CC maintainers. > -----Original Message----- > From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of > Abner Chang > Sent: Monday, September 23, 2019 8:32 AM > To: devel@edk2.groups.io > Cc: Chang, Abner (HPS SW/FW Technologist) <abner.ch...@hpe.com> > Subject: [edk2-devel] [edk2-staging/RISC-V-V2 PATCH v2 11/29] > 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> > --- > 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 a7cb381..a95d8a0 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) 2016 - 2019, 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 fc95cda..85d56ce 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) 2019, 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 0000000..703b1e8 > --- /dev/null > +++ b/MdePkg/Library/BaseCpuLib/RiscV/Cpu.S > @@ -0,0 +1,19 @@ > +//--------------------------------------------------------------------- > +--------- > +// > +// CpuSleep for RISC-V > +// > +// Copyright (c) 2016 - 2019, 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 > + > + > -- > 2.7.4 > > >
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