message resent on the list because an accident.
On Wednesday 05 January 2005 17:52, you wrote: > On Jan 5, 2005, at 10:18 AM, Philippe Guyot wrote: > > On Wednesday 05 January 2005 17:08, Sven Luther wrote: > >> On Wed, Jan 05, 2005 at 09:45:13AM -0600, Hollis Blanchard wrote: > >>> The size of that partition depends on firmware limitations. I have > >>> definitely seen reports of systems not booting when the PReP boot > >>> partition was too large. I think on some systems that has even > >>> happened > >>> at 8MB. > >> > >> Is the problem really the size of the partition, or the space used by > >> the > >> kernel. I mean we could make a 100MB partition at start, and since we > >> just > >> dd the kernel to it, the kernel would be found at the start of the > >> partition, and the firmware probably doesn't care about the real size > >> of > >> the partition, as long as it can access all the kernel data we dded > >> to it, > >> no ? > > > > I agree, see the IEEE P1275 on solinno's site. OF determines the load > > image > > length and transfers only that. I was able to verify that by dumping > > storage > > after a "load" when debugging boot process. > > Are you specifically talking about booting from a PReP partition and > not a floppy disk or netboot? Did you dump the bytes from the disk just > after the kernel and see if they were also present in memory? I saw there were 0x00 after the kernel....may be a mistake ? I'll try again. > > I have no doubt that OF will correctly load an ELF file, but a PReP > boot partition does not contain an ELF file. Yes, but the layout of the partition, described in docs pointed below allow OF to do this way. > > >> Do we have some documentation of the firmware limitations ? > > > > Yes, on solinnos's site. > > That page (http://www.solinno.co.uk/7043-140/getstarted.php) doesn't > mention any restrictions on the size of the PReP boot partition, so > it's clearly not a complete list. :) just have a look on http://www.solinno.co.uk/7043-140/files/docs/ specially in prep/srp1-103 chapter 5 Felipe
