1. Optimization for WIMBOOT mode.

2. Add WIMBOOT for UEFI mode.

wimboot/wimboot-2.7.3/src/xca.h

@@ -0,0 +1,88 @@
+#ifndef _XCA_H
+#define _XCA_H
+
+/*
+ * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * @file
+ *
+ * Xpress Compression Algorithm (MS-XCA) decompression
+ *
+ */
+
+#include <stdint.h>
+#include "huffman.h"
+
+/** Number of XCA codes */
+#define XCA_CODES 512
+
+/** XCA decompressor */
+struct xca {
+	/** Huffman alphabet */
+	struct huffman_alphabet alphabet;
+	/** Raw symbols
+	 *
+	 * Must immediately follow the Huffman alphabet.
+	 */
+	huffman_raw_symbol_t raw[XCA_CODES];
+	/** Code lengths */
+	uint8_t lengths[XCA_CODES];
+};
+
+/** XCA symbol Huffman lengths table */
+struct xca_huf_len {
+	/** Lengths of each symbol */
+	uint8_t nibbles[ XCA_CODES / 2 ];
+} __attribute__ (( packed ));
+
+/**
+ * Extract Huffman-coded length of a raw symbol
+ *
+ * @v lengths		Huffman lengths table
+ * @v symbol		Raw symbol
+ * @ret len		Huffman-coded length
+ */
+static inline unsigned int xca_huf_len ( const struct xca_huf_len *lengths,
+					 unsigned int symbol ) {
+	return ( ( ( lengths->nibbles[ symbol / 2 ] ) >>
+		   ( 4 * ( symbol % 2 ) ) ) & 0x0f );
+}
+
+/** Get word from source data stream */
+#define XCA_GET16( src ) ( {			\
+	const uint16_t *src16 = src;		\
+	src += sizeof ( *src16 );		\
+	*src16; } )
+
+/** Get byte from source data stream */
+#define XCA_GET8( src ) ( {			\
+	const uint8_t *src8 = src;		\
+	src += sizeof ( *src8 );		\
+	*src8; } )
+
+/** XCA source data stream end marker */
+#define XCA_END_MARKER 256
+
+/** XCA block size */
+#define XCA_BLOCK_SIZE ( 64 * 1024 )
+
+extern ssize_t xca_decompress ( const void *data, size_t len, void *buf );
+
+#endif /* _XCA_H */