diff options
Diffstat (limited to 'Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.c')
| -rw-r--r-- | Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.c b/Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.c new file mode 100644 index 0000000000..ef40e97b7c --- /dev/null +++ b/Platform/Intel/MinPlatformPkg/Acpi/MinDsdt/MinDsdt.c @@ -0,0 +1,238 @@ +/** @file
+ Min DSDT Driver
+
+Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+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 <Base.h>
+#include <Uefi.h>
+#include <IndustryStandard/Acpi.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/IoLib.h>
+#include <Library/PcdLib.h>
+#include <Library/PciLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+#include <Protocol/FirmwareVolume2.h>
+#include <Protocol/AcpiTable.h>
+
+//
+// Function implementations
+//
+
+/**
+ Locate the first instance of a protocol. If the protocol requested is an
+ FV protocol, then it will return the first FV that contains the ACPI table
+ storage file.
+
+ @param[in] Protocol The protocol to find.
+ @param[in] FfsGuid The FFS that contains the ACPI table.
+ @param[out] Instance Return pointer to the first instance of the protocol.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_NOT_FOUND The protocol could not be located.
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources to find the protocol.
+**/
+EFI_STATUS
+LocateSupportProtocol (
+ IN EFI_GUID *Protocol,
+ IN EFI_GUID *FfsGuid,
+ OUT VOID **Instance
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE *HandleBuffer;
+ UINTN NumberOfHandles;
+ EFI_FV_FILETYPE FileType;
+ UINT32 FvStatus;
+ EFI_FV_FILE_ATTRIBUTES Attributes;
+ UINTN Size;
+ UINTN Index;
+
+ //
+ // Locate protocol.
+ //
+ Status = gBS->LocateHandleBuffer (
+ ByProtocol,
+ Protocol,
+ NULL,
+ &NumberOfHandles,
+ &HandleBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ //
+ // Defined errors at this time are not found and out of resources.
+ //
+ return Status;
+ }
+
+ //
+ // Looking for FV with ACPI storage file
+ //
+ for (Index = 0; Index < NumberOfHandles; Index++) {
+
+ //
+ // Get the protocol on this handle
+ // This should not fail because of LocateHandleBuffer
+ //
+ Status = gBS->HandleProtocol (
+ HandleBuffer[Index],
+ Protocol,
+ Instance
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // See if it has the ACPI storage file
+ //
+ Size = 0;
+ FvStatus = 0;
+ Status = ((EFI_FIRMWARE_VOLUME2_PROTOCOL *) (*Instance))->ReadFile (
+ *Instance,
+ FfsGuid,
+ NULL,
+ &Size,
+ &FileType,
+ &Attributes,
+ &FvStatus
+ );
+
+ //
+ // If we found it, then we are done
+ //
+ if (Status == EFI_SUCCESS) {
+ break;
+ }
+ }
+
+ //
+ // Our exit status is determined by the success of the previous operations
+ // If the protocol was found, Instance already points to it.
+ //
+ //
+ // Free any allocated buffers
+ //
+ FreePool (HandleBuffer);
+
+ return Status;
+}
+
+/**
+ Publish ACPI table from FV.
+
+ @param[in] FfsGuid The FFS that contains the ACPI table.
+
+ @retval EFI_SUCCESS The function completed successfully.
+**/
+EFI_STATUS
+PublishAcpiTablesFromFv (
+ IN EFI_GUID *FfsGuid
+ )
+{
+ EFI_STATUS Status;
+ EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
+ EFI_ACPI_COMMON_HEADER *CurrentTable;
+ UINT32 FvStatus;
+ UINTN Size;
+ UINTN TableHandle;
+ INTN Instance;
+ EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
+
+ Instance = 0;
+ TableHandle = 0;
+ CurrentTable = NULL;
+ FwVol = NULL;
+
+ Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **)&AcpiTable);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Locate the firmware volume protocol
+ //
+ Status = LocateSupportProtocol (
+ &gEfiFirmwareVolume2ProtocolGuid,
+ FfsGuid,
+ (VOID **) &FwVol
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Read tables from the storage file.
+ //
+
+ while (Status == EFI_SUCCESS) {
+ Status = FwVol->ReadSection (
+ FwVol,
+ FfsGuid,
+ EFI_SECTION_RAW,
+ Instance,
+ (VOID **) &CurrentTable,
+ &Size,
+ &FvStatus
+ );
+
+ if (!EFI_ERROR (Status)) {
+
+ //
+ // Add the table
+ //
+ TableHandle = 0;
+ Status = AcpiTable->InstallAcpiTable (
+ AcpiTable,
+ CurrentTable,
+ CurrentTable->Length,
+ &TableHandle
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Increment the instance
+ //
+ Instance++;
+ CurrentTable = NULL;
+ }
+ }
+
+ //
+ // Finished
+ //
+ return EFI_SUCCESS;
+}
+
+/**
+ ACPI Platform driver installation function.
+
+ @param[in] ImageHandle Handle for this drivers loaded image protocol.
+ @param[in] SystemTable EFI system table.
+
+ @retval EFI_SUCCESS The driver installed without error.
+ @retval EFI_ABORTED The driver encountered an error and could not complete installation of
+ the ACPI tables.
+
+**/
+EFI_STATUS
+EFIAPI
+InstallMinDsdt (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ Status = PublishAcpiTablesFromFv (&gEfiCallerIdGuid);
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}
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