617994efc7
drivers, one for fdt, one for acpi. It then uses this to decide if it will use fdt or acpi. The GICv2 (interrupt controller) and Generic Timer drivers have been updated to handle both cases. As this is early code we still need FDT to find the kernel console, and some parts are still missing, including PCI support. Differential Revision: https://reviews.freebsd.org/D2463 Reviewed by: jhb, jkim, emaste Obtained from: ABT Systems Ltd Relnotes: Yes Sponsored by: The FreeBSD Foundation
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*-
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Andrew Turner under
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* sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_IODEV_H_
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#define _MACHINE_IODEV_H_
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#define iodev_read_1(a) \
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({ \
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uint8_t val; \
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__asm __volatile("ldrb %w0, [%1]" : "=&r" (val) : "r"(a)); \
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val; \
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})
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#define iodev_read_2(a) \
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({ \
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uint16_t val; \
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__asm __volatile("ldrh %w0, [%1]" : "=&r" (val) : "r"(a)); \
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val; \
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})
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#define iodev_read_4(a) \
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({ \
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uint32_t val; \
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__asm __volatile("ldr %w0, [%1]" : "=&r" (val) : "r"(a)); \
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val; \
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})
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#define iodev_write_1(a, v) \
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__asm __volatile("strb %w0, [%1]" :: "r" (v), "r"(a))
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#define iodev_write_2(a, v) \
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__asm __volatile("strh %w0, [%1]" :: "r" (v), "r"(a))
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#define iodev_write_4(a, v) \
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__asm __volatile("str %w0, [%1]" :: "r" (v), "r"(a))
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#endif /* _MACHINE_IODEV_H_ */
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