src/lib/lzma.c

   1 /*
   2
   3 Coreboot interface to memory-saving variant of LZMA decoder
   4 (C)opyright 2006 Carl-Daniel Hailfinger
   5 Released under the GNU GPL
   6
   7 */
   8
   9 #include "lzmadecode.c"
  10
  11
  12 static unsigned long ulzma(unsigned char * src, unsigned char * dst)
  13 {
  14         unsigned char properties[LZMA_PROPERTIES_SIZE];
  15         UInt32 outSize;
  16         SizeT inProcessed;
  17         SizeT outProcessed;
  18         int res;
  19         CLzmaDecoderState state;
  20         SizeT mallocneeds;
  21         unsigned char scratchpad[15980];
  22
  23         memcpy(properties, src, LZMA_PROPERTIES_SIZE);
  24         outSize = *(UInt32 *)(src + LZMA_PROPERTIES_SIZE);
  25         if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK) {
  26                 printk_warning("Incorrect stream properties\n");
  27         }
  28         mallocneeds = (LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
  29         if (mallocneeds > 15980) {
  30                 printk_warning("Decoder scratchpad too small!\n");
  31         }
  32         state.Probs = (CProb *)scratchpad;
  33         res = LzmaDecode(&state, src + LZMA_PROPERTIES_SIZE + 8, (SizeT)0xffffffff, &inProcessed,
  34                 dst, outSize, &outProcessed);
  35         if (res != 0) {
  36                 printk_warning("Decoding error = %d\n", res);
  37         }
  38         return outSize;
  39 }