Add BhyvePkg, to support the bhyve hypervisor

BhyvePkg supports the bhyve hypervisor, which is a hypervisor/virtual
machine manager available on FreeBSD, macOS and Illumos.

Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
Message-Id: <20200713054131.479627-2-rebecca@bsdio.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>

OvmfPkg/Bhyve/SmbiosPlatformDxe/Bhyve.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2020, Rebecca Cran <rebecca@bsdio.com>
+ * Copyright (c) 2014, Pluribus Networks, Inc.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause-Patent
+ */
+
+#include "SmbiosPlatformDxe.h"
+
+#define BHYVE_SMBIOS_PHYSICAL_ADDRESS       0x000F0000
+#define BHYVE_SMBIOS_PHYSICAL_END           0x000FFFFF
+
+/**
+  Locates the bhyve SMBIOS data if it exists
+
+  @return SMBIOS_TABLE_ENTRY_POINT   Address of bhyve SMBIOS data
+
+**/
+SMBIOS_TABLE_ENTRY_POINT *
+GetBhyveSmbiosTables (
+  VOID
+  )
+{
+  UINT8                     *BhyveSmbiosPtr;
+  SMBIOS_TABLE_ENTRY_POINT  *BhyveSmbiosEntryPointStructure;
+
+  for (BhyveSmbiosPtr = (UINT8*)(UINTN) BHYVE_SMBIOS_PHYSICAL_ADDRESS;
+       BhyveSmbiosPtr < (UINT8*)(UINTN) BHYVE_SMBIOS_PHYSICAL_END;
+       BhyveSmbiosPtr += 0x10) {
+
+    BhyveSmbiosEntryPointStructure = (SMBIOS_TABLE_ENTRY_POINT *) BhyveSmbiosPtr;
+
+    if (!AsciiStrnCmp ((CHAR8 *) BhyveSmbiosEntryPointStructure->AnchorString, "_SM_", 4) &&
+        !AsciiStrnCmp ((CHAR8 *) BhyveSmbiosEntryPointStructure->IntermediateAnchorString, "_DMI_", 5) &&
+        IsEntryPointStructureValid (BhyveSmbiosEntryPointStructure)) {
+
+      return BhyveSmbiosEntryPointStructure;
+
+    }
+  }
+
+  return NULL;
+}