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