diff options
author | zbb <zbb@FreeBSD.org> | 2017-04-18 10:32:21 +0000 |
---|---|---|
committer | Luiz Souza <luiz@netgate.com> | 2017-09-06 11:25:47 -0500 |
commit | c15ed3dbf2a83d625d6361a584283ce46bb2cc5c (patch) | |
tree | 7b1c82fd35aaa7c90b68db80014eb1cd158f21d0 /sys | |
parent | 663c9c2ba4657053f639c54425ab6098d48bad37 (diff) | |
download | FreeBSD-src-c15ed3dbf2a83d625d6361a584283ce46bb2cc5c.zip FreeBSD-src-c15ed3dbf2a83d625d6361a584283ce46bb2cc5c.tar.gz |
Add PL310 platform initialization for Armada 38x
Introduce machine-dependent part of the arm/pl310 driver for
Armada 38x SoCs. Add prefetch and power savings configuration.
Submitted by: <arnaud.ysmal@stormshield.eu>
Obtained from: Stormshield
Sponsored by: Stormshield
Differential revision: https://reviews.freebsd.org/D10220
(cherry picked from commit a12ea9b1d6d0766e3eece3377ff411ad1dff7120)
Diffstat (limited to 'sys')
-rw-r--r-- | sys/arm/mv/armada38x/armada38x_pl310.c | 74 | ||||
-rw-r--r-- | sys/arm/mv/armada38x/files.armada38x | 1 |
2 files changed, 75 insertions, 0 deletions
diff --git a/sys/arm/mv/armada38x/armada38x_pl310.c b/sys/arm/mv/armada38x/armada38x_pl310.c new file mode 100644 index 0000000..892cde1 --- /dev/null +++ b/sys/arm/mv/armada38x/armada38x_pl310.c @@ -0,0 +1,74 @@ +/*- + * Copyright (c) 2017 Stormshield. + * All rights reserved. + * + * 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 ``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 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * The machine-dependent part of the arm/pl310 driver for Armada 38x SoCs. + */ + +#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 reg; + + /* + * Enable power saving modes: + * - Dynamic Gating stops the clock when the controller is idle. + */ + reg = pl310_read4(sc, PL310_POWER_CTRL); + reg |= POWER_CTRL_ENABLE_GATING; + pl310_write4(sc, PL310_POWER_CTRL, reg); + + pl310_write4(sc, PL310_PREFETCH_CTRL, PREFETCH_CTRL_DL | + PREFETCH_CTRL_DATA_PREFETCH | PREFETCH_CTRL_INCR_DL | + PREFETCH_CTRL_DL_ON_WRAP); +} + +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); +} diff --git a/sys/arm/mv/armada38x/files.armada38x b/sys/arm/mv/armada38x/files.armada38x index cc3e87b..8b105b5 100644 --- a/sys/arm/mv/armada38x/files.armada38x +++ b/sys/arm/mv/armada38x/files.armada38x @@ -7,3 +7,4 @@ arm/mv/armada38x/armada38x.c standard arm/mv/armada38x/armada38x_mp.c optional smp arm/mv/armada38x/pmsu.c standard arm/mv/armada38x/rtc.c standard +arm/mv/armada38x/armada38x_pl310.c optional pl310 |