temporary, hackish, etc, etc.. lzma support for the arm zImage loader

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16284 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 911 insertions, 0 deletions

diff --git a/target/linux/generic-2.6/patches-2.6.30/960-arm_lzma_loader.patch b/target/linux/generic-2.6/patches-2.6.30/960-arm_lzma_loader.patch
new file mode 100644
index 000000000..7995b5e51
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.30/960-arm_lzma_loader.patch
@@ -0,0 +1,911 @@
+--- /dev/null
++++ b/arch/arm/boot/compressed/LzmaDecode.c
+@@ -0,0 +1,590 @@
++/*
++  LzmaDecode.c
++  LZMA Decoder (optimized for Speed version)
++  
++  LZMA SDK 4.22 Copyright (c) 1999-2005 Igor Pavlov (2005-06-10)
++  http://www.7-zip.org/
++
++  LZMA SDK is licensed under two licenses:
++  1) GNU Lesser General Public License (GNU LGPL)
++  2) Common Public License (CPL)
++  It means that you can select one of these two licenses and 
++  follow rules of that license.
++
++  SPECIAL EXCEPTION:
++  Igor Pavlov, as the author of this Code, expressly permits you to 
++  statically or dynamically link your Code (or bind by name) to the 
++  interfaces of this file without subjecting your linked Code to the 
++  terms of the CPL or GNU LGPL. Any modifications or additions 
++  to this file, however, are subject to the LGPL or CPL terms.
++*/
++
++#include "LzmaDecode.h"
++
++#ifndef Byte
++#define Byte unsigned char
++#endif
++
++#define kNumTopBits 24
++#define kTopValue ((UInt32)1 << kNumTopBits)
++
++#define kNumBitModelTotalBits 11
++#define kBitModelTotal (1 << kNumBitModelTotalBits)
++#define kNumMoveBits 5
++
++#define RC_READ_BYTE (*Buffer++)
++
++#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \
++  { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }}
++
++#ifdef _LZMA_IN_CB
++
++#define RC_TEST { if (Buffer == BufferLim) \
++  { SizeT size; int result = InCallback->Read(InCallback, &Buffer, &size); if (result != LZMA_RESULT_OK) return result; \
++  BufferLim = Buffer + size; if (size == 0) return LZMA_RESULT_DATA_ERROR; }}
++
++#define RC_INIT Buffer = BufferLim = 0; RC_INIT2
++
++#else
++
++#define RC_TEST { if (Buffer == BufferLim) return LZMA_RESULT_DATA_ERROR; }
++
++#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2
++ 
++#endif
++
++#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; }
++
++#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound)
++#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits;
++#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits;
++
++#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \
++  { UpdateBit0(p); mi <<= 1; A0; } else \
++  { UpdateBit1(p); mi = (mi + mi) + 1; A1; } 
++  
++#define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;)               
++
++#define RangeDecoderBitTreeDecode(probs, numLevels, res) \
++  { int i = numLevels; res = 1; \
++  do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); \
++  res -= (1 << numLevels); }
++
++
++#define kNumPosBitsMax 4
++#define kNumPosStatesMax (1 << kNumPosBitsMax)
++
++#define kLenNumLowBits 3
++#define kLenNumLowSymbols (1 << kLenNumLowBits)
++#define kLenNumMidBits 3
++#define kLenNumMidSymbols (1 << kLenNumMidBits)
++#define kLenNumHighBits 8
++#define kLenNumHighSymbols (1 << kLenNumHighBits)
++
++#define LenChoice 0
++#define LenChoice2 (LenChoice + 1)
++#define LenLow (LenChoice2 + 1)
++#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
++#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
++#define kNumLenProbs (LenHigh + kLenNumHighSymbols) 
++
++
++#define kNumStates 12
++#define kNumLitStates 7
