DxeLoadFunc.c is almost the same as RISC-V instance. However, I don't have idea
how to leverage it because DxeLoadFunc is currently in the architecture-based
folder.
Acked-by: Abner Chang <abner.ch...@hpe.com>
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Chao Li
> Sent: Wednesday, February 9, 2022 4:02 PM
> To: devel@edk2.groups.io
> Cc: Liming Gao <gaolim...@byosoft.com.cn>; Guomin Jiang
> <guomin.ji...@intel.com>; Baoqi Zhang <zhangba...@loongson.cn>
> Subject: [edk2-devel] [staging/LoongArch RESEND PATCH v1 30/33]
> MdeModulePkg/DxeIplPeim : LoongArch DxeIPL implementation.
>
> 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 | 61
> +++++++++++++++++++
> 2 files changed, 66 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..27ffc072d0
> --- /dev/null
> +++ b/MdeModulePkg/Core/DxeIplPeim/LoongArch64/DxeLoadFunc.c
> @@ -0,0 +1,61 @@
> +/** @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 DxeCoreEntryPoint The entry point of DxeCore.
> + @param 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 singal
> + //
> + 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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