69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
|
/*
|
||
|
|
* 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);
|
||
|
|
void (*init_per_cpu)(unsigned int);
|
||
|
|
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
|