EFI_STATUS
EFIAPI
InstallPchSpi (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Entry point for the SPI host controller driver.
Arguments:
ImageHandle Image handle of this driver.
SystemTable Global system service table.
Returns:
EFI_SUCCESS Initialization complete.
EFI_UNSUPPORTED The chipset is unsupported by this driver.
EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.
EFI_DEVICE_ERROR Device error, driver exits abnormally.
--*/
{
EFI_STATUS Status;
//
// Allocate pool for SPI protocol instance
//
Status = gSmst->SmmAllocatePool (
EfiRuntimeServicesData, // MemoryType don't care
sizeof (SPI_INSTANCE),
(VOID **) &mSpiInstance
);
if (EFI_ERROR (Status)) {
return Status;
}
if (mSpiInstance == NULL) {
return EFI_OUT_OF_RESOURCES;
}
ZeroMem ((VOID *) mSpiInstance, sizeof (SPI_INSTANCE));
//
// Initialize the SPI protocol instance
//
Status = SpiProtocolConstructor (mSpiInstance);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Install the SMM EFI_SPI_PROTOCOL interface
//
Status = gSmst->SmmInstallProtocolInterface (
&(mSpiInstance->Handle),
&gEfiSmmSpiProtocolGuid,
EFI_NATIVE_INTERFACE,
&(mSpiInstance->SpiProtocol)
);
if (EFI_ERROR (Status)) {
gSmst->SmmFreePool (mSpiInstance);
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
InstallPchSpi (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Entry point for the SPI host controller driver.
Arguments:
ImageHandle Image handle of this driver.
SystemTable Global system service table.
Returns:
EFI_SUCCESS Initialization complete.
EFI_UNSUPPORTED The chipset is unsupported by this driver.
EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.
EFI_DEVICE_ERROR Device error, driver exits abnormally.
--*/
{
EFI_STATUS Status;
UINT64 BaseAddress;
UINT64 Length;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdMemorySpaceDescriptor;
UINT64 Attributes;
EFI_EVENT Event;
DEBUG ((DEBUG_INFO, "InstallPchSpi() Start\n"));
//
// Allocate Runtime memory for the SPI protocol instance.
//
mSpiInstance = AllocateRuntimeZeroPool (sizeof (SPI_INSTANCE));
if (mSpiInstance == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Initialize the SPI protocol instance
//
Status = SpiProtocolConstructor (mSpiInstance);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Install the EFI_SPI_PROTOCOL interface
//
Status = gBS->InstallMultipleProtocolInterfaces (
&(mSpiInstance->Handle),
&gEfiSpiProtocolGuid,
&(mSpiInstance->SpiProtocol),
NULL
);
if (EFI_ERROR (Status)) {
FreePool (mSpiInstance);
return EFI_DEVICE_ERROR;
}
//
// Set RCBA space in GCD to be RUNTIME so that the range will be supported in
// virtual address mode in EFI aware OS runtime.
// It will assert if RCBA Memory Space is not allocated
// The caller is responsible for the existence and allocation of the RCBA Memory Spaces
//
BaseAddress = (EFI_PHYSICAL_ADDRESS) (mSpiInstance->PchRootComplexBar);
Length = PcdGet64 (PcdRcbaMmioSize);
Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdMemorySpaceDescriptor);
ASSERT_EFI_ERROR (Status);
Attributes = GcdMemorySpaceDescriptor.Attributes | EFI_MEMORY_RUNTIME;
Status = gDS->AddMemorySpace (
EfiGcdMemoryTypeMemoryMappedIo,
BaseAddress,
Length,
EFI_MEMORY_RUNTIME | EFI_MEMORY_UC
);
ASSERT_EFI_ERROR(Status);
Status = gDS->SetMemorySpaceAttributes (
BaseAddress,
Length,
Attributes
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
PchSpiVirtualddressChangeEvent,
NULL,
&gEfiEventVirtualAddressChangeGuid,
&Event
);
ASSERT_EFI_ERROR (Status);
DEBUG ((DEBUG_INFO, "InstallPchSpi() End\n"));
return EFI_SUCCESS;
}
