[Clfs-dev] Seeking help to boot PowerPC64-Multilib

[John Frankish]

At 19:23 15-11-08, you wrote:
>On Sat, Nov 15, 2008 at 01:19:40PM +0400, John Frankish wrote: > At 
>02:01 15-11-08, you wrote: > >On a mac, yaboot.conf is copied to the 
>apple_bootstrap partition by > >ybin, and is read during the boot 
>(bottom of Appendix E in the ppc64 > >book).  You quite clearly 
>don't have this sort of partitioning. > >Google found that booting 
>on ps3 apparently used to need kboot, not > >yaboot.  Unclear if 
>that was just for the initial boot.  I wonder if > >ydl's version of 
>yaboot has been patched for the ps3 (check the > >source rpms). ? 
>'man yaboot.conf' on your ydl system is probably the > >best I can 
>suggest.  Perhaps it specifically mentions the ps3 > >?  Maybe try 
>'ofpath /dev/ps3da2' Even though your mailer is doing funny things 
>to the formatting, at least in replies, please read that paragraph, 
>and try my suggestions. (edit: at least try the ofpath command). > > 
>I could see that I could do this prior to compiling/installing the > 
>kernel, which would install the clfs kernel alongside the ydl 
>kernel > in /boot - but I'm kind of lost as to how to set things up 
>on reboot > so that the clfs kernel loads (effectively from 
>/dev/ps3da1) and > /clfs/sbin/pre-init gets called from /dev/ps3da2 
>?? > > John > From past experience, I know that trying to find ydl 
>source rpms is about as easy as finding hens' teeth, but a search of 
>their website presented me with 
>http://us.fixstars.com/products/ydl/apps.shtml which suggests that 
>yaboot is NOT the correct boot tool. Google, on the web rather than 
>the ydl site, was a little more helpful.  If you are on ydl 6, try 
>ftp://ftp.yellowdoglinux.com/pub/yellowdog/releases/yellowdog-6.0/SRPMS/ 
>I said earlier that I didn't understand the 'mountpoint' line. Maybe 
>I've forgotten something, because ydl's yaboot has a (rh, or fedora) 
>patch to "Allow mntpoint to be more than one directory into the 
>partition as long as magicboot and nvram are not being used" 
>(compare the warning in the book's yaboot.conf: # For all images, 
>the pathname is relative to the filesystem # on which they are 
>situated and can include at most one # directory - of course, we do 
>specify magicboot, and use nvram on a mac). BUT, I still don't think 
>you use yaboot to boot from ps3, or else you don't use it in the way 
>I expect.  On a mac, and probably on pSeries and pegasos, we do it 
>like this: 1. add new kernel to yaboot.conf 1A. if it is on a 
>different partition, use ofpath to get the Open Firmware path to it 
>(image=/ht at 0,f2000000/pci at 3/k2-sata-root at c/k2-sata at 0/disk at 0:9,/boot/clfskernel-2.6.26.5) 
>for one of mine, on /dev/sda9 2. run ybin to write some OF (Forth) 
>code plus the contents of yaboot.conf to the bootstrap partition and 
>update the nvram. If you *are* using yaboot, please explain how you 
>use it.  Please do NOT try using steps '1' and '2' above, unless you 
>already use them.
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I'm using ydl-6 on the ps3 which definitely uses yaboot (maybe the 
confusion comes from earlier versions of ydl which may have used 
something else on the ps3). If I compile a new kernel in ydl-6, ybin 
seems to be automatically invoked and yaboot.conf is automatically 
updated. I can also modify yaboot.conf in ydl-6 and have the changes 
(eg change the default kernel) take effect for the next boot with or 
without invoking ybin...

I checked the yaboot/yaboot.conf man pages in ydl-6 - not much to see 
except that "init=" does not exist as a parameter to pass 
/clfs/sbin/pre-init, maybe it could be passed as "append="? The other 
thing to note (as you mention above) is that it looks like I need the 
full openfiremware path to the clfs image on the partition. I did not 
know about "ofpath" so I guess this is the next thing to try.

Thanks for the help with this.

John