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MdePkg: Add LoongArch64 local interrupt function set into BaseLib

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Adding LoongArch local interrupt function set, which is used to control
the opening or closing of the local interrupt when the global interrupt
is enabled.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584

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>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
This commit is contained in:
Chao Li
2023-10-12 11:08:16 +08:00
committed by Liming Gao
parent 57684402e4
commit 2ff435b264
3 changed files with 54 additions and 10 deletions
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22
MdePkg/Library/BaseLib/LoongArch64/EnableInterrupts.S
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@@ -1,21 +1,33 @@
#------------------------------------------------------------------------------
#
# LoongArch interrupt enable
# LoongArch interrupt enable operations
#
# Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
#include <Base.h>
#include <Register/LoongArch64/Csr.h>
ASM_GLOBAL ASM_PFX(EnableLocalInterrupts)
ASM_GLOBAL ASM_PFX(EnableInterrupts)
#/**
# Enables CPU interrupts.
# Enables local CPU interrupts.
#
# @param Needs to enable local interrupt bit.
#**/
ASM_PFX(EnableLocalInterrupts):
csrxchg $a0, $a0, LOONGARCH_CSR_ECFG
jirl $zero, $ra, 0
#/**
# Enables global CPU interrupts.
#**/
ASM_PFX(EnableInterrupts):
li.w $t0, 0x4
csrxchg $t0, $t0, 0x0
li.w $t0, BIT2
csrxchg $t0, $t0, LOONGARCH_CSR_CRMD
jirl $zero, $ra, 0
.end