Major upate of JFFS2 code; now in sync with snapshot of MTD CVS of

March 13, 2005); new configuration options CONFIG_JFFS2_LZO and
CONFIG_JFFS2_LZARI are added. Both are undefined by default.

CHANGELOG

@@ -2,6 +2,10 @@
 Changes for U-Boot 1.1.3:
 ======================================================================
 
+* Major upate of JFFS2 code; now in sync with snapshot of MTD CVS of
+  March 13, 2005); new configuration options CONFIG_JFFS2_LZO and
+  CONFIG_JFFS2_LZARI are added. Both are undefined by default.
+
 * Fix problem with symbolic links in JFFS2 code.
 
 * Use linker ASSERT statement to prevent undetected overlapping of

board/canmb/canmb.c

@@ -133,7 +133,7 @@ long int initdram (int board_type)
 	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
 
 	/* find RAM size using SDRAM CS1 only */
-	if (!dramsize) 
+	if (!dramsize)
 		sdram_start(0);
 	test2 = test1 = get_ram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
 	if (!dramsize) {

board/icecube/icecube.c

@@ -133,7 +133,7 @@ long int initdram (int board_type)
 	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
 
 	/* find RAM size using SDRAM CS1 only */
-	if (!dramsize) 
+	if (!dramsize)
 		sdram_start(0);
 	test2 = test1 = get_ram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
 	if (!dramsize) {

board/pm520/pm520.c

@@ -133,7 +133,7 @@ long int initdram (int board_type)
 	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
 
 	/* find RAM size using SDRAM CS1 only */
-	if (!dramsize) 
+	if (!dramsize)
 		sdram_start(0);
 	test2 = test1 = get_ram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
 	if (!dramsize) {

fs/jffs2/Makefile

@@ -27,6 +27,7 @@ LIB	= libjffs2.a
 
 AOBJS	=
 COBJS	= jffs2_1pass.o compr_rtime.o compr_rubin.o compr_zlib.o mini_inflate.o
+COBJS	+= compr_lzo.o compr_lzari.o
 OBJS	= $(AOBJS) $(COBJS)
 
