diff options
Diffstat (limited to 'payloads/libpayload/drivers/timer')
| -rw-r--r-- | payloads/libpayload/drivers/timer/Kconfig | 5 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/timer/arm64_arch_timer.c | 44 |
2 files changed, 49 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/timer/Kconfig b/payloads/libpayload/drivers/timer/Kconfig index 9e274ee00e..54cbe4a663 100644 --- a/payloads/libpayload/drivers/timer/Kconfig +++ b/payloads/libpayload/drivers/timer/Kconfig @@ -45,6 +45,11 @@ config TIMER_IPQ40XX This is the timer driver for QCA IPQ40xx based platforms. +config TIMER_ARM64_ARCH + bool "Architecture Timer for ARM64 platforms" + help + The cntfrq register needs to have been pre-initialized. + config TIMER_RK3288 bool "Timer for Rockchip RK3288" diff --git a/payloads/libpayload/drivers/timer/arm64_arch_timer.c b/payloads/libpayload/drivers/timer/arm64_arch_timer.c new file mode 100644 index 0000000000..08688475ba --- /dev/null +++ b/payloads/libpayload/drivers/timer/arm64_arch_timer.c @@ -0,0 +1,44 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (c) 2018, 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: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 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 <arch/lib_helpers.h> +#include <libpayload.h> + +uint64_t timer_hz(void) +{ + return raw_read_cntfrq_el0(); +} + +uint64_t timer_raw_value(void) +{ + return raw_read_cntpct_el0(); +} |