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Differential D2386 Diff 6064 sys/arm64/include/fdt.h

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sys/arm64/include/fdt.h

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/*-
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
andrewUnsubmitted
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The file we just can't kill, fdtbus_bs_tag should only be used in early devices, i.e. the uart, and only when you know you are booting with FDT enabled.

andrew: The file we just can't kill, `fdtbus_bs_tag` should only be used in early devices, i.e. the…
ianUnsubmitted
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I think part of the problem here is the name. This really has nothing to do with fdt in any way, it's just the arm global root tag that all other bus_space tags inherit from. We've always had one, but in the pre-fdt days each soc had its own and they had varying names. They were all identical except on a couple strange xscale variants that had different high/low addr constraints.

ian: I think part of the problem here is the name. This really has nothing to do with fdt in any…
brAuthorUnsubmitted
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so how to deal with it ? it is the last thing I have to fix

br: so how to deal with it ? it is the last thing I have to fix
* All rights reserved.
*
* This software was developed by the University of Cambridge Computer
* Laboratory as part of the CTSRD Project, with support from the UK Higher
* Education Innovation Fund (HEIF).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_FDT_H_
#define _MACHINE_FDT_H_
extern bus_space_tag_t fdtbus_bs_tag;
#endif /* _MACHINE_FDT_H_ */