video_end; /* end of video RAM */ 42 43 unsigned char reserve_lp0 :1; /* never has lp0 */ 44 unsigned char reserve_lp1 :1; /* never has lp1 */ 45 unsigned char reserve_lp2 :1; /* never has lp2 */ 46 enum reboot_mode reboot_mode; /* default restart mode */ 47 unsigned l2c_aux_val; /* L2 cache aux value */ 48 unsigned l2c_aux_mask; /* L2 cache aux mask */ 49 void (*l2c_write_sec)(unsigned long, unsigned); 50 struct smp_operations *smp; /* SMP operations */ 51 bool (*smp_init)(void); 52 void (*fixup)(struct tag *, char **); 53 void (*init_meminfo)(void); 54 void (*reserve)(void);/* reserve mem blocks */ 55 void (*map_io)(void);/* IO mapping function */ 56 void (*init_early)(void); 57 void (*init_irq)(void); 58 void (*init_time)(void); 59 void (*init_machine)(void); 60 void (*init_late)(void); 61 #ifdef CONFIG_MULTI_IRQ_HANDLER 62 void (*handle_irq)(struct pt_regs *); 63 #endif 64 void (*restart)(enum reboot_mode, const char *); 65 }; 66 67 /* 68 * Current machine - only accessible during boot. 69 */ 70 extern const struct machine_desc *machine_desc; 71 72 /* 73 * Machine type table - also only accessible during boot 74 */ 75 extern const struct machine_desc __arch_info_begin[], __arch_info_end[]; 76 #define for_each_machine_desc(p) \ 77 for (p = __arch_info_begin; p < __arch_info_end; p++) 78 79 /* 80 * Set of macros to define architecture features. This is built into 81 * a table by the linker. 82 */ 83 #define MACHINE_START(_type,_name) \ 84 static const struct machine_desc __mach_desc_##_type \ 85 __used \ 86 __attribute__((__section__(".arch.info.init"))) = { \ 87 .nr = MACH_TYPE_##_type, \ 88 .name = _name, 89 90 #define MACHINE_END \ 91 }; 92 93 #define DT_MACHINE_START(_name, _namestr) \ 94 static const struct machine_desc __mach_desc_##_name \ 95 __used \ 96 __attribute__((__section__(".arch.info.init"))) = { \ 97 .nr = ~0, \ 98 .name = _namestr, 99 100 #endif 101