 #CPPFLAGS +=

fs/jffs2/compr_lzari.c

@@ -0,0 +1,262 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2004 Patrik Kluba,
+ *                    University of Szeged, Hungary
+ *
+ * For licensing information, see the file 'LICENCE' in the
+ * jffs2 directory.
+ *
+ * $Id: compr_lzari.c,v 1.3 2004/06/23 16:34:39 havasi Exp $
+ *
+ */
+
+/*
+   Lempel-Ziv-Arithmetic coding compression module for jffs2
+   Based on the LZARI source included in LDS (lossless datacompression sources)
+*/
+
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
+
+/*
+Original copyright follows:
+
+**************************************************************
+	LZARI.C -- A Data Compression Program
+	(tab = 4 spaces)
+**************************************************************
+	4/7/1989 Haruhiko Okumura
+	Use, distribute, and modify this program freely.
+	Please send me your improved versions.
+		PC-VAN		SCIENCE
+		NIFTY-Serve	PAF01022
+		CompuServe	74050,1022
+**************************************************************
+
+LZARI.C (c)1989 by Haruyasu Yoshizaki, Haruhiko Okumura, and Kenji Rikitake.
+All rights reserved. Permission granted for non-commercial use.
+
+*/
+
+/*
+
+	2004-02-18  pajko <pajko(AT)halom(DOT)u-szeged(DOT)hu>
+				Removed unused variables and fixed no return value
+
+	2004-02-16  pajko <pajko(AT)halom(DOT)u-szeged(DOT)hu>
+				Initial release
+
+*/
+
+
+#include <config.h>
+#if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_LZARI))
+
+#include <linux/stddef.h>
+#include <jffs2/jffs2.h>
+
+
+#define N			4096	/* size of ring buffer */
+#define F			60	/* upper limit for match_length */
+#define THRESHOLD		2	/* encode string into position and length
+					   if match_length is greater than this */
+#define NIL			N	/* index for root of binary search trees */
+
+static unsigned char
+		text_buf[N + F - 1];	/* ring buffer of size N,
+			with extra F-1 bytes to facilitate string comparison */
+
+/********** Arithmetic Compression **********/
+
+/*  If you are not familiar with arithmetic compression, you should read
+		I. E. Witten, R. M. Neal, and J. G. Cleary,
+			Communications of the ACM, Vol. 30, pp. 520-540 (1987),
+	from which much have been borrowed.  */
+
+#define M   15
+
+/*	Q1 (= 2 to the M) must be sufficiently large, but not so
+	large as the unsigned long 4 * Q1 * (Q1 - 1) overflows.  */
+
+#define Q1  (1UL << M)
+#define Q2  (2 * Q1)
+#define Q3  (3 * Q1)
+#define Q4  (4 * Q1)
+#define MAX_CUM (Q1 - 1)
+
+#define N_CHAR  (256 - THRESHOLD + F)
+	/* character code = 0, 1, ..., N_CHAR - 1 */
+
+static unsigned long char_to_sym[N_CHAR], sym_to_char[N_CHAR + 1];
+static unsigned long
+	sym_freq[N_CHAR + 1],  /* frequency for symbols */
+	sym_cum[N_CHAR + 1],   /* cumulative freq for symbols */
+	position_cum[N + 1];   /* cumulative freq for positions */
+
+static void StartModel(void)  /* Initialize model */
+{
+	unsigned long ch, sym, i;
+
+	sym_cum[N_CHAR] = 0;
+	for (sym = N_CHAR; sym >= 1; sym--) {
+		ch = sym - 1;
+		char_to_sym[ch] = sym;  sym_to_char[sym] = ch;
+		sym_freq[sym] = 1;
+		sym_cum[sym - 1] = sym_cum[sym] + sym_freq[sym];
+	}
+	sym_freq[0] = 0;  /* sentinel (!= sym_freq[1]) */
+	position_cum[N] = 0;
+	for (i = N; i >= 1; i--)
+		position_cum[i - 1] = position_cum[i] + 10000 / (i + 200);
+			/* empirical distribution function (quite tentative) */
+			/* Please devise a better mechanism! */
+}
+
+static void UpdateModel(unsigned long sym)
+{
+	unsigned long c, ch_i, ch_sym;
+	unsigned long i;
+	if (sym_cum[0] >= MAX_CUM) {
+		c = 0;
+		for (i = N_CHAR; i > 0; i--) {
+			sym_cum[i] = c;
+			c += (sym_freq[i] = (sym_freq[i] + 1) >> 1);
+		}
+		sym_cum[0] = c;
+	}
