Changeset 26467 in vbox for trunk/src/VBox/Devices

Timestamp:

Feb 12, 2010 4:12:51 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

57627

Message:

EFI: sane TSC esteemation

File:

• trunk/src/VBox/Devices/EFI/DevEFI.cpp (modified) (1 diff)

trunk/src/VBox/Devices/EFI/DevEFI.cpp

@@ -1132 +1132 @@
     }
 
-    pThis->u64FsbFrequency = 1333000000;
-    pThis->u64TscFrequency = pThis->u64FsbFrequency * 3;
+    /*
+     * CPU frequencies
+     */
+    // @todo: we need to have VMM API to access TSC increase speed, for now provide reasonable default 
+    pThis->u64TscFrequency = 2500000000; // TMCpuTicksPerSecond(PDMDevHlpGetVM(pDevIns));
+    /* Multiplier is read from MSR_IA32_PERF_STATUS, and now is hardcoded as 4 */
+    pThis->u64FsbFrequency = pThis->u64TscFrequency / 4;
     pThis->u64CpuFrequency = pThis->u64TscFrequency;
     /*