Questions about booting Linux kernel using AARCH64 GRUB

[林揆斌]

Dear Leif:

I got some questions about the routine "grub_linux_boot" in "grub-core/loader/arm64/linux.c"

from master branch of this repo: "git://git.savannah.gnu.org/grub.git" and would like your help.

The questions are as follows:

1. >From my understanding, this routine uses bootservice->load_image in line 274 and bootservice->start_image in line 297 to load/start the Linux kernel (i.e. zImage), is it correct?

Or it is actually loading something else?

2. If question 1 were true, does it mean that the Linux kernel should be in PE format? Because 
bootservice->load_image requires the file to be in that format otherwise it will return "UNSUPPORTED", which is the problem I'm facing now.

3. If question 2 were true, how to solve this problem? Do I have to tweak zImage to PE format?

Best regards and thanks,

Cedric