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/** @file
Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Guid/MorelloVirtioDevicesFormSet.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/VirtioMmioDeviceLib.h>
#pragma pack (1)
typedef struct {
VENDOR_DEVICE_PATH VendorDevicePath;
EFI_DEVICE_PATH_PROTOCOL End;
} VIRTIO_DEVICE_PATH;
#pragma pack ()
STATIC VIRTIO_DEVICE_PATH mVirtioBlockDevicePath =
{
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8)(sizeof (VENDOR_DEVICE_PATH)),
(UINT8)((sizeof (VENDOR_DEVICE_PATH)) >> 8)
}
},
MORELLO_VIRTIO_BLOCK_GUID,
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
sizeof (EFI_DEVICE_PATH_PROTOCOL),
0
}
}
};
/**
Initialize platform Virtio devices.
**/
VOID
InitVirtioDevices (
VOID
)
{
EFI_STATUS Status;
EFI_HANDLE mVirtIoBlkController;
mVirtIoBlkController = NULL;
// Install protocol interface for storage device
if (FeaturePcdGet (PcdVirtioBlkSupported)) {
Status = gBS->InstallProtocolInterface (
&mVirtIoBlkController,
&gEfiDevicePathProtocolGuid,
EFI_NATIVE_INTERFACE,
&mVirtioBlockDevicePath
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: Failed to install EFI_DEVICE_PATH protocol "
"for Virtio Block device (Status = %r)\n",
__FUNCTION__, Status));
} else {
// Declare the Virtio BlockIo device
Status = VirtioMmioInstallDevice (
FixedPcdGet32 (PcdVirtioBlkBaseAddress),
mVirtIoBlkController
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: Unable to find Virtio Block MMIO device "
"(Status = %r)\n", __FUNCTION__, Status));
gBS->UninstallProtocolInterface (
mVirtIoBlkController,
&gEfiDevicePathProtocolGuid,
&mVirtioBlockDevicePath
);
} else {
DEBUG ((DEBUG_INIT, "%a: Installed Virtio Block device\n",
__FUNCTION__));
}
}
}
}
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