diff options
| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-07-31 18:17:51 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-07-31 18:17:51 +0000 |
| commit | 253a2ea73fe0a3a02177c25930c289df77e122b2 (patch) | |
| tree | c105877707671963e40e460d3e16eeb245aeb080 /OvmfPkg/AcpiPlatformDxe | |
| parent | cb678aa85e6199ff28c7ce5d8a9d9eb96a42c851 (diff) | |
| download | edk2-platforms-253a2ea73fe0a3a02177c25930c289df77e122b2.tar.xz | |
OvmfPkg: install an SSDT with a dynamic OperationRegion called FWDT
"FWDT" ("firmware data") is allocated as EfiReservedMemoryType, with
AllocateReservedPool(). <MdePkg/Include/Library/MemoryAllocationLib.h>
doesn't seem to provide direct access to EfiACPIReclaimMemory, but at this
point the former seems sufficient.
Based on SeaBIOS commit 2062f2ba by Gerd Hoffmann <kraxel@redhat.com>.
v3:
- coding style fixes:
- BDAT -> FWDT
- __packed -> #pragma pack(1)
- BFLD -> FIRMWARE_DATA, PCI_WINDOW
- Bfld -> FwData
- Ssdt.asl: changed license to 2-clause BSDL, paraphrasing Dsdt.asl
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13573 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/AcpiPlatformDxe')
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/Qemu.c | 106 |
1 files changed, 105 insertions, 1 deletions
diff --git a/OvmfPkg/AcpiPlatformDxe/Qemu.c b/OvmfPkg/AcpiPlatformDxe/Qemu.c index f7736c2b71..7088733905 100644 --- a/OvmfPkg/AcpiPlatformDxe/Qemu.c +++ b/OvmfPkg/AcpiPlatformDxe/Qemu.c @@ -10,7 +10,7 @@ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-**/
+**/
#include "AcpiPlatform.h"
#include <Library/BaseMemoryLib.h>
@@ -98,6 +98,107 @@ QemuInstallAcpiMadtTable ( }
+#pragma pack(1)
+
+typedef struct {
+ UINT64 Base;
+ UINT64 End;
+ UINT64 Length;
+} PCI_WINDOW;
+
+typedef struct {
+ PCI_WINDOW PciWindow32;
+ PCI_WINDOW PciWindow64;
+} FIRMWARE_DATA;
+
+#pragma pack()
+
+
+STATIC
+EFI_STATUS
+EFIAPI
+PopulateFwData(
+ OUT FIRMWARE_DATA *FwData
+ )
+{
+ return EFI_SUCCESS;
+}
+
+
+STATIC
+EFI_STATUS
+EFIAPI
+QemuInstallAcpiSsdtTable (
+ IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,
+ IN VOID *AcpiTableBuffer,
+ IN UINTN AcpiTableBufferSize,
+ OUT UINTN *TableKey
+ )
+{
+ EFI_STATUS Status;
+ FIRMWARE_DATA *FwData;
+
+ Status = EFI_OUT_OF_RESOURCES;
+
+ FwData = AllocateReservedPool (sizeof (*FwData));
+ if (FwData != NULL) {
+ UINTN SsdtSize;
+ UINT8 *Ssdt;
+
+ SsdtSize = AcpiTableBufferSize + 17;
+ Ssdt = AllocatePool (SsdtSize);
+
+ if (Ssdt != NULL) {
+ Status = PopulateFwData (FwData);
+
+ if (Status == EFI_SUCCESS) {
+ UINT8 *SsdtPtr;
+
+ SsdtPtr = Ssdt;
+
+ CopyMem (SsdtPtr, AcpiTableBuffer, AcpiTableBufferSize);
+ SsdtPtr += AcpiTableBufferSize;
+
+ //
+ // build "OperationRegion(FWDT, SystemMemory, 0x12345678, 0x87654321)"
+ //
+ *(SsdtPtr++) = 0x5B; // ExtOpPrefix
+ *(SsdtPtr++) = 0x80; // OpRegionOp
+ *(SsdtPtr++) = 'F';
+ *(SsdtPtr++) = 'W';
+ *(SsdtPtr++) = 'D';
+ *(SsdtPtr++) = 'T';
+ *(SsdtPtr++) = 0x00; // SystemMemory
+ *(SsdtPtr++) = 0x0C; // DWordPrefix
+
+ //
+ // no virtual addressing yet, take the four least significant bytes
+ //
+ CopyMem(SsdtPtr, &FwData, 4);
+ SsdtPtr += 4;
+
+ *(SsdtPtr++) = 0x0C; // DWordPrefix
+
+ *(UINT32*) SsdtPtr = sizeof (*FwData);
+ SsdtPtr += 4;
+
+ ASSERT(SsdtPtr - Ssdt == SsdtSize);
+ ((EFI_ACPI_DESCRIPTION_HEADER *) Ssdt)->Length = SsdtSize;
+ Status = InstallAcpiTable (AcpiProtocol, Ssdt, SsdtSize, TableKey);
+ }
+
+ FreePool(Ssdt);
+ }
+
+ if (Status != EFI_SUCCESS) {
+ FreePool(FwData);
+ }
+ }
+
+ return Status;
+}
+
+
EFI_STATUS
EFIAPI
QemuInstallAcpiTable (
@@ -115,6 +216,9 @@ QemuInstallAcpiTable ( case EFI_ACPI_1_0_APIC_SIGNATURE:
TableInstallFunction = QemuInstallAcpiMadtTable;
break;
+ case EFI_ACPI_1_0_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE:
+ TableInstallFunction = QemuInstallAcpiSsdtTable;
+ break;
default:
TableInstallFunction = InstallAcpiTable;
}
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