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64 lines
1.9 KiB
64 lines
1.9 KiB
/* 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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