RE: [BULK] RE: [LinuxBIOS] FYI: AMD support for cache as ram.

[YhLu]

For s2895, with CAS,
-rw-r--r--    1 root     root        49930 Jun  3 17:51 linuxbios_ram.nrv2b
-rw-r--r--    1 root     root         5688 Jun  3 17:51 crt0.o
-rw-r--r--    1 root     root        30276 Jun  3 17:51 init.o (include
auto.o and failover.o and memcpy.o) 
-rw-r--r--    1 root     root        16006 Jun  3 17:51 init.o.gz
if the init.o can be compressed too, you can spare 14k.

YH
> -----Original Message-----
> From: [e-mail] [mailto:[e-mail]] 
> Sent: Friday, June 03, 2005 6:05 PM
> To: Ronald G. Minnich
> Cc: YhLu; LinuxBIOS
> Subject: Re: [BULK] RE: [LinuxBIOS] FYI: AMD support for cache as ram.
>
> "Ronald G. Minnich"  writes:
> > On Fri, 3 Jun 2005, YhLu wrote:
> > > but the cache only 64k, is it enough?
> >
> > I think it is.
>
> Currently we use 96 bytes I think we can fit it all in 64K.
> We might be able to run the normal C portion of LinuxBIOS if 
> we decompressed it...
>
> Heck you can even run a small Unix in 64K.....
>
> Eric

[BULK] RE: [LinuxBIOS] FYI: AMD support for cache as ram.

YhLu  writes:
> For s2895, with CAS,
> -rw-r--r--    1 root     root        49930 Jun  3 17:51 linuxbios_ram.nrv2b
> -rw-r--r--    1 root     root         5688 Jun  3 17:51 crt0.o
> -rw-r--r--    1 root     root        30276 Jun  3 17:51 init.o (include
> auto.o and failover.o and memcpy.o) 
> -rw-r--r--    1 root     root        16006 Jun  3 17:51 init.o.gz
> if the init.o can be compressed too, you can spare 14k.

certainly some significant parts of init.o cannot be compressed.
You need to get at least far enough to do the cache as ram thing.

Currently the cpu designers Intel and AMD do not support
running out of the cache so that is an issue.

However the size of a .o rarely has a strong correspondence to
actual code size.  Use size to find out the size of the .text
and .data segments.

Eric