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Re: new installer



On Thu, Oct 02, 2003 at 10:19:58AM +0200, Sven Luther wrote:
> > a .coff kernel won't autoboot, the user would have to manually get
> > into OpenFirmware and boot it explicity.
> 
> Ok, the .coff is for manual installation using the OF. 

yes which is unprecedented for oldworlds.

> > the current miboot boot floppies require the vmlinux binary, which may
> > be gzipped.
> 
> Mmm, i am lost here, i own no powermac hardware of any kind (but would
> gladly accept donation of such to test the debian powerpc kernels on),
> and i thought that, until yaboot2 is working, you use yaboot on newworld
> powermacs, which don't support compressed kernels.

currently oldworlds boot via a non-OF based bootloader called miboot,
its a MacOSROM based bootloader (and thus as fundementally flawed as
BootX), its advantage is you can stick a miboot floppy in the drive
and it will boot, without hacking.  the OF method will REQUIRE that
the user connect a serial terminal to access OpenFirmware.  this may
well end up being what will have to happen in the long run anyway,
macos based booting is a can of worms that is likly to just go away.

> I thought oldpmac hardware used quik, but there is also bootx and now
> miboot. So, when using quick, what is kernel that is needed ? 

miboot can only be used on floppies, for anything else proprietary
Apple disk code is required on the disk, cd whatever.

quik is the only usuable option for disk booting.  (until yaboot2,
which will happen in 2037 at the current rate).

BootX is a macos program and is thus irrelevant to debian.

> If i look at the kernel's arch/ppc/boot/images, i get :
> 
>   1602678 miboot.image
>   2291148 vmlinux.coff
>   2360440 vmlinux.elf-pmac
>   1602433 vmlinux.gz
>   2360304 zImage.chrp
>   2360304 zImage.chrp-rs6k
>   12	  zImage.pmac -> vmlinux.coff
>   1655582 zImage.prep

all irrelevant.  look at vmlinux a the root of the source tree.

> (Notice, these are not the kernel image, but my own build tree, so the
> sizes are bigger).
> 
> So, i thought we had kernels for chrp, prep and chrp-rs6k, the
> uncompressed elf-pmac for yaboot, and the .coff image.

yaboot (and quik, and miboot) requires the vmlinux at the root of the
source tree.  all that crap in arch/ppc is irrlevant and unusable for
bootloaders.

> This leaves the miboot.image and the vmlinux.gz i don't know anything
> about.

both wrong.

> No oldpmac user does, that is, we have suppport for newworld, probably
> both chrp as well as prep, and pegasos.

newworld support is very broken in d-i from my last look at the
retarded mess that is yaboot-installer.  whoever got ahold of that has
obviously NEVER read one line of yaboot documentation, nor ever looked
at the yaboot package.

> So, most probably d-i for sarge will support those arches or subarches
> for people who care about it.

thats generally how debian works, only things people care about are supported.

-- 
Ethan Benson
http://www.alaska.net/~erbenson/

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