[syslinux] EFI: PXE: "My IP is 0.0.0.0"

[S. Schauenburg]

Hey everyone,

sorry for the delay in replying. First off, thanks for all the help, effort
and support so far!

== build ==
I built and used syslinux from https://github.com/ppatpat/syslinux (latest
commit 43f5efa2db4a7880c7a2c6485d8fd8a64f0f33c3).

On top of that I had to patch main.c. This had to be done to mitigate the
following error when trying to 'make all':
main.c:(.text+0x3b9): undefined reference to `BSWAP_64'

More specifically I made this change:
diff  ../syslinux_ppatpat_orig/efi/main.c efi/main.c
13a14
> #include <byteswap.h>
178c179
<
BSWAP_64(*(uint64_t*)&bguid->Data4),
---
>

This build of syslinux works on my HP ProLiant DL380 Gen9 server while
netbooting from nic1 (not nic0) :-)


== output booting pxe ==
Don't know if it is useful, but I saw this output when booting from pxe
over IPv4:
...
  NBP file downloaded successfully.
Booting from:
Acpi(PNP0A3,0)/Pci(1C|4)/Pci(0|1)/Mac(XXXXXXXXXXXX)/IPv4(not-done)
Getting cached packet
...


== output page-fault ==
Sometimes (rarely) I get a Page-Fault Exception (red text). I haven't been
able to track this issue down. Might be unrelated, but wanted to post it
for completeness.
X64 Exception Type 0E - Page-Fault Exception
...
CALL ImageBase        ImageName+Offset
00h  0000000077283000 No Image Information


Best regards,



Sebastian

On Sun, Jul 12, 2015 at 3:35 AM, Gene Cumm via Syslinux <syslinux at zytor.com>
wrote:

> On Fri, Jul 10, 2015 at 5:00 AM, Patrick Masotta <masottaus at yahoo.com>
> wrote:
>
> >>>>
> > Oh how fun.  UEFI Specifications version 2.0 states "An
> > EFI_PXE_BASE_CODE_PROTOCOL will be layered on top of an
> > EFI_SIMPLE_NETWORK_PROTOCOL protocol in order to perform packet level
> > transactions." while version 2.1 states "An EFI_PXE_BASE_CODE_PROTOCOL
> > will be layered on top of an EFI_MANAGED_NETWORK_PROTOCOL protocol in
> > order to perform packet level transactions."
> >>>>
> >
> > Could this be the reason why in the past Pxebc and the SBs where
> attached to different handles?? mmhhh
> > I have to admit; UEFI development is a bit messy...
>
> I'd suspect possibly.  I also have yet to see evidence your HP
> EliteBook 2560p is not UEFI-2.0 compliant.  It's safe to assume the
> 2560p and 2570p are not 2.1 compliant as the Pxebc appears backed by a
> Net not an MNPSb.
>
> --
> -Gene
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