diff options
Diffstat (limited to 'OvmfPkg/AcpiPlatformDxe')
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/Xen.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/OvmfPkg/AcpiPlatformDxe/Xen.c b/OvmfPkg/AcpiPlatformDxe/Xen.c index 82794b933e..f80dfe1a57 100644 --- a/OvmfPkg/AcpiPlatformDxe/Xen.c +++ b/OvmfPkg/AcpiPlatformDxe/Xen.c @@ -36,10 +36,27 @@ GetXenAcpiRsdp ( EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *RsdpStructurePtr;
UINT8 *XenAcpiPtr;
UINT8 Sum;
+ EFI_XEN_INFO *XenInfo;
//
// Detect the RSDP structure
//
+
+ //
+ // First look for PVH one
+ //
+ XenInfo = XenGetInfoHOB ();
+ ASSERT (XenInfo != NULL);
+ if (XenInfo->RsdpPvh != NULL) {
+ DEBUG ((DEBUG_INFO, "%a: Use ACPI RSDP table at 0x%p\n",
+ gEfiCallerBaseName, XenInfo->RsdpPvh));
+ *RsdpPtr = XenInfo->RsdpPvh;
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Otherwise, look for the HVM one
+ //
for (XenAcpiPtr = (UINT8*)(UINTN) XEN_ACPI_PHYSICAL_ADDRESS;
XenAcpiPtr < (UINT8*)(UINTN) XEN_BIOS_PHYSICAL_END;
XenAcpiPtr += 0x10) {
|