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Diffstat (limited to 'IntelFrameworkPkg/Include/Ppi/ReadOnlyVariable.h')
-rw-r--r-- | IntelFrameworkPkg/Include/Ppi/ReadOnlyVariable.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/IntelFrameworkPkg/Include/Ppi/ReadOnlyVariable.h b/IntelFrameworkPkg/Include/Ppi/ReadOnlyVariable.h index 7c1c65470d..6e6c0873a5 100644 --- a/IntelFrameworkPkg/Include/Ppi/ReadOnlyVariable.h +++ b/IntelFrameworkPkg/Include/Ppi/ReadOnlyVariable.h @@ -1,5 +1,10 @@ /** @file
This file declares Read-only Variable Service PPI
+ These services provide a lightweight, read-only variant of the full EFI variable services. The
+ reason that these services are read-only is to reduce the complexity of flash management. Also,
+ some implementation of the PEI may use the same physical flash part for variable and PEIM
+ storage; as such, a write command to certain technologies would alter the contents of the entire part,
+ thus making the in situ PEIM execution not follow the required flow.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
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