Re: [Linaro-uefi] [PATCH v4 5/5] Platforms/Hisilicon/HiKey: add fastboot driver

2 Mar 2017

On 2017/3/1 23:13, Leif Lindholm wrote:
...
On Wed, Feb 15, 2017 at 10:54:59PM +0800, Haojian Zhuang wrote:
...
Support HiKey Fastboot driver for Fastboot App.
I asked a few questions on v3, which I received no replies to.
Here I asked:

Question: I notice this version deletes the SPARSE_HEADER support,
which was one of the main differences compared to VEXpress driver.
Is this something you plan to introduce in future?

It'll be appended in future. There are two reasons that I remove it
from this patch set.
1. There's some issue to download latest system.img into HiKey.
2. SPARSE_HEADER should be common case. It's better to parse it in
AndroidFastboot App instead.
...
...
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang haojian.zhuang@linaro.org

Platforms/Hisilicon/HiKey/HiKey.dec                |   1 +
 .../HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.c      | 672 +++++++++++++++++++++
 .../HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.inf    |  61 ++
 .../Hisilicon/HiKey/Include/Guid/HiKeyVariable.h   |  24 +
 4 files changed, 758 insertions(+)
 create mode 100644 Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.c
 create mode 100644 Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.inf
 create mode 100644 Platforms/Hisilicon/HiKey/Include/Guid/HiKeyVariable.h

diff --git a/Platforms/Hisilicon/HiKey/HiKey.dec b/Platforms/Hisilicon/HiKey/HiKey.dec
index 537138e..17c6484 100644
--- a/Platforms/Hisilicon/HiKey/HiKey.dec
+++ b/Platforms/Hisilicon/HiKey/HiKey.dec
@@ -30,6 +30,7 @@
[Guids.common]
   gHiKeyTokenSpaceGuid          =  { 0x91148425, 0xcdd2, 0x4830, { 0x8b, 0xd0, 0xc6, 0x1c, 0x6d, 0xea, 0x36, 0x21 } }

gHiKeyVariableGuid            =  { 0x66b8d063, 0x1daa, 0x4c60, { 0xb9, 0xf2, 0x55, 0x0d, 0x7e, 0xe1, 0x2f, 0x38 } }

[PcdsFixedAtBuild.common]
   gHiKeyTokenSpaceGuid.PcdAndroidFastbootNvmDevicePath|L""|VOID*|0x00000001
diff --git a/Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.c b/Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.c
new file mode 100644
index 0000000..2597f7a
--- /dev/null
+++ b/Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.c
@@ -0,0 +1,672 @@
+/** @file


Copyright (c) 2014, ARM Ltd. All rights reserved.<BR>
Copyright (c) 2015-2017, Linaro. 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.


+**/



+/*

Implementation of the Android Fastboot Platform protocol, to be used by the
Fastboot UEFI application, for Hisilicon HiKey platform.

+*/



+#include <Protocol/AndroidFastbootPlatform.h>
+#include <Protocol/BlockIo.h>
+#include <Protocol/DiskIo.h>
+#include <Protocol/EraseBlock.h>
+#include <Protocol/SimpleTextOut.h>



+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/PrintLib.h>
+#include <Library/TimerLib.h>



+#include <Guid/HiKeyVariable.h>



+#define FLASH_DEVICE_PATH_SIZE(DevPath) ( GetDevicePathSize (DevPath) - \

                                       sizeof (EFI_DEVICE_PATH_PROTOCOL))




+#define PARTITION_NAME_MAX_LENGTH 72/2



+#define IS_ALPHA(Char) (((Char) <= L'z' && (Char) >= L'a') || \

                   ((Char) <= L'Z' && (Char) >= L'Z'))



+#define IS_HEXCHAR(Char) (((Char) <= L'9' && (Char) >= L'0') || \

                     IS_ALPHA(Char))




+#define SERIAL_NUMBER_LENGTH                     16
+#define BOOT_DEVICE_LENGTH                       16



