| Message ID | 20170906014950.132960-4-sjg@chromium.org |
|---|---|
| State | Rejected |
| Delegated to: | Bin Meng |
| Headers | show |
| Series | x86: bootstage: Fix bootstage operation on link | expand |
On Wed, Sep 6, 2017 at 9:49 AM, Simon Glass <sjg@chromium.org> wrote: > Use the new separate init function so that we can make use of the timer > before driver model is started up. > > At some point we should consider adding the microsecond timer to the timer > uclass interface since it would reduce the amount of plumbing here > slightly. > > Signed-off-by: Simon Glass <sjg@chromium.org> > --- > > Changes in v3: None > Changes in v2: > - Rebase on top of early timer code and simplify slightly > > drivers/timer/tsc_timer.c | 19 ++++++++++++++----- > 1 file changed, 14 insertions(+), 5 deletions(-) > Drop this patch as it is not needed. thanks! Regards, Bin
diff --git a/drivers/timer/tsc_timer.c b/drivers/timer/tsc_timer.c index 0012fecde0..db49de87a2 100644 --- a/drivers/timer/tsc_timer.c +++ b/drivers/timer/tsc_timer.c @@ -295,11 +295,6 @@ ulong notrace timer_get_us(void) return get_ticks() / get_tbclk_mhz(); } -ulong timer_get_boot_us(void) -{ - return timer_get_us(); -} - void __udelay(unsigned long usec) { u64 now = get_ticks(); @@ -374,6 +369,20 @@ u64 notrace timer_early_get_count(void) return rdtsc() - gd->arch.tsc_base; } +ulong timer_get_boot_us(void) +{ + if (!gd->timer) { + u64 now_tick; + + tsc_timer_ensure_setup(); + now_tick = rdtsc() - gd->arch.tsc_base; + + return now_tick / (gd->arch.clock_rate / 1000000); + } + + return timer_get_us(); +} + static const struct timer_ops tsc_timer_ops = { .get_count = tsc_timer_get_count, };
Use the new separate init function so that we can make use of the timer before driver model is started up. At some point we should consider adding the microsecond timer to the timer uclass interface since it would reduce the amount of plumbing here slightly. Signed-off-by: Simon Glass <sjg@chromium.org> --- Changes in v3: None Changes in v2: - Rebase on top of early timer code and simplify slightly drivers/timer/tsc_timer.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-)