On 3/18/06, Sven Luther <sl at bplan-gmbh.de> wrote: > > On Sat, Mar 18, 2006 at 11:52:12AM -0600, Noah yan wrote: > > On 3/18/06, Sven Luther <sl at bplan-gmbh.de> wrote: > > > > > > On Mon, Mar 13, 2006 at 01:56:27PM -0800, Noah Yan wrote: > > > > Hi, All, > > > > > > > > It has been so quiet (which is wired) in recent several weeks here. > > > Hopefully my update may stir something up. > > > > > > > > The inetboot, which allow a diskless system to boot over NFS root is > now > > > functional. It can mount the root fs from the NFS server, load an elf > > > file(kernel), exitto it and let it go. I upload some camer shot (seems > the > > > PowerMac G4 does not have serial port) in > > > http://polaris.blastwave.org/attachment/wiki/YanyhDiary/1.GIF, > > > > http://polaris.blastwave.org/attachment/wiki/YanyhDiary/2.GIF > > > > > > Hi Noah, ... > > > > > > Next week i aim on working on duplicating what you did on the > pegasos/ODW > > > machines. I can still not build opensolaris myself though. > > > > > > > In brief, the inetboot bootstrap process is as follow: > > > > 1. openfirmware load the inetboot from tftp server and give control > to > > > inetboot > > > > > > is a pre-compiled inetboot available somewhere ? And did you have to > make > > > special (mac-obp specific ?) modifications of it ? > > > > > > I put one on > > http://polaris.blastwave.org/attachment/wiki/YanyhDiary/inetboot.elf > > let me know your results (take some short :)). Thanks > > Ok, thanks. > > > no special modification for mac-obp, since most of the code are > borrowed or > > started from the cooresponding SPARC vesion. but there may be some > hidden > > ones that we donot know. > > Well, as i will work on the pegasos OF/obp, i probably will discover any > such > rather quickly. > > > > 2. inetboot initialize memory list > > > > 3. sends rarp request to get the host ip > > > > > > would this work with a bootp/dhcp system instead too ? > > > > > > I did not test dhcp. but I think not, it uses something called "dhcp > cache > > (?)" in the firmware in the original sparc code. > > I suppose it will need to install a rarp server then, or try the dhcp > code. > > The pegasos OF can get an ip address by dhcp, not sure if this one can be > forwarded to the booted system or not. Maybe it is part of the > chosen/bootpath. > > > > 4. sends whoami and getfile bootparamd rpc requests to get info for > nfs > > > server and remote root > > > > 5. nfs-mount root fs > > > > > > mmm, this supposes there is an root filesystem available too, right ? > > > > > > yes. check the my diary for how to start nfsd, rarpd and bootparamd > daemons. > > Ok. I was more worried with the actual content of the nfs root, since i > don't > have a setup able to build opensolaris. Maybe you (or someone else) could > make > a minimal root filesystem available too ?
Hi Sven, I forget to mention this. Currently, the root file system is just an exported directory, nothing in it. You can put an ELF binary (as kernel) that can bootstrap itself, such as grub, or linux kernel, or even the inetboot.elf itself. When the inetboot.elf is loaded and runs, it will prompt to ask for the kernel (default is ppc/unix), just input the name of the file that is put in the nfs root (be sure to start with "/"). and the inetboot will load it and transfer control to it. Noah > > 6. read unix over nfs and transfer control to it > > > > > > > > There is no joke at all for even this small task and there are so > many > > > details that requires lots of doc/code reading and debuging (I even > begin to > > > lean Forth now :o). My informal diary records those major changes > which > > > could help if anybody is interested in this. > > > > > > > > This time, I do need to stop, synchronize and clean my code with the > > > main trunk. So give me some time to check in my code :) > > > > > > How did you progress on this this week ? > > > > > > not very much. But I will try to make this happen around next week or > two, > > both the source and simple docs. > > Cool. > > Friendly, > > Sven Luther > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/powerpc-discuss/attachments/20060318/1151a2cb/attachment.html>