+#define HIKEY_ERASE_SIZE                         (16 * 1024 * 1024)
+#define HIKEY_ERASE_BLOCKS                       (HIKEY_ERASE_SIZE / EFI_PAGE_SIZE)
+#define PARTITION_TYPE_STRING                    "partition-type"
+#define PARTITION_SIZE_STRING                    "partition-size"
+// length of a 12-byte hex string
+#define PARTITION_SIZE_LENGTH                    12
+#define PARTITION_NAME_LENGTH                    36 // CHAR16
And here I asked:
Where does this limit come from? Specification?
Yes, it's from GPT spec.
...
...



+/*


struct entry_head {



unsigned char        magic[8];   // "ENTRYHDR"



unsigned char        name[8];    // "primary"/"second"



unsigned int         start_lba;



unsigned int         count_lba;



unsigned int         flag;



}







ptable:








| head (primary) | content | head (second) | content |







*/


+#define HIKEY_PTABLE_HEAD_MAGIC_LEN              8
+#define HIKEY_PTABLE_HEAD_NAME_LEN               8
+#define HIKEY_PTABLE_HEAD_SIZE                   28
+#define HIKEY_PTABLE_CONTENT_OFFSET              512




+typedef struct _FASTBOOT_PARTITION_LIST {

LIST_ENTRY  Link;
CHAR16      PartitionName[PARTITION_NAME_MAX_LENGTH];
EFI_HANDLE  PartitionHandle;
EFI_LBA     Lba;

+} FASTBOOT_PARTITION_LIST;



+STATIC LIST_ENTRY mPartitionListHead;



+/*

Helper to free the partition list

+*/
+STATIC
+VOID
+FreePartitionList (

VOID
)

+{

FASTBOOT_PARTITION_LIST *Entry;
FASTBOOT_PARTITION_LIST *NextEntry;

Entry = (FASTBOOT_PARTITION_LIST *) GetFirstNode (&mPartitionListHead);
while (!IsNull (&mPartitionListHead, &Entry->Link)) {
NextEntry = (FASTBOOT_PARTITION_LIST *) GetNextNode (&mPartitionListHead, &Entry->Link);

RemoveEntryList (&Entry->Link);
FreePool (Entry);

Entry = NextEntry;
}

+}
+/*

Read the PartitionName fields from the GPT partition entries, putting them
into an allocated array that should later be freed.

+*/
+STATIC
+EFI_STATUS
+ReadPartitionEntries (

IN  EFI_BLOCK_IO_PROTOCOL *BlockIo,
OUT EFI_PARTITION_ENTRY  **PartitionEntries
)

+{

UINTN                       EntrySize;
UINTN                       NumEntries;
UINTN                       BufferSize;
UINT32                      MediaId;
EFI_PARTITION_TABLE_HEADER *GptHeader;
EFI_STATUS                  Status;

MediaId = BlockIo->Media->MediaId;

//
// Read size of Partition entry and number of entries from GPT header
//

GptHeader = AllocatePool (BlockIo->Media->BlockSize);
if (GptHeader == NULL) {
return EFI_OUT_OF_RESOURCES;
}

Status = BlockIo->ReadBlocks (BlockIo, MediaId, 1, BlockIo->Media->BlockSize, GptHeader);
if (EFI_ERROR (Status)) {
return Status;
}

// Check there is a GPT on the media
if (GptHeader->Header.Signature != EFI_PTAB_HEADER_ID ||
 GptHeader->MyLBA != 1) {


DEBUG ((DEBUG_ERROR,
 "Fastboot platform: No GPT on flash. "


 "Fastboot on HiKey does not support MBR.\n"


 ));


return EFI_DEVICE_ERROR;
}

EntrySize = GptHeader->SizeOfPartitionEntry;
NumEntries = GptHeader->NumberOfPartitionEntries;

FreePool (GptHeader);

ASSERT (EntrySize != 0);
ASSERT (NumEntries != 0);

