93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/*-
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* Copyright 2013-2015 John Wehle <john@feith.com>
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* All rights reserved.
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*
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* Based on omap4_l2cache.c by Olivier Houchard
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <machine/bus.h>
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#include <machine/pl310.h>
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void
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platform_pl310_init(struct pl310_softc *sc)
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{
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uint32_t aux;
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aux = pl310_read4(sc, PL310_AUX_CTRL);
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/*
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* The Amlogic Linux platform code enables via AUX:
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*
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* Early BRESP
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* Full Line of Zero (which must match processor setting)
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* Data Prefetch
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*
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* and additionally on the m6 enables:
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*
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* Instruction Prefetch
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*
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* For the moment we only enable Data Prefetch ...
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* further refinements can happen as things mature.
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*/
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/*
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* Disable instruction prefetch.
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*/
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aux &= ~AUX_CTRL_INSTR_PREFETCH;
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/*
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* Enable data prefetch.
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*/
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aux |= AUX_CTRL_DATA_PREFETCH;
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pl310_write4(sc, PL310_AUX_CTRL, aux);
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}
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void
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platform_pl310_write_ctrl(struct pl310_softc *sc, uint32_t val)
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{
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pl310_write4(sc, PL310_CTRL, val);
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}
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void
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platform_pl310_write_debug(struct pl310_softc *sc, uint32_t val)
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{
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pl310_write4(sc, PL310_DEBUG_CTRL, val);
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}
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