+	for (i = sym; sym_freq[i] == sym_freq[i - 1]; i--) ;
+	if (i < sym) {
+		ch_i = sym_to_char[i];    ch_sym = sym_to_char[sym];
+		sym_to_char[i] = ch_sym;  sym_to_char[sym] = ch_i;
+		char_to_sym[ch_i] = sym;  char_to_sym[ch_sym] = i;
+	}
+	sym_freq[i]++;
+	while (--i > 0) sym_cum[i]++;
+	sym_cum[0]++;
+}
+
+static unsigned long BinarySearchSym(unsigned long x)
+	/* 1      if x >= sym_cum[1],
+	   N_CHAR if sym_cum[N_CHAR] > x,
+	   i such that sym_cum[i - 1] > x >= sym_cum[i] otherwise */
+{
+	unsigned long i, j, k;
+
+	i = 1;  j = N_CHAR;
+	while (i < j) {
+		k = (i + j) / 2;
+		if (sym_cum[k] > x) i = k + 1;  else j = k;
+	}
+	return i;
+}
+
+unsigned long BinarySearchPos(unsigned long x)
+	/* 0 if x >= position_cum[1],
+	   N - 1 if position_cum[N] > x,
+	   i such that position_cum[i] > x >= position_cum[i + 1] otherwise */
+{
+	unsigned long i, j, k;
+
+	i = 1;  j = N;
+	while (i < j) {
+		k = (i + j) / 2;
+		if (position_cum[k] > x) i = k + 1;  else j = k;
+	}
+	return i - 1;
+}
+
+static int Decode(unsigned char *srcbuf, unsigned char *dstbuf, unsigned long srclen,
+					unsigned long dstlen)	/* Just the reverse of Encode(). */
+{
+	unsigned long i, r, j, k, c, range, sym;
+	unsigned char *ip, *op;
+	unsigned char *srcend = srcbuf + srclen;
+	unsigned char *dstend = dstbuf + dstlen;
+	unsigned char buffer = 0;
+	unsigned char mask = 0;
+	unsigned long low = 0;
+	unsigned long high = Q4;
+	unsigned long value = 0;
+
+	ip = srcbuf;
+	op = dstbuf;
+	for (i = 0; i < M + 2; i++) {
+		value *= 2;
+		if ((mask >>= 1) == 0) {
+			buffer = (ip >= srcend) ? 0 : *(ip++);
+			mask = 128;
+		}
+		value += ((buffer & mask) != 0);
+	}
+
+	StartModel();
+	for (i = 0; i < N - F; i++) text_buf[i] = ' ';
+	r = N - F;
+
+	while (op < dstend) {
+		range = high - low;
+		sym = BinarySearchSym((unsigned long)
+				(((value - low + 1) * sym_cum[0] - 1) / range));
+		high = low + (range * sym_cum[sym - 1]) / sym_cum[0];
+		low +=       (range * sym_cum[sym    ]) / sym_cum[0];
+		for ( ; ; ) {
+			if (low >= Q2) {
+				value -= Q2;  low -= Q2;  high -= Q2;
+			} else if (low >= Q1 && high <= Q3) {
+				value -= Q1;  low -= Q1;  high -= Q1;
+			} else if (high > Q2) break;
+			low += low;  high += high;
+			value *= 2;
+			if ((mask >>= 1) == 0) {
+				buffer = (ip >= srcend) ? 0 : *(ip++);
+				mask = 128;
+			}
+			value += ((buffer & mask) != 0);
+		}
+		c = sym_to_char[sym];
+		UpdateModel(sym);
+		if (c < 256) {
+			if (op >= dstend) return -1;
+			*(op++) = c;
+			text_buf[r++] = c;
+			r &= (N - 1);
+		} else {
+			j = c - 255 + THRESHOLD;
+			range = high - low;
+			i = BinarySearchPos((unsigned long)
+				(((value - low + 1) * position_cum[0] - 1) / range));
+			high = low + (range * position_cum[i    ]) / position_cum[0];
+			low +=       (range * position_cum[i + 1]) / position_cum[0];
+			for ( ; ; ) {
+				if (low >= Q2) {
+					value -= Q2;  low -= Q2;  high -= Q2;
+				} else if (low >= Q1 && high <= Q3) {
+					value -= Q1;  low -= Q1;  high -= Q1;
+				} else if (high > Q2) break;
+				low += low;  high += high;
+				value *= 2;
+				if ((mask >>= 1) == 0) {
+					buffer = (ip >= srcend) ? 0 : *(ip++);
+					mask = 128;
+				}
+				value += ((buffer & mask) != 0);
+			}
+			i = (r - i - 1) & (N - 1);
+			for (k = 0; k < j; k++) {
+				c = text_buf[(i + k) & (N - 1)];
+				if (op >= dstend) return -1;
+				*(op++) = c;
+				text_buf[r++] = c;
+				r &= (N - 1);
+			}
+		}
+	}
+	return 0;
+}
+
+int lzari_decompress(unsigned char *data_in, unsigned char *cpage_out,
+		      u32 srclen, u32 destlen)
+{
+    return Decode(data_in, cpage_out, srclen, destlen);
+}
+#endif /* ((CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_LZARI)) */

