9b6bbcdbfd
Changes for V4 ============== 1) Remove Unicode character from C source file 2) Move delete of QuarkSocPkg\QuarkNorthCluster\Binary\QuarkMicrocode from QuarkPlatformPkg commit to QuarkSocPkg commit Changes for V2 ============== 1) Sync with new APIs in SmmCpuFeaturesLib class 2) Use new generic PCI serial driver PciSioSerialDxe in MdeModulePkg 3) Remove PCI serial driver from QuarkSocPkg 4) Apply optimizations to MtrrLib from MtrrLib in UefiCpuPkg 5) Convert all UNI files to utf-8 6) Replace tabs with spaces and remove trailing spaces 7) Add License.txt Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19286 6f19259b-4bc3-4df7-8a09-765794883524
396 lines
11 KiB
C
396 lines
11 KiB
C
/** @file
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This is the driver that publishes the SMM Access Protocol
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instance for the Tylersburg chipset.
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Copyright (c) 2013-2015 Intel Corporation.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "SmmAccessDriver.h"
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SMM_ACCESS_PRIVATE_DATA mSmmAccess;
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VOID
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SmmAccessOnBoot (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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EFI_STATUS
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EFIAPI
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SmmAccessDriverEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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Installs an SMM Access Protocol.
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Arguments:
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ImageHandle - Handle for the image of this driver.
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SystemTable - Pointer to the EFI System Table.
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Returns:
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EFI_SUCCESS - Protocol successfully started and installed.
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EFI_UNSUPPORTED - Protocol can't be started.
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EFI_NOT_FOUND - Protocol not found.
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--*/
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{
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EFI_STATUS Status;
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EFI_EVENT BootEvent;
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
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UINTN Index;
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EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *DescriptorBlock;
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EFI_HOB_GUID_TYPE *GuidHob;
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//
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// Initialize private data
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//
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ZeroMem (&mSmmAccess, sizeof (mSmmAccess));
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Status = gBS->LocateProtocol (
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&gEfiPciRootBridgeIoProtocolGuid,
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NULL,
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(VOID **) &PciRootBridgeIo
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);
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ASSERT_EFI_ERROR (Status);
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//
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// Build SMM related information
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//
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mSmmAccess.Signature = SMM_ACCESS_PRIVATE_DATA_SIGNATURE;
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mSmmAccess.Handle = NULL;
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mSmmAccess.PciRootBridgeIo = PciRootBridgeIo;
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//
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// Get Hob list
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//
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GuidHob = GetFirstGuidHob (&gEfiSmmPeiSmramMemoryReserveGuid);
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DescriptorBlock = GET_GUID_HOB_DATA (GuidHob);
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ASSERT (DescriptorBlock);
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//
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// Get CPU Max bus number
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//
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mSmmAccess.MaxBusNumber = PCI_BUS_NUMBER_QNC;
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for (Index = 0; Index < MAX_CPU_SOCKET; Index++) {
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mSmmAccess.SocketPopulated[Index] = TRUE;
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}
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//
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// Use the hob to publish SMRAM capabilities
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//
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ASSERT (DescriptorBlock->NumberOfSmmReservedRegions <= MAX_SMRAM_RANGES);
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for (Index = 0; Index < DescriptorBlock->NumberOfSmmReservedRegions; Index++) {
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mSmmAccess.SmramDesc[Index].PhysicalStart = DescriptorBlock->Descriptor[Index].PhysicalStart;
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mSmmAccess.SmramDesc[Index].CpuStart = DescriptorBlock->Descriptor[Index].CpuStart;
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mSmmAccess.SmramDesc[Index].PhysicalSize = DescriptorBlock->Descriptor[Index].PhysicalSize;
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mSmmAccess.SmramDesc[Index].RegionState = DescriptorBlock->Descriptor[Index].RegionState;
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DEBUG ((EFI_D_INFO, "SM RAM index[%d] startaddr:%08X Size :%08X\n", Index, mSmmAccess.SmramDesc[Index].CpuStart,
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mSmmAccess.SmramDesc[Index].PhysicalSize));
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}
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mSmmAccess.NumberRegions = Index;
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mSmmAccess.SmmAccess.Open = Open;
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mSmmAccess.SmmAccess.Close = Close;
