diff options
| author | Sebastien Boeuf <sebastien.boeuf@intel.com> | 2022-03-02 21:31:35 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-03-04 02:41:57 +0000 |
| commit | d50d9e55498c7ce8826316631cd4daa9a291f8b3 (patch) | |
| tree | cb8b3be86233e94b78276cf296ad6b79973231cf /OvmfPkg/AcpiPlatformDxe | |
| parent | e1c7f9b4e59e2df20650de3de98c2b2bc7879524 (diff) | |
| download | edk2-d50d9e55498c7ce8826316631cd4daa9a291f8b3.tar.gz edk2-d50d9e55498c7ce8826316631cd4daa9a291f8b3.tar.bz2 edk2-d50d9e55498c7ce8826316631cd4daa9a291f8b3.zip | |
OvmfPkg: CloudHv: Retrieve RSDP address from PVH
Instead of hardcoding the address of the RSDP in the firmware, let's
rely on the PVH structure hvm_start_info to retrieve this information.
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Diffstat (limited to 'OvmfPkg/AcpiPlatformDxe')
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf | 2 | ||||
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/CloudHvAcpi.c | 39 |
2 files changed, 29 insertions, 12 deletions
diff --git a/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf b/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf index b36b8413e0..f22bd7cb6d 100644 --- a/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf +++ b/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf @@ -56,6 +56,8 @@ [Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
+ gUefiOvmfPkgTokenSpaceGuid.PcdXenPvhStartOfDayStructPtr
+ gUefiOvmfPkgTokenSpaceGuid.PcdXenPvhStartOfDayStructPtrSize
[Depex]
gEfiAcpiTableProtocolGuid
diff --git a/OvmfPkg/AcpiPlatformDxe/CloudHvAcpi.c b/OvmfPkg/AcpiPlatformDxe/CloudHvAcpi.c index 44a6bb70fe..ff59600d3e 100644 --- a/OvmfPkg/AcpiPlatformDxe/CloudHvAcpi.c +++ b/OvmfPkg/AcpiPlatformDxe/CloudHvAcpi.c @@ -7,9 +7,11 @@ **/
-#include <IndustryStandard/CloudHv.h> // CLOUDHV_RSDP_ADDRESS
-#include <Library/BaseLib.h> // CpuDeadLoop()
-#include <Library/DebugLib.h> // DEBUG()
+#include <IndustryStandard/CloudHv.h> // CLOUDHV_RSDP_ADDRESS
+#include <IndustryStandard/Xen/arch-x86/hvm/start_info.h> // hvm_start_info
+#include <Library/BaseLib.h> // CpuDeadLoop()
+#include <Library/DebugLib.h> // DEBUG()
+#include <Library/PcdLib.h> // PcdGet32()
#include "AcpiPlatform.h"
@@ -23,20 +25,33 @@ InstallCloudHvTables ( EFI_STATUS Status;
UINTN TableHandle;
- EFI_ACPI_DESCRIPTION_HEADER *Xsdt;
- VOID *CurrentTableEntry;
- UINTN CurrentTablePointer;
- EFI_ACPI_DESCRIPTION_HEADER *CurrentTable;
- UINTN Index;
- UINTN NumberOfTableEntries;
- EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt2Table;
- EFI_ACPI_DESCRIPTION_HEADER *DsdtTable;
+ EFI_ACPI_DESCRIPTION_HEADER *Xsdt;
+ VOID *CurrentTableEntry;
+ UINTN CurrentTablePointer;
+ EFI_ACPI_DESCRIPTION_HEADER *CurrentTable;
+ UINTN Index;
+ UINTN NumberOfTableEntries;
+ EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt2Table;
+ EFI_ACPI_DESCRIPTION_HEADER *DsdtTable;
+ EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *AcpiRsdpStructurePtr;
+ UINT32 *PVHResetVectorData;
+ struct hvm_start_info *pvh_start_info;
Fadt2Table = NULL;
DsdtTable = NULL;
TableHandle = 0;
NumberOfTableEntries = 0;
- EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *AcpiRsdpStructurePtr = (VOID *)CLOUDHV_RSDP_ADDRESS;
+ AcpiRsdpStructurePtr = NULL;
+ PVHResetVectorData = NULL;
+ pvh_start_info = NULL;
+
+ PVHResetVectorData = (VOID *)(UINTN)PcdGet32 (PcdXenPvhStartOfDayStructPtr);
+ if (PVHResetVectorData == 0) {
+ return EFI_NOT_FOUND;
+ }
+
+ pvh_start_info = (struct hvm_start_info *)(UINTN)PVHResetVectorData[0];
+ AcpiRsdpStructurePtr = (EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *)(UINTN)pvh_start_info->rsdp_paddr;
// If XSDT table is found, just install its tables.
// Otherwise, try to find and install the RSDT tables.
|