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MdePkg/BaseCpuLib: LoongArch Base CPU library implementation. 

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>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Chao Li 2021-11-11 20:14:20 +08:00 committed by mergify[bot]
parent dbbb045ff1
commit f89815a125
4 changed files with 39 additions and 3 deletions
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7
MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
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@ -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

5
MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
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@ -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."

15
MdePkg/Library/BaseCpuLib/LoongArch/CpuFlushTlb.S Normal file
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@ -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

15
MdePkg/Library/BaseCpuLib/LoongArch/CpuSleep.S Normal file
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@ -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