QEMU with network boot
Kostik Belousov
kostikbel at gmail.com
Wed May 7 12:31:08 UTC 2008
On Wed, May 07, 2008 at 10:18:30PM +1000, Edwin Groothuis wrote:
> On Wed, May 07, 2008 at 10:14:37PM +1000, Edwin Groothuis wrote:
> > On Wed, May 07, 2008 at 01:21:08AM -0700, Bakul Shah wrote:
> > > > I have moved the file /boot/pxeboot to my tftpboot directory, it
> > > > gets loaded but then QEMU complains about:
> > > >
> > > > ......TFTP download complete, but Unable to load file.
> > > >
> > > > And restarts. Not sure what goes wrong...
> > >
> > > See my message to Freebsd-emulation, dated 23 Apr 2007
> > > 12:23:09 PDT. With the patched and recompiled etherboom ROM
> > > now it gets to pxeboot loader's OK prompt. NFS MOUNT fails
> > > but it gets further than I remember!
> >
> > Thanks for your reply, I've managed to create my new rtl8139.zrom.
> > And it works like a charm!
> >
> > --------------------- 8< ----------------------------------
> > Loading 192.168.253.1:/boot/pxeboot ..(PXE).....................................
> > ................................................................................
> > ................................................................................
> > ................................................................................
> > ................................................................................
> > .......................................................................done
> > PXE Loader 1.00
> >
> > Building the boot loader arguments
> > Relocating the loader and the BTX
> > Starting the BTX loader
> >
> > BTX loader 1.00 BTX version is 1.01
> > Consoles: internal video/keyboard
> > BIOS drive C: is disk0
> >
> > PXE version 2.1, real mode entry point @9f00:0680
> >
> > int=0000000d err=00000000 efl=00020002 eip=00000916
> > eax=0009cb90 ebx=000008eb ecx=00000000 edx=00003c54
> > esi=00000000 edi=00000000 ebp=0009cf62 esp=000003d2
> > cs=9f00 ds=9f00 es=0000 fs=0000 gs=0000 ss=9cb9
> > cs:eip=66 0f 01 97 52 00 0f 20-c0 0c 01 0f 22 c0 66 ff
> > af 6a 00 66 b8 10 00 8e-d0 89 ec 8e d8 8e c0 8e
> > ss:esp=00 00 00 00 71 00 00 00-00 00 00 00 e2 f6 09 00
> > 00 9f b9 9c 00 00 00 00-00 00 00 00 00 00 02 02
> >
> > BTX halted
> > --------------------- 8< ----------------------------------
> >
> > Nearly like a charm. Well, the PXE part does work now, but the BTX
> > part is not good.
> >
> > It doesn't matter if I use an pxeboot from an 6.3 system or an 7.0
> > system. This happens with both emulators/qemu as with emulators/qemu-devel.
> >
> > Any idea where to look now?
>
> http://www.mavetju.org/mail/view_message.php?list=freebsd-emulation&id=2550189
> of course.
>
> I need to start writing things up on this so others will have less
> troubles than I have :-)
jhb@ implemented the real-mode BTX and committed it into CVS. It is in
HEAD and RELENG_7, and I believe it is in RELENG_6 too. You need either
to update your sources or to take new btx from the head of desired branch.
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