diff options
| author | qhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-12-03 02:19:49 +0000 |
|---|---|---|
| committer | qhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-12-03 02:19:49 +0000 |
| commit | be5f16148584b0d771bdab651455cd9e27f556ce (patch) | |
| tree | 3ef631d9392cdd3ff1c3f3876a9596c66ad9586a /MdePkg/Include/Library | |
| parent | f90eb36c1558f2728843bd81bda4958aaa4236a6 (diff) | |
| download | edk2-platforms-be5f16148584b0d771bdab651455cd9e27f556ce.tar.xz | |
Add AsmEnableCache() and AsmDisableCache() as the IA32 & x64 specific BaseLib API.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6807 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Include/Library')
| -rw-r--r-- | MdePkg/Include/Library/BaseLib.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h index 4ffddfd5f6..3cb2cdb154 100644 --- a/MdePkg/Include/Library/BaseLib.h +++ b/MdePkg/Include/Library/BaseLib.h @@ -5213,6 +5213,34 @@ AsmCpuidEx ( /**
+ Set CD bit and clear NW bit of CR0 followed by a WBINVD.
+
+ Disables the caches by setting the CD bit of CR0 to 1, clearing the NW bit of CR0 to 0,
+ and executing a WBINVD instruction. This function is only available on IA-32 and x64.
+
+**/
+VOID
+EFIAPI
+AsmDisableCache (
+ VOID
+ );
+
+
+/**
+ Perform a WBINVD and clear both the CD and NW bits of CR0.
+
+ Enables the caches by executing a WBINVD instruction and then clear both the CD and NW
+ bits of CR0 to 0. This function is only available on IA-32 and x64.
+
+**/
+VOID
+EFIAPI
+AsmEnableCache (
+ VOID
+ );
+
+
+/**
Returns the lower 32-bits of a Machine Specific Register(MSR).
Reads and returns the lower 32-bits of the MSR specified by Index.
|