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+/******************************************************************************
+**
+** FILE NAME : LzmaWrapper.c
+** PROJECT : bootloader
+** MODULES : U-boot
+**
+** DATE : 2 Nov 2006
+** AUTHOR : Lin Mars
+** DESCRIPTION : LZMA decoder support for U-boot 1.1.5
+** COPYRIGHT : Copyright (c) 2006
+** Infineon Technologies AG
+** Am Campeon 1-12, 85579 Neubiberg, Germany
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** HISTORY
+** $Date $Author $Comment
+** 2 Nov 2006 Lin Mars init version which derived from LzmaTest.c from
+** LZMA v4.43 SDK
+*******************************************************************************/
+#define LZMA_NO_STDIO
+#ifndef LZMA_NO_STDIO
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#endif
+
+#include <config.h>
+#include <common.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <malloc.h>
+
+#ifdef CONFIG_LZMA
+
+#include "LzmaDecode.h"
+#include "LzmaWrapper.h"
+
+static const char *kCantReadMessage = "Can not read from source buffer";
+static const char *kCantAllocateMessage = "Not enough buffer for decompression";
+
+static size_t rpos=0, dpos=0;
+
+static int MyReadFileAndCheck(unsigned char *src, void *dest, size_t size)
+{
+ if (size == 0)
+ return 0;
+ memcpy(dest, src + rpos, size);
+ rpos += size;
+ return 1;
+}
+
+int lzma_inflate(unsigned char *source, int s_len, unsigned char *dest, int *d_len)
+{
+ /* We use two 32-bit integers to construct 64-bit integer for file size.
+ You can remove outSizeHigh, if you don't need >= 4GB supporting,
+ or you can use UInt64 outSize, if your compiler supports 64-bit integers*/
+ UInt32 outSize = 0;
+ UInt32 outSizeHigh = 0;
+ SizeT outSizeFull;
+ unsigned char *outStream;
+
+ int waitEOS = 1;
+ /* waitEOS = 1, if there is no uncompressed size in headers,
+ so decoder will wait EOS (End of Stream Marker) in compressed stream */
+
+ SizeT compressedSize;
+ unsigned char *inStream;
+
+ CLzmaDecoderState state; /* it's about 24-80 bytes structure, if int is 32-bit */
+ unsigned char properties[LZMA_PROPERTIES_SIZE];
+
+ int res;
+
+ if (sizeof(UInt32) < 4)
+ {
+ printf("LZMA decoder needs correct UInt32\n");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+
+ {
+ long length=s_len;
+ if ((long)(SizeT)length != length)
+ {
+ printf("Too big compressed stream\n");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+ compressedSize = (SizeT)(length - (LZMA_PROPERTIES_SIZE + 8));
+ }
+
+ /* Read LZMA properties for compressed stream */
+
+ if (!MyReadFileAndCheck(source, properties, sizeof(properties)))
+ {
+ printf("%s\n", kCantReadMessage);
+ return LZMA_RESULT_DATA_ERROR;
+ }
+
+ /* Read uncompressed size */
+ {
+ int i;
+ for (i = 0; i < 8; i++)
+ {
+ unsigned char b;
+ if (!MyReadFileAndCheck(source, &b, 1))
+ {
+ printf("%s\n", kCantReadMessage);
+ return LZMA_RESULT_DATA_ERROR;
+ }
+ if (b != 0xFF)
+ waitEOS = 0;
+ if (i < 4)
+ outSize += (UInt32)(b) << (i * 8);
+ else
+ outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
+ }
+
+ if (waitEOS)
+ {
+ printf("Stream with EOS marker is not supported");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+ outSizeFull = (SizeT)outSize;
+ if (sizeof(SizeT) >= 8)
+ outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
+ else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize)
+ {
+ printf("Too big uncompressed stream");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+ }
+
+ /* Decode LZMA properties and allocate memory */
+ if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK)
+ {
+ printf("Incorrect stream properties");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+ state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+
+ if (outSizeFull == 0)
+ outStream = 0;
+ else
+ {
+ if (outSizeFull > d_len)
+ outStream = 0;
+ else
+ outStream = dest;
+ }
+
+ if (compressedSize == 0)
+ inStream = 0;
+ else
+ {
+ if ((compressedSize+rpos) > s_len )
+ inStream = 0;
+ else
+ inStream = source + rpos;
+ }
+
+ if (state.Probs == 0
+ || (outStream == 0 && outSizeFull != 0)
+ || (inStream == 0 && compressedSize != 0)
+ )
+ {
+ free(state.Probs);
+ printf("%s\n", kCantAllocateMessage);
+ return LZMA_RESULT_DATA_ERROR;
+ }
+
+ /* Decompress */
+ {
+ SizeT inProcessed;
+ SizeT outProcessed;
+ res = LzmaDecode(&state,
+ inStream, compressedSize, &inProcessed,
+ outStream, outSizeFull, &outProcessed);
+ if (res != 0)
+ {
+ printf("\nDecoding error = %d\n", res);
+ res = 1;
+ }
+ else
+ {
+ *d_len = outProcessed;
+ }
+ }
+
+ free(state.Probs);
+ return res;
+}
+
+#endif /* CONFIG_LZMA */