On Fri, 2003-02-14 at 22:54, Orion Buckminster Montoya wrote: > But when you get to the step of partitioning/initializing/mounting > your hard drive, the kernel you get from > http://http.us.debian.org/debian/dists/woody/main/disks-powerpc/current/new-powermac/ > will tell you "No hard disks were found." If you look at /dev/hda > you'll see that it's your optical drive. The problem is that this > disk is ATA-100, and the current kernels are only for ATA-66. I had > to build a kernel that supported ATA-100, but I still don't know what > chipset this machine is using (anybody?) so I just added them all -- > not an elegant solution, but it works. It makes for a 3.8 MB kernel > image, but you can download it at > http://valla.uchicago.edu/ppc/vmlinux-pbg412.bz2 (you probably need to > bunzip2 it for it to boot).
It's Apple's "intrepid" chipset, which is UniNorth2 north bridge and KeyLargo IO ASIC merged in one chip. They kept U2 ATA/100 and removed KL ATA/66. The driver for it is still good old ide-pmac that is "Builtin PowerMac IDE support" CONFIG_BLK_DEV_IDE_PMAC in kernel config. You can remove all other drivers ;) > So put my kernel (or your own-built kernel with the right ATA chipset > support, as long as you tell me what it is) in /vmlinux on your OS X > partition, reboot with cmd+opt+O+F, boot hd:3,yaboot or whatever is > right (you could tell me this as well, if people are going to refer to > my web page or this email thread). From there things should be okay > -- the hard drive is /dev/hdc, and you can read the packages off the > CD just fine, even if you can't boot from it. After you install, you > should boot to OS X, change OSX:/yaboot.conf to point at your GNU root > partition and remove the line about root.bin, then reboot with > hd:3,yaboot or whatever (still from the OS X partition). > > My kernel has support for cpu frequency scaling via /proc/cpufreq -- > and now when it boots it claims to be at 53 MHz. You can get this up > to the proper 867 MHz by doing Are you sure of the 53Mhz bit ? Isn't it 533 ? > echo -n "1000000:2000000:performance" > /proc/cpufreq > but in practice I haven't noticed this making much of a difference -- > I mean, the machine isn't actually running at 53 MHz. If you're > building this for your own kernel you need the patch that benh sent: > http://lists.debian.org/debian-powerpc/2003/debian-powerpc-200302/msg00106.html > (this works great). Well... There might be a bigger problem if the kernel reports 53Mhz on boot (that means upon frequency switch, the kernel internal timing delays may be incorrectly adjusted). Please edit arch/ppc/platforms/pmac_cpufreq.c Then, near the top of the file, change #undef DEBUG_FREQ to #define DEBUG_FREQ Recompile, then do a couple of frequency switches and send me the resulting dmesg log Thanks, Ben. > And this message > http://lists.debian.org/debian-powerpc/2003/debian-powerpc-200302/msg00094.html > is useful, since it sends you here: > http://penguinppc.org/~daniels/README for XFree86, which works, but > only once per boot -- if you exit XFree, the screen goes black and you > pretty much have to reboot over ssh. > > You should install the newest version of yaboot from > http://penguinppc.org/projects/yaboot , because it's supposed work > with our hardware -- though it still isn't working for me to boot > directly into GNU/Linux without going through Open Firmware. I might > be making some stupid mistake here, even though I haven't had this > kind of trouble with yaboot before. When I try to boot to GNU by > default I get a folder with a question mark, then a folder with a > finder-face on it, then it boots OS X. It also doesn't seem to be > recognizing "enablecdboot" or "enableofboot" but, again, I might be > the one with the problem. But so I still boot Open Firmware and do > boot hd:4,yaboot to boot to GNU without going through OS X (hd:4 being > my yaboot bootstrap partition.) hd:3,yaboot also works, since both > kernels are identical for me right now. > > Sound and DVD-playing work just as in the iBook. APM correctly shows > battery level. I still haven't tried burning a CD or a DVD. > > I'd like it if I could help in some way with getting pmud and Airport > Extreme working, but I don't know what I can do to help. I'm asking a > question, there. > > Hope this helps, > > O. -- Benjamin Herrenschmidt <[EMAIL PROTECTED]>