fs/jffs2/compr_lzo.c

@@ -0,0 +1,405 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2004 Patrik Kluba,
+ *		      University of Szeged, Hungary
+ *
+ * For licensing information, see the file 'LICENCE' in the
+ * jffs2 directory.
+ *
+ * $Id: compr_lzo.c,v 1.3 2004/06/23 16:34:39 havasi Exp $
+ *
+ */
+
+/*
+   LZO1X-1 (and -999) compression module for jffs2
+   based on the original LZO sources
+*/
+
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
+
+/*
+   Original copyright notice follows:
+
+   lzo1x_9x.c -- implementation of the LZO1X-999 compression algorithm
+   lzo_ptr.h -- low-level pointer constructs
+   lzo_swd.ch -- sliding window dictionary
+   lzoconf.h -- configuration for the LZO real-time data compression library
+   lzo_mchw.ch -- matching functions using a window
+   minilzo.c -- mini subset of the LZO real-time data compression library
+   config1x.h -- configuration for the LZO1X algorithm
+   lzo1x.h -- public interface of the LZO1X compression algorithm
+
+   These files are part of the LZO real-time data compression library.
+
+   Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
+   All Rights Reserved.
+
+   The LZO library 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.
+
+   The LZO library 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 the LZO library; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   Markus F.X.J. Oberhumer
+   <markus@oberhumer.com>
+*/
+
+/*
+
+	2004-02-16  pajko <pajko(AT)halom(DOT)u-szeged(DOT)hu>
+				Initial release
+					-removed all 16 bit code
+					-all sensitive data will be on 4 byte boundary
+					-removed check parts for library use
+					-removed all but LZO1X-* compression
+
+*/
+
+
+#include <config.h>
+#if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_LZO))
+
+#include <linux/stddef.h>
+#include <jffs2/jffs2.h>
+#include <jffs2/compr_rubin.h>
+
+/* Integral types that have *exactly* the same number of bits as a lzo_voidp */
+typedef unsigned long lzo_ptr_t;
+typedef long lzo_sptr_t;
+
+/* data type definitions */
+#define U32 unsigned long
+#define S32 signed long
+#define I32 long
+#define U16 unsigned short
+#define S16 signed short
+#define I16 short
+#define U8 unsigned char
+#define S8 signed char
+#define I8 char
+
+#define M1_MAX_OFFSET	0x0400
+#define M2_MAX_OFFSET	0x0800
+#define M3_MAX_OFFSET	0x4000
+#define M4_MAX_OFFSET	0xbfff
+
+#define __COPY4(dst,src)  * (lzo_uint32p)(dst) = * (const lzo_uint32p)(src)
+#define COPY4(dst,src)	__COPY4((lzo_ptr_t)(dst),(lzo_ptr_t)(src))
+
+#define TEST_IP		(ip < ip_end)
+#define TEST_OP		(op <= op_end)
+
+#define NEED_IP(x) \
+	    if ((lzo_uint)(ip_end - ip) < (lzo_uint)(x))  goto input_overrun
+#define NEED_OP(x) \
+	    if ((lzo_uint)(op_end - op) < (lzo_uint)(x))  goto output_overrun
+#define TEST_LOOKBEHIND(m_pos,out)    if (m_pos < out) goto lookbehind_overrun
+
+typedef U32 lzo_uint32;
+typedef I32 lzo_int32;
+typedef U32 lzo_uint;
+typedef I32 lzo_int;
+typedef int lzo_bool;
+
+#define lzo_byte		U8
+#define lzo_bytep		U8 *
+#define lzo_charp		char *
+#define lzo_voidp		void *
+#define lzo_shortp		short *
+#define lzo_ushortp		unsigned short *
+#define lzo_uint32p		lzo_uint32 *
+#define lzo_int32p		lzo_int32 *
+#define lzo_uintp		lzo_uint *
+#define lzo_intp		lzo_int *
+#define lzo_voidpp		lzo_voidp *
+#define lzo_bytepp		lzo_bytep *
+#define lzo_sizeof_dict_t		sizeof(lzo_bytep)
+
+#define LZO_E_OK		    0
+#define LZO_E_ERROR		    (-1)
+#define LZO_E_OUT_OF_MEMORY	    (-2)	/* not used right now */
+#define LZO_E_NOT_COMPRESSIBLE	    (-3)	/* not used right now */
+#define LZO_E_INPUT_OVERRUN	    (-4)
+#define LZO_E_OUTPUT_OVERRUN	    (-5)
+#define LZO_E_LOOKBEHIND_OVERRUN    (-6)
+#define LZO_E_EOF_NOT_FOUND	    (-7)
+#define LZO_E_INPUT_NOT_CONSUMED    (-8)
+
+#define PTR(a)				((lzo_ptr_t) (a))
+#define PTR_LINEAR(a)		PTR(a)
+#define PTR_ALIGNED_4(a)	((PTR_LINEAR(a) & 3) == 0)
+#define PTR_ALIGNED_8(a)	((PTR_LINEAR(a) & 7) == 0)
+#define PTR_ALIGNED2_4(a,b)	(((PTR_LINEAR(a) | PTR_LINEAR(b)) & 3) == 0)
+#define PTR_ALIGNED2_8(a,b)	(((PTR_LINEAR(a) | PTR_LINEAR(b)) & 7) == 0)
+#define PTR_LT(a,b)			(PTR(a) < PTR(b))
+#define PTR_GE(a,b)			(PTR(a) >= PTR(b))
+#define PTR_DIFF(a,b)		((lzo_ptrdiff_t) (PTR(a) - PTR(b)))
+#define pd(a,b)			((lzo_uint) ((a)-(b)))
+
