Marc Jones (marc.jones@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8002
-gerrit
commit 0d1767c75ba0b8d30742f0f95c93082eaffeae16 Author: Vadim Bendebury vbendeb@chromium.org Date: Wed May 21 16:28:57 2014 -0700
libpayload: ipq8064: Add rudimentary timer driver
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 --- payloads/libpayload/Config.in | 18 +++++++++++++ payloads/libpayload/drivers/Makefile.inc | 1 + payloads/libpayload/drivers/timer/ipq806x.c | 41 +++++++++++++++++++++++++++++ 3 files changed, 60 insertions(+)
diff --git a/payloads/libpayload/Config.in b/payloads/libpayload/Config.in index bef0e05..3c5c342 100644 --- a/payloads/libpayload/Config.in +++ b/payloads/libpayload/Config.in @@ -354,6 +354,9 @@ config TIMER_MCT config TIMER_TEGRA_1US bool "Tegra 1us"
+config TIMER_IPQ806X + bool "Timer for ipq806x platforms" + endchoice
config TIMER_MCT_HZ @@ -371,6 +374,21 @@ 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 diff --git a/payloads/libpayload/drivers/Makefile.inc b/payloads/libpayload/drivers/Makefile.inc index 7212389..d46bb11 100644 --- a/payloads/libpayload/drivers/Makefile.inc +++ b/payloads/libpayload/drivers/Makefile.inc @@ -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 diff --git a/payloads/libpayload/drivers/timer/ipq806x.c b/payloads/libpayload/drivers/timer/ipq806x.c new file mode 100644 index 0000000..4edbf8e --- /dev/null +++ b/payloads/libpayload/drivers/timer/ipq806x.c @@ -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); +} +