BufferSize = ALIGN_VALUE (EntrySize * NumEntries, BlockIo->Media->BlockSize);
*PartitionEntries = AllocatePool (BufferSize);
if (PartitionEntries == NULL) {
return EFI_OUT_OF_RESOURCES;
}

Status = BlockIo->ReadBlocks (BlockIo, MediaId, 2, BufferSize, (VOID *) *PartitionEntries);
if (EFI_ERROR (Status)) {
FreePool (PartitionEntries);
return Status;
}

return Status;

+}




+STATIC
+EFI_STATUS
+CreateGptPartitionEntry (

IN EFI_HANDLE                      *AllHandles,
IN UINTN                            LoopIndex,
IN HARDDRIVE_DEVICE_PATH           *PartitionNode,
IN EFI_PARTITION_ENTRY             *PartitionEntries
)

+{

FASTBOOT_PARTITION_LIST            *Entry;

// Create entry
Entry = AllocatePool (sizeof (FASTBOOT_PARTITION_LIST));
if (Entry == NULL) {
return EFI_OUT_OF_RESOURCES;
}

// Copy handle and partition name
Entry->PartitionHandle = AllHandles[LoopIndex];
StrnCpy (
Entry->PartitionName,
PartitionEntries[PartitionNode->PartitionNumber - 1].PartitionName, // Partition numbers start from 1.
PARTITION_NAME_MAX_LENGTH
);
Entry->Lba = PartitionEntries[PartitionNode->PartitionNumber - 1].StartingLBA;
InsertTailList (&mPartitionListHead, &Entry->Link);

// Print a debug message if the partition label is empty or looks like
// garbage.
if (!IS_ALPHA (Entry->PartitionName[0])) {
DEBUG ((DEBUG_WARN,
 "Warning: Partition %d doesn't seem to have a GPT partition label. "


 "You won't be able to flash it with Fastboot.\n",


 PartitionNode->PartitionNumber


 ));


}
return EFI_SUCCESS;

+}



+STATIC
+EFI_STATUS
+CreatePartitionEntry (

IN  EFI_HANDLE                     *AllHandles,
IN  UINTN                           LoopIndex,
IN  EFI_DEVICE_PATH_PROTOCOL       *FlashDevicePath,
IN  EFI_DEVICE_PATH_PROTOCOL       *DevicePath,
IN  EFI_PARTITION_ENTRY            *PartitionEntries
)

+{

EFI_DEVICE_PATH_PROTOCOL           *NextNode;
FASTBOOT_PARTITION_LIST            *Entry;
HARDDRIVE_DEVICE_PATH              *PartitionNode;

// Fill out if it isn't a sub-device of the flash device
if (CompareMem (DevicePath, FlashDevicePath, FLASH_DEVICE_PATH_SIZE (FlashDevicePath))) {
return EFI_SUCCESS;
}
// Device path starts with path of flash device. Check it isn't the flash
// device itself.
NextNode = NextDevicePathNode (DevicePath);
if (IsDevicePathEndType (NextNode)) {
// Create entry
Entry = AllocatePool (sizeof (FASTBOOT_PARTITION_LIST));
if (Entry == NULL) {
 return EFI_OUT_OF_RESOURCES;


}

// Copy handle and partition name
Entry->PartitionHandle = AllHandles[LoopIndex];
StrCpy (Entry->PartitionName, L"ptable");
InsertTailList (&mPartitionListHead, &Entry->Link);
return EFI_SUCCESS;
}

// Assert that this device path node represents a partition.
ASSERT (NextNode->Type == MEDIA_DEVICE_PATH &&
     NextNode->SubType == MEDIA_HARDDRIVE_DP);



PartitionNode = (HARDDRIVE_DEVICE_PATH *) NextNode;