++
++#define kStartPosModelIndex 4
++#define kEndPosModelIndex 14
++#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
++
++#define kNumPosSlotBits 6
++#define kNumLenToPosStates 4
++
++#define kNumAlignBits 4
++#define kAlignTableSize (1 << kNumAlignBits)
++
++#define kMatchMinLen 2
++
++#define IsMatch 0
++#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
++#define IsRepG0 (IsRep + kNumStates)
++#define IsRepG1 (IsRepG0 + kNumStates)
++#define IsRepG2 (IsRepG1 + kNumStates)
++#define IsRep0Long (IsRepG2 + kNumStates)
++#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
++#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
++#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
++#define LenCoder (Align + kAlignTableSize)
++#define RepLenCoder (LenCoder + kNumLenProbs)
++#define Literal (RepLenCoder + kNumLenProbs)
++
++#if Literal != LZMA_BASE_SIZE
++StopCompilingDueBUG
++#endif
++
++#if 0
++int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size)
++{
++  unsigned char prop0;
++  if (size < LZMA_PROPERTIES_SIZE)
++    return LZMA_RESULT_DATA_ERROR;
++  prop0 = propsData[0];
++  if (prop0 >= (9 * 5 * 5))
++    return LZMA_RESULT_DATA_ERROR;
++  {
++    for (propsRes->pb = 0; prop0 >= (9 * 5); propsRes->pb++, prop0 -= (9 * 5));
++    for (propsRes->lp = 0; prop0 >= 9; propsRes->lp++, prop0 -= 9);
++    propsRes->lc = prop0;
++    /*
++    unsigned char remainder = (unsigned char)(prop0 / 9);
++    propsRes->lc = prop0 % 9;
++    propsRes->pb = remainder / 5;
++    propsRes->lp = remainder % 5;
++    */
++  }
++
++  #ifdef _LZMA_OUT_READ
++  {
++    int i;
++    propsRes->DictionarySize = 0;
++    for (i = 0; i < 4; i++)
++      propsRes->DictionarySize += (UInt32)(propsData[1 + i]) << (i * 8);
++    if (propsRes->DictionarySize == 0)
++      propsRes->DictionarySize = 1;
++  }
++  #endif
++  return LZMA_RESULT_OK;
++}
++#endif
++
++#define kLzmaStreamWasFinishedId (-1)
++
++int LzmaDecode(CLzmaDecoderState *vs,
++    #ifdef _LZMA_IN_CB
++    ILzmaInCallback *InCallback,
++    #else
++    const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
++    #endif
++    unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed)
++{
++  CProb *p = vs->Probs;
++  SizeT nowPos = 0;
++  Byte previousByte = 0;
++  UInt32 posStateMask = (1 << (vs->Properties.pb)) - 1;
++  UInt32 literalPosMask = (1 << (vs->Properties.lp)) - 1;
++  int lc = vs->Properties.lc;
++
++  #ifdef _LZMA_OUT_READ
++  
++  UInt32 Range = vs->Range;
++  UInt32 Code = vs->Code;
++  #ifdef _LZMA_IN_CB
++  const Byte *Buffer = vs->Buffer;
++  const Byte *BufferLim = vs->BufferLim;
++  #else
++  const Byte *Buffer = inStream;
++  const Byte *BufferLim = inStream + inSize;
++  #endif
++  int state = vs->State;
++  UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
++  int len = vs->RemainLen;
++  UInt32 globalPos = vs->GlobalPos;
++  UInt32 distanceLimit = vs->DistanceLimit;
++
++  Byte *dictionary = vs->Dictionary;
++  UInt32 dictionarySize = vs->Properties.DictionarySize;
++  UInt32 dictionaryPos = vs->DictionaryPos;
++
++  Byte tempDictionary[4];
++
++  #ifndef _LZMA_IN_CB
++  *inSizeProcessed = 0;
++  #endif
++  *outSizeProcessed = 0;
++  if (len == kLzmaStreamWasFinishedId)
++    return LZMA_RESULT_OK;
++
++  if (dictionarySize == 0)
++  {
++    dictionary = tempDictionary;
++    dictionarySize = 1;
++    tempDictionary[0] = vs->TempDictionary[0];
++  }
++
++  if (len == kLzmaNeedInitId)
++  {
++    {
++      UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
++      UInt32 i;
++      for (i = 0; i < numProbs; i++)
++        p[i] = kBitModelTotal >> 1; 
