Re: [PATCH v4] armv8: Handle EL2 Host mode

Tom Rini
2021-07-10T01:08:17Z

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On Wed, Feb 10, 2021 at 08:14:55PM +0100, Mark Kettenis wrote:

> On implementations that support VHE, the layout of the CPTR_EL2
> register depends on whether HCR_EL2.E2H is set. If the bit is
> set, CPTR_EL2 uses the same layout as CPACR_EL1 and can in fact
> be accessed through that register. In that case, jump to the
> EL1 code to enable access to the FP/SIMD registers. This allows
> U-Boot to run on systems that pass control to U-Boot in EL2 with
> EL2 Host mode enabled such as machines using Apple's M1 SoC.
>
> Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
> Acked-by: Marc Zyngier <maz@kernel.org>

Applied to u-boot/master, thanks!

--
Tom

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