diff options
| -rw-r--r-- | payloads/libpayload/Config.in | 17 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/Makefile.inc | 1 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/timer/mtk_timer.c | 34 |
3 files changed, 52 insertions, 0 deletions
diff --git a/payloads/libpayload/Config.in b/payloads/libpayload/Config.in index 40c57dcb06..4d4876182e 100644 --- a/payloads/libpayload/Config.in +++ b/payloads/libpayload/Config.in @@ -405,6 +405,9 @@ config TIMER_CYGNUS config TIMER_IMG_PISTACHIO bool "Timer for IMG Pistachio" +config TIMER_MTK + bool "Timer for MediaTek MT8173" + endchoice config TIMER_MCT_HZ @@ -447,6 +450,20 @@ config IPROC_PERIPH_GLB_TIM_REG_BASE depends on TIMER_CYGNUS default 0x19020200 +config TIMER_MTK_HZ + int "MediaTek GPT frequency" + depends on TIMER_MTK + default 13000000 + help + Clock frequency of MediaTek General Purpose Timer. + +config TIMER_MTK_ADDRESS + hex "MTK GPT register address" + depends on TIMER_MTK + default 0x10008048 + help + Address of GPT4's counter register to read the FREERUN-mode timer value. + config USB bool "USB Support" default n diff --git a/payloads/libpayload/drivers/Makefile.inc b/payloads/libpayload/drivers/Makefile.inc index 61b0034a28..57a82ac0a9 100644 --- a/payloads/libpayload/drivers/Makefile.inc +++ b/payloads/libpayload/drivers/Makefile.inc @@ -46,6 +46,7 @@ libc-$(CONFIG_LP_NVRAM) += nvram.c libc-$(CONFIG_LP_NVRAM) += options.c # Timer drivers +libc-$(CONFIG_LP_TIMER_MTK) += timer/mtk_timer.c libc-$(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 diff --git a/payloads/libpayload/drivers/timer/mtk_timer.c b/payloads/libpayload/drivers/timer/mtk_timer.c new file mode 100644 index 0000000000..92b28bd008 --- /dev/null +++ b/payloads/libpayload/drivers/timer/mtk_timer.c @@ -0,0 +1,34 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 MediaTek Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <arch/io.h> +#include <libpayload.h> +#include <libpayload-config.h> +#include <stdint.h> + +static uint32_t *const mtk_tmrus = (void*)CONFIG_LP_TIMER_MTK_ADDRESS; + +uint64_t timer_hz(void) +{ + return CONFIG_LP_TIMER_MTK_HZ; +} + +uint64_t timer_raw_value(void) +{ + return (uint64_t)readl(mtk_tmrus); +} |