Copy_and_run is used by CAR and included in cache_as_ram_auto.c and compiled with gcc. That should be changed to use lzma easily.
CONFIG_COMPRESSED_ROM_STREAM is used for pay load. --- stream_init will do the uncompressed. ( stream_init is in ram)
CONFIG_COMPRESS is for linuxbios_ram.rom --- copy_and_run will do the uncompress. ( copy_and_run is ROM, and used ram as stack and local variable)
You may create one file only that is corresponding to lib/nrv2b.c...
YH
-----Original Message----- From: linuxbios-bounces@linuxbios.org [mailto:linuxbios-bounces@linuxbios.org] On Behalf Of Carl-Daniel Hailfinger Sent: Monday, May 22, 2006 12:29 PM To: yhlu Cc: Stefan Reinauer; LinuxBIOS Subject: Re: [LinuxBIOS] selection of compression algorithm
On 5/22/06, Stefan Reinauer stepan@coresystems.de wrote:
We never actually compile nrv2b with romcc, do we? At the point we
run
nrv2b ram has to be enabled anyways - we uncompress the code
somewhere.
So our limits are far bigger than that.
yhlu wrote:
in crt0.s, and it is used to uncompress linuxbios_ram when using
romcc.
You mean copy_and_run() is compiled with romcc? Can we change that?
What's the difference between CONFIG_COMPRESSED_ROM_STREAM and CONFIG_COMPRESS? Can we use lzma compression for both?
Regards, Carl-Daniel