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[PATCH qemu.git v3 5/8] hw/timer/imx_epit: hard reset initializes CR wit
From: |
~axelheider |
Subject: |
[PATCH qemu.git v3 5/8] hw/timer/imx_epit: hard reset initializes CR with 0 |
Date: |
Sat, 19 Nov 2022 17:09:59 +0100 |
From: Axel Heider <axel.heider@hensoldt.net>
Signed-off-by: Axel Heider <axel.heider@hensoldt.net>
---
hw/timer/imx_epit.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/hw/timer/imx_epit.c b/hw/timer/imx_epit.c
index 7af3a8b10e..39f47222d0 100644
--- a/hw/timer/imx_epit.c
+++ b/hw/timer/imx_epit.c
@@ -99,12 +99,14 @@ static void imx_epit_set_freq(IMXEPITState *s)
/*
* This is called both on hardware (device) reset and software reset.
*/
-static void imx_epit_reset(DeviceState *dev)
+static void imx_epit_reset(IMXEPITState *s, bool is_hard_reset)
{
- IMXEPITState *s = IMX_EPIT(dev);
-
/* Soft reset doesn't touch some bits; hard reset clears them */
- s->cr &= (CR_EN|CR_ENMOD|CR_STOPEN|CR_DOZEN|CR_WAITEN|CR_DBGEN);
+ if (is_hard_reset) {
+ s->cr = 0;
+ } else {
+ s->cr &= (CR_EN|CR_ENMOD|CR_STOPEN|CR_DOZEN|CR_WAITEN|CR_DBGEN);
+ }
s->sr = 0;
s->lr = EPIT_TIMER_MAX;
s->cmp = 0;
@@ -205,7 +207,7 @@ static void imx_epit_write(void *opaque, hwaddr offset,
uint64_t value,
s->cr = value & 0x03ffffff;
if (s->cr & CR_SWR) {
/* handle the reset */
- imx_epit_reset(DEVICE(s));
+ imx_epit_reset(s, false);
}
/*
@@ -377,12 +379,18 @@ static void imx_epit_realize(DeviceState *dev, Error
**errp)
s->timer_cmp = ptimer_init(imx_epit_cmp, s, PTIMER_POLICY_LEGACY);
}
+static void imx_epit_dev_reset(DeviceState *dev)
+{
+ IMXEPITState *s = IMX_EPIT(dev);
+ imx_epit_reset(s, true);
+}
+
static void imx_epit_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = imx_epit_realize;
- dc->reset = imx_epit_reset;
+ dc->reset = imx_epit_dev_reset;
dc->vmsd = &vmstate_imx_timer_epit;
dc->desc = "i.MX periodic timer";
}
--
2.34.5
- [PATCH qemu.git v3 0/8] hw/timer/imx_epit: improve and fix EPIT compare timer, ~axelheider, 2022/12/01
- [PATCH qemu.git v3 4/8] hw/timer/imx_epit: update interrupt state on CR write access, ~axelheider, 2022/12/01
- [PATCH qemu.git v3 3/8] hw/timer/imx_epit: define SR_OCIF, ~axelheider, 2022/12/01
- [PATCH qemu.git v3 8/8] hw/timer/imx_epit: fix compare timer handling, ~axelheider, 2022/12/01
- [PATCH qemu.git v3 5/8] hw/timer/imx_epit: hard reset initializes CR with 0,
~axelheider <=
- [PATCH qemu.git v3 6/8] hw/timer/imx_epit: factor out register write handlers, ~axelheider, 2022/12/01
- [PATCH qemu.git v3 2/8] hw/timer/imx_epit: cleanup CR defines, ~axelheider, 2022/12/01
- [PATCH qemu.git v3 1/8] hw/timer/imx_epit: improve comments, ~axelheider, 2022/12/01
- [PATCH qemu.git v3 7/8] hw/timer/imx_epit: remove explicit fields cnt and freq, ~axelheider, 2022/12/01