Re: [PATCH 0/2] arm64: Support HP Envy X2

[Leif Lindholm]

Hi Alex,

On Wed, Nov 28, 2018 at 03:31:05PM +0100, Alexander Graf wrote:
> I got a new toy this week: An HP Envy X2 system. This is one of those shiny
> new Qualcomm Snapdragon based Windows tablet/notebook hybrid things.
> 
> While running Windows on those is actually not a terribly bad experience now
> that WSL is out, I would like to see Linux run on those as well in the future.
> 
> Unfortunately as far as I'm aware so far nobody was able to run self built
> binaries on the built-in UEFI version.
> 
> Turns out, it's a problem with aligning the start of the header to 4k. Once
> we do that, binaries can be loaded just fine and run.

Nice job!
 
> So to maintain compatibility with that device, this patch set just bumps the
> header alignment to 4K always on arm64-efi. This shouldn't hurt too much for
> not affected targets and allows us to have a single grub binary that can then
> chain load Linux properly.

While I really appreciate this work, let's start by trying to get HP
to fix their device. Shouldn't be too hard to get a firmware update
rolled out.

Then we might want to add a test to now-opensource UEFI SCT :)

I'm going to be a bit busy today, but will put together a simpler
proof-of-concept (i.e. edk2 HelloWorld) tomorrow and test on my own
Envy X2, and send it to HP.

Regards,

Leif

> 
> Alex
> 
> Alexander Graf (2):
>   mkimage: Simplify header size logic
>   mkimage: arm64-efi: Align first section to page
> 
>  util/mkimage.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> -- 
> 2.19.0
>