REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4053
Implement LoongArch DxeIPL instance.
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Guomin Jiang <guomin.ji...@intel.com>
Signed-off-by: Chao Li <lic...@loongson.cn>
Co-authored-by: Baoqi Zhang <zhangba...@loongson.cn>
---
MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | 6 +-
.../Core/DxeIplPeim/LoongArch64/DxeLoadFunc.c | 63 +++++++++++++++++++
2 files changed, 68 insertions(+), 1 deletion(-)
create mode 100644 MdeModulePkg/Core/DxeIplPeim/LoongArch64/DxeLoadFunc.c
diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
index 19b8a4c8ae..052ea0ec1a 100644
--- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
+++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
@@ -8,6 +8,7 @@
# Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
# Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights
reserved.<BR>
+# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights
reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -26,7 +27,7 @@
#
# The following information is for reference only and not required by the
build tools.
#
-# VALID_ARCHITECTURES = IA32 X64 EBC (EBC is for build only)
AARCH64 RISCV64
+# VALID_ARCHITECTURES = IA32 X64 EBC (EBC is for build only)
AARCH64 RISCV64 LOONGARCH64
#
[Sources]
@@ -53,6 +54,9 @@
[Sources.RISCV64]
RiscV64/DxeLoadFunc.c
+[Sources.LOONGARCH64]
+ LoongArch64/DxeLoadFunc.c
+
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
diff --git a/MdeModulePkg/Core/DxeIplPeim/LoongArch64/DxeLoadFunc.c
b/MdeModulePkg/Core/DxeIplPeim/LoongArch64/DxeLoadFunc.c
new file mode 100644
index 0000000000..95d3af19ea
--- /dev/null
+++ b/MdeModulePkg/Core/DxeIplPeim/LoongArch64/DxeLoadFunc.c
@@ -0,0 +1,63 @@
+/** @file
+ LoongArch specifc functionality for DxeLoad.
+
+ Copyright (c) 2022, Loongson Technology Corporation Limited. All rights
reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "DxeIpl.h"
+
+/**
+ Transfers control to DxeCore.
+
+ This function performs a CPU architecture specific operations to execute
+ the entry point of DxeCore with the parameters of HobList.
+ It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.
+
+ @param[in] DxeCoreEntryPoint The entry point of DxeCore.
+ @param[in] HobList The start of HobList passed to DxeCore.
+
+**/
+VOID
+HandOffToDxeCore (
+ IN EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint,
+ IN EFI_PEI_HOB_POINTERS HobList
+ )
+{
+ VOID *BaseOfStack;
+ VOID *TopOfStack;
+ EFI_STATUS Status;
+
+ //
+ // Allocate 128KB for the Stack
+ //
+ BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (STACK_SIZE));
+ ASSERT (BaseOfStack != NULL);
+
+ //
+ // Compute the top of the stack we were allocated. Pre-allocate a UINTN
+ // for safety.
+ //
+ TopOfStack = (VOID *)((UINTN)BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) *
EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);
+ TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);
+
+ //
+ // End of PEI phase signal
+ //
+ Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Update the contents of BSP stack HOB to reflect the real stack info
passed to DxeCore.
+ //
+ UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN)BaseOfStack, STACK_SIZE);
+
+ SwitchStack (
+ (SWITCH_STACK_ENTRY_POINT)(UINTN)DxeCoreEntryPoint,
+ HobList.Raw,
+ NULL,
+ TopOfStack
+ );
+}
--
2.27.0
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