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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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