Re: [PATCH v3 1/3] Documentation: arm: add UEFI support documentation

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On Wed, 4 Dec 2013 15:06:47 -0600, Matt Sealey <neko@xxxxxxxxxxxxx> wrote:
> If your platform has UEFI, then your platform has UEFI - if you built
> a multiplatform kernel that needs to boot on U-Boot, then you glued an
> EFI stub to it to make it boot. At some point between the stub and the
> runtime services driver, you're going through 10,000 lines of code
> with the information that it *is* running on top of UEFI completely
> lost to the boot process.
> 
> I believe I am also objecting to the idea that the way this is BEST
> implemented is to take a stock zImage (decompressor+Image payload) and
> glue a stub in front to resolve the interface issue when the
> implication is extra complication to the boot process.

Adding UEFI support to an existing image type was a design goal when we
started. Having yet another image format which is not compatibile with
existing firmware adds yet another barrier to migrating from U-Boot to
UEFI, or to supporting multiplatforms.

g.
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