[LinuxBIOS] Question about how to add data at fixed address before POST

[AlexHuang]

Dear All,

I would like to port a linuxbois on some platform. Before the system into
the POST, hardware will read data at address 0xffffd. Where and How can I do
this data assignment??

Thanks for your help.

Alex

[LinuxBIOS] Question about how to add data at fixed address before POST

[Stefan Reinauer]

Dear Alex!

* AlexHuang  [070424 10:53]:
> I would like to port a linuxbois on some platform.

Welcome on board.
> Before the system into
> the POST, hardware will read data at address 0xffffd. Where and How can I do
> this data assignment??
>
> Thanks for your help.

Check mainboards/tyan/s2895/Config.lb:

##
## ROMSTRAP table for CK804
##
if HAVE_FAILOVER_BOOT
    if USE_FAILOVER_IMAGE
        mainboardinit southbridge/nvidia/ck804/romstrap.inc
        ldscript /southbridge/nvidia/ck804/romstrap.lds
    end
else
    if USE_FALLBACK_IMAGE
        mainboardinit southbridge/nvidia/ck804/romstrap.inc
        ldscript /southbridge/nvidia/ck804/romstrap.lds
    end
end

It will place data at 0xfffe0, but this should be possible likewise for 
0xfd.

What platform ist this?

Stefan

[LinuxBIOS] Question about how to add data at fixed address before POST

[yhlu]

Alex, may need have its own reset16.inc and reset16.lds in his chipset
dir, and MB Config could use those instead of that in /cpu/x86/16bit/.

YH