// Assert that the partition type is GPT. ReadPartitionEntries checks for
// presence of a GPT, so we should never find MBR partitions.
// ("MBRType" is a misnomer - this field is actually called "Partition
//  Format")
ASSERT (PartitionNode->MBRType == MBR_TYPE_EFI_PARTITION_TABLE_HEADER);

// The firmware may install a handle for "partition 0", representing the
// whole device. Ignore it.
if (PartitionNode->PartitionNumber == 0) {
return EFI_SUCCESS;
}
return CreateGptPartitionEntry (AllHandles, LoopIndex, PartitionNode, PartitionEntries);

+}



+/*

Initialise: Open the Android NVM device and find the partitions on it. Save them in
a list along with the "PartitionName" fields for their GPT entries.
We will use these partition names as the key in
HiKeyFastbootPlatformFlashPartition.

+*/
+STATIC
+EFI_STATUS
+HiKeyFastbootPlatformInit (

VOID
)

+{

EFI_STATUS                          Status;
EFI_DEVICE_PATH_PROTOCOL           *FlashDevicePath;
EFI_DEVICE_PATH_PROTOCOL           *FlashDevicePathDup;
EFI_DEVICE_PATH_PROTOCOL           *DevicePath;
UINTN                               NumHandles;
EFI_HANDLE                         *AllHandles;
UINTN                               LoopIndex;
EFI_HANDLE                          FlashHandle;
EFI_BLOCK_IO_PROTOCOL              *FlashBlockIo;
EFI_PARTITION_ENTRY                *PartitionEntries;

InitializeListHead (&mPartitionListHead);

//
// Get EFI_HANDLES for all the partitions on the block devices pointed to by
// PcdFastbootFlashDevicePath, also saving their GPT partition labels.
// There's no way to find all of a device's children, so we get every handle
// in the system supporting EFI_BLOCK_IO_PROTOCOL and then filter out ones
// that don't represent partitions on the flash device.
//

FlashDevicePath = ConvertTextToDevicePath ((CHAR16*)FixedPcdGetPtr (PcdAndroidFastbootNvmDevicePath));

//
// Open the Disk IO protocol on the flash device - this will be used to read
// partition names out of the GPT entries
//
// Create another device path pointer because LocateDevicePath will modify it.
FlashDevicePathDup = FlashDevicePath;
Status = gBS->LocateDevicePath (&gEfiBlockIoProtocolGuid, &FlashDevicePathDup, &FlashHandle);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Warning: Couldn't locate Android NVM device (status: %r)\n", Status));
// Failing to locate partitions should not prevent to do other Android FastBoot actions
return EFI_SUCCESS;
}

Status = gBS->OpenProtocol (
             FlashHandle,


             &gEfiBlockIoProtocolGuid,


             (VOID **) &FlashBlockIo,


             gImageHandle,


             NULL,


             EFI_OPEN_PROTOCOL_GET_PROTOCOL


             );


if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Fastboot platform: Couldn't open Android NVM device (status: %r)\n", Status));
return EFI_DEVICE_ERROR;
}

// Read the GPT partition entry array into memory so we can get the partition names
Status = ReadPartitionEntries (FlashBlockIo, &PartitionEntries);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Warning: Failed to read partitions from Android NVM device (status: %r)\n", Status));
// Failing to locate partitions should not prevent to do other Android FastBoot actions
return EFI_SUCCESS;
}

// Get every Block IO protocol instance installed in the system
Status = gBS->LocateHandleBuffer (
             ByProtocol,


             &gEfiBlockIoProtocolGuid,


             NULL,


             &NumHandles,


             &AllHandles


             );


ASSERT_EFI_ERROR (Status);

// Filter out handles that aren't children of the flash device
for (LoopIndex = 0; LoopIndex < NumHandles; LoopIndex++) {
// Get the device path for the handle
Status = gBS->OpenProtocol (
               AllHandles[LoopIndex],


               &gEfiDevicePathProtocolGuid,


               (VOID **) &DevicePath,


               gImageHandle,


               NULL,


               EFI_OPEN_PROTOCOL_GET_PROTOCOL


               );


