Changeset 100143 in vbox

Timestamp:

Jun 9, 2023 3:36:00 PM (20 months ago)

Author:

vboxsync

Message:

Devices/Misc/DevPL031.cpp: Add option to load the current time into the load register so the guest sees a valid time, bugref:10435

File:

• trunk/src/VBox/Devices/Misc/DevPL031.cpp (modified) (4 diffs)

trunk/src/VBox/Devices/Misc/DevPL031.cpp

@@ -122 +122 @@
     /** The IRQ value. */
     uint16_t                        u16Irq;
+    /** Flag whether to preload the load rgeister with the current time. */
+    bool                            fLoadTime;
+    /** Flag whether to use UTC for the time offset. */
+    bool                            fUtcOffset;
 
     /** @name Registers.
@@ -467 +471 @@
     pThis->fRtcIrqMasked    = false;
     pThis->fRtcIrqSts       = false;
+
+    if (pThis->fLoadTime)
+    {
+        RTTIMESPEC  Now;
+        PDMDevHlpTMUtcNow(pDevIns, &Now);
+        if (!pThis->fUtcOffset)
+        {
+            RTTIME Time;
+            RTTimeLocalExplode(&Time, &Now);
+            RTTimeImplode(&Now, &Time);
+        }
+
+        pThis->u32RtcLr = (uint32_t)RTTimeSpecGetSeconds(&Now);
+    }
 }
 
@@ -498 +516 @@
      * Validate and read the configuration.
      */
-    PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "Irq|MmioBase", "");
+    PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "Irq|MmioBase|LoadTime|UtcOffset", "");
 
     uint16_t u16Irq = 0;
@@ -510 +528 @@
         return PDMDEV_SET_ERROR(pDevIns, rc,
                                 N_("Configuration error: Failed to get the \"MmioBase\" value"));
+
+    rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "LoadTime", &pThis->fLoadTime, true);
+    if (RT_FAILURE(rc))
+        return PDMDEV_SET_ERROR(pDevIns, rc,
+                                N_("Configuration error: Querying \"LoadTime\" as a bool failed"));
+
+    rc = pHlp->pfnCFGMQueryBoolDef(pCfg, "UtcOffset", &pThis->fUtcOffset, false);
+    if (RT_FAILURE(rc))
+        return PDMDEV_SET_ERROR(pDevIns, rc,
+                                N_("Configuration error: Querying \"UtcOffset\" as a bool failed"));
 
     pThis->u16Irq         = u16Irq;