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libpayload: ipq8064: Add rudimentary timer driver

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This is still using the 32kHz timer coreboot uses. A finer granularity
timer implementation for 806x is in the works.

BUG=chrome-os-partner:27784,chrome-os-partner:28880
TEST=none yet.

Original-Change-Id: Iae206749000d45040090df48199c8d86d76bbae5
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/198021
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
(cherry picked from commit 8f49f752ab8f84b7c5dc189238732360e8d2aae2)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ia150c974e5b66939de0b007cf7c1308c187f3289
Reviewed-on: http://review.coreboot.org/8002
Tested-by: build bot (Jenkins)
Reviewed-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Vadim Bendebury
2014-05-21 16:28:57 -07:00
committed by Marc Jones
parent 5106b9dbb7
commit 8ec74a39fa
4 changed files with 62 additions and 1 deletions
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41
payloads/libpayload/drivers/timer/ipq806x.c Normal file
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/*
* This file is part of the depthcharge project.
*
* Copyright (C) 2014 The Linux Foundation. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
#include <libpayload.h>
uint64_t timer_hz(void)
{
return CONFIG_LP_IPQ806X_TIMER_FREQ;
}
uint64_t timer_raw_value(void)
{
return readl((void *)CONFIG_LP_IPQ806X_TIMER_REG);
}