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- /*
- * 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
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