ASSERT_EFI_ERROR (Status);

Status = CreatePartitionEntry (
          AllHandles,


          LoopIndex,


          FlashDevicePath,


          DevicePath,


          PartitionEntries


          );


if (EFI_ERROR (Status)) {
 FreePartitionList ();


 goto Exit;


}
}


+Exit:

FreePool (PartitionEntries);
FreePool (FlashDevicePath);
FreePool (AllHandles);
return Status;


+}



+STATIC
+VOID
+HiKeyFastbootPlatformUnInit (

VOID
)

+{

FreePartitionList ();

+}



+STATIC
+VOID *
+WritePartition (

IN VOID                    *Image,
IN UINTN                   Size,
IN EFI_DISK_IO_PROTOCOL    *DiskIo,
IN EFI_BLOCK_IO_PROTOCOL   *BlockIo,
IN CHAR8                   *Name
)

+{

UINT32                     EntrySize, EntryOffset;
EFI_STATUS                 Status;
VOID                       *Buffer;

Buffer = Image;
// not a string with terminated '\0'
if (AsciiStrnCmp (Buffer, "ENTRYHDR", HIKEY_PTABLE_HEAD_MAGIC_LEN) != 0) {
DEBUG ((DEBUG_ERROR, "unknown ptable image\n"));
return NULL;
}
Buffer += HIKEY_PTABLE_HEAD_MAGIC_LEN;
// not a string with terminated '\0'
if (AsciiStrnCmp (Buffer, Name, HIKEY_PTABLE_HEAD_NAME_LEN) != 0) {
DEBUG ((DEBUG_ERROR, "unknown ptable image\n"));
return NULL;
}
Buffer += HIKEY_PTABLE_HEAD_NAME_LEN;
EntryOffset = *(UINT32 *)Buffer * BlockIo->Media->BlockSize;
Buffer += sizeof (UINT32);
EntrySize = *(UINT32 *)Buffer * BlockIo->Media->BlockSize;
if ((EntrySize + HIKEY_PTABLE_CONTENT_OFFSET) > Size) {
DEBUG ((DEBUG_ERROR, "Entry size doesn't match\n"));
return NULL;
}
Buffer = Image + HIKEY_PTABLE_CONTENT_OFFSET;
Status = DiskIo->WriteDisk (DiskIo, BlockIo->Media->MediaId, EntryOffset, EntrySize, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Can't flush partition table\n"));
return NULL;
}
Buffer += EntrySize;
return Buffer;

+}



+STATIC
+EFI_STATUS
+HiKeyFastbootPlatformFlashPartition (

IN CHAR8  *PartitionName,
IN UINTN   Size,
IN VOID   *Image
)

+{

EFI_STATUS               Status;
EFI_BLOCK_IO_PROTOCOL   *BlockIo;
EFI_DISK_IO_PROTOCOL    *DiskIo;
UINT32                   MediaId;
UINTN                    PartitionSize;
FASTBOOT_PARTITION_LIST *Entry;
CHAR16                   PartitionNameUnicode[PARTITION_NAME_LENGTH];
BOOLEAN                  PartitionFound;
VOID                    *Buffer;


AsciiStrToUnicodeStr (PartitionName, PartitionNameUnicode);

PartitionFound = FALSE;
Entry = (FASTBOOT_PARTITION_LIST *) GetFirstNode (&(mPartitionListHead));
while (!IsNull (&mPartitionListHead, &Entry->Link)) {
// Search the partition list for the partition named by PartitionName
if (StrCmp (Entry->PartitionName, PartitionNameUnicode) == 0) {
 PartitionFound = TRUE;


 break;


}

Entry = (FASTBOOT_PARTITION_LIST *) GetNextNode (&mPartitionListHead, &(Entry)->Link);
}
if (!PartitionFound) {
return EFI_NOT_FOUND;
}