++      rep0 = rep1 = rep2 = rep3 = 1;
++      state = 0;
++      globalPos = 0;
++      distanceLimit = 0;
++      dictionaryPos = 0;
++      dictionary[dictionarySize - 1] = 0;
++      #ifdef _LZMA_IN_CB
++      RC_INIT;
++      #else
++      RC_INIT(inStream, inSize);
++      #endif
++    }
++    len = 0;
++  }
++  while(len != 0 && nowPos < outSize)
++  {
++    UInt32 pos = dictionaryPos - rep0;
++    if (pos >= dictionarySize)
++      pos += dictionarySize;
++    outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos];
++    if (++dictionaryPos == dictionarySize)
++      dictionaryPos = 0;
++    len--;
++  }
++  if (dictionaryPos == 0)
++    previousByte = dictionary[dictionarySize - 1];
++  else
++    previousByte = dictionary[dictionaryPos - 1];
++
++  #else /* if !_LZMA_OUT_READ */
++
++  int state = 0;
++  UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
++  int len = 0;
++  const Byte *Buffer;
++  const Byte *BufferLim;
++  UInt32 Range;
++  UInt32 Code;
++
++  #ifndef _LZMA_IN_CB
++  *inSizeProcessed = 0;
++  #endif
++  *outSizeProcessed = 0;
++
++  {
++    UInt32 i;
++    UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
++    for (i = 0; i < numProbs; i++)
++      p[i] = kBitModelTotal >> 1;
++  }
++  
++  #ifdef _LZMA_IN_CB
++  RC_INIT;
++  #else
++  RC_INIT(inStream, inSize);
++  #endif
++
++  #endif /* _LZMA_OUT_READ */
++
++  while(nowPos < outSize)
++  {
++    CProb *prob;
++    UInt32 bound;
++    int posState = (int)(
++        (nowPos 
++        #ifdef _LZMA_OUT_READ
++        + globalPos
++        #endif
++        )
++        & posStateMask);
++
++    prob = p + IsMatch + (state << kNumPosBitsMax) + posState;
++    IfBit0(prob)
++    {
++      int symbol = 1;
++      UpdateBit0(prob)
++      prob = p + Literal + (LZMA_LIT_SIZE * 
++        (((
++        (nowPos 
++        #ifdef _LZMA_OUT_READ
++        + globalPos
++        #endif
++        )
++        & literalPosMask) << lc) + (previousByte >> (8 - lc))));
++
++      if (state >= kNumLitStates)
++      {
++        int matchByte;
++        #ifdef _LZMA_OUT_READ
++        UInt32 pos = dictionaryPos - rep0;
++        if (pos >= dictionarySize)
++          pos += dictionarySize;
++        matchByte = dictionary[pos];
++        #else
++        matchByte = outStream[nowPos - rep0];
++        #endif
++        do
++        {
++          int bit;
++          CProb *probLit;
++          matchByte <<= 1;
++          bit = (matchByte & 0x100);
++          probLit = prob + 0x100 + bit + symbol;
++          RC_GET_BIT2(probLit, symbol, if (bit != 0) break, if (bit == 0) break)
++        }
++        while (symbol < 0x100);
++      }
++      while (symbol < 0x100)
++      {
++        CProb *probLit = prob + symbol;
++        RC_GET_BIT(probLit, symbol)
++      }
++      previousByte = (Byte)symbol;
++
++      outStream[nowPos++] = previousByte;
++      #ifdef _LZMA_OUT_READ
++      if (distanceLimit < dictionarySize)
++        distanceLimit++;
++
++      dictionary[dictionaryPos] = previousByte;
++      if (++dictionaryPos == dictionarySize)
++        dictionaryPos = 0;
++      #endif
++      if (state < 4) state = 0;
++      else if (state < 10) state -= 3;
++      else state -= 6;
++    }
++    else             
++    {
++      UpdateBit1(prob);
++      prob = p + IsRep + state;
++      IfBit0(prob)
++      {
++        UpdateBit0(prob);
++        rep3 = rep2;
++        rep2 = rep1;
++        rep1 = rep0;
++        state = state < kNumLitStates ? 0 : 3;
++        prob = p + LenCoder;
++      }
++      else
++      {
++        UpdateBit1(prob);
++        prob = p + IsRepG0 + state;
