[PATCH 1/1] hw/timer/sse-timer: Add CNTFRQ reset property

[Joe Komlodi <komlodi@google.com>]

This can have a non-zero reset value, and cause the kernel to complain
about a CNTFRQ mismatch if TF-A (or firmware in general) does not
initialize it (because it expects the value to be non-zero out of
reset).

To fix this, we'll just add an object property that people can use to
initialize the CNTFRQ reset value.

Signed-off-by: Joe Komlodi <komlodi@google.com>
---
 hw/timer/sse-timer.c         | 4 +++-
 include/hw/timer/sse-timer.h | 2 ++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/hw/timer/sse-timer.c b/hw/timer/sse-timer.c
index e92e83747d..a727f05bac 100644
--- a/hw/timer/sse-timer.c
+++ b/hw/timer/sse-timer.c
@@ -376,7 +376,7 @@ static void sse_timer_reset(DeviceState *dev)
     trace_sse_timer_reset();
 
     timer_del(&s->timer);
-    s->cntfrq = 0;
+    s->cntfrq = s->cntfrq_reset;
     s->cntp_ctl = 0;
     s->cntp_cval = 0;
     s->cntp_aival = 0;
@@ -430,6 +430,7 @@ static const VMStateDescription sse_timer_vmstate = {
     .minimum_version_id = 1,
     .fields = (VMStateField[]) {
         VMSTATE_TIMER(timer, SSETimer),
+        VMSTATE_UINT32(cntfrq_reset, SSETimer),
         VMSTATE_UINT32(cntfrq, SSETimer),
         VMSTATE_UINT32(cntp_ctl, SSETimer),
         VMSTATE_UINT64(cntp_cval, SSETimer),
@@ -442,6 +443,7 @@ static const VMStateDescription sse_timer_vmstate = {
 
 static Property sse_timer_properties[] = {
     DEFINE_PROP_LINK("counter", SSETimer, counter, TYPE_SSE_COUNTER, SSECounter *),
+    DEFINE_PROP_UINT32("cntfrq-reset", SSETimer, cntfrq_reset, 0),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/include/hw/timer/sse-timer.h b/include/hw/timer/sse-timer.h
index 265ad32400..ad84c24940 100644
--- a/include/hw/timer/sse-timer.h
+++ b/include/hw/timer/sse-timer.h
@@ -43,6 +43,8 @@ struct SSETimer {
     QEMUTimer timer;
     Notifier counter_notifier;
 
+    uint32_t cntfrq_reset;
+
     uint32_t cntfrq;
     uint32_t cntp_ctl;
     uint64_t cntp_cval;
-- 
2.42.0.459.ge4e396fd5e-goog