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/*
* Copyright (C) 2016 Imagination Technologies
* Author: Paul Burton <paul.burton@imgtec.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __MIPS_ASM_MACHINE_H__
#define __MIPS_ASM_MACHINE_H__
#include <linux/libfdt.h>
#include <linux/of.h>
struct mips_machine {
const struct of_device_id *matches;
const void *fdt;
bool (*detect)(void);
const void *(*fixup_fdt)(const void *fdt, const void *match_data);
unsigned int (*measure_hpt_freq)(void);
};
extern long __mips_machines_start;
extern long __mips_machines_end;
#define MIPS_MACHINE(name) \
static const struct mips_machine __mips_mach_##name \
__used __section(.mips.machines.init)
#define for_each_mips_machine(mach) \
for ((mach) = (struct mips_machine *)&__mips_machines_start; \
(mach) < (struct mips_machine *)&__mips_machines_end; \
(mach)++)
/**
* mips_machine_is_compatible() - check if a machine is compatible with an FDT
* @mach: the machine struct to check
* @fdt: the FDT to check for compatibility with
*
* Check whether the given machine @mach is compatible with the given flattened
* device tree @fdt, based upon the compatibility property of the root node.
*
* Return: the device id matched if any, else NULL
*/
static inline const struct of_device_id *
mips_machine_is_compatible(const struct mips_machine *mach, const void *fdt)
{
const struct of_device_id *match;
if (!mach->matches)
return NULL;
for (match = mach->matches; match->compatible; match++) {
if (fdt_node_check_compatible(fdt, 0, match->compatible) == 0)
return match;
}
return NULL;
}
#endif /* __MIPS_ASM_MACHINE_H__ */
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