From: Lucjan Bryndza <lbryndza.oss@icloud.com>

The current implementation of timers does not work properly
even in basic functionality. A counter configured to report
an interrupt every 10ms reports the first interrupts after a
few seconds.  There are also no properly implemented count up an
count down modes. This commit fixes bugs with interrupt
reporting and implements the basic modes of the counter's
time-base block.

Update timer realize

Signed-off-by: Lucjan Bryndza <lbryndza.oss@icloud.com>
---
 hw/timer/stm32f2xx_timer.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/hw/timer/stm32f2xx_timer.c b/hw/timer/stm32f2xx_timer.c
index c237b3053c..9a992231fa 100644
--- a/hw/timer/stm32f2xx_timer.c
+++ b/hw/timer/stm32f2xx_timer.c
@@ -394,7 +394,11 @@ static void stm32f2xx_timer_init(Object *obj)
 static void stm32f2xx_timer_realize(DeviceState *dev, Error **errp)
 {
     STM32F2XXTimerState *s = STM32F2XXTIMER(dev);
-    s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, stm32f2xx_timer_interrupt, s);
+    if (s->freq_hz == 0) {
+        error_setg(errp, "stm32f2xx_timer: Timer clock not defined");
+        return;
+    }
+    s->timer = ptimer_init(stm32f2xx_timer_tick, s, PTIMER_POLICY_LEGACY);
 }
 
 static void stm32f2xx_timer_class_init(ObjectClass *klass, void *data)
-- 
2.38.5