diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c new file mode 100644 index 0000000000..3ba7a35096 --- /dev/null +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.c @@ -0,0 +1,37 @@ +/** @file + Null instance of CPU Library. + + Copyright (c) 2020, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +/** + Places the CPU in a sleep state until an interrupt is received. + + Places the CPU in a sleep state until an interrupt is received. If interrupts + are disabled prior to calling this function, then the CPU will be placed in a + sleep state indefinitely. + +**/ +VOID +EFIAPI +CpuSleep ( + VOID + ) +{ +} + +/** + Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU. + + Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU. + +**/ +VOID +EFIAPI +CpuFlushTlb ( + VOID + ) +{ +} diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf new file mode 100644 index 0000000000..a9e8399038 --- /dev/null +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf @@ -0,0 +1,26 @@ +## @file +# Null instance of CPU Library. +# +# Copyright (c) 2020, Intel Corporation. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = BaseCpuLibNull + MODULE_UNI_FILE = BaseCpuLibNull.uni + FILE_GUID = 8A29AAA5-0FB7-44CC-8709-1344FE89B878 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = CpuLib + +# +# VALID_ARCHITECTURES = IA32 X64 EBC ARM AARCH64 RISCV64 +# + +[Sources] + BaseCpuLibNull.c + +[Packages] + MdePkg/MdePkg.dec diff --git a/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.uni b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.uni new file mode 100644 index 0000000000..1030221d5c --- /dev/null +++ b/MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.uni @@ -0,0 +1,11 @@ +// /** @file +// Null instance of CPU Library. +// +// Copyright (c) 2020, Intel Corporation. All rights reserved.
+// SPDX-License-Identifier: BSD-2-Clause-Patent +// +// **/ + +#string STR_MODULE_ABSTRACT #language en-US "Null Instance of CPU Library" + +#string STR_MODULE_DESCRIPTION #language en-US "Null instance of CPU Library." diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc index 6cd38e7ec3..3abe65ec7f 100644 --- a/MdePkg/MdePkg.dsc +++ b/MdePkg/MdePkg.dsc @@ -1,7 +1,7 @@ ## @file # EFI/PI MdePkg Package # -# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.
+# Copyright (c) 2007 - 2020, Intel Corporation. All rights reserved.
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
# (C) Copyright 2020 Hewlett Packard Enterprise Development LP
# @@ -36,6 +36,7 @@ MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.inf MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf MdePkg/Library/BaseCpuLib/BaseCpuLib.inf + MdePkg/Library/BaseCpuLibNull/BaseCpuLibNull.inf MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf