[haiku-development] Re: EFI (was: multi-selection semantics)
- From: Marcus Overhagen <marcusoverhagen@xxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sat, 9 Jun 2007 10:54:28 +0200 (CEST)
Oliver Tappe wrote:
> Hm, wouldn't the bootloader have to *include* the networking stack and the
> drivers? Maybe I'm wrong, but there would be no way to access the modules,
No it doesn't have to, the pxehaiku-loader has networking support (UDP)
> since they are living on the other side of the network link, right?
> AFAIK, PXE offers downloading an initramfs (cpio-fs), too, so we could stuff
> the needed stuff in there and then the bootloader could tell the kernel that
> there is such a beast.
Yes we could download something with tftp. right now the remote_disk protocol
is used to acess a bfs partition.
> The kernel would then of course have to unpack/mount the initramfs and invoke
> a specific program, which in this case (NBD-boot) would set up networking,
> mount /boot and then would let the kernel continue the booting process.
>
> Marcus: When I tested it last time, I think I noticed that your PXE
> bootloader does not use any initramfs yet, is that correct?
>
> Is there any reason not to use an initramfs?
The current PXE boot process is like this (I hope I get this right)
PXE-BIOS loads pxehaiku from tftpserver
pxehaiku load pxehaiku-loader
pxehaiku-loader (zbeos) uses PXE-BIOS-UNDI services to load required files
(kernel) using remote_disk
Please have a look at this mail:
//www.freelists.org/archives/openbeos/01-2007/msg00038.html
I'm using no initramfs, since I can load all required files using the
remote_disk
service. But once the kernel is completely loaded and executing, the
PXE-BIOS-UNDI services are no longer available, and we would need to
use the network stack.
> I would *really* like to see haiku boot over PXE, but unfortunately I still
> do not have any spare time :o(
I understand and have similar problems.
Marcus
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