++        IfBit0(prob)
++        {
++          UpdateBit0(prob);
++          prob = p + IsRep0Long + (state << kNumPosBitsMax) + posState;
++          IfBit0(prob)
++          {
++            #ifdef _LZMA_OUT_READ
++            UInt32 pos;
++            #endif
++            UpdateBit0(prob);
++            
++            #ifdef _LZMA_OUT_READ
++            if (distanceLimit == 0)
++            #else
++            if (nowPos == 0)
++            #endif
++              return LZMA_RESULT_DATA_ERROR;
++            
++            state = state < kNumLitStates ? 9 : 11;
++            #ifdef _LZMA_OUT_READ
++            pos = dictionaryPos - rep0;
++            if (pos >= dictionarySize)
++              pos += dictionarySize;
++            previousByte = dictionary[pos];
++            dictionary[dictionaryPos] = previousByte;
++            if (++dictionaryPos == dictionarySize)
++              dictionaryPos = 0;
++            #else
++            previousByte = outStream[nowPos - rep0];
++            #endif
++            outStream[nowPos++] = previousByte;
++            #ifdef _LZMA_OUT_READ
++            if (distanceLimit < dictionarySize)
++              distanceLimit++;
++            #endif
++
++            continue;
++          }
++          else
++          {
++            UpdateBit1(prob);
++          }
++        }
++        else
++        {
++          UInt32 distance;
++          UpdateBit1(prob);
++          prob = p + IsRepG1 + state;
++          IfBit0(prob)
++          {
++            UpdateBit0(prob);
++            distance = rep1;
++          }
++          else 
++          {
++            UpdateBit1(prob);
++            prob = p + IsRepG2 + state;
++            IfBit0(prob)
++            {
++              UpdateBit0(prob);
++              distance = rep2;
++            }
++            else
++            {
++              UpdateBit1(prob);
++              distance = rep3;
++              rep3 = rep2;
++            }
++            rep2 = rep1;
++          }
++          rep1 = rep0;
++          rep0 = distance;
++        }
++        state = state < kNumLitStates ? 8 : 11;
++        prob = p + RepLenCoder;
++      }
++      {
++        int numBits, offset;
++        CProb *probLen = prob + LenChoice;
++        IfBit0(probLen)
++        {
++          UpdateBit0(probLen);
++          probLen = prob + LenLow + (posState << kLenNumLowBits);
++          offset = 0;
++          numBits = kLenNumLowBits;
++        }
++        else
++        {
++          UpdateBit1(probLen);
++          probLen = prob + LenChoice2;
++          IfBit0(probLen)
++          {
++            UpdateBit0(probLen);
++            probLen = prob + LenMid + (posState << kLenNumMidBits);
++            offset = kLenNumLowSymbols;
++            numBits = kLenNumMidBits;
++          }
++          else
++          {
++            UpdateBit1(probLen);
++            probLen = prob + LenHigh;
++            offset = kLenNumLowSymbols + kLenNumMidSymbols;
++            numBits = kLenNumHighBits;
++          }
++        }
++        RangeDecoderBitTreeDecode(probLen, numBits, len);
++        len += offset;
++      }
++
++      if (state < 4)
++      {
++        int posSlot;
++        state += kNumLitStates;
++        prob = p + PosSlot +
++            ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << 
++            kNumPosSlotBits);
++        RangeDecoderBitTreeDecode(prob, kNumPosSlotBits, posSlot);
++        if (posSlot >= kStartPosModelIndex)
++        {
++          int numDirectBits = ((posSlot >> 1) - 1);
++          rep0 = (2 | ((UInt32)posSlot & 1));
