1 files changed, 41 insertions, 0 deletions
diff --git a/roms/edk2/OvmfPkg/VirtioRngDxe/VirtioRng.h b/roms/edk2/OvmfPkg/VirtioRngDxe/VirtioRng.h
new file mode 100644
index 000000000..21b910309
--- /dev/null
+++ b/roms/edk2/OvmfPkg/VirtioRngDxe/VirtioRng.h
@@ -0,0 +1,41 @@
+/** @file
+
+  Private definitions of the VirtioRng RNG driver
+
+  Copyright (C) 2016, Linaro Ltd.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _VIRTIO_RNG_DXE_H_
+#define _VIRTIO_RNG_DXE_H_
+
+#include <Protocol/ComponentName.h>
+#include <Protocol/DriverBinding.h>
+#include <Protocol/Rng.h>
+
+#include <IndustryStandard/Virtio.h>
+
+#define VIRTIO_RNG_SIG SIGNATURE_32 ('V', 'R', 'N', 'G')
+
+typedef struct {
+  //
+  // Parts of this structure are initialized / torn down in various functions
+  // at various call depths. The table to the right should make it easier to
+  // track them.
+  //
+  //                        field              init function       init depth
+  //                        ----------------   ------------------  ----------
+  UINT32                    Signature;      // DriverBindingStart   0
+  VIRTIO_DEVICE_PROTOCOL    *VirtIo;        // DriverBindingStart   0
+  EFI_EVENT                 ExitBoot;       // DriverBindingStart   0
+  VRING                     Ring;           // VirtioRingInit       2
+  EFI_RNG_PROTOCOL          Rng;            // VirtioRngInit        1
+  VOID                      *RingMap;       // VirtioRingMap        2
+} VIRTIO_RNG_DEV;
+
+#define VIRTIO_ENTROPY_SOURCE_FROM_RNG(RngPointer) \
+          CR (RngPointer, VIRTIO_RNG_DEV, Rng, VIRTIO_RNG_SIG)
+
+#endif