[syslinux] Regarding: {syslinux} Creating Syslinux UEFI usb boot

[Atle Holm]

Den 21. april 2016 kl. 14.21.04 +02.00 skrev Geert Stappers <stappers at stappers.nl>:

> On Thu, Apr 21, 2016 at 06:39:44AM -0400, Gene Cumm via Syslinux wrote:
> 
> > On Thu, Apr 21, 2016 at 3:29 AM, Atle Holm <<atle at team-holm.net>> wrote:
> > 
> > > Under EFI/BOOT are the following files:
> > > BOOTIA32.EFI (from efi32/efi/syslinux.efi)
> > > BOOTX64.EFI (from efi64/efi/syslinux.efi)
> > > ldlinux.sys (copied from root of partition)
> > > lua.c32
> > > mboot.c32
> > > menu.c32
> > > syslinux.cfg
> > > vesamenu.c32
> > > KS.CFG (vmware specific)
> > > BOOT.CFG (vmware specific)
> > > autoselect.lua
> > > 
> > > These files are also all under the root of the partition (except
> > > BOOTIA32.EFI and BOOTX64.EFI) and work fine there if I use a normal bios
> > > boot. When using UEFI boot, things don't work.
> > > 
> > I'd fully expect this. Syslinux for EFI is incomplete.
> > 
> > 
> > > If the .c32 files here are incorrect for UEFI boot, where do I get the
> > > correct files?
> > > 
> > The same place as the other files. You'll need at least
> > efi64/com32/elflink/ldlinux/ldlinux.e64
> > 
> > 
> > > I haven't been able to find a description/recipe on how to set up UEFI boot
> > > with Syslinux. Why is there none, or where is it? That would probably be
> > > easier.
> > > 
> > I had the impression from the first or second message you send that
> > you already had a recipe.
> > 
> > <http://www.syslinux.org/wiki/index.php?title=Install#UEFI> is a start.
> > 
> > An additional config will be warranted. In the root of the file
> > system, a file named syslx64.cfg with
> > 
> > #BEGIN syslx64.cfg
> > PATH boot/syslinux/x64
> > INCLUDE common.cfg
> > #END syslx64.cfg
> > 
> > 
> > For COM32 modules, you'll need at least (vesa)menu.c32, lua.c32,
> > mboot.c32, and all of the libraries they depend on (though everything
> > is easier) from within efi64/com32/ for the 64-bit placed in the
> > boot/syslinux/x64 directory.
> > 
> > Then rename your existing syslinux.cfg as common.cfg and create a new
> > syslinux.cfg with
> > 
> > 
> > #BEGIN syslinux.cfg
> > PATH boot/syslinux/bios
> > INCLUDE common.cfg
> > #END syslinux.cfg
> > 
> > 
> > and move the BIOS COM32 modules to that directory.
> > 
> > I'm reasonably certain that the shuffling of your current syslinux.cfg
> > and the current BIOS COM32 modules will be necessary as the EFI
> > variants will likely try to load the BIOS COM32 module from the root
> > instead of the directory in PATH and fail.
> > 
> 
> Hello Alte,
> 
> Please consider to subscribe to the Syslinux mailinglist.
> If you are allready a subscriber of that ML,
> then please use on your next to <syslinux at zytor.com>
> the e-mail with which you are subscribed.
> 
> You are benefit is no delay that your posting reaches the Syslinux community,
> my benefit is no manual labour on posting approval.
> (discard of spam posting (spammers are also non-subscribers)
> requires nearly no manual labour)
> 
> 
> Regards
> Geert Stappers
> In his role as moderator of the Syslinux mailinglist.
> 
> @Gene Thank you for waiting on Alte postings seen on the ML.
> I don't no if it is intended, but it feels good to have
> on the mailinglist the same order appearing messages
> as they were written.
> OK, it now looks like this.
/common.cfg (has contents of previously syslinux.cfg for menu and all)
/syslinux.cfg
PATH BOOT/SYSLINUX/BIOS
INCLUDE common.cfg
/syslx64.cfg
PATH BOOT/SYSLINUX/x64
INCLUDE common.cfg
/BOOT.CFG (vmware specific)
/KS.CFG (vmware specific)
/EFI/BOOT/BOOTIA32.EFI
/EFI/BOOT/BOOTX64.EFI
/EFI/BOOT/ldlinux.e64
/EFI/BOOT/ldlinux.elf
/BOOT/SYSLINUX/BIOS/lua.c32 (241 KB)
/BOOT/SYSLINUX/BIOS/mboot.c32 (79 KB)
/BOOT/SYSLINUX/BIOS/menu.c32 (54 KB)
/BOOT/SYSLINUX/BIOS/vesamenu.c32 (150 KB)
/BOOT/SYSLINUX/x64/cmenu.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/cpu.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/dhcp.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/dmi.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/lfs.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/liblua.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/lua.c32 (9KB) - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/mboot.c32 (13KB) - from syslinux-6.03.zip\efi64\com32\mboot
/BOOT/SYSLINUX/x64/menu.c32 (32KB) - from syslinux-6.03.zip\efi64\com32\menu
/BOOT/SYSLINUX/x64/pci.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/syslinux.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/vesa.c32 - from syslinux-6.03.zip\efi64\com32\lua\src
/BOOT/SYSLINUX/x64/vesamenu.c32 (11 KB) - from syslinux-6.03.zip\efi64\com32\menu

So when I do a BIOS boot, I now get:
Could not find kernel image: vesamenu.c32
This used to work earlier.

When I do a UEFI boot, I now get:
Failed to load COM32 file: vesamenu.c32
So that is progress.

I tried placing the contents of /BOOT/SYSLINUX/x64 on the root of the disk and also inside /EFI/BOOT/ but that made no difference. I noticed that the c32 files that I found from syslinux-6.03.zip were alot smaller then the BIOS C32 files I have been using from syslinux 4.05 that came shipped with Ubuntu (see my notations above).
I am guessing that the files in syslinux-6.03.zip need compiling of some sort to include all it should in the file?
If so, how to do?
Do I have to compile and install the whole syslinux-6.03 package to get the com32 modules?

Best regards,
Atle