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| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
|---|---|
| 2 | /* |
| 3 | * arch/arm/include/asm/mach/arch.h |
| 4 | * |
| 5 | * Copyright (C) 2000 Russell King |
| 6 | */ |
| 7 | |
| 8 | #include <linux/types.h> |
| 9 | |
| 10 | #ifndef __ASSEMBLY__ |
| 11 | #include <linux/reboot.h> |
| 12 | |
| 13 | struct tag; |
| 14 | struct pt_regs; |
| 15 | struct smp_operations; |
| 16 | #ifdef CONFIG_SMP |
| 17 | #define smp_ops(ops) (&(ops)) |
| 18 | #define smp_init_ops(ops) (&(ops)) |
| 19 | #else |
| 20 | #define smp_ops(ops) (struct smp_operations *)NULL |
| 21 | #define smp_init_ops(ops) (bool (*)(void))NULL |
| 22 | #endif |
| 23 | |
| 24 | struct machine_desc { |
| 25 | unsigned int nr; /* architecture number */ |
| 26 | const char *name; /* architecture name */ |
| 27 | unsigned long atag_offset; /* tagged list (relative) */ |
| 28 | const char *const *dt_compat; /* array of device tree |
| 29 | * 'compatible' strings */ |
| 30 | |
| 31 | unsigned int nr_irqs; /* number of IRQs */ |
| 32 | |
| 33 | #ifdef CONFIG_ZONE_DMA |
| 34 | phys_addr_t dma_zone_size; /* size of DMA-able area */ |
| 35 | #endif |
| 36 | |
| 37 | unsigned int video_start; /* start of video RAM */ |
| 38 | unsigned int video_end; /* end of video RAM */ |
| 39 | |
| 40 | unsigned char reserve_lp0 :1; /* never has lp0 */ |
| 41 | unsigned char reserve_lp1 :1; /* never has lp1 */ |
| 42 | unsigned char reserve_lp2 :1; /* never has lp2 */ |
| 43 | enum reboot_mode reboot_mode; /* default restart mode */ |
| 44 | unsigned l2c_aux_val; /* L2 cache aux value */ |
| 45 | unsigned l2c_aux_mask; /* L2 cache aux mask */ |
| 46 | void (*l2c_write_sec)(unsigned long, unsigned); |
| 47 | const struct smp_operations *smp; /* SMP operations */ |
| 48 | bool (*smp_init)(void); |
| 49 | void (*fixup)(struct tag *, char **); |
| 50 | void (*dt_fixup)(void); |
| 51 | long long (*pv_fixup)(void); |
| 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 | void (*restart)(enum reboot_mode, const char *); |
| 60 | }; |
| 61 | |
| 62 | /* |
| 63 | * Current machine - only accessible during boot. |
| 64 | */ |
| 65 | extern const struct machine_desc *machine_desc; |
| 66 | |
| 67 | /* |
| 68 | * Machine type table - also only accessible during boot |
| 69 | */ |
| 70 | extern const struct machine_desc __arch_info_begin[], __arch_info_end[]; |
| 71 | #define for_each_machine_desc(p) \ |
| 72 | for (p = __arch_info_begin; p < __arch_info_end; p++) |
| 73 | |
| 74 | /* |
| 75 | * Set of macros to define architecture features. This is built into |
| 76 | * a table by the linker. |
| 77 | */ |
| 78 | #define MACHINE_START(_type,_name) \ |
| 79 | static const struct machine_desc __mach_desc_##_type \ |
| 80 | __used \ |
| 81 | __section(".arch.info.init") = { \ |
| 82 | .nr = MACH_TYPE_##_type, \ |
| 83 | .name = _name, |
| 84 | |
| 85 | #define MACHINE_END \ |
| 86 | }; |
| 87 | |
| 88 | #define DT_MACHINE_START(_name, _namestr) \ |
| 89 | static const struct machine_desc __mach_desc_##_name \ |
| 90 | __used \ |
| 91 | __section(".arch.info.init") = { \ |
| 92 | .nr = ~0, \ |
| 93 | .name = _namestr, |
| 94 | |
| 95 | #endif |
| 96 |
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