loader.efi does not boot on Lenovo Yoga C630

[Hiroo Ono]

Thank you.

On 2021年5月1日土曜日 17時13分32秒 JST, Greg V wrote:
>
> On May 1, 2021 3:32:04 AM UTC, Hiroo Ono <hiroo at oikumene.net> wrote:
>> Hello,
>> 
>> I am trying to install FreeBSD/aarch64 to Lenovo Yoga C630 (81JL0012JP).
>> It has Snapdragon 850 as the processor.
>> 
>> I tried the 13.0R image, the UEFI BIOS recognizes the EFI partition,
>> but loader.efi does not start at all. The screen stays blank.
>> I added the following code to efi_main(), but still there is no text
>> output.
>
> Qualcomm firmware has an alignment requirement, see
>
> https://lists.gnu.org/archive/html/grub-devel/2018-12/msg00055.html
> https://github.com/tianocore/edk2/commit/de3c440e8a54c201c527b85da7b89d58486ece4d
>

I understand what needs to be done, but I still do not know how to do it.
I changed the following:
in stand/defs.mk:
CFLAGS.clang += -mcmodel=small

in stand/efi/loader/Makefile:
LDFLAGS+=       
-Wl,-T${LDSCRIPT},-Bsymbolic,-znotext,-zcommon-page-size=0x1000 -pie

But resulting loader_lua.efi and boot1.efi did not run.
What else should I do?