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mSmmAccess.SmmAccess.Lock = Lock;
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mSmmAccess.SmmAccess.GetCapabilities = GetCapabilities;
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mSmmAccess.SmmAccess.LockState = FALSE;
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mSmmAccess.SmmAccess.OpenState = FALSE;
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mSmmAccess.SMMRegionState = EFI_SMRAM_CLOSED;
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//
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// Install our protocol interfaces on the device's handle
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&mSmmAccess.Handle,
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&gEfiSmmAccess2ProtocolGuid,
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&mSmmAccess.SmmAccess,
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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DEBUG ((EFI_D_INFO, "SMM Base: %08X\n", (UINT32)(mSmmAccess.SmramDesc[mSmmAccess.NumberRegions-1].PhysicalStart)));
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DEBUG ((EFI_D_INFO, "SMM Size: %08X\n", (UINT32)(mSmmAccess.SmramDesc[mSmmAccess.NumberRegions-1].PhysicalSize)));
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mSmmAccess.TsegSize = (UINT8)(mSmmAccess.SmramDesc[mSmmAccess.NumberRegions-1].PhysicalSize);
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//
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// T Seg setting done in QPI RC
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//
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//
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// Prior ReadyToBoot, lock CSEG
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//
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Status = EfiCreateEventReadyToBootEx(
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TPL_NOTIFY,
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SmmAccessOnBoot,
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NULL,
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&BootEvent );
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ASSERT (!EFI_ERROR (Status));
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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Open (
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IN EFI_SMM_ACCESS2_PROTOCOL *This
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)
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/*++
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Routine Description:
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This routine accepts a request to "open" a region of SMRAM. The
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region could be legacy ABSEG, HSEG, or TSEG near top of physical memory.
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The use of "open" means that the memory is visible from all boot-service
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and SMM agents.
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Arguments:
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This - Pointer to the SMM Access Interface.
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DescriptorIndex - Region of SMRAM to Open.
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Returns:
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EFI_SUCCESS - The region was successfully opened.
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EFI_DEVICE_ERROR - The region could not be opened because locked by
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chipset.
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EFI_INVALID_PARAMETER - The descriptor index was out of bounds.
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--*/
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{
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SMM_ACCESS_PRIVATE_DATA *SmmAccess;
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SmmAccess = SMM_ACCESS_PRIVATE_DATA_FROM_THIS (This);
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if (mSmmAccess.SMMRegionState & EFI_SMRAM_LOCKED) {
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DEBUG ((EFI_D_ERROR, "Cannot open a locked SMRAM region\n"));
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return EFI_DEVICE_ERROR;
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}
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//
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// Open TSEG
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//
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if (!QNCOpenSmramRegion ()) {
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mSmmAccess.SMMRegionState |= EFI_SMRAM_LOCKED;
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return EFI_DEVICE_ERROR;
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}
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mSmmAccess.SMMRegionState &= ~(EFI_SMRAM_CLOSED | EFI_ALLOCATED);
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SyncRegionState2SmramDesc(FALSE, (UINT64)(UINTN)(~(EFI_SMRAM_CLOSED | EFI_ALLOCATED)));
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mSmmAccess.SMMRegionState |= EFI_SMRAM_OPEN;
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SyncRegionState2SmramDesc(TRUE, EFI_SMRAM_OPEN);
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SmmAccess->SmmAccess.OpenState = TRUE;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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Close (
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IN EFI_SMM_ACCESS2_PROTOCOL *This
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)
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/*++
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Routine Description:
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This routine accepts a request to "close" a region of SMRAM. This is valid for
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compatible SMRAM region.
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Arguments:
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This - Pointer to the SMM Access Interface.
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DescriptorIndex - Region of SMRAM to Close.
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Returns:
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EFI_SUCCESS - The region was successfully closed.
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EFI_DEVICE_ERROR - The region could not be closed because locked by
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chipset.
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EFI_INVALID_PARAMETER - The descriptor index was out of bounds.
