libpayload: Add timer driver for armada38x
Add timer driver for armada38x
BUG=chrome-os-partner:47462
TEST=emerge-cyclone libpayload
BRANCH=tot
Change-Id: Iefb6d1fcb907edb54d55ba8addfb66329af6c3c7
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: cd467160ecab050a541a445c2afab9e6bc625635
Original-Change-Id: Id42bafdbc34295b6f8afe5610fb3bab0e0e1b6e8
Original-Signed-off-by: Ruilin Hao <rlhao@marvell.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/313343
Original-Commit-Ready: Kan Yan <kyan@google.com>
Original-Tested-by: Kan Yan <kyan@google.com>
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Yuji Sasaki <sasakiy@chromium.org>
Reviewed-on: https://review.coreboot.org/13114
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/payloads/libpayload/Kconfig b/payloads/libpayload/Kconfig
index 5e02624..95bd045 100644
--- a/payloads/libpayload/Kconfig
+++ b/payloads/libpayload/Kconfig
@@ -398,6 +398,12 @@
config TIMER_IPQ806X
bool "Timer for ipq806x platforms"
+config TIMER_ARMADA38X
+ bool "Timer for armada38x platforms"
+ help
+ This is the timer driver for marvell armada38x
+ platforms.
+
config TIMER_RK
bool "Timer for Rockchip"
@@ -450,6 +456,16 @@
help
Address of the register to read a free running timer value.
+config ARMADA38X_TIMER_FREQ
+ int "Hardware timer frequency"
+ depends on TIMER_ARMADA38X
+ default 25000000
+
+config ARMADA38X_TIMER_REG
+ hex "Timer register address"
+ default 0xF1020314
+ depends on TIMER_ARMADA38X
+
config IPROC_PERIPH_GLB_TIM_REG_BASE
hex "Cygnus timer base address"
depends on TIMER_CYGNUS
diff --git a/payloads/libpayload/drivers/Makefile.inc b/payloads/libpayload/drivers/Makefile.inc
index be43b35..31eb43c 100644
--- a/payloads/libpayload/drivers/Makefile.inc
+++ b/payloads/libpayload/drivers/Makefile.inc
@@ -54,6 +54,7 @@
libc-$(CONFIG_LP_TIMER_BG4CD) += timer/bg4cd.c
libc-$(CONFIG_LP_TIMER_IMG_PISTACHIO) += timer/img_pistachio.c
libc-$(CONFIG_LP_TIMER_CYGNUS) += timer/cygnus.c
+libc-$(CONFIG_LP_TIMER_ARMADA38X) += timer/armada38x.c
# Video console drivers
libc-$(CONFIG_LP_VIDEO_CONSOLE) += video/video.c
diff --git a/payloads/libpayload/drivers/timer/armada38x.c b/payloads/libpayload/drivers/timer/armada38x.c
new file mode 100644
index 0000000..2a060bb
--- /dev/null
+++ b/payloads/libpayload/drivers/timer/armada38x.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * 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>
+#include <libpayload-config.h>
+
+uint64_t timer_hz(void)
+{
+ return CONFIG_LP_ARMADA38X_TIMER_FREQ;
+}
+
+uint64_t timer_raw_value(void)
+{
+ static uint64_t total_ticks = 0;
+ uint64_t overflow = 0;
+ uint32_t current_ticks =
+ 0xffffffff - readl((void *)CONFIG_LP_ARMADA38X_TIMER_REG);
+
+ /* It assumes only one overflow happened since the last call */
+ if (current_ticks <= (uint32_t)total_ticks)
+ overflow = 1ULL << 32;
+ /* The least significant part(32 bits) of total_ticks will always
+ * become equal to current ticks */
+ total_ticks = (((total_ticks + overflow) >> 32) << 32) + current_ticks;
+ return total_ticks;
+}