++          if (posSlot < kEndPosModelIndex)
++          {
++            rep0 <<= numDirectBits;
++            prob = p + SpecPos + rep0 - posSlot - 1;
++          }
++          else
++          {
++            numDirectBits -= kNumAlignBits;
++            do
++            {
++              RC_NORMALIZE
++              Range >>= 1;
++              rep0 <<= 1;
++              if (Code >= Range)
++              {
++                Code -= Range;
++                rep0 |= 1;
++              }
++            }
++            while (--numDirectBits != 0);
++            prob = p + Align;
++            rep0 <<= kNumAlignBits;
++            numDirectBits = kNumAlignBits;
++          }
++          {
++            int i = 1;
++            int mi = 1;
++            do
++            {
++              CProb *prob3 = prob + mi;
++              RC_GET_BIT2(prob3, mi, ; , rep0 |= i);
++              i <<= 1;
++            }
++            while(--numDirectBits != 0);
++          }
++        }
++        else
++          rep0 = posSlot;
++        if (++rep0 == (UInt32)(0))
++        {
++          /* it's for stream version */
++          len = kLzmaStreamWasFinishedId;
++          break;
++        }
++      }
++
++      len += kMatchMinLen;
++      #ifdef _LZMA_OUT_READ
++      if (rep0 > distanceLimit) 
++      #else
++      if (rep0 > nowPos)
++      #endif
++        return LZMA_RESULT_DATA_ERROR;
++
++      #ifdef _LZMA_OUT_READ
++      if (dictionarySize - distanceLimit > (UInt32)len)
++        distanceLimit += len;
++      else
++        distanceLimit = dictionarySize;
++      #endif
++
++      do
++      {
++        #ifdef _LZMA_OUT_READ
++        UInt32 pos = dictionaryPos - rep0;
++        if (pos >= dictionarySize)
++          pos += dictionarySize;
++        previousByte = dictionary[pos];
++        dictionary[dictionaryPos] = previousByte;
++        if (++dictionaryPos == dictionarySize)
++          dictionaryPos = 0;
++        #else
++        previousByte = outStream[nowPos - rep0];
++        #endif
++        len--;
++        outStream[nowPos++] = previousByte;
++      }
++      while(len != 0 && nowPos < outSize);
++    }
++  }
++  RC_NORMALIZE;
++
++  #ifdef _LZMA_OUT_READ
++  vs->Range = Range;
++  vs->Code = Code;
++  vs->DictionaryPos = dictionaryPos;
++  vs->GlobalPos = globalPos + (UInt32)nowPos;
++  vs->DistanceLimit = distanceLimit;
++  vs->Reps[0] = rep0;
++  vs->Reps[1] = rep1;
++  vs->Reps[2] = rep2;
++  vs->Reps[3] = rep3;
++  vs->State = state;
++  vs->RemainLen = len;
++  vs->TempDictionary[0] = tempDictionary[0];
++  #endif
++
++  #ifdef _LZMA_IN_CB
++  vs->Buffer = Buffer;
++  vs->BufferLim = BufferLim;
++  #else
++  *inSizeProcessed = (SizeT)(Buffer - inStream);
++  #endif
++  *outSizeProcessed = nowPos;
++  return LZMA_RESULT_OK;
++}
+--- /dev/null
++++ b/arch/arm/boot/compressed/LzmaDecode.h
+@@ -0,0 +1,131 @@
++/* 
++  LzmaDecode.h
++  LZMA Decoder interface
++
++  LZMA SDK 4.21 Copyright (c) 1999-2005 Igor Pavlov (2005-06-08)
++  http://www.7-zip.org/
++
++  LZMA SDK is licensed under two licenses:
++  1) GNU Lesser General Public License (GNU LGPL)
++  2) Common Public License (CPL)
++  It means that you can select one of these two licenses and 
++  follow rules of that license.
++
++  SPECIAL EXCEPTION:
++  Igor Pavlov, as the author of this code, expressly permits you to 
++  statically or dynamically link your code (or bind by name) to the 
++  interfaces of this file without subjecting your linked code to the 
++  terms of the CPL or GNU LGPL. Any modifications or additions 
++  to this file, however, are subject to the LGPL or CPL terms.
