hw/char/pl011: implement a reset method

PL011 currently lacks a reset method. Implement it.

Signed-off-by: Evgeny Iakovlev <eiakovlev@linux.microsoft.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230123162304.26254-4-eiakovlev@linux.microsoft.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 21 insertions, 5 deletions

diff --git a/hw/char/pl011.c b/hw/char/pl011.c
index 05e8bdc..ca7537d 100644
--- a/hw/char/pl011.c
+++ b/hw/char/pl011.c
@@ -427,11 +427,6 @@ static void pl011_init(Object *obj)
     s->clk = qdev_init_clock_in(DEVICE(obj), "clk", pl011_clock_update, s,
                                 ClockUpdate);
 
-    s->read_trigger = 1;
-    s->ifl = 0x12;
-    s->cr = 0x300;
-    s->flags = 0x90;
-
     s->id = pl011_id_arm;
 }
 
@@ -443,11 +438,32 @@ static void pl011_realize(DeviceState *dev, Error **errp)
                              pl011_event, NULL, s, NULL, true);
 }
 
+static void pl011_reset(DeviceState *dev)
+{
+    PL011State *s = PL011(dev);
+
+    s->lcr = 0;
+    s->rsr = 0;
+    s->dmacr = 0;
+    s->int_enabled = 0;
+    s->int_level = 0;
+    s->ilpr = 0;
+    s->ibrd = 0;
+    s->fbrd = 0;
+    s->read_pos = 0;
+    s->read_count = 0;
+    s->read_trigger = 1;
+    s->ifl = 0x12;
+    s->cr = 0x300;
+    s->flags = 0x90;
+}
+
 static void pl011_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
 
     dc->realize = pl011_realize;
+    dc->reset = pl011_reset;
     dc->vmsd = &vmstate_pl011;
     device_class_set_props(dc, pl011_properties);
 }