diff options
author | Gabe Black <gabeblack@google.com> | 2014-04-10 02:36:49 -0700 |
---|---|---|
committer | Marc Jones <marc.jones@se-eng.com> | 2014-11-13 06:23:07 +0100 |
commit | d4d29a1a7eabf15d359b44a388ad3b5c5acedcc1 (patch) | |
tree | 214a4083bc5398c82ad19937b027d6cc85e996d3 /payloads/libpayload/drivers/timer/tegra_1us.c | |
parent | ab41b9daf82d65752caffc6ac8daf38d1bb4479b (diff) | |
download | coreboot-d4d29a1a7eabf15d359b44a388ad3b5c5acedcc1.tar.xz |
libpayload: timer: Move the timer drivers from depthcharge to libpayload.
These drivers are needed right away and never really fit into depthcharge's
driver model anyway.
CQ-DEPEND=CL:194064
BUG=None
TEST=Built and booted nyan, link, and peach_pit and verified that timer values
in cbmem were reasonable. Built for nyan_big, nyan_blaze and daisy.
BRANCH=None
Original-Change-Id: Ia7953cfece57524262a6c7d6537082af7a00f4d6
Original-Signed-off-by: Gabe Black <gabeblack@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/194058
Original-Reviewed-by: Gabe Black <gabeblack@chromium.org>
Original-Commit-Queue: Gabe Black <gabeblack@chromium.org>
Original-Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit f30a410f0a248c93bc34f5868af1596bf8ce3cdd)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I782d20f3cd63210a87c712643c7a53753f5ef301
Reviewed-on: http://review.coreboot.org/7225
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'payloads/libpayload/drivers/timer/tegra_1us.c')
-rw-r--r-- | payloads/libpayload/drivers/timer/tegra_1us.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/timer/tegra_1us.c b/payloads/libpayload/drivers/timer/tegra_1us.c new file mode 100644 index 0000000000..f227ad0fdf --- /dev/null +++ b/payloads/libpayload/drivers/timer/tegra_1us.c @@ -0,0 +1,41 @@ +/* + * Copyright 2013 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> + +static uint32_t * const tegra_tmrus = (void *)CONFIG_LP_TIMER_TEGRA_1US_ADDRESS; + +uint64_t timer_hz(void) +{ + return 1000 * 1000; +} + +uint64_t timer_raw_value(void) +{ + return readl(tegra_tmrus); +} |