Messages in this thread | | | From | Grant Likely <> | Subject | Re: [PATCH v3 1/3] Documentation: arm: add UEFI support documentation | Date | Thu, 05 Dec 2013 11:08:48 +0000 |
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On Wed, 4 Dec 2013 15:06:47 -0600, Matt Sealey <neko@bakuhatsu.net> 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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