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ArmVirtualizationPkg/VirtFdtDxe: wire up XenBusDxe to "xen,xen" DT node 

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 <lersek@redhat.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16980 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel 2015-02-28 20:34:26 +00:00 committed by lersek
parent 0169352eaa
commit 6abe83c3c8
3 changed files with 26 additions and 0 deletions
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2
ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualization.dsc.inc
View File

@ -107,6 +107,8 @@
# USB Libraries
UefiUsbLib|MdePkg/Library/UefiUsbLib/UefiUsbLib.inf
XenIoMmioLib|OvmfPkg/Library/XenIoMmioLib/XenIoMmioLib.inf
[LibraryClasses.common.SEC]
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
ArmPlatformSecExtraActionLib|ArmPlatformPkg/Library/DebugSecExtraActionLib/DebugSecExtraActionLib.inf

23
ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.c
View File

@ -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>
@ -50,6 +51,7 @@ typedef enum {
PropertyTypeFwCfg,
PropertyTypePciHost,
PropertyTypeGicV3,
PropertyTypeXen,
} PROPERTY_TYPE;
typedef struct {
@ -68,6 +70,7 @@ STATIC CONST PROPERTY CompatibleProperties[] = {
{ PropertyTypeFwCfg, "qemu,fw-cfg-mmio" },
{ PropertyTypePciHost, "pci-host-ecam-generic" },
{ PropertyTypeGicV3, "arm,gic-v3" },
{ PropertyTypeXen, "xen,xen" },
{ PropertyTypeUnknown, "" }
};
@ -523,6 +526,26 @@ 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;
}

1
ArmPlatformPkg/ArmVirtualizationPkg/VirtFdtDxe/VirtFdtDxe.inf
View File

@ -42,6 +42,7 @@
FdtLib
VirtioMmioDeviceLib
HobLib
XenIoMmioLib
[Guids]
gFdtTableGuid