diff options
Diffstat (limited to 'drivers/timer')
-rw-r--r-- | drivers/timer/Makefile | 2 | ||||
-rw-r--r-- | drivers/timer/riscv_aclint_timer.c | 74 | ||||
-rw-r--r-- | drivers/timer/sifive_clint_timer.c | 68 |
3 files changed, 75 insertions, 69 deletions
diff --git a/drivers/timer/Makefile b/drivers/timer/Makefile index cdc20f5e94..1ca74805fd 100644 --- a/drivers/timer/Makefile +++ b/drivers/timer/Makefile @@ -25,7 +25,7 @@ obj-$(CONFIG_RISCV_TIMER) += riscv_timer.o obj-$(CONFIG_ROCKCHIP_TIMER) += rockchip_timer.o obj-$(CONFIG_SANDBOX_TIMER) += sandbox_timer.o obj-$(CONFIG_SP804_TIMER) += sp804_timer.o -obj-$(CONFIG_$(SPL_)SIFIVE_CLINT) += sifive_clint_timer.o +obj-$(CONFIG_$(SPL_)RISCV_ACLINT) += riscv_aclint_timer.o obj-$(CONFIG_ARM_GLOBAL_TIMER) += arm_global_timer.o obj-$(CONFIG_STM32_TIMER) += stm32_timer.o obj-$(CONFIG_TEGRA_TIMER) += tegra-timer.o diff --git a/drivers/timer/riscv_aclint_timer.c b/drivers/timer/riscv_aclint_timer.c new file mode 100644 index 0000000000..e29d527c8d --- /dev/null +++ b/drivers/timer/riscv_aclint_timer.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020, Sean Anderson <seanga2@gmail.com> + * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com> + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <timer.h> +#include <asm/io.h> +#include <dm/device-internal.h> +#include <linux/err.h> + +#define CLINT_MTIME_OFFSET 0xbff8 +#define ACLINT_MTIME_OFFSET 0 + +/* mtime register */ +#define MTIME_REG(base, offset) ((ulong)(base) + (offset)) + +static u64 notrace riscv_aclint_timer_get_count(struct udevice *dev) +{ + return readq((void __iomem *)MTIME_REG(dev_get_priv(dev), + dev_get_driver_data(dev))); +} + +#if CONFIG_IS_ENABLED(RISCV_MMODE) && IS_ENABLED(CONFIG_TIMER_EARLY) +/** + * timer_early_get_rate() - Get the timer rate before driver model + */ +unsigned long notrace timer_early_get_rate(void) +{ + return RISCV_MMODE_TIMER_FREQ; +} + +/** + * timer_early_get_count() - Get the timer count before driver model + * + */ +u64 notrace timer_early_get_count(void) +{ + return readq((void __iomem *)MTIME_REG(RISCV_MMODE_TIMERBASE, + RISCV_MMODE_TIMEROFF)); +} +#endif + +static const struct timer_ops riscv_aclint_timer_ops = { + .get_count = riscv_aclint_timer_get_count, +}; + +static int riscv_aclint_timer_probe(struct udevice *dev) +{ + dev_set_priv(dev, dev_read_addr_ptr(dev)); + if (!dev_get_priv(dev)) + return -EINVAL; + + return timer_timebase_fallback(dev); +} + +static const struct udevice_id riscv_aclint_timer_ids[] = { + { .compatible = "riscv,clint0", .data = CLINT_MTIME_OFFSET }, + { .compatible = "sifive,clint0", .data = CLINT_MTIME_OFFSET }, + { .compatible = "riscv,aclint-mtimer", .data = ACLINT_MTIME_OFFSET }, + { } +}; + +U_BOOT_DRIVER(riscv_aclint_timer) = { + .name = "riscv_aclint_timer", + .id = UCLASS_TIMER, + .of_match = riscv_aclint_timer_ids, + .probe = riscv_aclint_timer_probe, + .ops = &riscv_aclint_timer_ops, + .flags = DM_FLAG_PRE_RELOC, +}; diff --git a/drivers/timer/sifive_clint_timer.c b/drivers/timer/sifive_clint_timer.c deleted file mode 100644 index 939b99d937..0000000000 --- a/drivers/timer/sifive_clint_timer.c +++ /dev/null @@ -1,68 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2020, Sean Anderson <seanga2@gmail.com> - * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com> - */ - -#include <common.h> -#include <clk.h> -#include <dm.h> -#include <timer.h> -#include <asm/io.h> -#include <dm/device-internal.h> -#include <linux/err.h> - -/* mtime register */ -#define MTIME_REG(base) ((ulong)(base) + 0xbff8) - -static u64 notrace sifive_clint_get_count(struct udevice *dev) -{ - return readq((void __iomem *)MTIME_REG(dev_get_priv(dev))); -} - -#if CONFIG_IS_ENABLED(RISCV_MMODE) && IS_ENABLED(CONFIG_TIMER_EARLY) -/** - * timer_early_get_rate() - Get the timer rate before driver model - */ -unsigned long notrace timer_early_get_rate(void) -{ - return RISCV_MMODE_TIMER_FREQ; -} - -/** - * timer_early_get_count() - Get the timer count before driver model - * - */ -u64 notrace timer_early_get_count(void) -{ - return readq((void __iomem *)MTIME_REG(RISCV_MMODE_TIMERBASE)); -} -#endif - -static const struct timer_ops sifive_clint_ops = { - .get_count = sifive_clint_get_count, -}; - -static int sifive_clint_probe(struct udevice *dev) -{ - dev_set_priv(dev, dev_read_addr_ptr(dev)); - if (!dev_get_priv(dev)) - return -EINVAL; - - return timer_timebase_fallback(dev); -} - -static const struct udevice_id sifive_clint_ids[] = { - { .compatible = "riscv,clint0" }, - { .compatible = "sifive,clint0" }, - { } -}; - -U_BOOT_DRIVER(sifive_clint) = { - .name = "sifive_clint", - .id = UCLASS_TIMER, - .of_match = sifive_clint_ids, - .probe = sifive_clint_probe, - .ops = &sifive_clint_ops, - .flags = DM_FLAG_PRE_RELOC, -}; |