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MdeModulePkg/DxeIplPeim : LoongArch DxeIPL implementation.

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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4053

Implement LoongArch DxeIPL instance.

Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Guomin Jiang <guomin.jiang@intel.com>

Signed-off-by: Chao Li <lichao@loongson.cn>
Co-authored-by: Baoqi Zhang <zhangbaoqi@loongson.cn>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
This commit is contained in:
Chao Li 2021-11-12 15:19:30 +08:00 committed by mergify[bot]
parent 380821a949
commit 2ce4bfb843
2 changed files with 68 additions and 1 deletions
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6
MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf
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@ -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

63
MdeModulePkg/Core/DxeIplPeim/LoongArch64/DxeLoadFunc.c Normal file
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@ -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
);
}