/**
Entrypoint of Acpi Platform driver.
@param ImageHandle
@param SystemTable
@return EFI_SUCCESS
@return EFI_LOAD_ERROR
@return EFI_OUT_OF_RESOURCES
**/
EFI_STATUS
EFIAPI
AcpiPlatformEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
#ifdef VBOX
VOID *VBoxTables[10];
#else
EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
#endif
INTN Instance;
EFI_ACPI_COMMON_HEADER *CurrentTable;
UINTN TableHandle;
#ifndef VBOX
UINT32 FvStatus;
#endif
UINTN TableSize;
UINTN Size;
Instance = 0;
CurrentTable = NULL;
TableHandle = 0;
//
// Find the AcpiTable protocol
//
Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID**)&AcpiTable);
if (EFI_ERROR (Status)) {
return EFI_ABORTED;
}
#ifdef VBOX
//
// VBOX already has tables prepared in memory - just reuse them.
//
FillSysTablesInfo(VBoxTables, sizeof(VBoxTables)/sizeof(VBoxTables[0]));
#else
//
//
// Locate the firmware volume protocol
//
Status = LocateFvInstanceWithTables (&FwVol);
if (EFI_ERROR (Status)) {
return EFI_ABORTED;
}
#endif
//
// Read tables from the storage file.
//
while (Status == EFI_SUCCESS) {
#ifdef VBOX
CurrentTable = (EFI_ACPI_COMMON_HEADER *)VBoxTables[Instance];
Status = (CurrentTable == NULL) ? EFI_NOT_FOUND : EFI_SUCCESS;
if (CurrentTable) {
Size = CurrentTable->Length;
DEBUG((EFI_D_ERROR, "adding %p %d\n", CurrentTable, Size));
} else
Size = 0; // Just to shut up the compiler.
#else
Status = FwVol->ReadSection (
FwVol,
(EFI_GUID*)PcdGetPtr (PcdAcpiTableStorageFile),
EFI_SECTION_RAW,
Instance,
(VOID**) &CurrentTable,
&Size,
&FvStatus
);
#endif
if (!EFI_ERROR(Status)) {
//
// Add the table
//
TableHandle = 0;
TableSize = ((EFI_ACPI_DESCRIPTION_HEADER *) CurrentTable)->Length;
#ifdef VBOX
DEBUG((DEBUG_INFO, "Size:%d, TableSize:%d\n", Size, TableSize));
#endif
ASSERT (Size >= TableSize);
//
// Checksum ACPI table
//
AcpiPlatformChecksum ((UINT8*)CurrentTable, TableSize);
//
// Install ACPI table
//
Status = AcpiTable->InstallAcpiTable (
AcpiTable,
CurrentTable,
TableSize,
&TableHandle
);
#ifndef VBOX /* In case we're reading ACPI tables from memory we haven't
allocated this memory, so it isn't required to free it */
//
// Free memory allocated by ReadSection
//
gBS->FreePool (CurrentTable);
if (EFI_ERROR(Status)) {
return EFI_ABORTED;
}
#endif
//
// Increment the instance
//
Instance++;
CurrentTable = NULL;
}
}
return EFI_SUCCESS;
}
/**
Entrypoint of Acpi Platform driver.
@param ImageHandle
@param SystemTable
@return EFI_SUCCESS
@return EFI_LOAD_ERROR
@return EFI_OUT_OF_RESOURCES
**/
EFI_STATUS
EFIAPI
AcpiPlatformEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
INTN Instance;
EFI_ACPI_COMMON_HEADER *CurrentTable;
UINTN TableHandle;
UINT32 FvStatus;
UINTN TableSize;
UINTN Size;
Instance = 0;
CurrentTable = NULL;
TableHandle = 0;
//
// Find the AcpiTable protocol
//
Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID**)&AcpiTable);
if (EFI_ERROR (Status)) {
return EFI_ABORTED;
}
//
// Locate the firmware volume protocol
//
Status = LocateFvInstanceWithTables (&FwVol);
if (EFI_ERROR (Status)) {
return EFI_ABORTED;
}
//
// Read tables from the storage file.
//
while (Status == EFI_SUCCESS) {
Status = FwVol->ReadSection (
FwVol,
(EFI_GUID*)PcdGetPtr (PcdAcpiTableStorageFile),
EFI_SECTION_RAW,
Instance,
(VOID**) &CurrentTable,
&Size,
&FvStatus
);
if (!EFI_ERROR(Status)) {
//
// Add the table
//
TableHandle = 0;
TableSize = ((EFI_ACPI_DESCRIPTION_HEADER *) CurrentTable)->Length;
ASSERT (Size >= TableSize);
//
// Checksum ACPI table
//
AcpiPlatformChecksum ((UINT8*)CurrentTable, TableSize);
//
// Install ACPI table
//
Status = AcpiTable->InstallAcpiTable (
AcpiTable,
CurrentTable,
TableSize,
&TableHandle
);
//
// Free memory allocated by ReadSection
//
gBS->FreePool (CurrentTable);
if (EFI_ERROR(Status)) {
return EFI_ABORTED;
}
//
// Increment the instance
//
Instance++;
CurrentTable = NULL;
}
}
//
// The driver does not require to be kept loaded.
//
return EFI_REQUEST_UNLOAD_IMAGE;
}
/**
Find ACPI tables in an FV and parses them. This function is useful for QEMU and KVM.
@param AcpiTable Protocol instance pointer
**/
EFI_STATUS
EFIAPI
FindAcpiTablesInFv (
IN EFI_ACPI_TABLE_PROTOCOL *AcpiTable
)
{
EFI_STATUS Status;
EFI_FIRMWARE_VOLUME2_PROTOCOL *FwVol;
INTN Instance;
EFI_ACPI_COMMON_HEADER *CurrentTable;
UINTN TableHandle;
UINT32 FvStatus;
UINTN TableSize;
UINTN Size;
EFI_ACPI_TABLE_INSTALL_ACPI_TABLE TableInstallFunction;
Instance = 0;
CurrentTable = NULL;
TableHandle = 0;
if (QemuDetected ()) {
TableInstallFunction = QemuInstallAcpiTable;
} else {
TableInstallFunction = InstallAcpiTable;
}
//
// Locate the firmware volume protocol
//
Status = LocateFvInstanceWithTables (&FwVol);
if (EFI_ERROR (Status)) {
return EFI_ABORTED;
}
//
// Read tables from the storage file.
//
while (Status == EFI_SUCCESS) {
Status = FwVol->ReadSection (
FwVol,
(EFI_GUID*)PcdGetPtr (PcdAcpiTableStorageFile),
EFI_SECTION_RAW,
Instance,
(VOID**) &CurrentTable,
&Size,
&FvStatus
);
if (!EFI_ERROR (Status)) {
//
// Add the table
//
TableHandle = 0;
TableSize = ((EFI_ACPI_DESCRIPTION_HEADER *) CurrentTable)->Length;
ASSERT (Size >= TableSize);
//
// Install ACPI table
//
Status = TableInstallFunction (
AcpiTable,
CurrentTable,
TableSize,
&TableHandle
);
//
// Free memory allocated by ReadSection
//
gBS->FreePool (CurrentTable);
if (EFI_ERROR (Status)) {
return EFI_ABORTED;
}
//
// Increment the instance
//
Instance++;
CurrentTable = NULL;
}
}
return EFI_SUCCESS;
}