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/** @file
*
* Copyright (c) 2015, Linaro Ltd. All rights reserved.
* Copyright (c) 2015, Hisilicon Ltd. All rights reserved.
*
* 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 <Library/BaseMemoryLib.h>
#include <Library/BdsLib.h>
#include <Library/CacheMaintenanceLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Guid/ArmGlobalVariableHob.h>
#include <Protocol/BlockIo.h>
#include "HiKeyDxeInternal.h"
#define SERIAL_NUMBER_LENGTH 16
#define SERIAL_NUMBER_LBA 1024
#define SERIAL_NUMBER_BLOCK_SIZE 512
#define RANDOM_MAGIC 0x9a4dbeaf
struct RandomSerialNo {
UINTN Magic;
UINTN Data;
CHAR8 SerialNo[32];
};
STATIC
UINTN
EFIAPI
HiKeyInitSerialNo (
IN VOID
)
{
EFI_STATUS Status;
UINTN VariableSize;
EFI_DEVICE_PATH_PROTOCOL *BlockDevicePath;
EFI_BLOCK_IO_PROTOCOL *BlockIoProtocol;
EFI_HANDLE Handle;
VOID *DataPtr;
struct RandomSerialNo *Random;
CHAR16 DefaultSerialNo[] = L"0123456789abcdef";
CHAR16 SerialNoUnicode[32], DataUnicode[32];
BlockDevicePath = ConvertTextToDevicePath ((CHAR16*)FixedPcdGetPtr (PcdAndroidFastbootNvmDevicePath));
Status = gBS->LocateDevicePath (&gEfiBlockIoProtocolGuid, &BlockDevicePath, &Handle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Warning: Couldn't locate block device (status: %r)\n", Status));
return EFI_INVALID_PARAMETER;
}
Status = gBS->OpenProtocol (
Handle,
&gEfiBlockIoProtocolGuid,
(VOID **) &BlockIoProtocol,
gImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Warning: Couldn't open block device (status: %r)\n", Status));
return EFI_DEVICE_ERROR;
}
DataPtr = AllocateZeroPool (SERIAL_NUMBER_BLOCK_SIZE);
WriteBackDataCacheRange (DataPtr, SERIAL_NUMBER_BLOCK_SIZE);
Status = BlockIoProtocol->ReadBlocks (BlockIoProtocol, BlockIoProtocol->Media->MediaId,
SERIAL_NUMBER_LBA, SERIAL_NUMBER_BLOCK_SIZE,
DataPtr);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Warning: failed on reading blocks.\n"));
goto exit;
}
InvalidateDataCacheRange (DataPtr, SERIAL_NUMBER_BLOCK_SIZE);
Random = (struct RandomSerialNo *)DataPtr;
if (Random->Magic != RANDOM_MAGIC) {
VariableSize = SERIAL_NUMBER_LENGTH * sizeof (CHAR16);
Status = gRT->GetVariable (
(CHAR16 *)L"SerialNo",
&gArmGlobalVariableGuid,
NULL,
&VariableSize,
&DefaultSerialNo
);
if (Status == EFI_NOT_FOUND) {
Status = gRT->SetVariable (
(CHAR16*)L"SerialNo",
&gArmGlobalVariableGuid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
VariableSize,
DefaultSerialNo
);
}
} else {
AsciiStrToUnicodeStr (Random->SerialNo, SerialNoUnicode);
VariableSize = SERIAL_NUMBER_LENGTH * sizeof (CHAR16);
Status = gRT->GetVariable (
(CHAR16 *)L"SerialNo",
&gArmGlobalVariableGuid,
NULL,
&VariableSize,
&DataUnicode
);
if ((Status == EFI_NOT_FOUND) || StrCmp (DataUnicode, SerialNoUnicode)) {
Status = gRT->SetVariable (
(CHAR16*)L"SerialNo",
&gArmGlobalVariableGuid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
VariableSize,
SerialNoUnicode
);
}
}
exit:
FreePool (DataPtr);
return Status;
}
STATIC
VOID
EFIAPI
HiKeyInitBootDevice (
IN VOID
)
{
EFI_STATUS Status;
UINTN VariableSize;
CHAR16 DefaultBootDevice[] = L"emmc";
VariableSize = BOOT_DEVICE_LENGTH * sizeof (CHAR16);
Status = gRT->GetVariable (
(CHAR16 *)L"HiKeyBootDevice",
&gArmGlobalVariableGuid,
NULL,
&VariableSize,
&DefaultBootDevice
);
if (Status == EFI_NOT_FOUND) {
Status = gRT->SetVariable (
(CHAR16*)L"HiKeyBootDevice",
&gArmGlobalVariableGuid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
VariableSize,
DefaultBootDevice
);
}
}
EFI_STATUS
EFIAPI
HiKeyEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
HiKeyInitSerialNo ();
HiKeyInitBootDevice ();
HiKeyInitPeripherals ();
// Try to install the Flat Device Tree (FDT). This function actually installs the
// UEFI Driver Binding Protocol.
Status = HiKeyFdtInstall (ImageHandle);
if (EFI_ERROR (Status))
return Status;
Status = HiKeyBootMenuInstall ();
return Status;
}
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