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--*/
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{
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SMM_ACCESS_PRIVATE_DATA *SmmAccess;
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BOOLEAN OpenState;
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UINTN Index;
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SmmAccess = SMM_ACCESS_PRIVATE_DATA_FROM_THIS (This);
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if (mSmmAccess.SMMRegionState & EFI_SMRAM_LOCKED) {
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//
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// Cannot close a "locked" region
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//
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DEBUG ((EFI_D_WARN, "Cannot close the locked SMRAM Region\n"));
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return EFI_DEVICE_ERROR;
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}
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if (mSmmAccess.SMMRegionState & EFI_SMRAM_CLOSED) {
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return EFI_DEVICE_ERROR;
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}
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//
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// Close TSEG
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//
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if (!QNCCloseSmramRegion ()) {
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mSmmAccess.SMMRegionState |= EFI_SMRAM_LOCKED;
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return EFI_DEVICE_ERROR;
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}
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mSmmAccess.SMMRegionState &= ~EFI_SMRAM_OPEN;
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SyncRegionState2SmramDesc(FALSE, (UINT64)(UINTN)(~EFI_SMRAM_OPEN));
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mSmmAccess.SMMRegionState |= (EFI_SMRAM_CLOSED | EFI_ALLOCATED);
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SyncRegionState2SmramDesc(TRUE, EFI_SMRAM_CLOSED | EFI_ALLOCATED);
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//
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// Find out if any regions are still open
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//
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OpenState = FALSE;
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for (Index = 0; Index < mSmmAccess.NumberRegions; Index++) {
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if ((SmmAccess->SmramDesc[Index].RegionState & EFI_SMRAM_OPEN) == EFI_SMRAM_OPEN) {
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OpenState = TRUE;
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}
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}
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SmmAccess->SmmAccess.OpenState = OpenState;
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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Lock (
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IN EFI_SMM_ACCESS2_PROTOCOL *This
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)
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/*++
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Routine Description:
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This routine accepts a request to "lock" SMRAM. The
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region could be legacy AB or TSEG near top of physical memory.
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The use of "lock" means that the memory can no longer be opened
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to BS state..
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Arguments:
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This - Pointer to the SMM Access Interface.
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DescriptorIndex - Region of SMRAM to Lock.
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Returns:
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EFI_SUCCESS - The region was successfully locked.
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EFI_DEVICE_ERROR - The region could not be locked because at least
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one range is still open.
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EFI_INVALID_PARAMETER - The descriptor index was out of bounds.
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--*/
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{
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SMM_ACCESS_PRIVATE_DATA *SmmAccess;
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SmmAccess = SMM_ACCESS_PRIVATE_DATA_FROM_THIS (This);
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if (SmmAccess->SmmAccess.OpenState) {
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return EFI_DEVICE_ERROR;
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}
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mSmmAccess.SMMRegionState |= EFI_SMRAM_LOCKED;
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SyncRegionState2SmramDesc(TRUE, EFI_SMRAM_LOCKED);
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SmmAccess->SmmAccess.LockState = TRUE;
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//
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// Lock TSEG
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//
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QNCLockSmramRegion ();
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return EFI_SUCCESS;
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}
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EFI_STATUS
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EFIAPI
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GetCapabilities (
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IN CONST EFI_SMM_ACCESS2_PROTOCOL *This,
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IN OUT UINTN *SmramMapSize,
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IN OUT EFI_SMRAM_DESCRIPTOR *SmramMap
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)
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/*++
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Routine Description:
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This routine services a user request to discover the SMRAM
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capabilities of this platform. This will report the possible
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ranges that are possible for SMRAM access, based upon the
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memory controller capabilities.
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Arguments:
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This - Pointer to the SMRAM Access Interface.
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SmramMapSize - Pointer to the variable containing size of the
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buffer to contain the description information.
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SmramMap - Buffer containing the data describing the Smram
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region descriptors.
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Returns:
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EFI_BUFFER_TOO_SMALL - The user did not provide a sufficient buffer.
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EFI_SUCCESS - The user provided a sufficiently-sized buffer.
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--*/
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{
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EFI_STATUS Status;
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SMM_ACCESS_PRIVATE_DATA *SmmAccess;
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UINTN BufferSize;
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SmmAccess = SMM_ACCESS_PRIVATE_DATA_FROM_THIS (This);
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BufferSize = SmmAccess->NumberRegions * sizeof (EFI_SMRAM_DESCRIPTOR);
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if (*SmramMapSize < BufferSize) {
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Status = EFI_BUFFER_TOO_SMALL;
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} else {
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CopyMem (SmramMap, SmmAccess->SmramDesc, *SmramMapSize);
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Status = EFI_SUCCESS;
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}
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*SmramMapSize = BufferSize;
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return Status;
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}
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VOID
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SmmAccessOnBoot (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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}
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VOID
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SyncRegionState2SmramDesc(
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IN BOOLEAN OrAnd,
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IN UINT64 Value
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)
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{
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UINT32 Index;
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for (Index = 0; Index < mSmmAccess.NumberRegions; Index++) {
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if (OrAnd) {
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mSmmAccess.SmramDesc[Index].RegionState |= Value;
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} else {
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mSmmAccess.SmramDesc[Index].RegionState &= Value;
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}
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}
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}
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