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/*
# Copyright (c) 2014-2018, Linaro Limited. 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 <RdkBootManagerLib.h>
/* See sparse_format.h in AOSP */
#define SPARSE_HEADER_MAGIC 0xed26ff3a
#define CHUNK_TYPE_RAW 0xCAC1
#define CHUNK_TYPE_FILL 0xCAC2
#define CHUNK_TYPE_DONT_CARE 0xCAC3
#define CHUNK_TYPE_CRC32 0xCAC4
#define PARTITION_NAME_MAX_LENGTH 72/2
#define FLASH_DEVICE_PATH_SIZE(DevPath) ( GetDevicePathSize (DevPath) - \
sizeof (EFI_DEVICE_PATH_PROTOCOL))
#define IS_ALPHA(Char) (((Char) <= L'z' && (Char) >= L'a') || \
((Char) <= L'Z' && (Char) >= L'Z'))
typedef struct _DISKIO_PARTITION_LIST {
LIST_ENTRY Link;
CHAR16 PartitionName[PARTITION_NAME_MAX_LENGTH];
EFI_HANDLE PartitionHandle;
} DISKIO_PARTITION_LIST;
typedef struct _SPARSE_HEADER {
UINT32 Magic;
UINT16 MajorVersion;
UINT16 MinorVersion;
UINT16 FileHeaderSize;
UINT16 ChunkHeaderSize;
UINT32 BlockSize;
UINT32 TotalBlocks;
UINT32 TotalChunks;
UINT32 ImageChecksum;
} SPARSE_HEADER;
typedef struct _CHUNK_HEADER {
UINT16 ChunkType;
UINT16 Reserved1;
UINT32 ChunkSize;
UINT32 TotalSize;
} CHUNK_HEADER;
STATIC LIST_ENTRY mPartitionListHead;
STATIC EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *mTextOut;
/*
* Helper to free the partition list
*/
STATIC
VOID
FreePartitionList (
VOID
)
{
DISKIO_PARTITION_LIST *Entry;
DISKIO_PARTITION_LIST *NextEntry;
Entry = (DISKIO_PARTITION_LIST *)GetFirstNode (&mPartitionListHead);
while (!IsNull (&mPartitionListHead, &Entry->Link)) {
NextEntry = (DISKIO_PARTITION_LIST *) GetNextNode (\
&mPartitionListHead, &Entry->Link);
RemoveEntryList (&Entry->Link);
FreePool (Entry);
Entry = NextEntry;
}
}
/*
* lists the available Block Io and adds handle of given dev path
*/
STATIC
EFI_STATUS
ListBlockIos (
IN CHAR16 *PartitionName
)
{
EFI_STATUS Status;
EFI_HANDLE *AllHandles;
EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *DevPathToText;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
UINTN LoopIndex;
UINTN NumHandles;
UINT16 *DeviceFullPath;
DISKIO_PARTITION_LIST *Entry;
InitializeListHead (&mPartitionListHead);
Status = gBS->LocateProtocol (
&gEfiDevicePathToTextProtocolGuid,
NULL,
(VOID **) &DevPathToText
);
ASSERT_EFI_ERROR (Status);
// Get every Block IO protocol instance installed in the system
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiBlockIoProtocolGuid,
NULL,
&NumHandles,
&AllHandles
);
ASSERT_EFI_ERROR (Status);
DEBUG ((DEBUG_INFO, "Block IO: %d handles \n", NumHandles));
// Get HTTP driver handle from AllHandles
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
);
DeviceFullPath = DevPathToText->ConvertDevicePathToText (
DevicePath,
FALSE,
TRUE
);
DEBUG((DEBUG_INFO,"Handle[%d] is %p, fullpath %s\n", \
LoopIndex, AllHandles[LoopIndex], DeviceFullPath));
if (StrCmp (PartitionName, DeviceFullPath) == 0) {
DEBUG((DEBUG_INFO, "rootfs partition path matched\n"));
//
// Add the partition handle to the list
//
// Create entry
Entry = AllocatePool (sizeof (DISKIO_PARTITION_LIST));
if (Entry == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
// Copy handle and partition name
Entry->PartitionHandle = AllHandles[LoopIndex];
StrnCpy (
Entry->PartitionName,
PartitionName,
PARTITION_NAME_MAX_LENGTH
);
InsertTailList (&mPartitionListHead, &Entry->Link);
break;
}
}
FreePool (AllHandles);
ASSERT (LoopIndex < NumHandles);
Exit:
return Status;
}
STATIC
EFI_STATUS
OpenPartition (
IN CHAR8 *PartitionName,
IN VOID *Image,
IN UINTN Size,
OUT EFI_BLOCK_IO_PROTOCOL **BlockIo,
OUT EFI_DISK_IO_PROTOCOL **DiskIo
)
{
EFI_STATUS Status;
UINTN PartitionSize;
DISKIO_PARTITION_LIST *Entry;
SPARSE_HEADER *SparseHeader;
UINT16 UnicodePartitionName[100];
AsciiStrToUnicodeStr ( PartitionName, UnicodePartitionName);
DEBUG((DEBUG_INFO, "Unicode partition name %s\n", UnicodePartitionName));
Status = ListBlockIos (UnicodePartitionName);
ASSERT_EFI_ERROR (Status);
Entry = (DISKIO_PARTITION_LIST *)GetFirstNode (&(mPartitionListHead));
ASSERT (Entry != NULL);
Status = gBS->OpenProtocol (
Entry->PartitionHandle,
&gEfiBlockIoProtocolGuid,
(VOID **) BlockIo,
gImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Unable to open Block IO protocol: %r\n", Status));