+typedef ptrdiff_t lzo_ptrdiff_t;
+
+static int
+lzo1x_decompress (const lzo_byte * in, lzo_uint in_len,
+		  lzo_byte * out, lzo_uintp out_len, lzo_voidp wrkmem)
+{
+	register lzo_byte *op;
+	register const lzo_byte *ip;
+	register lzo_uint t;
+
+	register const lzo_byte *m_pos;
+
+	const lzo_byte *const ip_end = in + in_len;
+	lzo_byte *const op_end = out + *out_len;
+
+	*out_len = 0;
+
+	op = out;
+	ip = in;
+
+	if (*ip > 17)
+	{
+		t = *ip++ - 17;
+		if (t < 4)
+			goto match_next;
+		NEED_OP (t);
+		NEED_IP (t + 1);
+		do
+			*op++ = *ip++;
+		while (--t > 0);
+		goto first_literal_run;
+	}
+
+	while (TEST_IP && TEST_OP)
+	{
+		t = *ip++;
+		if (t >= 16)
+			goto match;
+		if (t == 0)
+		{
+			NEED_IP (1);
+			while (*ip == 0)
+			{
+				t += 255;
+				ip++;
+				NEED_IP (1);
+			}
+			t += 15 + *ip++;
+		}
+		NEED_OP (t + 3);
+		NEED_IP (t + 4);
+		if (PTR_ALIGNED2_4 (op, ip))
+		{
+			COPY4 (op, ip);
+
+			op += 4;
+			ip += 4;
+			if (--t > 0)
+			{
+				if (t >= 4)
+				{
+					do
+					{
+						COPY4 (op, ip);
+						op += 4;
+						ip += 4;
+						t -= 4;
+					}
+					while (t >= 4);
+					if (t > 0)
+						do
+							*op++ = *ip++;
+						while (--t > 0);
+				}
+				else
+					do
+						*op++ = *ip++;
+					while (--t > 0);
+			}
+		}
+		else
+		{
+			*op++ = *ip++;
+			*op++ = *ip++;
+			*op++ = *ip++;
+			do
+				*op++ = *ip++;
+			while (--t > 0);
+		}
+	      first_literal_run:
+
+		t = *ip++;
+		if (t >= 16)
+			goto match;
+
+		m_pos = op - (1 + M2_MAX_OFFSET);
+		m_pos -= t >> 2;
+		m_pos -= *ip++ << 2;
+		TEST_LOOKBEHIND (m_pos, out);
+		NEED_OP (3);
+		*op++ = *m_pos++;
+		*op++ = *m_pos++;
+		*op++ = *m_pos;
+
+		goto match_done;
+
+		while (TEST_IP && TEST_OP)
+		{
+		      match:
+			if (t >= 64)
+			{
+				m_pos = op - 1;
+				m_pos -= (t >> 2) & 7;
+				m_pos -= *ip++ << 3;
+				t = (t >> 5) - 1;
+				TEST_LOOKBEHIND (m_pos, out);
+				NEED_OP (t + 3 - 1);
+				goto copy_match;
+
+			}
+			else if (t >= 32)
+			{
+				t &= 31;
+				if (t == 0)
+				{
+					NEED_IP (1);
+					while (*ip == 0)
+					{
+						t += 255;
+						ip++;
+						NEED_IP (1);
+					}
+					t += 31 + *ip++;
+				}
+
+				m_pos = op - 1;
+				m_pos -= (ip[0] >> 2) + (ip[1] << 6);
+
+				ip += 2;
+			}
+			else if (t >= 16)
+			{
+				m_pos = op;
+				m_pos -= (t & 8) << 11;
+
+				t &= 7;
+				if (t == 0)
+				{
+					NEED_IP (1);
+					while (*ip == 0)
+					{
+						t += 255;
+						ip++;
+						NEED_IP (1);
+					}
+					t += 7 + *ip++;
+				}
+
+				m_pos -= (ip[0] >> 2) + (ip[1] << 6);
+
+				ip += 2;
+				if (m_pos == op)
+					goto eof_found;
+				m_pos -= 0x4000;
+			}
+			else
+			{
+
+				m_pos = op - 1;
+				m_pos -= t >> 2;
+				m_pos -= *ip++ << 2;
+				TEST_LOOKBEHIND (m_pos, out);
+				NEED_OP (2);
+				*op++ = *m_pos++;
+				*op++ = *m_pos;
+
+				goto match_done;
+			}
+
+			TEST_LOOKBEHIND (m_pos, out);
+			NEED_OP (t + 3 - 1);
+			if (t >= 2 * 4 - (3 - 1)
+			    && PTR_ALIGNED2_4 (op, m_pos))
+			{
+				COPY4 (op, m_pos);
+				op += 4;
+				m_pos += 4;
+				t -= 4 - (3 - 1);
+				do
+				{
+					COPY4 (op, m_pos);
+					op += 4;
+					m_pos += 4;
+					t -= 4;
+				}
+				while (t >= 4);
+				if (t > 0)
+					do
+						*op++ = *m_pos++;
+					while (--t > 0);
+			}
+			else
+
+			{
+			      copy_match:
+				*op++ = *m_pos++;
+				*op++ = *m_pos++;
+				do
+					*op++ = *m_pos++;
+				while (--t > 0);
+			}
+
+		      match_done:
+			t = ip[-2] & 3;
+
+			if (t == 0)
+				break;
+
+		      match_next:
+			NEED_OP (t);
+			NEED_IP (t + 1);
+			do
+				*op++ = *ip++;
+			while (--t > 0);
+			t = *ip++;
+		}
+	}
+	*out_len = op - out;
+	return LZO_E_EOF_NOT_FOUND;
+
+      eof_found:
+	*out_len = op - out;
+	return (ip == ip_end ? LZO_E_OK :
+		(ip <
+		 ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
+
+      input_overrun:
+	*out_len = op - out;
+	return LZO_E_INPUT_OVERRUN;
+
+      output_overrun:
+	*out_len = op - out;
+	return LZO_E_OUTPUT_OVERRUN;
+
+      lookbehind_overrun:
+	*out_len = op - out;
+	return LZO_E_LOOKBEHIND_OVERRUN;
+}
+
+int lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
+		      u32 srclen, u32 destlen)
+{
+	lzo_uint outlen = destlen;
+	return lzo1x_decompress (data_in, srclen, cpage_out, &outlen, NULL);
+}
+
+#endif /* ((CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_LZO)) */