Status = gBS->OpenProtocol (
             Entry->PartitionHandle,


             &gEfiBlockIoProtocolGuid,


             (VOID **) &BlockIo,


             gImageHandle,


             NULL,


             EFI_OPEN_PROTOCOL_GET_PROTOCOL


             );


if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Fastboot platform: couldn't open Block IO for flash: %r\n", Status));
return EFI_NOT_FOUND;
}

// Check image will fit on device
// LastBlock counts from 0
PartitionSize = (BlockIo->Media->LastBlock + 1) * BlockIo->Media->BlockSize;
if (PartitionSize < Size) {
DEBUG ((DEBUG_ERROR, "Partition not big enough.\n"));
DEBUG ((DEBUG_ERROR, "Partition Size:\t%ld\nImage Size:\t%ld\n", PartitionSize, Size));

return EFI_VOLUME_FULL;
}

MediaId = BlockIo->Media->MediaId;

Status = gBS->OpenProtocol (
             Entry->PartitionHandle,


             &gEfiDiskIoProtocolGuid,


             (VOID **) &DiskIo,


             gImageHandle,


             NULL,


             EFI_OPEN_PROTOCOL_GET_PROTOCOL


             );


ASSERT_EFI_ERROR (Status);

if (AsciiStrCmp (PartitionName, "ptable") == 0) {
Buffer = WritePartition (Image, Size, DiskIo, BlockIo, "primary");
if (Buffer == NULL) {
 return EFI_DEVICE_ERROR;


}
if (Size >= (2 * PartitionSize)) {
 Buffer = WritePartition (Buffer, Size, DiskIo, BlockIo, "second");


 if (Buffer == NULL) {


   return EFI_DEVICE_ERROR;


 }


}

Yes, this bit looks a lot better now.
...

} else {
Status = DiskIo->WriteDisk (DiskIo, MediaId, 0, Size, Image);
}

BlockIo->FlushBlocks(BlockIo);
// wait DMA finished
MicroSecondDelay (50000);

return Status;

+}



+STATIC
+EFI_STATUS
+HiKeyFastbootPlatformErasePartition (

IN CHAR8 *PartitionName
)

+{

return EFI_SUCCESS;

+}



+STATIC
+EFI_STATUS
+HiKeyFastbootPlatformGetVar (

IN  CHAR8   *Name,
OUT CHAR8   *Value
)

+{

EFI_STATUS               Status;
EFI_BLOCK_IO_PROTOCOL   *BlockIo;
UINT64                   PartitionSize;
FASTBOOT_PARTITION_LIST *Entry;
CHAR16                   PartitionNameUnicode[PARTITION_NAME_LENGTH];
BOOLEAN                  PartitionFound;
CHAR16                   DataUnicode[SERIAL_NUMBER_LENGTH + 1]; // terminated '\0'
UINTN                    VariableSize;
CHAR8                    PartTypeStr[] = "partition-type";
CHAR8                    PartSizeStr[] = "partition-size";

if (!AsciiStrCmp (Name, "max-download-size")) {
AsciiStrCpy (Value, FixedPcdGetPtr (PcdArmFastbootFlashLimit));
} else if (!AsciiStrCmp (Name, "product")) {
AsciiStrCpy (Value, FixedPcdGetPtr (PcdFirmwareVendor));
} else if (!AsciiStrCmp (Name, "serialno")) {
VariableSize = (SERIAL_NUMBER_LENGTH + 1) * sizeof (CHAR16);
Status = gRT->GetVariable (
               (CHAR16 *)L"SerialNo",


               &gHiKeyVariableGuid,


               NULL,


               &VariableSize,


               &DataUnicode


               );


if (EFI_ERROR (Status)) {
 *Value = '\0';


 return EFI_NOT_FOUND;


