Hi Mike, Liming and Zhiguang,
This patch has not been reviewed, would you please review it?

Thanks,
Chao
--------

On 9月 14 2022, at 5:41 下午, Chao Li <lichao@loongson.cn> wrote:
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4053
>
> Implement LoongArch CPU related functions in BaseCpuLib.
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Zhiguang Liu <zhiguang.liu@intel.com>
>
> Signed-off-by: Chao Li <lichao@loongson.cn>
> ---
> MdePkg/Library/BaseCpuLib/BaseCpuLib.inf | 7 ++++++-
> MdePkg/Library/BaseCpuLib/BaseCpuLib.uni | 5 +++--
> MdePkg/Library/BaseCpuLib/LoongArch/CpuFlushTlb.S | 15 +++++++++++++++
> MdePkg/Library/BaseCpuLib/LoongArch/CpuSleep.S | 15 +++++++++++++++
> 4 files changed, 39 insertions(+), 3 deletions(-)
> create mode 100644 MdePkg/Library/BaseCpuLib/LoongArch/CpuFlushTlb.S
> create mode 100644 MdePkg/Library/BaseCpuLib/LoongArch/CpuSleep.S
>
> diff --git a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> index c4cd29a783..6b230f6e6d 100644
> --- a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> +++ b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> @@ -8,6 +8,7 @@
> # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
>
> # Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
> # Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
> +# Portions Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
> #
> # SPDX-License-Identifier: BSD-2-Clause-Patent
> #
> @@ -25,7 +26,7 @@
>
>
>
> #
> -# VALID_ARCHITECTURES = IA32 X64 EBC ARM AARCH64 RISCV64
> +# VALID_ARCHITECTURES = IA32 X64 EBC ARM AARCH64 RISCV64 LOONGARCH64
> #
>
>
> [Sources.IA32]
> @@ -61,6 +62,10 @@
> [Sources.RISCV64]
>
> RiscV/Cpu.S
>
>
> +[Sources.LOONGARCH64]
> + LoongArch/CpuFlushTlb.S | GCC
> + LoongArch/CpuSleep.S | GCC
> +
> [Packages]
> MdePkg/MdePkg.dec
>
>
> diff --git a/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni b/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
> index 80dc495786..7c5c8dfb37 100644
> --- a/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
> +++ b/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
> @@ -1,13 +1,14 @@
> // /** @file
>
> // Instance of CPU Library for various architecture.
> //
> -// CPU Library implemented using ASM functions for IA-32, X64 and RISCV64,
> +// CPU Library implemented using ASM functions for IA-32, X64, RISCV64 and LoongArch64,
> // PAL CALLs for IPF, and empty functions for EBC.
> //
> // Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
> // Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
> // Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
> // Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
> +// Portions Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
> //
> // SPDX-License-Identifier: BSD-2-Clause-Patent
> //
> @@ -16,5 +17,5 @@
>
> #string STR_MODULE_ABSTRACT #language en-US "Instance of CPU Library for various architectures"
>
>
> -#string STR_MODULE_DESCRIPTION #language en-US "CPU Library implemented using ASM functions for IA-32, X64 and RISCV64, PAL CALLs for IPF, and empty functions for EBC."
> +#string STR_MODULE_DESCRIPTION #language en-US "CPU Library implemented using ASM functions for IA-32, X64, RISCV64 and LoongArch64, PAL CALLs for IPF, and empty functions for EBC."
>
>
> diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/CpuFlushTlb.S b/MdePkg/Library/BaseCpuLib/LoongArch/CpuFlushTlb.S
> new file mode 100644
> index 0000000000..8b792f0a37
> --- /dev/null
> +++ b/MdePkg/Library/BaseCpuLib/LoongArch/CpuFlushTlb.S
> @@ -0,0 +1,15 @@
> +#------------------------------------------------------------------------------
>
> +#
> +# CpuFlushTlb() for LoongArch64
> +#
> +# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +#------------------------------------------------------------------------------
> +ASM_GLOBAL ASM_PFX(CpuFlushTlb)
> +
> +ASM_PFX(CpuFlushTlb):
> + tlbflush
> + jirl $zero, $ra, 0
> + .end
> diff --git a/MdePkg/Library/BaseCpuLib/LoongArch/CpuSleep.S b/MdePkg/Library/BaseCpuLib/LoongArch/CpuSleep.S
> new file mode 100644
> index 0000000000..eb31b10714
> --- /dev/null
> +++ b/MdePkg/Library/BaseCpuLib/LoongArch/CpuSleep.S
> @@ -0,0 +1,15 @@
> +#------------------------------------------------------------------------------
>
> +#
> +# CpuSleep() for LoongArch64
> +#
> +# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +#------------------------------------------------------------------------------
> +ASM_GLOBAL ASM_PFX(CpuSleep)
> +
> +ASM_PFX(CpuSleep):
> + idle 0
> + jirl $zero, $ra, 0
> + .end
> --
> 2.27.0
>