diff options
Diffstat (limited to 'MdePkg/Include/Protocol/Variable.h')
| -rw-r--r-- | MdePkg/Include/Protocol/Variable.h | 42 |
1 files changed, 18 insertions, 24 deletions
diff --git a/MdePkg/Include/Protocol/Variable.h b/MdePkg/Include/Protocol/Variable.h index c9e86026f7ae..c20934471206 100644 --- a/MdePkg/Include/Protocol/Variable.h +++ b/MdePkg/Include/Protocol/Variable.h @@ -1,33 +1,27 @@ /** @file Variable Architectural Protocol as defined in PI Specification VOLUME 2 DXE - This provides the services required to get and set environment variables. This - protocol must be produced by a runtime DXE driver and may be consumed only by - the DXE Foundation. The DXE driver that produces this protocol must be a runtime - driver. This driver is responsible for initializing the GetVariable(), + This provides the services required to get and set environment variables. This + protocol must be produced by a runtime DXE driver and may be consumed only by + the DXE Foundation. The DXE driver that produces this protocol must be a runtime + driver. This driver is responsible for initializing the GetVariable(), GetNextVariableName(), and SetVariable() fields of the UEFI Runtime Services Table. - After the three fields of the UEFI Runtime Services Table have been initialized, - the driver must install the EFI_VARIABLE_ARCH_PROTOCOL_GUID on a new handle with - a NULL interface pointer. The installation of this protocol informs the DXE Foundation - that the read-only and the volatile environment variable related services are - now available and that the DXE Foundation must update the 32-bit CRC of the UEFI - Runtime Services Table. The full complement of environment variable services are - not available until both this protocol and EFI_VARIABLE_WRITE_ARCH_PROTOCOL are - installed. DXE drivers that require read-only access or read/write access to volatile - environment variables must have this architectural protocol in their dependency - expressions. DXE drivers that require write access to nonvolatile environment - variables must have the EFI_VARIABLE_WRITE_ARCH_PROTOCOL in their dependency + After the three fields of the UEFI Runtime Services Table have been initialized, + the driver must install the EFI_VARIABLE_ARCH_PROTOCOL_GUID on a new handle with + a NULL interface pointer. The installation of this protocol informs the DXE Foundation + that the read-only and the volatile environment variable related services are + now available and that the DXE Foundation must update the 32-bit CRC of the UEFI + Runtime Services Table. The full complement of environment variable services are + not available until both this protocol and EFI_VARIABLE_WRITE_ARCH_PROTOCOL are + installed. DXE drivers that require read-only access or read/write access to volatile + environment variables must have this architectural protocol in their dependency + expressions. DXE drivers that require write access to nonvolatile environment + variables must have the EFI_VARIABLE_WRITE_ARCH_PROTOCOL in their dependency expressions. - Copyright (c) 2006 - 2008, 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. + Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -42,4 +36,4 @@ extern EFI_GUID gEfiVariableArchProtocolGuid; -#endif +#endif |