diff options
Diffstat (limited to 'target/linux/rdc/files/arch/x86/boot/compressed')
3 files changed, 0 insertions, 1031 deletions
diff --git a/target/linux/rdc/files/arch/x86/boot/compressed/LzmaDecode.c b/target/linux/rdc/files/arch/x86/boot/compressed/LzmaDecode.c deleted file mode 100644 index a17d6caab..000000000 --- a/target/linux/rdc/files/arch/x86/boot/compressed/LzmaDecode.c +++ /dev/null @@ -1,586 +0,0 @@ -/* - LzmaDecode.c - LZMA Decoder (optimized for Speed version) - - LZMA SDK 4.17 Copyright (c) 1999-2005 Igor Pavlov (2005-04-05) - 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) \ - { UInt32 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 - -#ifdef _LZMA_OUT_READ - -typedef struct _LzmaVarState -{ - Byte *Buffer; - Byte *BufferLim; - UInt32 Range; - UInt32 Code; - #ifdef _LZMA_IN_CB - ILzmaInCallback *InCallback; - #endif - Byte *Dictionary; - UInt32 DictionarySize; - UInt32 DictionaryPos; - UInt32 GlobalPos; - UInt32 Reps[4]; - int lc; - int lp; - int pb; - int State; - int RemainLen; - Byte TempDictionary[4]; -} LzmaVarState; - -int LzmaDecoderInit( - unsigned char *buffer, UInt32 bufferSize, - int lc, int lp, int pb, - unsigned char *dictionary, UInt32 dictionarySize, - #ifdef _LZMA_IN_CB - ILzmaInCallback *InCallback - #else - unsigned char *inStream, UInt32 inSize - #endif - ) -{ - Byte *Buffer; - Byte *BufferLim; - UInt32 Range; - UInt32 Code; - LzmaVarState *vs = (LzmaVarState *)buffer; - CProb *p = (CProb *)(buffer + sizeof(LzmaVarState)); - UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp)); - UInt32 i; - if (bufferSize < numProbs * sizeof(CProb) + sizeof(LzmaVarState)) - return LZMA_RESULT_NOT_ENOUGH_MEM; - vs->Dictionary = dictionary; - vs->DictionarySize = dictionarySize; - vs->DictionaryPos = 0; - vs->GlobalPos = 0; - vs->Reps[0] = vs->Reps[1] = vs->Reps[2] = vs->Reps[3] = 1; - vs->lc = lc; - vs->lp = lp; - vs->pb = pb; - vs->State = 0; - vs->RemainLen = 0; - dictionary[dictionarySize - 1] = 0; - for (i = 0; i < numProbs; i++) - p[i] = kBitModelTotal >> 1; - - #ifdef _LZMA_IN_CB - RC_INIT; - #else - RC_INIT(inStream, inSize); - #endif - vs->Buffer = Buffer; - vs->BufferLim = BufferLim; - vs->Range = Range; - vs->Code = Code; - #ifdef _LZMA_IN_CB - vs->InCallback = InCallback; - #endif - - return LZMA_RESULT_OK; -} - -int LzmaDecode(unsigned char *buffer, - unsigned char *outStream, UInt32 outSize, - UInt32 *outSizeProcessed) -{ - LzmaVarState *vs = (LzmaVarState *)buffer; - Byte *Buffer = vs->Buffer; - Byte *BufferLim = vs->BufferLim; - UInt32 Range = vs->Range; - UInt32 Code = vs->Code; - #ifdef _LZMA_IN_CB - ILzmaInCallback *InCallback = vs->InCallback; - #endif - CProb *p = (CProb *)(buffer + sizeof(LzmaVarState)); - int state = vs->State; - Byte previousByte; - UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3]; - UInt32 nowPos = 0; - UInt32 posStateMask = (1 << (vs->pb)) - 1; - UInt32 literalPosMask = (1 << (vs->lp)) - 1; - int lc = vs->lc; - int len = vs->RemainLen; - UInt32 globalPos = vs->GlobalPos; - - Byte *dictionary = vs->Dictionary; - UInt32 dictionarySize = vs->DictionarySize; - UInt32 dictionaryPos = vs->DictionaryPos; - - Byte tempDictionary[4]; - if (dictionarySize == 0) - { - dictionary = tempDictionary; - dictionarySize = 1; - tempDictionary[0] = vs->TempDictionary[0]; - } - - if (len == -1) - { - *outSizeProcessed = 0; - return LZMA_RESULT_OK; - } - - 