Split Ebc from x64 implementation since x64 version supports to create x64 mode page...

[mirror_edk2.git] / MdeModulePkg / Core / DxeIplPeim / Ebc / DxeLoadFunc.c

diff --git a/MdeModulePkg/Core/DxeIplPeim/Ebc/DxeLoadFunc.c b/MdeModulePkg/Core/DxeIplPeim/Ebc/DxeLoadFunc.c
new file mode 100644 (file)
index 0000000..51055e1
--- /dev/null
+++ b/MdeModulePkg/Core/DxeIplPeim/Ebc/DxeLoadFunc.c
@@ -0,0 +1,73 @@
+/** @file\r
+  x64-specifc functionality for DxeLoad.\r
+\r
+Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
+All rights reserved. This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution.  The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include "DxeIpl.h"\r
+\r
+\r
+\r
+/**\r
+   Transfers control to DxeCore.\r
+\r
+   This function performs a CPU architecture specific operations to execute\r
+   the entry point of DxeCore with the parameters of HobList.\r
+   It also intalls EFI_END_OF_PEI_PPI to signal the end of PEI phase.\r
+\r
+   @param DxeCoreEntryPoint         The entrypoint of DxeCore.\r
+   @param HobList                   The start of HobList passed to DxeCore.\r
+\r
+**/\r
+VOID\r
+HandOffToDxeCore (\r
+  IN EFI_PHYSICAL_ADDRESS   DxeCoreEntryPoint,\r
+  IN EFI_PEI_HOB_POINTERS   HobList\r
+  )\r
+{\r
+  VOID                *BaseOfStack;\r
+  VOID                *TopOfStack;\r
+  EFI_STATUS          Status;\r
+\r
+  //\r
+  // Allocate 128KB for the Stack\r
+  //\r
+  BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));\r
+  ASSERT (BaseOfStack != NULL);\r
+\r
+  //\r
+  // Compute the top of the stack we were allocated. Pre-allocate a UINTN\r
+  // for safety.\r
+  //\r
+  TopOfStack = (VOID *) ((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);\r
+  TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);\r
+\r
+  //\r
+  // End of PEI phase singal\r
+  //\r
+  Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);\r
+  ASSERT_EFI_ERROR (Status);\r
+\r
+  //\r
+  // Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.\r
+  //    \r
+  UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN) BaseOfStack, STACK_SIZE);\r
+\r
+  //\r
+  // Transfer the control to the entry point of DxeCore.\r
+  //\r
+  SwitchStack (\r
+    (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,\r
+    HobList.Raw,\r
+    NULL,\r
+    TopOfStack\r
+    );\r
+}\r