OvmfPkg/CpuHotplugSmm: introduce Post-SMM Pen for hot-added CPUs

[mirror_edk2.git] / OvmfPkg / CpuHotplugSmm / Smbase.h

diff --git a/OvmfPkg/CpuHotplugSmm/Smbase.h b/OvmfPkg/CpuHotplugSmm/Smbase.h
new file mode 100644 (file)
index 0000000..cb5aed9
--- /dev/null
+++ b/OvmfPkg/CpuHotplugSmm/Smbase.h
@@ -0,0 +1,32 @@
+/** @file\r
+  SMBASE relocation for hot-plugged CPUs.\r
+\r
+  Copyright (c) 2020, Red Hat, Inc.\r
+\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
+**/\r
+\r
+#ifndef SMBASE_H_\r
+#define SMBASE_H_\r
+\r
+#include <Uefi/UefiBaseType.h> // EFI_STATUS\r
+#include <Uefi/UefiSpec.h>     // EFI_BOOT_SERVICES\r
+\r
+EFI_STATUS\r
+SmbaseAllocatePostSmmPen (\r
+  OUT UINT32                  *PenAddress,\r
+  IN  CONST EFI_BOOT_SERVICES *BootServices\r
+  );\r
+\r
+VOID\r
+SmbaseReinstallPostSmmPen (\r
+  IN UINT32 PenAddress\r
+  );\r
+\r
+VOID\r
+SmbaseReleasePostSmmPen (\r
+  IN UINT32                  PenAddress,\r
+  IN CONST EFI_BOOT_SERVICES *BootServices\r
+  );\r
+\r
+#endif // SMBASE_H_\r