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YAMON and decompression from flash

Subject: YAMON and decompression from flash
From: Florian FAINELLI <>
Date: Wed, 26 Jul 2006 10:37:53 +0200
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Hi all,

I want to use the generic LZMA decompressor we use in OpenWrt with an MTX-1 
board. Currently, decompressing from RAM works fine. My problems are coming 
from decompression from flash.

Basically, I used the same parameters for flash decompression as for RAM 
decompression (kernel entry point, ram start address, ram size), except that 
I ran an "--adjust-vma" with the same parameters as the zlib decompressor has 
in the Makefile (patch can be found here :

I think I am missing some ideas/concepts, and don't know why it works for 
zlib, and not for lzma (apart from the fact that the two decompressor may not 
work the same way).

Thank you very much in advance for any suggestion. If it is relevant I will 
post the exception handling YAMON generates while decompressing from flash.
Cordialement, Florian Fainelli
5, rue Charles Fourier
Chambre 1511
91011 Evry
(+33) 01 60 76 64 86
(+33) 06 09 02 64 95
Association MiNET
Institut National des Télécommunications

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