++*/
++
++#ifndef __LZMADECODE_H
++#define __LZMADECODE_H
++
++/* #define _LZMA_IN_CB */
++/* Use callback for input data */
++
++/* #define _LZMA_OUT_READ */
++/* Use read function for output data */
++
++/* #define _LZMA_PROB32 */
++/* It can increase speed on some 32-bit CPUs, 
++   but memory usage will be doubled in that case */
++
++/* #define _LZMA_LOC_OPT */
++/* Enable local speed optimizations inside code */
++
++/* #define _LZMA_SYSTEM_SIZE_T */
++/* Use system's size_t. You can use it to enable 64-bit sizes supporting*/
++
++#ifndef UInt32
++#ifdef _LZMA_UINT32_IS_ULONG
++#define UInt32 unsigned long
++#else
++#define UInt32 unsigned int
++#endif
++#endif
++
++#ifndef SizeT
++#ifdef _LZMA_SYSTEM_SIZE_T
++#include <stddef.h>
++#define SizeT size_t
++#else
++#define SizeT UInt32
++#endif
++#endif
++
++#ifdef _LZMA_PROB32
++#define CProb UInt32
++#else
++#define CProb unsigned short
++#endif
++
++#define LZMA_RESULT_OK 0
++#define LZMA_RESULT_DATA_ERROR 1
++
++#ifdef _LZMA_IN_CB
++typedef struct _ILzmaInCallback
++{
++  int (*Read)(void *object, const unsigned char **buffer, SizeT *bufferSize);
++} ILzmaInCallback;
++#endif
++
++#define LZMA_BASE_SIZE 1846
++#define LZMA_LIT_SIZE 768
++
++#define LZMA_PROPERTIES_SIZE 5
++
++typedef struct _CLzmaProperties
++{
++  int lc;
++  int lp;
++  int pb;
++  #ifdef _LZMA_OUT_READ
++  UInt32 DictionarySize;
++  #endif
++}CLzmaProperties;
++
++int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size);
++
++#define LzmaGetNumProbs(Properties) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((Properties)->lc + (Properties)->lp)))
++
++#define kLzmaNeedInitId (-2)
++
++typedef struct _CLzmaDecoderState
++{
++  CLzmaProperties Properties;
++  CProb *Probs;
++
++  #ifdef _LZMA_IN_CB
++  const unsigned char *Buffer;
++  const unsigned char *BufferLim;
++  #endif
++
++  #ifdef _LZMA_OUT_READ
++  unsigned char *Dictionary;
++  UInt32 Range;
++  UInt32 Code;
++  UInt32 DictionaryPos;
++  UInt32 GlobalPos;
++  UInt32 DistanceLimit;
++  UInt32 Reps[4];
++  int State;
++  int RemainLen;
++  unsigned char TempDictionary[4];
++  #endif
++} CLzmaDecoderState;
++
++#ifdef _LZMA_OUT_READ
++#define LzmaDecoderInit(vs) { (vs)->RemainLen = kLzmaNeedInitId; }
++#endif
++
++int LzmaDecode(CLzmaDecoderState *vs,
++    #ifdef _LZMA_IN_CB
++    ILzmaInCallback *inCallback,
++    #else
++    const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
++    #endif
++    unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed);
++
++#endif
+--- a/arch/arm/boot/compressed/Makefile
++++ b/arch/arm/boot/compressed/Makefile
+@@ -5,7 +5,7 @@
+ #
+ 
+ HEAD	= head.o
+-OBJS	= misc.o
++OBJS	= misc.o ../../lib/lib1funcs.o
+ FONTC	= $(srctree)/drivers/video/console/font_acorn_8x8.c
+ 
+ #
+@@ -63,7 +63,7 @@ endif
+ 
+ SEDFLAGS	= s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
+ 
+-targets       := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \
++targets       := vmlinux vmlinux.lds piggy.lzma piggy.o font.o font.c \
+ 		 head.o misc.o $(OBJS)
+ 
+ ifeq ($(CONFIG_FUNCTION_TRACER),y)
+@@ -96,10 +96,10 @@ $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj
+ 	$(call if_changed,ld)
+ 	@:
+ 
+-$(obj)/piggy.gz: $(obj)/../Image FORCE
+-	$(call if_changed,gzip)
++$(obj)/piggy.lzma: $(obj)/../Image FORCE
++	$(call if_changed,lzma)
+ 
+-$(obj)/piggy.o:  $(obj)/piggy.gz FORCE
++$(obj)/piggy.o:  $(obj)/piggy.lzma FORCE
+ 
+ CFLAGS_font.o := -Dstatic=
+ 
+--- a/arch/arm/boot/compressed/misc.c
++++ b/arch/arm/boot/compressed/misc.c
+@@ -202,8 +202,8 @@ typedef unsigned long  ulg;
+ static uch *inbuf;		/* input buffer */
+ static uch window[WSIZE];	/* Sliding window buffer */
+ 