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 - -int LzmaDecode( - Byte *buffer, UInt32 bufferSize, - int lc, int lp, int pb, - #ifdef _LZMA_IN_CB - ILzmaInCallback *InCallback, - #else - unsigned char *inStream, UInt32 inSize, - #endif - unsigned char *outStream, UInt32 outSize, - UInt32 *outSizeProcessed) -{ - UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp)); - CProb *p = (CProb *)buffer; - - UInt32 i; - int state = 0; - Byte previousByte = 0; - UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1; - UInt32 nowPos = 0; - UInt32 posStateMask = (1 << pb) - 1; - UInt32 literalPosMask = (1 << lp) - 1; - int len = 0; - - Byte *Buffer; - Byte *BufferLim; - UInt32 Range; - UInt32 Code; - - if (bufferSize < numProbs * sizeof(CProb)) - return LZMA_RESULT_NOT_ENOUGH_MEM; - for (i = 0; i < numProbs; i++) - p[i] = kBitModelTotal >> 1; - - - #ifdef _LZMA_IN_CB - RC_INIT; - #else - RC_INIT(inStream, inSize); - #endif -#endif - - *outSizeProcessed = 0; - 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 - 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); - if (nowPos - #ifdef _LZMA_OUT_READ - + globalPos - #endif - == 0) - 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; - 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 = -1; - break; - } - } - - len += kMatchMinLen; - if (rep0 > nowPos - #ifdef _LZMA_OUT_READ - + globalPos || rep0 > dictionarySize - #endif - ) - return LZMA_RESULT_DATA_ERROR; - 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->Buffer = Buffer; - vs->BufferLim = BufferLim; - vs->Range = Range; - vs->Code = Code; - vs->DictionaryPos = dictionaryPos; - vs->GlobalPos = globalPos + nowPos; - 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 - - *outSizeProcessed = nowPos; - return LZMA_RESULT_OK; -} diff --git a/target/linux/rdc/files/arch/x86/boot/compressed/LzmaDecode.h b/target/linux/rdc/files/arch/x86/boot/compressed/LzmaDecode.h deleted file mode 100644 index 53677350a..000000000 --- a/target/linux/rdc/files/arch/x86/boot/compressed/LzmaDecode.h +++ /dev/null @@ -1,100 +0,0 @@ -/* - LzmaDecode.h - LZMA Decoder interface - - LZMA SDK 4.16 Copyright (c) 1999-2005 Igor Pavlov (2005-03-18) - 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 */ - -#ifndef UInt32 -#ifdef _LZMA_UINT32_IS_ULONG -#define UInt32 unsigned long -#else -#define UInt32 unsigned int -#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 -#define LZMA_RESULT_NOT_ENOUGH_MEM 2 - -#ifdef _LZMA_IN_CB -typedef struct _ILzmaInCallback -{ - int (*Read)(void *object, unsigned char **buffer, UInt32 *bufferSize); -} ILzmaInCallback; -#endif - -#define LZMA_BASE_SIZE 1846 -#define LZMA_LIT_SIZE 768 - -/* -bufferSize = (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp)))* sizeof(CProb) -bufferSize += 100 in case of _LZMA_OUT_READ -by default CProb is unsigned short, -but if specify _LZMA_PROB_32, CProb will be UInt32(unsigned int) -*/ - -#ifdef _LZMA_OUT_READ -int LzmaDecoderInit( - unsigned char *buffer, UInt32 bufferSize, - int lc, int lp, int pb, - unsigned char *dictionary, UInt32 dictionarySize, - #ifdef _LZMA_IN_CB - ILzmaInCallback *inCallback - #else - unsigned char *inStream, UInt32 inSize - #endif -); -#endif - -int LzmaDecode( - unsigned char *buffer, - #ifndef _LZMA_OUT_READ - UInt32 bufferSize, - int lc, int lp, int pb, - #ifdef _LZMA_IN_CB - ILzmaInCallback *inCallback, - #else - unsigned char *inStream, UInt32 inSize, - #endif - #endif - unsigned char *outStream, UInt32 outSize, - UInt32 *outSizeProcessed); - -#endif diff --git a/target/linux/rdc/files/arch/x86/boot/compressed/lzma_misc.c b/target/linux/rdc/files/arch/x86/boot/compressed/lzma_misc.c deleted file mode 100644 index bd74cb794..000000000 --- a/target/linux/rdc/files/arch/x86/boot/compressed/lzma_misc.