Reviewed-By: Olivier Martin <[email protected]> On 03/02/15 19:20, Ard Biesheuvel wrote: > This patchs adds support to VirtFdtDxe for the Xen DT node which > contains the base address of the Grant Table. This data is communicated > to XenBusDxe using a XENIO_PROTOCOL instance. > > Contributed-under: TianoCore Contribution Agreement 1.0 > Reviewed-by: Laszlo Ersek <[email protected]> > Signed-off-by: Ard Biesheuvel <[email protected]> > --- > .../ArmVirtualizationPkg/ArmVirtualization.dsc.inc | 2 ++ > .../ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.c | 23 > ++++++++++++++++++++++ > .../ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.inf | 1 + > 3 files changed, 26 insertions(+) > > diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualization.dsc.inc > b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualization.dsc.inc > index f17cd2f5d876..e7a03cd13d3a 100644 > --- a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualization.dsc.inc > +++ b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualization.dsc.inc > @@ -100,6 +100,8 @@ > BdsLib|ArmPkg/Library/BdsLib/BdsLib.inf > FdtLib|EmbeddedPkg/Library/FdtLib/FdtLib.inf > > + XenIoMmioLib|OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf > + > [LibraryClasses.common.SEC] > PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf > > ArmPlatformSecExtraActionLib|ArmPlatformPkg/Library/DebugSecExtraActionLib/DebugSecExtraActionLib.inf > diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.c > b/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.c > index 3e8ca8da627e..0064b5e50171 100644 > --- a/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.c > +++ b/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.c > @@ -26,6 +26,7 @@ > #include <Library/DxeServicesLib.h> > #include <Library/HobLib.h> > #include <libfdt.h> > +#include <Library/XenIoMmioLib.h> > > #include <Guid/Fdt.h> > #include <Guid/VirtioMmioTransport.h> > @@ -49,6 +50,7 @@ typedef enum { > PropertyTypePsci, > PropertyTypeFwCfg, > PropertyTypeGicV3, > + PropertyTypeXen, > } PROPERTY_TYPE; > > typedef struct { > @@ -66,6 +68,7 @@ STATIC CONST PROPERTY CompatibleProperties[] = { > { PropertyTypePsci, "arm,psci-0.2" }, > { PropertyTypeFwCfg, "qemu,fw-cfg-mmio" }, > { PropertyTypeGicV3, "arm,gic-v3" }, > + { PropertyTypeXen, "xen,xen" }, > { PropertyTypeUnknown, "" } > }; > > @@ -342,6 +345,26 @@ InitializeVirtFdtDxe ( > } > break; > > + case PropertyTypeXen: > + ASSERT (Len == 16); > + > + // > + // Retrieve the reg base from this node and wire it up to the > + // MMIO flavor of the XenBus root device I/O protocol > + // > + RegBase = fdt64_to_cpu (((UINT64 *)RegProp)[0]); > + Handle = NULL; > + Status = XenIoMmioInstall (&Handle, RegBase); > + if (EFI_ERROR (Status)) { > + DEBUG ((EFI_D_ERROR, "%a: XenIoMmioInstall () failed on a new handle > " > + "(Status == %r)\n", __FUNCTION__, Status)); > + break; > + } > + > + DEBUG ((EFI_D_INFO, "Found Xen node with Grant table @ 0x%Lx\n", > RegBase)); > + > + break; > + > default: > break; > } > diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.inf > b/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.inf > index 2768d7be8093..65eaef693d63 100644 > --- a/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.inf > +++ b/ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.inf > @@ -41,6 +41,7 @@ > FdtLib > VirtioMmioDeviceLib > HobLib > + XenIoMmioLib > > [Guids] > gFdtTableGuid
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