1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
 4 *
 5 * based on METAG mach/arch.h (which in turn was based on ARM)
 
 
 
 
 6 */
 7
 8#ifndef _ASM_ARC_MACH_DESC_H_
 9#define _ASM_ARC_MACH_DESC_H_
10
11/**
12 * struct machine_desc - Board specific callbacks, called from ARC common code
13 *	Provided by each ARC board using MACHINE_START()/MACHINE_END(), so
14 *	a multi-platform kernel builds with array of such descriptors.
15 *	We extend the early DT scan to also match the DT's "compatible" string
16 *	against the @dt_compat of all such descriptors, and one with highest
17 *	"DT score" is selected as global @machine_desc.
18 *
19 * @name:		Board/SoC name
20 * @dt_compat:		Array of device tree 'compatible' strings
21 * 			(XXX: although only 1st entry is looked at)
22 * @init_early:		Very early callback [called from setup_arch()]
23 * @init_per_cpu:	for each CPU as it is coming up (SMP as well as UP)
24 * 			[(M):init_IRQ(), (o):start_kernel_secondary()]
25 * @init_machine:	arch initcall level callback (e.g. populate static
26 * 			platform devices or parse Devicetree)
27 * @init_late:		Late initcall level callback
28 *
29 */
30struct machine_desc {
31	const char		*name;
32	const char		**dt_compat;
33	void			(*init_early)(void);
 
34	void			(*init_per_cpu)(unsigned int);
 
35	void			(*init_machine)(void);
36	void			(*init_late)(void);
37
38};
39
40/*
41 * Current machine - only accessible during boot.
42 */
43extern const struct machine_desc *machine_desc;
44
45/*
46 * Machine type table - also only accessible during boot
47 */
48extern const struct machine_desc __arch_info_begin[], __arch_info_end[];
49
50/*
51 * Set of macros to define architecture features.
52 * This is built into a table by the linker.
53 */
54#define MACHINE_START(_type, _name)			\
55static const struct machine_desc __mach_desc_##_type	\
56__used __section(".arch.info.init") = {			\
 
57	.name		= _name,
58
59#define MACHINE_END				\
60};
61
62extern const struct machine_desc *setup_machine_fdt(void *dt);
63
64#endif

 
 1/*
 2 * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
 3 *
 4 * based on METAG mach/arch.h (which in turn was based on ARM)
 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 _ASM_ARC_MACH_DESC_H_
12#define _ASM_ARC_MACH_DESC_H_
13
14/**
15 * struct machine_desc - Board specific callbacks, called from ARC common code
16 *	Provided by each ARC board using MACHINE_START()/MACHINE_END(), so
17 *	a multi-platform kernel builds with array of such descriptors.
18 *	We extend the early DT scan to also match the DT's "compatible" string
19 *	against the @dt_compat of all such descriptors, and one with highest
20 *	"DT score" is selected as global @machine_desc.
21 *
22 * @name:		Board/SoC name
23 * @dt_compat:		Array of device tree 'compatible' strings
24 * 			(XXX: although only 1st entry is looked at)
25 * @init_early:		Very early callback [called from setup_arch()]
26 * @init_per_cpu:	for each CPU as it is coming up (SMP as well as UP)
27 * 			[(M):init_IRQ(), (o):start_kernel_secondary()]
28 * @init_machine:	arch initcall level callback (e.g. populate static
29 * 			platform devices or parse Devicetree)
30 * @init_late:		Late initcall level callback
31 *
32 */
33struct machine_desc {
34	const char		*name;
35	const char		**dt_compat;
36	void			(*init_early)(void);
37#ifdef CONFIG_SMP
38	void			(*init_per_cpu)(unsigned int);
39#endif
40	void			(*init_machine)(void);
41	void			(*init_late)(void);
42
43};
44
45/*
46 * Current machine - only accessible during boot.
47 */
48extern const struct machine_desc *machine_desc;
49
50/*
51 * Machine type table - also only accessible during boot
52 */
53extern const struct machine_desc __arch_info_begin[], __arch_info_end[];
54
55/*
56 * Set of macros to define architecture features.
57 * This is built into a table by the linker.
58 */
59#define MACHINE_START(_type, _name)			\
60static const struct machine_desc __mach_desc_##_type	\
61__used							\
62__attribute__((__section__(".arch.info.init"))) = {	\
63	.name		= _name,
64
65#define MACHINE_END				\
66};
67
68extern const struct machine_desc *setup_machine_fdt(void *dt);
69
70#endif