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * lzma_misc.c - * - * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 - * puts by Nick Holloway 1993, better puts by Martin Mares 1995 - * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 - * - * Decompress LZMA compressed vmlinuz - * Version 0.9 Copyright (c) Ming-Ching Tiew mctiew@yahoo.com - * Program adapted from misc.c for 2.6 kernel - * Forward ported to latest 2.6 version of misc.c by - * Felix Fietkau <nbd@openwrt.org> - */ - -#undef CONFIG_PARAVIRT -#include <linux/linkage.h> -#include <linux/vmalloc.h> -#include <linux/screen_info.h> -#include <linux/console.h> -#include <linux/string.h> -#include <asm/io.h> -#include <asm/page.h> -#include <asm/boot.h> - -/* WARNING!! - * This code is compiled with -fPIC and it is relocated dynamically - * at run time, but no relocation processing is performed. - * This means that it is not safe to place pointers in static structures. - */ - -/* - * Getting to provable safe in place decompression is hard. - * Worst case behaviours need to be analized. - * Background information: - * - * The file layout is: - * magic[2] - * method[1] - * flags[1] - * timestamp[4] - * extraflags[1] - * os[1] - * compressed data blocks[N] - * crc[4] orig_len[4] - * - * resulting in 18 bytes of non compressed data overhead. - * - * Files divided into blocks - * 1 bit (last block flag) - * 2 bits (block type) - * - * 1 block occurs every 32K -1 bytes or when there 50% compression has been achieved. - * The smallest block type encoding is always used. - * - * stored: - * 32 bits length in bytes. - * - * fixed: - * magic fixed tree. - * symbols. - * - * dynamic: - * dynamic tree encoding. - * symbols. - * - * - * The buffer for decompression in place is the length of the - * uncompressed data, plus a small amount extra to keep the algorithm safe. - * The compressed data is placed at the end of the buffer. The output - * pointer is placed at the start of the buffer and the input pointer - * is placed where the compressed data starts. Problems will occur - * when the output pointer overruns the input pointer. - * - * The output pointer can only overrun the input pointer if the input - * pointer is moving faster than the output pointer. A condition only - * triggered by data whose compressed form is larger than the uncompressed - * form. - * - * The worst case at the block level is a growth of the compressed data - * of 5 bytes per 32767 bytes. - * - * The worst case internal to a compressed block is very hard to figure. - * The worst case can at least be boundined by having one bit that represents - * 32764 bytes and then all of the rest of the bytes representing the very - * very last byte. - * - * All of which is enough to compute an amount of extra data that is required - * to be safe. To avoid problems at the block level allocating 5 extra bytes - * per 32767 bytes of data is sufficient. To avoind problems internal to a block - * adding an extra 32767 bytes (the worst case uncompressed block size) is - * sufficient, to