Booting CentOS6.5 kernel failed with UEFI mode

[Hudson]

We have erase the i350 NIC card with efirom, and the following script was used in our PXE server.

#!ipxe
kernel tftp://xxx.xxx.xxx.xxx/boot/vmlinuz initrd=initrd.img
initrd tftp://xxx.xxx.xxx.xxx/boot/initrd.img
boot

Such a scrip works normally with the ubuntu1404, which kernel verison is 3.13.

But we tried to use it with the CentOS6.5 or the Ubuntu 1004, which kernel version is about 2.6.XX

We met the following errors with the kernel.
"Could not select: Exec format error (http://ipxe.org/2e008081)
Could not boot image: Exec format error (http://ipxe.org/2e008081)"

Is there any solution for supporting boot the old 2.6 kernel with iPXE in the UEFI mode?