Status = EFI_NOT_FOUND;
goto Exit;
}
SparseHeader = (SPARSE_HEADER *)Image;
if (SparseHeader->Magic == SPARSE_HEADER_MAGIC) {
DEBUG ((DEBUG_INFO, \
"Sparse Magic: 0x%x Major: %d Minor: %d fhs: %d chs: %d bs: %d tbs: %d tcs: %d checksum: %d \n", \
SparseHeader->Magic, SparseHeader->MajorVersion, \
SparseHeader->MinorVersion, SparseHeader->FileHeaderSize, \
SparseHeader->ChunkHeaderSize, SparseHeader->BlockSize, \
SparseHeader->TotalBlocks, \
SparseHeader->TotalChunks, SparseHeader->ImageChecksum));
if (SparseHeader->MajorVersion != 1) {
DEBUG ((DEBUG_ERROR, "Sparse image version %d.%d not supported.\n",
SparseHeader->MajorVersion, SparseHeader->MinorVersion));
Status = EFI_INVALID_PARAMETER;
goto Exit;
}
Size = SparseHeader->BlockSize * SparseHeader->TotalBlocks;
}
// Check image will fit on device
PartitionSize = (BlockIo[0]->Media->LastBlock + 1) * BlockIo[0]->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));
Status = EFI_VOLUME_FULL;
goto Exit;
}
Status = gBS->OpenProtocol (
Entry->PartitionHandle,
&gEfiDiskIoProtocolGuid,
(VOID **) DiskIo,
gImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
Exit:
FreePartitionList ();
return Status;
}
EFI_STATUS
PartitionRead (
IN CHAR8 *PartitionName,
IN VOID *Image,
IN UINTN Size
)
{
EFI_STATUS Status;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
EFI_DISK_IO_PROTOCOL *DiskIo;
UINT32 MediaId;
Status = OpenPartition (PartitionName, Image, Size, &BlockIo, &DiskIo);
if (EFI_ERROR (Status)) {
goto Exit;
}
MediaId = BlockIo->Media->MediaId;
Status = DiskIo->ReadDisk (DiskIo, MediaId, 0, Size, Image);
if (EFI_ERROR (Status)) {
goto Exit;
}
BlockIo->FlushBlocks(BlockIo);
Exit:
return Status;
}
EFI_STATUS
PartitionWrite (
IN CHAR8 *PartitionName,
IN VOID *Image,
IN UINTN Size
)
{
EFI_STATUS Status;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
EFI_DISK_IO_PROTOCOL *DiskIo;
UINT32 MediaId;
SPARSE_HEADER *SparseHeader;
CHUNK_HEADER *ChunkHeader;
UINT32 Chunk;
UINTN Offset;
Status = OpenPartition (PartitionName, Image, Size, &BlockIo, &DiskIo);
if (EFI_ERROR (Status)) {
goto Exit;
}
Offset = 0;
MediaId = BlockIo->Media->MediaId;
SparseHeader = (SPARSE_HEADER *)Image;
if (SparseHeader->Magic == SPARSE_HEADER_MAGIC) {
CHAR16 OutputString[64];
UINTN ChunkPrintDensity =
SparseHeader->TotalChunks > 1600 ? SparseHeader->TotalChunks / 200 : 32;
Image += SparseHeader->FileHeaderSize;
for (Chunk = 0; Chunk < SparseHeader->TotalChunks; Chunk++) {
UINTN WriteSize;
ChunkHeader = (CHUNK_HEADER *)Image;
// Show progress. Don't do it for every packet as outputting text
// might be time consuming. ChunkPrintDensity is calculated to
// provide an update every half percent change for large
// downloads.
if (Chunk % ChunkPrintDensity == 0) {
UnicodeSPrint(OutputString, sizeof(OutputString),
L"\r%5d / %5d chunks written (%d%%)", Chunk,
SparseHeader->TotalChunks,
(Chunk * 100) / SparseHeader->TotalChunks);
mTextOut->OutputString(mTextOut, OutputString);
}
DEBUG ((DEBUG_INFO, "Chunk #%d - Type: 0x%x Size: %d TotalSize: %d Offset %d\n",
(Chunk+1), ChunkHeader->ChunkType, ChunkHeader->ChunkSize,
ChunkHeader->TotalSize, Offset));
Image += sizeof(CHUNK_HEADER);
WriteSize = (SparseHeader->BlockSize) * ChunkHeader->ChunkSize;
switch (ChunkHeader->ChunkType) {
case CHUNK_TYPE_RAW:
DEBUG ((DEBUG_INFO, "Writing %d at Offset %d\n", WriteSize, Offset));
Status = DiskIo->WriteDisk (DiskIo, MediaId, Offset, WriteSize, Image);
if (EFI_ERROR (Status)) {
goto Exit;
}
Image += WriteSize;
break;
case CHUNK_TYPE_DONT_CARE:
break;
case CHUNK_TYPE_CRC32:
break;
default:
DEBUG ((DEBUG_ERROR, "Unknown Chunk Type: 0x%x", ChunkHeader->ChunkType));
Status = EFI_PROTOCOL_ERROR;
goto Exit;
}
Offset += WriteSize;
}
UnicodeSPrint (OutputString, sizeof (OutputString),
L"\r%5d / %5d chunks written (100%%)\r\n",
SparseHeader->TotalChunks, SparseHeader->TotalChunks);
mTextOut->OutputString(mTextOut, OutputString);
} else {
Status = DiskIo->WriteDisk (DiskIo, MediaId, 0, Size, Image);
if (EFI_ERROR (Status)) {
goto Exit;
}
}
BlockIo->FlushBlocks (BlockIo);
Exit:
return Status;
}
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