87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/*
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* arch/metag/include/asm/mach/arch.h
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*
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* Copyright (C) 2012 Imagination Technologies Ltd.
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*
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* based on the ARM version:
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* Copyright (C) 2000 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _METAG_MACH_ARCH_H_
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#define _METAG_MACH_ARCH_H_
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#include <linux/stddef.h>
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#include <asm/clock.h>
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/**
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* struct machine_desc - Describes a board controlled by a Meta.
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* @name: Board/SoC name.
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* @dt_compat: Array of device tree 'compatible' strings.
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* @clocks: Clock callbacks.
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*
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* @nr_irqs: Maximum number of IRQs.
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* If 0, defaults to NR_IRQS in asm-generic/irq.h.
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*
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* @init_early: Early init callback.
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* @init_irq: IRQ init callback for setting up IRQ controllers.
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* @init_machine: Arch init callback for setting up devices.
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* @init_late: Late init callback.
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*
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* This structure is provided by each board which can be controlled by a Meta.
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* It is chosen by matching the compatible strings in the device tree provided
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* by the bootloader with the strings in @dt_compat, and sets up any aspects of
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* the machine that aren't configured with device tree (yet).
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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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struct meta_clock_desc *clocks;
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unsigned int nr_irqs;
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void (*init_early)(void);
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void (*init_irq)(void);
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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 struct machine_desc __arch_info_begin[], __arch_info_end[];
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#define for_each_machine_desc(p) \
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for (p = __arch_info_begin; p < __arch_info_end; p++)
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static inline struct machine_desc *default_machine_desc(void)
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{
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/* the default machine is the last one linked in */
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if (__arch_info_end - 1 < __arch_info_begin)
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return NULL;
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return __arch_info_end - 1;
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}
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/*
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* Set of macros to define architecture features. This is built into
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* 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 \
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__attribute__((__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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#endif /* _METAG_MACH_ARCH_H_ */
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