}
DataUnicode[SERIAL_NUMBER_LENGTH * sizeof(CHAR16)] = '\0';
UnicodeStrToAsciiStr (DataUnicode, Value);
} else if (!AsciiStrnCmp (Name, PartSizeStr, AsciiStrLen (PartSizeStr))) {
// skip ':', then copy
AsciiStrToUnicodeStr ((Name + AsciiStrLen (PartSizeStr) + 1), PartitionNameUnicode);
PartitionFound = FALSE;
Entry = (FASTBOOT_PARTITION_LIST *) GetFirstNode (&(mPartitionListHead));
while (!IsNull (&mPartitionListHead, &Entry->Link)) {
 // Search the partition list for the partition named by PartitionName


 if (StrCmp (Entry->PartitionName, PartitionNameUnicode) == 0) {


   PartitionFound = TRUE;


   break;


 }



Entry = (FASTBOOT_PARTITION_LIST *) GetNextNode (&mPartitionListHead, &(Entry)->Link);


}
if (!PartitionFound) {
 *Value = '\0';


 return EFI_NOT_FOUND;


}

Status = gBS->OpenProtocol (
               Entry->PartitionHandle,


               &gEfiBlockIoProtocolGuid,


               (VOID **) &BlockIo,


               gImageHandle,


               NULL,


               EFI_OPEN_PROTOCOL_GET_PROTOCOL


               );


if (EFI_ERROR (Status)) {
 DEBUG ((DEBUG_ERROR, "Fastboot platform: couldn't open Block IO for flash: %r\n", Status));


 *Value = '\0';


 return EFI_NOT_FOUND;


}

// LastBlock counts from 0
PartitionSize = (BlockIo->Media->LastBlock + 1) * BlockIo->Media->BlockSize;
DEBUG ((DEBUG_INFO, "Fastboot platform: check for partition-size:%a 0x%llx\n", Name, PartitionSize));
AsciiSPrint (Value, PARTITION_SIZE_LENGTH, "0x%llx", PartitionSize);
} else if ( !AsciiStrnCmp (Name, PartTypeStr, AsciiStrLen (PartTypeStr))) {
DEBUG ((DEBUG_INFO, "Fastboot platform: check for partition-type:%a\n", Name + AsciiStrLen (PartTypeStr)));
// skip ':'
if (!AsciiStrCmp ((Name + AsciiStrLen (PartTypeStr) + 1) , "system") ||
   !AsciiStrCmp ((Name + AsciiStrLen (PartTypeStr) + 1) , "userdata") ||


   !AsciiStrCmp ((Name + AsciiStrLen (PartTypeStr) + 1) , "cache")) {


 AsciiStrCpy (Value, "ext4");


} else {
 AsciiStrCpy (Value, "raw");


}
} else {
*Value = '\0';
}
return EFI_SUCCESS;

+}



+STATIC
+EFI_STATUS
+HiKeyFastbootPlatformOemCommand (

IN  CHAR8   *Command
)

+{

if (AsciiStrCmp (Command, "Demonstrate") == 0) {
DEBUG ((DEBUG_ERROR, "ARM OEM Fastboot command 'Demonstrate' received.\n"));
return EFI_SUCCESS;
} else {
DEBUG ((DEBUG_ERROR,
 "HiKey: Unrecognised Fastboot OEM command: %s\n",


 Command


 ));


return EFI_NOT_FOUND;
}

+}



+FASTBOOT_PLATFORM_PROTOCOL mPlatformProtocol = {

HiKeyFastbootPlatformInit,
HiKeyFastbootPlatformUnInit,
HiKeyFastbootPlatformFlashPartition,
HiKeyFastbootPlatformErasePartition,
HiKeyFastbootPlatformGetVar,
HiKeyFastbootPlatformOemCommand

+};



+EFI_STATUS
+EFIAPI
+HiKeyFastbootPlatformEntryPoint (

IN EFI_HANDLE                            ImageHandle,
IN EFI_SYSTEM_TABLE                      *SystemTable
)

