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ipq8064: Add rudimentary timer driver to libpayload

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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.

Change-Id: Iae206749000d45040090df48199c8d86d76bbae5
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/198021
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
This commit is contained in:
Vadim Bendebury 2014-05-21 16:28:57 -07:00 • committed by chrome-internal-fetch
commit 8f49f752ab
4 changed files with 65 additions and 2 deletions
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18
payloads/libpayload/Config.in
View file

@ -353,6 +353,9 @@ config TIMER_MCT
config TIMER_TEGRA_1US
bool "Tegra 1us"
config TIMER_IPQ806X
bool "Timer for ipq806x platforms"
endchoice
config TIMER_MCT_HZ
@ -370,6 +373,21 @@ config TIMER_TEGRA_1US_ADDRESS
depends on TIMER_TEGRA_1US
default 0x60005010
config IPQ806X_TIMER_FREQ
int "Hardware timer frequency"
default 32000
depends on TIMER_IPQ806X
help
IPQ hardware presently provides a single timer running at 32KHz, a
finer granulariry timer is available but is not yet enabled.
config IPQ806X_TIMER_REG
hex "Timer register address"
default 0x0200A008
depends on TIMER_IPQ806X
help
Address of the register to read a free running timer value.
config USB
bool "USB Support"
default n

7
payloads/libpayload/configs/config.storm
View file

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# libpayload version: 0.2.0
# Wed May 21 16:16:26 2014
# Wed May 21 16:27:33 2014
#
#
@ -47,9 +47,12 @@ CONFIG_LP_8250_SERIAL_CONSOLE=y
#
# CONFIG_LP_RTC_PORT_EXTENDED_VIA is not set
# CONFIG_LP_STORAGE is not set
CONFIG_LP_TIMER_NONE=y
# CONFIG_LP_TIMER_NONE is not set
# CONFIG_LP_TIMER_MCT is not set
# CONFIG_LP_TIMER_TEGRA_1US is not set
CONFIG_LP_TIMER_IPQ806X=y
CONFIG_LP_IPQ806X_TIMER_FREQ=32000
CONFIG_LP_IPQ806X_TIMER_REG=0x0200A008
# CONFIG_LP_USB is not set
# CONFIG_LP_USB_GEN_HUB is not set
# CONFIG_LP_BIG_ENDIAN is not set

1
payloads/libpayload/drivers/Makefile.inc
View file

@ -48,6 +48,7 @@ libc-$(CONFIG_LP_NVRAM) += options.c
libc-$(CONFIG_LP_TIMER_MCT) += timer/mct.c
libc-$(CONFIG_LP_TIMER_RDTSC) += timer/rdtsc.c
libc-$(CONFIG_LP_TIMER_TEGRA_1US) += timer/tegra_1us.c
libc-$(CONFIG_LP_TIMER_IPQ806X) += timer/ipq806x.c
# Video console drivers
libc-$(CONFIG_LP_VIDEO_CONSOLE) += video/video.c

41
payloads/libpayload/drivers/timer/ipq806x.c Normal file
View file

@ -0,0 +1,41 @@
/*
* 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);
}