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ipq8084: provide monotonic us timer

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This service is required by various coreboot code modules. It looks
like the 8064 SOC does not provide anything better than a 32 KHz free
running counter (it is used in u-boot for us timer as well). Let's use
this for now.

BUG=chrome-os-partner:27784
TEST=manual
   . with the rest of the patches applied AP148 boots all the way to
     trying to start the payload.

Change-Id: I98b91ce179f7388d59c769a59caf49ca7640e047
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/197896
This commit is contained in:
Vadim Bendebury 2014-05-01 15:24:32 -07:00 • committed by chrome-internal-fetch
commit d526830f9d
1 changed files with 5 additions and 0 deletions
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5
src/soc/qualcomm/ipq806x/timer.c
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@ -76,6 +76,11 @@ void udelay(unsigned usec)
} while (runcount < val);
}
void timer_monotonic_get(struct mono_time *mt)
{
mono_time_set_usecs(mt, (readl(GPT_COUNT_VAL) * 1000) / GPT_FREQ_KHZ);
}
#if 0
/*