[OpenBIOS] PReP PowerPC "emulation"

Mark Cave-Ayland mark.cave-ayland at siriusit.co.uk
Sun Sep 26 14:12:35 CEST 2010

Andreas Färber wrote:

> The following patch does wonders, it changes the ppc config to match 
> sparc64 wrt ISO9660:

Ah wait a second - I think I know what's happening here. Several months 
ago I found a couple of bugs in fs/iso9660/* related to loading files 
from CD. I seem to recall:

i) The filenames all had to be in capital letters
ii) Sometimes I had to put an extra . at the end

I found these bugs by stepping through iso9660_opendir() under gdb. So 
that is likely what's happening here - OpenBIOS is unable to locate the 
file from the filesystem at boot time.

> `dir cd:,\ppc\chrp` is unsupported in that configuration though.

Yeah because while the grubfs iso9660 implementation doesn't have the 
case-sensitivity/period bugs, unfortunately the grub API doesn't provide 
a function to list files within a directory.

If you could provide a patch to fix these bugs in fs/iso9660/* then I 
would definitely apply it :)



Mark Cave-Ayland - Senior Technical Architect
PostgreSQL - PostGIS
Sirius Corporation plc - control through freedom
t: +44 870 608 0063

Sirius Labs: http://www.siriusit.co.uk/labs

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