+{

return gBS->InstallProtocolInterface (
           &ImageHandle,


           &gAndroidFastbootPlatformProtocolGuid,


           EFI_NATIVE_INTERFACE,


           &mPlatformProtocol


           );



+}
diff --git a/Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.inf b/Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.inf
new file mode 100644
index 0000000..353c6c3
--- /dev/null
+++ b/Platforms/Hisilicon/HiKey/HiKeyFastbootDxe/HiKeyFastbootDxe.inf
@@ -0,0 +1,61 @@
+#/** @file
+#
+#  Copyright (c) 2014, ARM Ltd. All rights reserved.<BR>
+#  Copyright (c) 2015-2017, Linaro. 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.
+#
+#
+#**/



+[Defines]

INF_VERSION                    = 0x00010019
BASE_NAME                      = HiKeyFastbootDxe
FILE_GUID                      = 8e335c38-c4e1-494e-8011-37a858d9763d
MODULE_TYPE                    = UEFI_DRIVER
VERSION_STRING                 = 1.0
ENTRY_POINT                    = HiKeyFastbootPlatformEntryPoint


+[Sources.common]

HiKeyFastbootDxe.c


+[LibraryClasses]

BaseLib
BaseMemoryLib
DebugLib
DevicePathLib
MemoryAllocationLib
PcdLib
UefiBootServicesTableLib
UefiRuntimeServicesTableLib
UefiDriverEntryPoint
TimerLib

Comment unaddressed from v3:
Please insert TimerLib alphabetically.
OK
...
...



+[Protocols]

gAndroidFastbootPlatformProtocolGuid
gEfiBlockIoProtocolGuid
gEfiDiskIoProtocolGuid
gEfiSimpleTextOutProtocolGuid
gEfiEraseBlockProtocolGuid

Comment unaddressed from v3:
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OK
...
...



+[Packages]

EmbeddedPkg/EmbeddedPkg.dec
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
ArmPlatformPkg/ArmPlatformPkg.dec
ArmPlatformPkg/ArmVExpressPkg/ArmVExpressPkg.dec
ArmPkg/ArmPkg.dec
OpenPlatformPkg/Platforms/Hisilicon/HiKey/HiKey.dec

Comment unaddressed from v3:
Please sort alphabetically.
...



+[Guids]

gHiKeyVariableGuid


+[Pcd]

gArmPlatformTokenSpaceGuid.PcdFirmwareVendor
gHiKeyTokenSpaceGuid.PcdAndroidFastbootNvmDevicePath
gHiKeyTokenSpaceGuid.PcdArmFastbootFlashLimit

diff --git a/Platforms/Hisilicon/HiKey/Include/Guid/HiKeyVariable.h b/Platforms/Hisilicon/HiKey/Include/Guid/HiKeyVariable.h
new file mode 100644
index 0000000..56d5a0e
--- /dev/null
+++ b/Platforms/Hisilicon/HiKey/Include/Guid/HiKeyVariable.h
@@ -0,0 +1,24 @@
+/** @file
+*
+*  Copyright (c) 2013-2014, ARM Limited. All rights reserved.
+*  Copyright (c) 2015-2017, Linaro. 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.
+*
+**/



+#ifndef __HIKEY_VARIABLE_H__
+#define __HIKEY_VARIABLE_H__



+#define HIKEY_VARIABLE_GUID \

{ 0x66b8d063, 0x1daa, 0x4c60, { 0xb9, 0xf2, 0x55, 0x0d, 0x7e, 0xe1, 0x2f, 0x38 } }


+extern EFI_GUID gHiKeyVariableGuid;



+#endif /* __HIKEY_VARIABLE_H__ */
2.7.4

    

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Re: [Linaro-uefi] [PATCH v4 5/5] Platforms/Hisilicon/HiKey: add fastboot driver

And here I asked:

Where does this limit come from? Specification?

Comment unaddressed from v3:

Please insert TimerLib alphabetically.

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Comment unaddressed from v3:

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+#endif /* __HIKEY_VARIABLE_H__ */