Hi,
-----Original Message----- From: Leo Liang ycliang@andestech.com Sent: Monday, September 4, 2023 4:02 PM To: Chanho Park chanho61.park@samsung.com Cc: Rick Chen rick@andestech.com; Simon Glass sjg@chromium.org; u- boot@lists.denx.de Subject: Re: [PATCH v2 3/3] timer: riscv_aclint_timer: add timer_get_boot_us for BOOTSTAGE
Hi Chanho,
On Mon, Aug 28, 2023 at 06:49:38PM +0900, Chanho Park wrote:
timer_get_boot_us function is required to record the boot stages as us-based timestamp.
Signed-off-by: Chanho Park chanho61.park@samsung.com
drivers/timer/riscv_aclint_timer.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/drivers/timer/riscv_aclint_timer.c b/drivers/timer/riscv_aclint_timer.c index e29d527c8d77..8b67745bb4a2 100644 --- a/drivers/timer/riscv_aclint_timer.c +++ b/drivers/timer/riscv_aclint_timer.c @@ -6,6 +6,7 @@
#include <common.h> #include <clk.h> +#include <div64.h> #include <dm.h> #include <timer.h> #include <asm/io.h> @@ -44,6 +45,27 @@ u64 notrace timer_early_get_count(void) } #endif
+#if CONFIG_IS_ENABLED(RISCV_MMODE) && CONFIG_IS_ENABLED(BOOTSTAGE) +ulong timer_get_boot_us(void) {
- int ret;
- u64 ticks = 0;
- u32 rate;
- ret = dm_timer_init();
- if (!ret) {
rate = timer_get_rate(gd->timer);timer_get_count(gd->timer, &ticks);- } else {
rate = RISCV_MMODE_TIMER_FREQ;ticks = readq((void __iomem*)MTIME_REG(RISCV_MMODE_TIMERBASE,
RISCV_MMODE_TIMEROFF));
- }
- return lldiv(ticks * 1001, (rate / 1000));
Why is this dividend 1001 ?
It's a typo. I'll correct when I send v2.
Best Regards, Chanho Park