[PATCH] SimicsOpenBoardPkg: Always set the boot priority by default

["David Wei" <david.y.wei@intel.com>]

When running networks of multiple machines, Simics assigns different disk IDs to each disk created.
this change the boot priority and can't boot from SATA HDD directly.
Clear boot priority in NVRAM can fix this issue.

Cc: Hao Wu <hao.a.wu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Ankit Sinha <ankit.sinha@intel.com>
Cc: Agyeman Prince <prince.agyeman@intel.com>
Cc: Kubacki Michael A <michael.a.kubacki@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>

Signed-off-by: David Wei <david.y.wei@intel.com>
---
 .../Library/PlatformBootManagerLib/BdsPlatform.c           | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/Platform/Intel/SimicsOpenBoardPkg/Library/PlatformBootManagerLib/BdsPlatform.c b/Platform/Intel/SimicsOpenBoardPkg/Library/PlatformBootManagerLib/BdsPlatform.c
index 953a4a6c15..926ed94ca1 100644
--- a/Platform/Intel/SimicsOpenBoardPkg/Library/PlatformBootManagerLib/BdsPlatform.c
+++ b/Platform/Intel/SimicsOpenBoardPkg/Library/PlatformBootManagerLib/BdsPlatform.c
@@ -338,10 +338,18 @@ PlatformBootManagerBeforeConsole (
   VOID
   )
 {
-//  EFI_HANDLE    Handle;
-//  EFI_STATUS    Status;
+  EFI_BOOT_MANAGER_LOAD_OPTION  *NvBootOptions;
+  UINTN                         NvBootOptionCount;
+  UINTN                         Index;
+  EFI_STATUS    Status;
+
+  DEBUG((EFI_D_INFO, "PlatformBootManagerBeforeConsole\n"));
+
+  NvBootOptions = EfiBootManagerGetLoadOptions(&NvBootOptionCount, LoadOptionTypeBoot);
+  for (Index = 0; Index < NvBootOptionCount; Index++) {
+    Status = EfiBootManagerDeleteLoadOptionVariable(NvBootOptions[Index].OptionNumber, LoadOptionTypeBoot);
+  }
 
-  DEBUG ((EFI_D_INFO, "PlatformBootManagerBeforeConsole\n"));
   InstallDevicePathCallback ();
 
   VisitAllInstancesOfProtocol (&gEfiPciRootBridgeIoProtocolGuid,
-- 
2.16.2.windows.1