[ipxe-devel] building for use virtualbox

Warren Turkal wt at ooyala.com
Mon Jan 28 18:08:14 GMT 2013


I'm not really sure at this point. Robin's comment sent me on a hunt. I
found the following in the logs:
DevPcBios: Failed to open LAN boot ROM file '/Users/wt/VirtualBox
VMs/8086100e.rom', rc=VERR_TOO_MUCH_DATA!

So, I guess it isn't loading my ipxe rom. I'll see if I can figure out how
to cut it down to the needed size (apparently needs to be <58K). Does
anyone have any suggestions for how to trim the size without removing http
support?

Thanks,
wt


On Sat, Jan 26, 2013 at 4:29 AM, Thomas Miletich
<thomas.miletich at gmail.com>wrote:

> On Fri, Jan 25, 2013 at 7:33 PM, Warren Turkal <wt at ooyala.com> wrote:
> >
> > I am definitely getting the iPXE as it has splash screen like the one
> Andrew linked. Also, I can hit ctrl-b and exec ipxe commands, which is not
> possible with the built-in PXE. What isn't working is the HTTP protocol
> support.
> >
> > Also, my config/local/general.h is empty, so I don't think it's
> overriding anything.
> >
> > Here's another datapoint:
> > $ grep http 8086100e.rom.tmp.map  | head -n2
> > bin/blib.a(http.o)            bin/blib.a(config.o) (obj_http)
> > bin/blib.a(httpcore.o)        bin/blib.a(http.o) (http_open_filter)
> >
> > The 8086100e.rom.tmp also has evidence of http. So, it looks like some
> http code has made it that far...I just can't use it. I don't know if it's
> just being stripped from the final rom binary, but there is no instace of
> http outside of a couple web addresses in 8086100e.rom. See the following:
> > $ strings 8086100e.rom | grep -i http
> > http://ipxe.org
> > iPXE (http://ipxe.org)
> > $ strings 8086100e.rom.tmp | grep -i http
> > http://ipxe.org
> > iPXE (http://ipxe.org)
> > [36mhttp://ipxe.org
> > See http://ipxe.org/cmd/%s for further information
> > http
> > %s (http://ipxe.org/%08x)
> > Error %#08x (http://ipxe.org/%08x)
> > http://ipxe.org/cfg/%s
> >
> > Why does the 8086100e.rom not have as many "http"-containing strings?
>
> The .rom image is compressed, the .rom.tmp isn't. So you won't be able
> to identify strings in the .rom image. If you can find them in the
> corresponding .rom.tmp image it should be fine.
>
> Are you really sure you're loading the correct image?
>
> > Thanks,
> > wt
> >
> >
> > On Thu, Jan 24, 2013 at 9:09 AM, Andrew Bobulsky <rulerof at gmail.com>
> wrote:
> >>
> >> On Wed, Jan 23, 2013 at 4:16 PM, Warren Turkal <wt at ooyala.com> wrote:
> >>>
> >>> iPXE devs,
> >>>
> >>> I have successfully built ipxe and used it in virtualbox much like the
> instructions here. However, when I do the "make bin/8086100e.rom", the rom
> image does not appear to contain the HTTP support code as I cannot use http
> urls in the ipxe shell after boot and hitting ctrl-b. Commands like with
> "imgfetch http://192.0.0.1/blah.img" fail with the following error:
> >>>
> >>> Could not start download: Operation not supported (
> http://ipxe.org/3c092003)
> >>>
> >>> The HTTP code does appear to be built by default since I see "#define
> DOWNLOAD_PROTO_HTTP" in the general.h. I also see the following:
> >>>
> >>> $ grep -i http bin/8086100e.rom
> >>> Binary file bin/8086100e.rom matches
> >>>
> >>> However, I do see "TFTP" and do not see "HTTP" in the "Features:" line
> of iPXE that shows before the prompt.
> >>>
> >>> I am using the tip of master for this test. The commit id is
> "3fcb8cf8dceb45f8b01e1d69d43cfd99df43b78a".
> >>>
> >>> Is there anything else that I should be doing to enable HTTP support
> in the iPXE rom that I am building.
> >>>
> >>> Thanks,
> >>> wt
> >>> --
> >>> Warren Turkal
> >>> Site Reliability Engineer |
> >>> wt at ooyala.com | 650-961-3400
> >>> www.ooyala.com | blog | @ooyala
> >>>
> >>> _______________________________________________
> >>> ipxe-devel mailing list
> >>> ipxe-devel at lists.ipxe.org
> >>> https://lists.ipxe.org/mailman/listinfo.cgi/ipxe-devel
> >>
> >>
> >> Hello Warren,
> >>
> >> If you are indeed having build-related problems, I wouldn't be able to
> help you much, but I wanted to write as I've experienced this before.
>  Virtualbox includes a version of iPXE that has very limited protocol
> support, and it is the default PXE ROM in every vbox VM I have used.  If,
> for some reason, your attempt to inject the ROM into your Virtualbox VM's
> configuration didn't work, it would load the built-in version instead, and
> while you'd be loading iPXE (which would look like a successful
> implementation, but of course is just the old, built-in ROM loading).  That
> built-in iPXE splash screen looks like this:
> http://i.imgur.com/gfVjURG.png
> >>
> >> If you like, the only test I could suggest that might shed some light
> on whether or not your features are being included in the build, you can
> instead...
> >>
> >> $ make bin/8086100e.pxe
> >>
> >> ...and then chainload *that* file from a TFTP server using the iPXE
> inside of your VM, and check to see if your features work.  If they do,
> it's quite likely you just need some updated guide on how to replace your
> VirtualBox NIC's ROM.
> >>
> >> Cheers,
> >> Andrew Bobulsky
> >
> >
> >
> >
> > --
> > Warren Turkal
> > Site Reliability Engineer |
> > wt at ooyala.com | 650-961-3400
> > www.ooyala.com | blog | @ooyala
> >
> > _______________________________________________
> > ipxe-devel mailing list
> > ipxe-devel at lists.ipxe.org
> > https://lists.ipxe.org/mailman/listinfo.cgi/ipxe-devel
> >
>



-- 
*Warren Turkal*
Site Reliability Engineer |
wt at ooyala.com | 650-961-3400
www.ooyala.com | blog <http://www.ooyala.com/blog> |
@ooyala<http://www.twitter.com/ooyala>
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