[Xen-devel] Building 32-bit xen.efi for 32-bit EFI platforms

[Zhuan Chen <zhuanchen@xxxxxxxxx>]

Hi,

I am wondering whether it's possible to build 32-bit xen.efi for the
32-bit EFI platform? One way of building xen.efi I learnt is to make
the binutils configured with the x86_64-pep emulation (according to
the document http://xenbits.xenproject.org/docs/unstable/misc/efi.html).
The resulted xen.efi is 64-bit mode. Is it possible to build xen.efi
as the 32-bit mode?

The reason for this question is due to my effort of installing Xen on
the Asus Transformer Book T100, which is one of the Bay Trail Atom
(64-bit processors) tablets shipped with 32-bit EFI firmware. This
requires the support of the 32-bit EFI bootloader. Such platforms seem
to become common and Linux kernel from 3.15 also provides the EFI
mixed mode to support 64-bit kernels running from 32-bit EFI firmware.

Thanks,
Zhuan

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