ensure that in the worst case the decompressed data for - * block will stop the byte before the compressed data for a block begins. - * To avoid problems with the compressed data's meta information an extra 18 - * bytes are needed. Leading to the formula: - * - * extra_bytes = (uncompressed_size >> 12) + 32768 + 18 + decompressor_size. - * - * Adding 8 bytes per 32K is a bit excessive but much easier to calculate. - * Adding 32768 instead of 32767 just makes for round numbers. - * Adding the decompressor_size is necessary as it musht live after all - * of the data as well. Last I measured the decompressor is about 14K. - * 10K of actuall data and 4K of bss. - * - */ - -/* - * gzip declarations - */ - -#define OF(args) args -#define STATIC static - -#undef memcpy - -typedef unsigned char uch; -typedef unsigned short ush; -typedef unsigned long ulg; - -#define WSIZE 0x80000000 /* Window size must be at least 32k, - * and a power of two - * We don't actually have a window just - * a huge output buffer so I report - * a 2G windows size, as that should - * always be larger than our output buffer. - */ - -static uch *inbuf; /* input buffer */ -static uch *window; /* Sliding window buffer, (and final output buffer) */ - -static unsigned insize; /* valid bytes in inbuf */ -static unsigned inptr; /* index of next byte to be processed in inbuf */ -static unsigned long workspace; - -#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf()) - -/* Diagnostic functions */ -#ifdef DEBUG -# define Assert(cond,msg) {if(!(cond)) error(msg);} -# define Trace(x) fprintf x -# define Tracev(x) {if (verbose) fprintf x ;} -# define Tracevv(x) {if (verbose>1) fprintf x ;} -# define Tracec(c,x) {if (verbose && (c)) fprintf x ;} -# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;} -#else -# define Assert(cond,msg) -# define Trace(x) -# define Tracev(x) -# define Tracevv(x) -# define Tracec(c,x) -# define Tracecv(c,x) -#endif - -static int fill_inbuf(void); - -/* - * This is set up by the setup-routine at boot-time - */ -static unsigned char *real_mode; /* Pointer to real-mode data */ -extern unsigned char input_data[]; -extern int input_len; - -static void error(char *x); -static void *memcpy(void *dest, const void *src, unsigned n); - -#ifdef CONFIG_X86_NUMAQ -void *xquad_portio; -#endif - -static void* memcpy(void* dest, const void* src, unsigned n) -{ - int i; - char *d = (char *)dest, *s = (char *)src; - - for (i=0;i<n;i++) d[i] = s[i]; - return dest; -} - -/* =========================================================================== - * Fill the input buffer. This is called only when the buffer is empty - * and at least one byte is really needed. - */ -static int fill_inbuf(void) -{ - error("ran out of input data"); - return 0; -} - - -// When using LZMA in callback, the compressed length is not needed. -// Otherwise you need a special version of lzma compression program -// which will pad the compressed length in the header. -#define _LZMA_IN_CB -#include "LzmaDecode.h" -#include "LzmaDecode.c" - -static int read_byte(void *object, unsigned char **buffer, UInt32 *bufferSize); - -static int early_serial_base = 0x3f8; /* ttyS0 */ - -#define XMTRDY 0x20 - -#define DLAB 0x80 - -#define TXR 0 /* Transmit register (WRITE) */ -#define RXR 0 /* Receive register (READ) */ -#define IER 1 /* Interrupt Enable */ -#define IIR 2 /* Interrupt ID */ -#define FCR 2 /* FIFO control */ -#define LCR 3 /* Line control */ -#define MCR 4 /* Modem control */ -#define LSR 5 /* Line Status */ -#define MSR 6 /* Modem Status */ -#define DLL 0 /* Divisor Latch Low */ -#define DLH 1 /* Divisor latch High */ - -static int early_serial_putc(unsigned char ch) -{ - unsigned timeout = 0xffff; - while ((inb(early_serial_base + LSR) & XMTRDY) == 0 && --timeout) - cpu_relax(); - outb(ch, early_serial_base + TXR); - return timeout ? 