--- /dev/null
+/** @file\r
+ LoongArch specifc functionality for DxeLoad.\r
+\r
+ Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>\r
+\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#include "DxeIpl.h"\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 installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.\r
+\r
+ @param[in] DxeCoreEntryPoint The entry point of DxeCore.\r
+ @param[in] 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 signal\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
+ SwitchStack (\r
+ (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,\r
+ HobList.Raw,\r
+ NULL,\r
+ TopOfStack\r
+ );\r
+}\r