Re: [PATCH v2] arm/docs: Clarify legacy DT bindings on UEFI

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 13 Oct 2021, Luca Fancellu wrote:
> Since the introduction of UEFI boot for Xen, the legacy
> compatible strings were not supported and the stub code
> was checking only the presence of “multiboot,module” to
> require the Xen UEFI configuration file or not.
> The documentation was not updated to specify that behavior.
> 
> Add a phrase to docs/misc/arm/device-tree/booting.txt
> to clarify it.
> 
> Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
> Acked-by: Julien Grall <jgrall@xxxxxxxxxx>

Committed


> ---
> Changes in v2:
> - dropped redundant wording in docs/misc/arm/device-tree/booting.txt
> - Add more details to the commit message
> ---
>  docs/misc/arm/device-tree/booting.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/docs/misc/arm/device-tree/booting.txt 
> b/docs/misc/arm/device-tree/booting.txt
> index c6a775f4e8..71895663a4 100644
> --- a/docs/misc/arm/device-tree/booting.txt
> +++ b/docs/misc/arm/device-tree/booting.txt
> @@ -51,6 +51,8 @@ Each node contains the following properties:
>       Xen 4.4 supported a different set of legacy compatible strings
>       which remain supported such that systems supporting both 4.4
>       and later can use a single DTB.
> +     However when booting Xen using UEFI, the legacy compatible
> +     strings are not supported.
>  
>       - "xen,multiboot-module" equivalent to "multiboot,module"
>       - "xen,linux-zimage"     equivalent to "multiboot,kernel"
> -- 
> 2.17.1
>