From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH 07/13] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Date: Tue, 17 Nov 2015 14:44:57 -0600 Message-ID: <20151117204457.GA31871@rob-hp-laptop> References: <1447754231-7772-1-git-send-email-shannon.zhao@linaro.org> <1447754231-7772-8-git-send-email-shannon.zhao@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1447754231-7772-8-git-send-email-shannon.zhao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: shannon.zhao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org Cc: ian.campbell-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org, stefano.stabellini-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org, catalin.marinas-5wv7dgnIgG8@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, julien.grall-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org, ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, xen-devel-GuqFBffKawuEi8DpZVb4nw@public.gmane.org, christoffer.dall-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, peter.huangpeng-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, zhaoshenglong-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, hangaohuai-hv44wF8Li93QT0dZR+AlfA@public.gmane.org List-Id: devicetree@vger.kernel.org On Tue, Nov 17, 2015 at 05:57:05PM +0800, shannon.zhao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org wrote: > From: Shannon Zhao > > Add a "uefi" node under /hypervisor node in FDT, then Linux kernel could > scan this to get the UEFI information. > > Signed-off-by: Shannon Zhao > --- > Documentation/devicetree/bindings/arm/xen.txt | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt > index 0f7b9c2..c375d67 100644 > --- a/Documentation/devicetree/bindings/arm/xen.txt > +++ b/Documentation/devicetree/bindings/arm/xen.txt > @@ -15,6 +15,24 @@ the following properties: > - interrupts: the interrupt used by Xen to inject event notifications. > A GIC node is also required. > > +To support UEFI on Xen ARM virtual platforms, Xen pupulates the FDT "uefi" node > +under /hypervisor with following parameters: > + > +________________________________________________________________________________ > +Name | Size | Description > +================================================================================ > +xen,uefi-system-table | 64-bit | Physical address of the UEFI System Table. > +-------------------------------------------------------------------------------- > +xen,uefi-mmap-start | 64-bit | Physical address of the UEFI memory map. > +-------------------------------------------------------------------------------- > +xen,uefi-mmap-size | 32-bit | Size in bytes of the UEFI memory map > + | | pointed to in previous entry. > +-------------------------------------------------------------------------------- > +xen,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI > + | | memory map. > +-------------------------------------------------------------------------------- > +xen,uefi-mmap-desc-ver | 32-bit | Version of the mmap descriptor format. > +-------------------------------------------------------------------------------- Why aren't you using what is already populated by UEFI as defined in Documentation/arm/uefi.txt? Seems to be about the same thing. Rob