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imx: syscounter: support timer_get_boot_us

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With supporting timer_get_boot_us, we can profile boot up time with below
configs and function bootstage_mark_name().

CONFIG_BOOTSTAGE=y
CONFIG_BOOTSTAGE_REPORT=y
CONFIG_CMD_BOOTSTAGE=y

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <festevam@denx.de>
This commit is contained in:
Jun Nie 2022-07-21 18:30:05 +08:00 committed by Stefano Babic
parent 085d041b57
commit 651478777b
1 changed files with 9 additions and 0 deletions
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9
arch/arm/mach-imx/syscounter.c
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@ -79,6 +79,7 @@ int timer_init(void)
gd->arch.tbl = 0;
gd->arch.tbu = 0;
gd->arch.timer_rate_hz = freq;
return 0;
}
#endif
@ -100,6 +101,14 @@ ulong get_timer(ulong base)
return tick_to_time(get_ticks()) - base;
}
ulong timer_get_boot_us(void)
{
if (!gd->arch.timer_rate_hz)
timer_init();
return tick_to_time(get_ticks());
}
void __udelay(unsigned long usec)
{
unsigned long long tmp;