[OLPC-devel] Re: Not so good news (Was: good news)

[Carl-Daniel U. Hailfinger]

Stefan Reinauer wrote:
> * Carl-Daniel Hailfinger wrote:
>
> > What we need from you is a way to use nrv2b compressed ELF images as
> > payload. Please don't say that is impossible.
>  
> CONFIG_COMPRESSED_ROM_STREAM does exactly that. 
> 
> You need to give it an uncompressed payload since it does compression on
> its own.

ARGH! Now that indeed explains things very well.

Attached is a patch to make LinuxBIOS support precompressed payloads. While the LinuxBIOS build system can compress payloads on its own, the OLPC build system benefits from delivering a precompressed (and size-checked) payload.

Although the patch modifies targets/olpc/rev_a/Config.1M.lb this has no effect on current OLPC buildrom because it checks out an earlier revision of LinuxBIOS. So it should be a safe to apply.

As a reply to this message, I'll post the necessary OLPC buildrom changes to make use of the new infrastructure.

Regards,
Carl-Daniel
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