+-static unsigned insize;		/* valid bytes in inbuf */
+-static unsigned inptr;		/* index of next byte to be processed in inbuf */
++static unsigned insize = 0;		/* valid bytes in inbuf */
++static unsigned inptr = 0;		/* index of next byte to be processed in inbuf */
+ static unsigned outcnt;		/* bytes in output buffer */
+ 
+ /* gzip flag byte */
+@@ -242,7 +242,7 @@ extern char input_data[];
+ extern char input_data_end[];
+ 
+ static uch *output_data;
+-static ulg output_ptr;
++static ulg output_ptr = 0;
+ static ulg bytes_out;
+ 
+ static void error(char *m);
+@@ -259,7 +259,7 @@ static ulg free_mem_end_ptr;
+ 
+ #define ARCH_HAS_DECOMP_WDOG
+ 
+-#include "../../../../lib/inflate.c"
++/* #include "../../../../lib/inflate.c" */
+ 
+ /* ===========================================================================
+  * Fill the input buffer. This is called only when the buffer is empty
+@@ -277,6 +277,76 @@ int fill_inbuf(void)
+ 	return inbuf[0];
+ }
+ 
++#define _LZMA_IN_CB
++#include "LzmaDecode.h"
++#include "LzmaDecode.c"
++
++void __div0(void)
++{
++}
++
++static int read_byte(void *object, const unsigned char **buffer, SizeT *bufferSize);
++
++/*
++ * Do the lzma decompression
++ */
++static int unlzma(void)
++{
++
++	unsigned int i;
++	CLzmaDecoderState state;
++	unsigned int uncompressedSize = 0;
++
++	ILzmaInCallback callback;
++	callback.Read = read_byte;
++
++	/* lzma args */
++	i = get_byte();
++	state.Properties.lc = i % 9, i = i / 9;
++	state.Properties.lp = i % 5, state.Properties.pb = i / 5;
++
++	/* skip dictionary size */
++	for (i = 0; i < 4; i++)
++		get_byte();
++	/* get uncompressed size */
++	uncompressedSize = (get_byte()) +
++		(get_byte() << 8) +
++		(get_byte() << 16) +
++		(get_byte() << 24);
++
++	/* skip high order bytes */
++	for (i = 0; i < 4; i++)
++		get_byte();
++	/* point it beyond uncompresedSize */
++	state.Probs = (CProb *) (output_data + uncompressedSize);
++
++	/* decompress kernel */
++	if (LzmaDecode(&state, &callback,
++		(unsigned char *)output_data, uncompressedSize, &i) == LZMA_RESULT_OK) {
++		if (i != uncompressedSize)
++			error("kernel corrupted!\n");
++		/* copy it back to low_buffer */
++		bytes_out = i;
++		output_ptr = i;
++		return 0;
++	}
++	return 1;
++}
++
++static unsigned int icnt = 0;
++
++static int read_byte(void *object, const unsigned char **buffer, SizeT *bufferSize)
++{
++	static unsigned char val;
++	*bufferSize = 1;
++	val = get_byte();
++	*buffer = &val;
++	if (icnt++ % (1024 * 10) == 0)
++		putstr(".");
++	return LZMA_RESULT_OK;
++}
++
++#if 0
+ /* ===========================================================================
+  * Write the output window window[0..outcnt-1] and update crc and bytes_out.
+  * (Used for the decompressed data only.)
+@@ -299,6 +369,7 @@ void flush_window(void)
+ 	outcnt = 0;
+ 	putstr(".");
+ }
++#endif
+ 
+ #ifndef arch_error
+ #define arch_error(x)
+@@ -328,9 +399,9 @@ decompress_kernel(ulg output_start, ulg 
+ 
+ 	arch_decomp_setup();
+ 
+-	makecrc();
++	/* makecrc(); */
+ 	putstr("Uncompressing Linux...");
+-	gunzip();
++	unlzma();
+ 	putstr(" done, booting the kernel.\n");
+ 	return output_ptr;
+ }
+@@ -342,9 +413,9 @@ int main()
+ {
+ 	output_data = output_buffer;
+ 
+-	makecrc();
++	/* makecrc(); */
+ 	putstr("Uncompressing Linux...");
+-	gunzip();
++	unlzma();
+ 	putstr("done.\n");
+ 	return 0;
+ }
+--- a/arch/arm/boot/compressed/piggy.S
++++ b/arch/arm/boot/compressed/piggy.S
+@@ -1,6 +1,6 @@
+ 	.section .piggydata,#alloc
+ 	.globl	input_data
+ input_data:
+-	.incbin	"arch/arm/boot/compressed/piggy.gz"
++	.incbin	"arch/arm/boot/compressed/piggy.lzma"
+ 	.globl	input_data_end
+ input_data_end: