[syslinux] EFI: HP + syslinux = crash

[Patrick Masotta]

>>>
 Okay, the code in efi/ uses Print() from gnu_efi, but generic code from
 core/ like core/elflink/load_env32.c prints their messages and debugging
 stuff using printf(). These messages end up nowhere. This may explain
 why I never saw anything beyond a certain point, even with debugging
 turned on.
 <<<

isn't it redirected at all??

>>>
 I was busy adding some code to dprintf.h to add a wrapper that converts 
 the dprintf calls to a APrint("%a", buf) calls when I got an idea... The 
 ILO4 environment provides a virtual COM2 port. I was reluctant to
 hook  something to COM1 as I have to order some hardware for that, but this 
 also works very well. A pity I didn't think of using it earlier.
 <<<


You can set the com address for debugging (com1/com2/ whatever) if you like

>>>
 Still miss the printf output, though, so error messages from the shared 
 code don't reach the user.
<<<

guau...

 
>>>
 Got some result!
 I was using  'vesamenu.c32' to display a menu. Changing this to
 'menu.c32' resulted in a booting system! Okay, the menu is not that 
 beautiful, but the system boots very well right now.
 
 Now... why is vesamenu.c32 crashing like it does now? 
<<<

Are you still loading PNGs?
Have you tried vesamenu w/o a background image?

 >>>
 Why is the version I tried without Gene's latest patches crashing before even beginning to load the
 first stage: ldlinux.e64?
<<<

when you do not see the transfer of ldlinux.e64 the chances are you are suffering the multi-nic bug.
If you see "anything" after syslinux.efi transferred correctly that tells us the multi-nic bug is gone and
there might be something else going on now.

Best,
Patrick