Changeset 50584 in vbox for trunk/src/VBox/Devices/EFI

Timestamp:

Feb 25, 2014 4:06:26 PM (11 years ago)

Author:

vboxsync

Message:

CPUM,DevEFI: Bus vs cpu clock ratio fixes for more recent CPUs. Older CPUs (<=Core2) still need some more work.

File:

• trunk/src/VBox/Devices/EFI/DevEFI.cpp (modified) (3 diffs)

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

@@ -23 +23 @@
 #include <VBox/vmm/pdmdev.h>
 #include <VBox/vmm/pgm.h>
+#include <VBox/vmm/cpum.h>
 #include <VBox/vmm/mm.h>
 #include <VBox/log.h>
@@ -2209 +2210 @@
                                    N_("Configuration error: Querying \"BootArgs\" as a string failed"));
 
-    //strcpy(pThis->szBootArgs, "-v keepsyms=1 io=0xf");
+    //strcpy(pThis->szBootArgs, "-v keepsyms=1 io=0xf debug=0x2a");
+    //strcpy(pThis->szBootArgs, "-v keepsyms=1 debug=0x2a");
     LogRel(("EFI: boot args = %s\n", pThis->szBootArgs));
 
@@ -2239 +2241 @@
      */
     pThis->u64TscFrequency = 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;
+    pThis->u64FsbFrequency = CPUMGetGuestBusFrequency(PDMDevHlpGetVM(pDevIns));
 
     /*