fs/jffs2/jffs2_1pass.c

@@ -274,7 +274,13 @@ static char *compr_names[] = {
 	"RUBINMIPS",
 	"COPY",
 	"DYNRUBIN",
-	"ZLIB"
+	"ZLIB",
+#if defined(CONFIG_JFFS2_LZO)
+	"LZO",
+#endif
+#if defined(CONFIG_JFFS2_LZARI)
+	"LZARI",
+#endif
 };
 
 /* Spinning wheel */
@@ -583,6 +589,16 @@ jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest)
 				case JFFS2_COMPR_ZLIB:
 					ret = zlib_decompress(src, lDest, jNode->csize, jNode->dsize);
 					break;
+#if defined(CONFIG_JFFS2_LZARI)
+				case JFFS2_COMPR_LZARI:
+					ret = lzari_decompress(src, lDest, jNode->csize, jNode->dsize);
+					break;
+#endif
+#if defined(CONFIG_JFFS2_LZO)
+				case JFFS2_COMPR_LZO:
+					ret = lzo_decompress(src, lDest, jNode->csize, jNode->dsize);
+					break;
+#endif
 				default:
 					/* unknown */
 					putLabeledWord("UNKOWN COMPRESSION METHOD = ", jNode->compr);

include/configs/NC650.h

@@ -122,6 +122,7 @@
 				CFG_CMD_DHCP	| \
 				CFG_CMD_I2C	| \
 				CFG_CMD_NAND	| \
+				CFG_CMD_JFFS2	| \
 				CFG_CMD_NFS	| \
 				CFG_CMD_SNTP	)
 
