Reviewed-by: Zhiguang Liu <zhiguang....@intel.com>
-----Original Message-----
From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Abner Chang
Sent: Friday, April 10, 2020 3:21 PM
To: devel@edk2.groups.io
Cc: abner.ch...@hpe.com; Gilbert Chen <gilbert.c...@hpe.com>; Leif Lindholm
<leif.lindh...@linaro.org>; Kinney, Michael D <michael.d.kin...@intel.com>;
Gao, Liming <liming....@intel.com>
Subject: [edk2-devel] [PATCH v1 7/9] MdePkg/BaseCpuLib: RISC-V Base CPU library
implementation.
Implement RISC-V CPU related functions in BaseCpuLib.
Signed-off-by: Abner Chang <abner.ch...@hpe.com>
Co-authored-by: Gilbert Chen <gilbert.c...@hpe.com>
Reviewed-by: Leif Lindholm <leif.lindh...@linaro.org>
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Cc: Leif Lindholm <leif.lindh...@linaro.org>
Cc: Gilbert Chen <gilbert.c...@hpe.com>
---
MdePkg/Library/BaseCpuLib/BaseCpuLib.inf | 6 +++++-
MdePkg/Library/BaseCpuLib/BaseCpuLib.uni | 5 +++--
MdePkg/Library/BaseCpuLib/RiscV/Cpu.S | 19 +++++++++++++++++++
3 files changed, 27 insertions(+), 3 deletions(-) create mode 100644
MdePkg/Library/BaseCpuLib/RiscV/Cpu.S
diff --git a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
index a7cb381a85..950f5229b2 100644
--- a/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
+++ b/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
@@ -7,6 +7,7 @@
# Copyright (c) 2007 - 2018, 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> # # SPDX-License-Identifier: BSD-2-Clause-Patent #@@ -24,7 +25,7
@@
#-# VALID_ARCHITECTURES = IA32 X64 EBC ARM AARCH64+#
VALID_ARCHITECTURES = IA32 X64 EBC ARM AARCH64 RISCV64 #
[Sources.IA32]@@ -59,6 +60,9 @@
AArch64/CpuFlushTlb.asm | MSFT AArch64/CpuSleep.asm | MSFT
+[Sources.RISCV64]+ RiscV/Cpu.S+ [Packages] MdePkg/MdePkg.dec diff --git
a/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
b/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
index fc95cda9fc..80dc495786 100644
--- a/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
+++ b/MdePkg/Library/BaseCpuLib/BaseCpuLib.uni
@@ -1,12 +1,13 @@
// /** @file // Instance of CPU Library for various architecture. //-// CPU
Library implemented using ASM functions for IA-32 and X64,+// CPU Library
implemented using ASM functions for IA-32, X64 and RISCV64, // 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> // // SPDX-License-Identifier:
BSD-2-Clause-Patent //@@ -15,5 +16,5 @@
#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 and X64,
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 and RISCV64, PAL CALLs for IPF, and empty functions for EBC." diff
--git a/MdePkg/Library/BaseCpuLib/RiscV/Cpu.S
b/MdePkg/Library/BaseCpuLib/RiscV/Cpu.S
new file mode 100644
index 0000000000..375b91d314
--- /dev/null
+++ b/MdePkg/Library/BaseCpuLib/RiscV/Cpu.S
@@ -0,0 +1,19 @@
+//------------------------------------------------------------------------------+//+//
CpuSleep for RISC-V+//+// Copyright (c) 2020, Hewlett Packard Enterprise
Development LP. All rights reserved.<BR>+// SPDX-License-Identifier:
BSD-2-Clause-Patent+//+//------------------------------------------------------------------------------+.data+.align
3+.section .text++.global ASM_PFX(_CpuSleep)++ASM_PFX(_CpuSleep):+ wfi+
ret++--
2.25.0
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