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Extensible Firmware Interface Specification
I-4 12/01/02 Version 1.10
Returns:
EFI_SUCCESS - Decompression is successfull
EFI_INVALID_PARAMETER - The source data is corrupted
--*/
{
UINT32 Index;
UINT16 Count;
UINT32 CompSize;
UINT32 OrigSize;
UINT8 *Dst1;
EFI_STATUS Status;
SCRATCH_DATA *Sd;
UINT8 *Src;
UINT8 *Dst;
Status = EFI_SUCCESS;
Src = Source;
Dst = Destination;
Dst1 = Dst;
if (ScratchSize < sizeof (SCRATCH_DATA)) {
return EFI_INVALID_PARAMETER;
}
Sd = (SCRATCH_DATA *)Scratch;
if (SrcSize < 8) {
return EFI_INVALID_PARAMETER;
}
CompSize = Src[0] + (Src[1] << 8) + (Src[2] << 16) + (Src[3] << 24);
OrigSize = Src[4] + (Src[5] << 8) + (Src[6] << 16) + (Src[7] << 24);
if (SrcSize < CompSize + 8) {
return EFI_INVALID_PARAMETER;
}
Src = Src + 8;
for (Index = 0; Index < sizeof(SCRATCH_DATA); Index++) {
((UINT8*)Sd)[Index] = 0;
}
Sd->mBytesRemain = (UINT16)(-1);
Sd->mSrcBase = Src;
Sd->mDstBase = Dst;
Sd->mCompSize = CompSize;
Sd->mOrigSize = OrigSize;
//
// Fill the first two bytes
//
FillBuf(Sd, BITBUFSIZ);
while (Sd->mOrigSize > 0) {
Count = (UINT16) (WNDSIZ < Sd->mOrigSize? WNDSIZ: Sd->mOrigSize);
Decode (Sd, Count);