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[PATCH v2 2/4] hw/char/pl011: implement a reset method
From: |
Evgeny Iakovlev |
Subject: |
[PATCH v2 2/4] hw/char/pl011: implement a reset method |
Date: |
Tue, 17 Jan 2023 23:05:21 +0100 |
PL011 currently lacks a reset method. Implement it.
Signed-off-by: Evgeny Iakovlev <eiakovlev@linux.microsoft.com>
---
hw/char/pl011.c | 31 ++++++++++++++++++++++++++-----
1 file changed, 26 insertions(+), 5 deletions(-)
diff --git a/hw/char/pl011.c b/hw/char/pl011.c
index 329cc6926d..404d52a3b8 100644
--- a/hw/char/pl011.c
+++ b/hw/char/pl011.c
@@ -397,11 +397,6 @@ 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;
}
@@ -413,11 +408,37 @@ static void pl011_realize(DeviceState *dev, Error **errp)
pl011_event, NULL, s, NULL, true);
}
+static void pl011_reset(DeviceState *dev)
+{
+ PL011State *s = PL011(dev);
+ int i;
+
+ 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;
+
+ for (i = 0; i < ARRAY_SIZE(s->irq); i++) {
+ qemu_irq_lower(s->irq[i]);
+ }
+}
+
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);
}
--
2.34.1
[PATCH v2 4/4] hw/char/pl011: check if UART is enabled before RX or TX operation, Evgeny Iakovlev, 2023/01/17