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hw/timer/cmsdk-apb-timer: Correctly identify and set one-shot mode

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The CMSDK APB timer is currently always configured as periodic timer.
This results in the following messages when trying to boot Linux.

Timer with delta zero, disabling

If the timer limit set with the RELOAD command is 0, the timer
needs to be enabled as one-shot timer.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Guenter Roeck 2018-07-09 14:51:34 +01:00 committed by Peter Maydell
parent 6583080ed8
commit 0e25683308
1 changed files with 1 additions and 1 deletions
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2
hw/timer/cmsdk-apb-timer.c
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@ -119,7 +119,7 @@ static void cmsdk_apb_timer_write(void *opaque, hwaddr offset, uint64_t value,
}
s->ctrl = value & 0xf;
if (s->ctrl & R_CTRL_EN_MASK) {
ptimer_run(s->timer, 0);
ptimer_run(s->timer, ptimer_get_limit(s->timer) == 0);
} else {
ptimer_stop(s->timer);
}