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author | Subrata Banik <subrata.banik@intel.com> | 2018-01-25 10:50:39 +0530 |
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committer | Subrata Banik <subrata.banik@intel.com> | 2018-01-31 05:56:07 +0000 |
commit | 8b9f28994a1b5702ce33e62e55d1595b1a056892 (patch) | |
tree | 6aad0300cdc18139fcdb2e15feb8b21e7cb404d2 /src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Timestamp.h | |
parent | bb1e539f1440bc805dd6350ffba9646454334b2f (diff) | |
download | coreboot-8b9f28994a1b5702ce33e62e55d1595b1a056892.tar.xz |
vendorcode/intel: Add UDK2017 support
This patch includes (edk2/UDK2017) all required headers for UDK2017
from EDK2 github project using below command
>> git clone https://github.com/tianocore/edk2.git vUDK2017
commit hash: 66833b2a87d98be8d81d1337c193bcbf0de47d47
Change-Id: If0d5a3fef016c67e9eed6aed9b698b3b13b930c4
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/23425
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Timestamp.h')
-rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Timestamp.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Timestamp.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Timestamp.h new file mode 100644 index 0000000000..9746903922 --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/Timestamp.h @@ -0,0 +1,101 @@ +/** @file + EFI Timestamp Protocol as defined in UEFI2.4 Specification. + Used to provide a platform independent interface for retrieving a high resolution timestamp counter. + + Copyright (c) 2013, 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. + + @par Revision Reference: + This Protocol is introduced in UEFI Specification 2.4 + +**/ + +#ifndef __EFI_TIME_STAMP_PROTOCOL_H__ +#define __EFI_TIME_STAMP_PROTOCOL_H__ + + +#define EFI_TIMESTAMP_PROTOCOL_GUID \ + { 0xafbfde41, 0x2e6e, 0x4262, {0xba, 0x65, 0x62, 0xb9, 0x23, 0x6e, 0x54, 0x95 } } + +/// +/// Declare forward reference for the Time Stamp Protocol +/// +typedef struct _EFI_TIMESTAMP_PROTOCOL EFI_TIMESTAMP_PROTOCOL; + +/// +/// EFI_TIMESTAMP_PROPERTIES +/// +typedef struct { + /// + /// The frequency of the timestamp counter in Hz. + /// + UINT64 Frequency; + /// + /// The value that the timestamp counter ends with immediately before it rolls over. + /// For example, a 64-bit free running counter would have an EndValue of 0xFFFFFFFFFFFFFFFF. + /// A 24-bit free running counter would have an EndValue of 0xFFFFFF. + /// + UINT64 EndValue; +} EFI_TIMESTAMP_PROPERTIES; + +/** + Retrieves the current value of a 64-bit free running timestamp counter. + + The counter shall count up in proportion to the amount of time that has passed. The counter value + will always roll over to zero. The properties of the counter can be retrieved from GetProperties(). + The caller should be prepared for the function to return the same value twice across successive calls. + The counter value will not go backwards other than when wrapping, as defined by EndValue in GetProperties(). + The frequency of the returned timestamp counter value must remain constant. Power management operations that + affect clocking must not change the returned counter frequency. The quantization of counter value updates may + vary as long as the value reflecting time passed remains consistent. + + @param None. + + @retval The current value of the free running timestamp counter. + +**/ +typedef +UINT64 +(EFIAPI *TIMESTAMP_GET)( + VOID + ); + +/** + Obtains timestamp counter properties including frequency and value limits. + + @param[out] Properties The properties of the timestamp counter. + + @retval EFI_SUCCESS The properties were successfully retrieved. + @retval EFI_DEVICE_ERROR An error occurred trying to retrieve the properties of the timestamp + counter subsystem. Properties is not pedated. + @retval EFI_INVALID_PARAMETER Properties is NULL. + +**/ +typedef +EFI_STATUS +(EFIAPI *TIMESTAMP_GET_PROPERTIES)( + OUT EFI_TIMESTAMP_PROPERTIES *Properties + ); + + + +/// +/// EFI_TIMESTAMP_PROTOCOL +/// The protocol provides a platform independent interface for retrieving a high resolution +/// timestamp counter. +/// +struct _EFI_TIMESTAMP_PROTOCOL { + TIMESTAMP_GET GetTimestamp; + TIMESTAMP_GET_PROPERTIES GetProperties; +}; + +extern EFI_GUID gEfiTimestampProtocolGuid; + +#endif + |