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/** @file
Copyright (c) 2013-2015, ARM Ltd. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which 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 "ArmVExpressInternal.h"
#include <PiDxe.h>
#include <Library/BaseMemoryLib.h>
#include <Library/VirtioMmioDeviceLib.h>
#include <Library/ArmShellCmdLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DevicePathLib.h>
#include <Protocol/FirmwareVolume2.h>
#define ARM_FVP_BASE_VIRTIO_BLOCK_BASE 0x1c130000
#pragma pack(1)
typedef struct {
VENDOR_DEVICE_PATH Vendor;
EFI_DEVICE_PATH_PROTOCOL End;
} VIRTIO_BLK_DEVICE_PATH;
#pragma pack()
VIRTIO_BLK_DEVICE_PATH mVirtioBlockDevicePath =
{
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8)( sizeof(VENDOR_DEVICE_PATH) ),
(UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8)
}
},
EFI_CALLER_ID_GUID,
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
sizeof (EFI_DEVICE_PATH_PROTOCOL),
0
}
}
};
STATIC
EFI_STATUS
InternalFindFdtByGuid (
IN OUT EFI_DEVICE_PATH **FdtDevicePath,
IN CONST EFI_GUID *FdtGuid
)
{
MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FileDevicePath;
EFI_HANDLE *HandleBuffer;
UINTN HandleCount;
UINTN Index;
EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol;
EFI_GUID NameGuid;
UINTN Size;
VOID *Key;
EFI_FV_FILETYPE FileType;
EFI_FV_FILE_ATTRIBUTES Attributes;
EFI_DEVICE_PATH *FvDevicePath;
EFI_STATUS Status;
if (FdtGuid == NULL) {
return EFI_NOT_FOUND;
}
EfiInitializeFwVolDevicepathNode (&FileDevicePath, FdtGuid);
HandleBuffer = NULL;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiFirmwareVolume2ProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
if (EFI_ERROR (Status)) {
return Status;
}
for (Index = 0; Index < HandleCount; Index++) {
Status = gBS->HandleProtocol (
HandleBuffer[Index],
&gEfiFirmwareVolume2ProtocolGuid,
(VOID **) &FvProtocol
);
if (EFI_ERROR (Status)) {
return Status;
}
// Allocate Key
Key = AllocatePool (FvProtocol->KeySize);
ASSERT (Key != NULL);
ZeroMem (Key, FvProtocol->KeySize);
do {
FileType = EFI_FV_FILETYPE_RAW;
Status = FvProtocol->GetNextFile (FvProtocol, Key, &FileType, &NameGuid, &Attributes, &Size);
if (Status == EFI_NOT_FOUND) {
break;
}
if (EFI_ERROR (Status)) {
return Status;
}
//
// Check whether this file is the one we are looking for. If so,
// create a device path for it and return it to the caller.
//
if (CompareGuid (&NameGuid, FdtGuid)) {
Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID **)&FvDevicePath);
if (!EFI_ERROR (Status)) {
*FdtDevicePath = AppendDevicePathNode (FvDevicePath,
(EFI_DEVICE_PATH_PROTOCOL *)&FileDevicePath);
}
goto Done;
}
} while (TRUE);
FreePool (Key);
}
if (Index == HandleCount) {
Status = EFI_NOT_FOUND;
}
return Status;
Done:
FreePool (Key);
return Status;
}
/**
* Generic UEFI Entrypoint for 'ArmFvpDxe' driver
* See UEFI specification for the details of the parameters
*/
EFI_STATUS
EFIAPI
ArmFvpInitialise (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
CONST ARM_VEXPRESS_PLATFORM* Platform;
EFI_STATUS Status;
CHAR16 *TextDevicePath;
UINTN TextDevicePathSize;
VOID *Buffer;
EFI_DEVICE_PATH *FdtDevicePath;
Status = gBS->InstallProtocolInterface (&ImageHandle,
&gEfiDevicePathProtocolGuid, EFI_NATIVE_INTERFACE,
&mVirtioBlockDevicePath);
if (EFI_ERROR (Status)) {
return Status;
}
Status = ArmVExpressGetPlatform (&Platform);
if (!EFI_ERROR (Status)) {
FdtDevicePath = NULL;
Status = InternalFindFdtByGuid (&FdtDevicePath, Platform->FdtGuid);
if (!EFI_ERROR (Status)) {
TextDevicePath = ConvertDevicePathToText (FdtDevicePath, FALSE, FALSE);
if (TextDevicePath != NULL) {
TextDevicePathSize = StrSize (TextDevicePath);
}
FreePool (FdtDevicePath);
} else {
TextDevicePathSize = StrSize ((CHAR16*)PcdGetPtr (PcdFvpFdtDevicePathsBase)) - sizeof (CHAR16);
TextDevicePathSize += StrSize (Platform->FdtName);
TextDevicePath = AllocatePool (TextDevicePathSize);
if (TextDevicePath != NULL) {
StrCpy (TextDevicePath, ((CHAR16*)PcdGetPtr (PcdFvpFdtDevicePathsBase)));
StrCat (TextDevicePath, Platform->FdtName);
}
}
if (TextDevicePath != NULL) {
Buffer = PcdSetPtr (PcdFdtDevicePaths, &TextDevicePathSize, TextDevicePath);
if (Buffer == NULL) {
DEBUG ((
EFI_D_ERROR,
"ArmFvpDxe: Setting of FDT device path in PcdFdtDevicePaths failed - %r\n", EFI_BUFFER_TOO_SMALL
));
}
FreePool (TextDevicePath);
}
}
// Declare the Virtio BlockIo device
Status = VirtioMmioInstallDevice (ARM_FVP_BASE_VIRTIO_BLOCK_BASE, ImageHandle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "ArmFvpDxe: Failed to install Virtio block device\n"));
}
// Install dynamic Shell command to run baremetal binaries.
Status = ShellDynCmdRunAxfInstall (ImageHandle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "ArmFvpDxe: Failed to install ShellDynCmdRunAxf\n"));
}
return Status;
}
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