mirror of https://gitee.com/openkylin/linux.git
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
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*
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* based on METAG mach/arch.h (which in turn was based on ARM)
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*/
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#ifndef _ASM_ARC_MACH_DESC_H_
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#define _ASM_ARC_MACH_DESC_H_
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/**
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* struct machine_desc - Board specific callbacks, called from ARC common code
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* Provided by each ARC board using MACHINE_START()/MACHINE_END(), so
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* a multi-platform kernel builds with array of such descriptors.
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* We extend the early DT scan to also match the DT's "compatible" string
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* against the @dt_compat of all such descriptors, and one with highest
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* "DT score" is selected as global @machine_desc.
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*
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* @name: Board/SoC name
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* @dt_compat: Array of device tree 'compatible' strings
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* (XXX: although only 1st entry is looked at)
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* @init_early: Very early callback [called from setup_arch()]
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* @init_per_cpu: for each CPU as it is coming up (SMP as well as UP)
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* [(M):init_IRQ(), (o):start_kernel_secondary()]
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* @init_machine: arch initcall level callback (e.g. populate static
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* platform devices or parse Devicetree)
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* @init_late: Late initcall level callback
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*
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*/
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struct machine_desc {
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const char *name;
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const char **dt_compat;
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void (*init_early)(void);
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void (*init_per_cpu)(unsigned int);
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void (*init_machine)(void);
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void (*init_late)(void);
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};
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/*
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* Current machine - only accessible during boot.
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*/
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extern const struct machine_desc *machine_desc;
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/*
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* Machine type table - also only accessible during boot
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*/
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extern const struct machine_desc __arch_info_begin[], __arch_info_end[];
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/*
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* Set of macros to define architecture features.
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* This is built into a table by the linker.
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*/
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#define MACHINE_START(_type, _name) \
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static const struct machine_desc __mach_desc_##_type \
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__used __section(.arch.info.init) = { \
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.name = _name,
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#define MACHINE_END \
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};
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extern const struct machine_desc *setup_machine_fdt(void *dt);
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#endif
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