[LinuxBIOS] selection of compression algorithm

[Stefan Reinauer]

* yhlu <yinghailu at gmail.com> [060523 11:26]:
> I may only want to lzma for payload if we can sqush tiny kernel and
> initrd in 1M with LinuxBIOS.
 
Thats why we all would want to see this, yes. But using nrv2b if lzma is
so much more efficient makes not much sense in any other case either.

> I may need to use nrv2b for linuxbios_ram.rom and
> linuxbios_ap_code.rom. 

 * What's linuxbios_ap_code.rom? 

> These too can share the code in car stage. and
> code in cache can not have too much space for lzma properties array.

When we're uncompressing, we do have memory. So cache sizes are no 
restriction at this point anymore.

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