mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-08 05:28:04 +02:00
17c7b6c3fd
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73
56 lines
2.4 KiB
Plaintext
56 lines
2.4 KiB
Plaintext
/*
|
|
* 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
|