IntelFsp2Pkg-BaseFspCommonLib: Add funtion to return the reset required status

[mirror_edk2.git] / IntelFsp2Pkg / Library / BaseFspCommonLib / FspCommonLib.c

diff --git a/IntelFsp2Pkg/Library/BaseFspCommonLib/FspCommonLib.c b/IntelFsp2Pkg/Library/BaseFspCommonLib/FspCommonLib.c
index 151b1893433d726316586dd91ddae38a4c8e2899..0c5f0b306ea4a187ea86b60abf6d843216ce595f 100644 (file)
--- a/IntelFsp2Pkg/Library/BaseFspCommonLib/FspCommonLib.c
+++ b/IntelFsp2Pkg/Library/BaseFspCommonLib/FspCommonLib.c
@@ -18,6 +18,7 @@
 #include <FspGlobalData.h>\r
 #include <FspEas.h>\r
 #include <FspDataTable.h>\r
+#include <Library/FspSwitchStackLib.h>\r
 \r
 #pragma pack(1)\r
 \r
@@ -544,3 +545,31 @@ GetFspCarSize (
   }\r
   return CarSize;\r
 }\r
+\r
+/**\r
+  This function updates the return status of the FSP API with requested reset type and returns to Boot Loader.\r
+\r
+  @param[in] FspResetType     Reset type that needs to returned as API return status\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+FspApiReturnStatusReset (\r
+  IN UINT32   FspResetType\r
+  )\r
+{\r
+  volatile BOOLEAN  LoopUntilReset;\r
+  \r
+  LoopUntilReset = TRUE;\r
+  DEBUG ((DEBUG_INFO, "FSP returning control to Bootloader with reset required return status %x\n",FspResetType));\r
+  ///\r
+  /// Below code is not an infinite loop.The control will go back to API calling function in BootLoader each time BootLoader\r
+  /// calls the FSP API without honoring the reset request by FSP\r
+  ///\r
+  do {\r
+    SetFspApiReturnStatus ((EFI_STATUS)FspResetType);\r
+    Pei2LoaderSwitchStack ();\r
+    DEBUG ((DEBUG_ERROR, "!!!ERROR: FSP has requested BootLoader for reset. But BootLoader has not honored the reset\n"));\r
+    DEBUG ((DEBUG_ERROR, "!!!ERROR: Please add support in BootLoader to honour the reset request from FSP\n"));\r
+  } while (LoopUntilReset);\r
+}\r