additions and mods for lzma.

Signed-off-by: Carl-Daniel Hailfinger
Signed-off-by: Ronald G. Minnich


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2413 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/lib/lzma.c

@@ -0,0 +1,39 @@
+/* 
+
+LinuxBIOS interface to memory-saving variant of LZMA decoder
+(C)opyright 2006 Carl-Daniel Hailfinger
+Released under the GNU GPL
+
+*/
+
+#include "lzmadecode.c"
+
+
+static unsigned long ulzma(unsigned char * src, unsigned char * dst)
+{
+	unsigned char properties[LZMA_PROPERTIES_SIZE];
+	UInt32 outSize;
+	SizeT inProcessed;
+	SizeT outProcessed;
+	int res;
+	CLzmaDecoderState state;
+	SizeT mallocneeds;
+	unsigned char scratchpad[15980];
+
+	memcpy(properties, src, LZMA_PROPERTIES_SIZE);
+	outSize = *(UInt32 *)(src + LZMA_PROPERTIES_SIZE);
+	if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK) {
+		printk_warning("Incorrect stream properties\n");
+	}
+	mallocneeds = (LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+	if (mallocneeds > 15980) {
+		printk_warning("Decoder scratchpad too small!\n");
+	}
+	state.Probs = (CProb *)scratchpad;
+	res = LzmaDecode(&state, src + LZMA_PROPERTIES_SIZE + 8, (SizeT)0xffffffff, &inProcessed,
+		dst, outSize, &outProcessed);
+	if (res != 0) {
+		printk_warning("Decoding error = %d\n", res);
+	}
+	return outSize;
+}