0 : -1; -} - -static void early_serial_write(const char *s, unsigned n) -{ - while (*s && n-- > 0) { - if (*s == '\n') - early_serial_putc('\r'); - early_serial_putc(*s); - s++; - } -} - -#define DEFAULT_BAUD 38400 - -static __init void early_serial_init(void) -{ - unsigned char c; - unsigned divisor; - unsigned baud = DEFAULT_BAUD; - char *e; - - outb(0x3, early_serial_base + LCR); /* 8n1 */ - outb(0, early_serial_base + IER); /* no interrupt */ - outb(0, early_serial_base + FCR); /* no fifo */ - outb(0x3, early_serial_base + MCR); /* DTR + RTS */ - - baud = DEFAULT_BAUD; - - divisor = 115200 / baud; - c = inb(early_serial_base + LCR); - outb(c | DLAB, early_serial_base + LCR); - outb(divisor & 0xff, early_serial_base + DLL); - outb((divisor >> 8) & 0xff, early_serial_base + DLH); - outb(c & ~DLAB, early_serial_base + LCR); -} - -/* - * Do the lzma decompression - * When using LZMA in callback, the end of input stream is automatically determined - */ -static int lzma_unzip(void) -{ - - unsigned int i; /* temp value */ - unsigned int lc; /* literal context bits */ - unsigned int lp; /* literal pos state bits */ - unsigned int pb; /* pos state bits */ - unsigned int uncompressedSize = 0; - unsigned char* p; - - ILzmaInCallback callback; - callback.Read = read_byte; - - /* lzma args */ - i = get_byte(); - lc = i % 9, i = i / 9; - lp = i % 5, pb = i / 5; - - /* skip dictionary size */ - for (i = 0; i < 4; i++) - get_byte(); - // get uncompressedSize - p= (char*)&uncompressedSize; - for (i = 0; i < 4; i++) - *p++ = get_byte(); - - //get compressedSize - for (i = 0; i < 4; i++) - get_byte(); - - // point it beyond uncompresedSize - //workspace = window + uncompressedSize; - - /* decompress kernel */ - if (LzmaDecode((unsigned char*)workspace, ~0, lc, lp, pb, &callback, - (unsigned char*)window, uncompressedSize, &i) == LZMA_RESULT_OK) - return 0; - else - return 1; -} - - -#ifdef _LZMA_IN_CB -static int read_byte(void *object, unsigned char **buffer, UInt32 *bufferSize) -{ - static unsigned int i = 0; - static unsigned char val; - *bufferSize = 1; - val = get_byte(); - *buffer = &val; - return LZMA_RESULT_OK; -} -#endif - -static void error(char *x) -{ - while(1); /* Halt */ -} - -asmlinkage void decompress_kernel(void *rmode, unsigned long end, - uch *input_data, unsigned long input_len, uch *output) -{ - real_mode = rmode; - - window = output; - inbuf = input_data; /* Input buffer */ - insize = input_len; - inptr = 0; - - if ((u32)output & (CONFIG_PHYSICAL_ALIGN -1)) - error("Destination address not CONFIG_PHYSICAL_ALIGN aligned"); - if ((workspace = end) > ((-__PAGE_OFFSET-(512 <<20)-1) & 0x7fffffff)) - error("Destination address too large"); -#ifndef CONFIG_RELOCATABLE - if ((u32)output != LOAD_PHYSICAL_ADDR) - error("Wrong destination address"); -#endif - early_serial_init(); - early_serial_write("Uncompressing Linux\n", 512); - lzma_unzip(); - early_serial_write("Done, booting\n", 512); - return; -} |