[ipxe-devel] Issue when booting linux kernels when in UEFI mode

[Christian Nilsson]

On Thu, Jul 28, 2016 at 10:00 PM, James A. Peltier <jpeltier at sfu.ca> wrote:
>
>
> ----- Original Message -----
> | Hi All,
> |
> | A few months ago I installed a bunch of UEFI based machines using iPXE and
> | about a few days ago I tried and now systems in UEFI mode won't boot, but
> | when in BIOS mode they boot just fine.  Basically, the system downloads the
> | initrd and kernel and just hangs there.
> |

I can confirm this, doing chain http://boot.ipxe.org/ipxe.efi gives version 145a
and then trying to boot linux with a similar script just hangs (using
http://b800.org/sysr/sysrcd.ipxe)
While a older version works fine.

Chaining into ipxe.efi from ipxe.efi (145a) still works fine.

Not sure if I can find the time for a git bisect right now.

> | Below is the iPXE script
> |
> | #!ipxe
> |
> | :retry
> | initrd
> | http://mirror.its.sfu.ca/mirror/CentOS/7/os/${arch}/images/pxeboot/initrd.img
> | || goto retry
> | chain
> | http://mirror.its.sfu.ca/mirror/CentOS/7/os/${arch}/images/pxeboot/vmlinuz
> | initrd=initrd.img
> | method=http://mirror.its.sfu.ca/mirror/CentOS/7/os/${arch}/
> | ksdevice=${netX/mac} dhcptimeout=240 || goto retry
> | boot ||  goto retry
> |
> | When building iPXE for UEFI mode I have src/config/local/general.h.UEFI
> | contain
> |
> | #define DOWNLOAD_PROTO_HTTPS        /* Secure Hypertext Transfer Protocol */
> | #define IMAGE_EFI                   /* Include ability to load UEFI images */
> | #define VLAN_CMD                /* VLAN commands */

Unrelated but, IMAGE_EFI is default in efi builds and should not be
needed, I strongly recommend you only set the absolute minimum defines
to not end up with breakage.

/Christian

> |
> | I've built the latest iPXE source but I haven't gone back to older versions
> | yet to see where the problem may have come up.  I just wanted to see if
> | something may have changed in the way I should be building iPXE.  I can't
> | find any reference to the IMAGE_EFI define in the building reference either.
> | Thoughts?
>
>
> Sorry, just to clarify I know IMAGE_EFI in the source/config/general.h which is why it _should_ be working, but the docs for building don't reference it.
>