diff options
Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/IntelFsp2Pkg/Include/Library/CacheLib.h')
-rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/IntelFsp2Pkg/Include/Library/CacheLib.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/IntelFsp2Pkg/Include/Library/CacheLib.h b/src/vendorcode/intel/edk2/UDK2017/IntelFsp2Pkg/Include/Library/CacheLib.h new file mode 100644 index 0000000000..ef9970dc1a --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/IntelFsp2Pkg/Include/Library/CacheLib.h @@ -0,0 +1,62 @@ +/** @file + + Copyright (c) 2014, Intel Corporation. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php. + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#ifndef _CACHE_LIB_H_ +#define _CACHE_LIB_H_ + +// +// EFI_MEMORY_CACHE_TYPE +// +typedef INT32 EFI_MEMORY_CACHE_TYPE; + +#define EFI_CACHE_UNCACHEABLE 0 +#define EFI_CACHE_WRITECOMBINING 1 +#define EFI_CACHE_WRITETHROUGH 4 +#define EFI_CACHE_WRITEPROTECTED 5 +#define EFI_CACHE_WRITEBACK 6 + +/** + Reset all the MTRRs to a known state. + + @retval EFI_SUCCESS All MTRRs have been reset successfully. + +**/ +EFI_STATUS +EFIAPI +ResetCacheAttributes ( + VOID + ); + +/** + Given the memory range and cache type, programs the MTRRs. + + @param[in] MemoryAddress Base Address of Memory to program MTRR. + @param[in] MemoryLength Length of Memory to program MTRR. + @param[in] MemoryCacheType Cache Type. + + @retval EFI_SUCCESS Mtrr are set successfully. + @retval EFI_LOAD_ERROR No empty MTRRs to use. + @retval EFI_INVALID_PARAMETER The input parameter is not valid. + @retval others An error occurs when setting MTTR. + +**/ +EFI_STATUS +EFIAPI +SetCacheAttributes ( + IN EFI_PHYSICAL_ADDRESS MemoryAddress, + IN UINT64 MemoryLength, + IN EFI_MEMORY_CACHE_TYPE MemoryCacheType + ); + +#endif + |