cregit-Linux how code gets into the kernel

Release 4.14 arch/arc/include/asm/mach_desc.h

/*
 * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
 *
 * based on METAG mach/arch.h (which in turn was based on ARM)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef _ASM_ARC_MACH_DESC_H_

#define _ASM_ARC_MACH_DESC_H_

/**
 * struct machine_desc - Board specific callbacks, called from ARC common code
 *      Provided by each ARC board using MACHINE_START()/MACHINE_END(), so
 *      a multi-platform kernel builds with array of such descriptors.
 *      We extend the early DT scan to also match the DT's "compatible" string
 *      against the @dt_compat of all such descriptors, and one with highest
 *      "DT score" is selected as global @machine_desc.
 *
 * @name:               Board/SoC name
 * @dt_compat:          Array of device tree 'compatible' strings
 *                      (XXX: although only 1st entry is looked at)
 * @init_early:         Very early callback [called from setup_arch()]
 * @init_per_cpu:       for each CPU as it is coming up (SMP as well as UP)
 *                      [(M):init_IRQ(), (o):start_kernel_secondary()]
 * @init_machine:       arch initcall level callback (e.g. populate static
 *                      platform devices or parse Devicetree)
 * @init_late:          Late initcall level callback
 *
 */

struct machine_desc {
	
const char		*name;
	
const char		**dt_compat;
	
void			(*init_early)(void);
#ifdef CONFIG_SMP
	
void			(*init_per_cpu)(unsigned int);
#endif
	
void			(*init_machine)(void);
	
void			(*init_late)(void);

};

/*
 * Current machine - only accessible during boot.
 */
extern const struct machine_desc *machine_desc;

/*
 * Machine type table - also only accessible during boot
 */
extern const struct machine_desc __arch_info_begin[], __arch_info_end[];

/*
 * Set of macros to define architecture features.
 * This is built into a table by the linker.
 */

#define MACHINE_START(_type, _name)			\
static const struct machine_desc __mach_desc_##_type    \
__used                                                  \
__attribute__((__section__(".arch.info.init"))) = {     \
        .name           = _name,


#define MACHINE_END				\
};

extern const struct machine_desc *setup_machine_fdt(void *dt);

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Vineet Gupta11297.39%266.67%
Rob Herring32.61%133.33%
Total115100.00%3100.00%
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