@@ -398,5 +399,10 @@
 #define	BOOTFLAG_COLD	0x01		/* Normal Power-On: Boot from FLASH	*/
 #define BOOTFLAG_WARM	0x02		/* Software reboot			*/
 
+#define CONFIG_JFFS2_NAND 1			/* jffs2 on nand support */
+#define CONFIG_JFFS2_NAND_DEV 0			/* nand device jffs2 lives on */
+#define CONFIG_JFFS2_NAND_OFF 0			/* start of jffs2 partition */
+#define CONFIG_JFFS2_NAND_SIZE 4*1024*1024	/* size of jffs2 partition */
+#define NAND_CACHE_PAGES 16			/* size of nand cache in 512 bytes pages */
 
 #endif	/* __CONFIG_H */

include/configs/PPChameleonEVB.h

@@ -772,7 +772,7 @@
 #define CONFIG_JFFS2_NAND 1			/* jffs2 on nand support */
 #define CONFIG_JFFS2_NAND_DEV 0			/* nand device jffs2 lives on */
 #define CONFIG_JFFS2_NAND_OFF 0			/* start of jffs2 partition */
-#define CONFIG_JFFS2_NAND_SIZE 2*1024*1024	/* size of jffs2 partition */
+#define CONFIG_JFFS2_NAND_SIZE 4*1024*1024	/* size of jffs2 partition */
 #define NAND_CACHE_PAGES 16			/* size of nand cache in 512 bytes pages */
 
 #endif	/* __CONFIG_H */

include/jffs2/jffs2.h

@@ -65,7 +65,9 @@
 #define JFFS2_COMPR_COPY	0x04
 #define JFFS2_COMPR_DYNRUBIN	0x05
 #define JFFS2_COMPR_ZLIB	0x06
-#define JFFS2_NUM_COMPR		7
+#define JFFS2_COMPR_LZO		0x07
+#define JFFS2_COMPR_LZARI	0x08
+#define JFFS2_NUM_COMPR		9
 
 /* Compatibility flags. */
 #define JFFS2_COMPAT_MASK 0xc000      /* What do to if an unknown nodetype is found */
@@ -193,14 +195,22 @@ u32 jffs2_1pass_ls(struct part_info *part,const char *fname);
 u32 jffs2_1pass_load(char *dest, struct part_info *part,const char *fname);
 u32 jffs2_1pass_info(struct part_info *part);
 
-void rtime_decompress(unsigned char *data_in, unsigned char *cpage_out, u32
-	srclen, u32 destlen);
-void rubin_do_decompress(unsigned char *bits, unsigned char *in, unsigned char
-	*page_out, __u32 destlen);
+void rtime_decompress(unsigned char *data_in, unsigned char *cpage_out,
+		u32 srclen, u32 destlen);
+void rubin_do_decompress(unsigned char *bits, unsigned char *in,
+		unsigned char *page_out, __u32 destlen);
 void dynrubin_decompress(unsigned char *data_in, unsigned char *cpage_out,
-	unsigned long sourcelen, unsigned long dstlen);
+		unsigned long sourcelen, unsigned long dstlen);
 long zlib_decompress(unsigned char *data_in, unsigned char *cpage_out,
-	                      __u32 srclen, __u32 destlen);
+		__u32 srclen, __u32 destlen);
+#if defined(CONFIG_JFFS2_LZARI)
+int lzari_decompress(unsigned char *data_in, unsigned char *cpage_out,
+		u32 srclen, u32 destlen);
+#endif
+#if defined(CONFIG_JFFS2_LZO)
+int lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
+		u32 srclen, u32 destlen);
+#endif
 
 char *mkmodestr(unsigned long mode, char *str);
 #endif /* __LINUX_JFFS2_H__ */