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openwrt-xburst/target/linux/adm5120-2.6/image/lzma-loader/src
History
juhosg 442a48289d [adm5120] board specific fixes 
* fix detection of RB-133C, thanks to Christophe Lucas
 * fix detection of RB-153
 * add support for WP54G-WRT to the lzma-loader
 * fix adm5120_mtd.c for WP54G-WRT in 7.07
 * now it's ready for the release of 7.07


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8128 3c298f89-4303-0410-b956-a3cf2f4a3e73
2007-07-23 13:33:56 +00:00
..
board.c [adm5120] lzma-loader improvements 2007-07-15 15:02:38 +00:00
config.h [adm5120] board specific fixes 2007-07-23 13:33:56 +00:00
decompress.c [adm5120] lzma-loader improvements 2007-07-15 15:02:38 +00:00
head.S Add board specific code, autodetect the kernel, fixes #1707, thanks Gabor Juhos 2007-05-30 10:35:27 +00:00
loader.lds Resync adm5120 kernel config, lzma-loader fixes from Gabor 2007-06-08 12:58:55 +00:00
lzma-data.lds Resync adm5120 kernel config, lzma-loader fixes from Gabor 2007-06-08 12:58:55 +00:00
LzmaDecode.c [adm5120] lzma-loader improvements 2007-07-15 15:02:38 +00:00
LzmaDecode.h [adm5120] lzma-loader improvements 2007-07-15 15:02:38 +00:00
Makefile [adm5120] lzma-loader improvements 2007-07-15 15:02:38 +00:00
printf.c [adm5120] lzma-loader improvements 2007-07-15 15:02:38 +00:00
printf.h [adm5120] lzma-loader improvements 2007-07-15 15:02:38 +00:00
README Preliminary ADM5120 support, marked as broken 2007-03-19 17:34:37 +00:00

README 

/*
 * LZMA compressed kernel decompressor for bcm947xx boards
 *
 * Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

The code is intended to decompress kernel, being compressed using lzma utility
build using 7zip LZMA SDK. This utility is located in the LZMA_Alone directory

decompressor code expects that your .trx file consist of three partitions: 

1) decompressor itself (this is gziped code which pmon/cfe will extract and run
on boot-up instead of real kernel)
2) LZMA compressed kernel (both streamed and regular modes are supported now)
3) Root filesystem

Please be sure to apply the following patch for use this new trx layout (it will
allow using both new and old trx files for root filesystem lookup code)

--- linuz/arch/mips/brcm-boards/bcm947xx/setup.c        2005-01-23 19:24:27.503322896 +0300
+++ linux/arch/mips/brcm-boards/bcm947xx/setup.c        2005-01-23 19:29:05.237100944 +0300
@@ -221,7 +221,9 @@
                /* Try looking at TRX header for rootfs offset */
                if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
                        bcm947xx_parts[1].offset = off;
-                       if (le32_to_cpu(trx->offsets[1]) > off)
+                       if (le32_to_cpu(trx->offsets[2]) > off)
+                               off = le32_to_cpu(trx->offsets[2]);
+                       else if (le32_to_cpu(trx->offsets[1]) > off)
                                off = le32_to_cpu(trx->offsets[1]);
                        continue;
                }


Revision history:
	0.02	Initial release
	0.03	Added Mineharu Takahara <mtakahar@yahoo.com> patch to pass actual
		output size to decoder (stream mode compressed input is not 
		a requirement anymore)
	0.04	Reordered functions using lds script