On Tue, 17 Nov 2015, David Vrabel wrote: > On 17/11/15 09:57, shannon.zhao@xxxxxxxxxx wrote: > > From: Shannon Zhao <shannon.zhao@xxxxxxxxxx> > > > > Add a "uefi" node under /hypervisor node in FDT, then Linux kernel could > > scan this to get the UEFI information. > [...] > > --- 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: > > It's not really clear why this is under /hypervisor and why xen needs to > define its own nodes. There was a very long discussion about this, see http://marc.info/?l=xen-devel&m=144321258920213 > The handling of the existing linux standard nodes can be made > Xen-specific by the presence of the /hypervisor/compatible == "xen" node > (or similar), right? > > > +________________________________________________________________________________ > > +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. > > +-------------------------------------------------------------------------------- > > I would probably say "Guest physical address..." just to be clear. > > > +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. > > +-------------------------------------------------------------------------------- > > Need a reference to the mmap descriptor format here. > > David > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
