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

2 files changed, 6 insertions, 6 deletions

diff --git a/MdePkg/Library/BaseLib/Ia32/DisableCache.c b/MdePkg/Library/BaseLib/Ia32/DisableCache.c
index d2d028a93d..4ee3b88fdc 100644
--- a/MdePkg/Library/BaseLib/Ia32/DisableCache.c
+++ b/MdePkg/Library/BaseLib/Ia32/DisableCache.c
@@ -13,10 +13,10 @@
 **/

 

 /**

-  Disables caches.

+  Set CD bit and clear NW bit of CR0 followed by a WBINVD.

 

-  Set the CD bit of CR0 to 1, clear the NW bit of CR0 to 0, and flush all caches with a

-  WBINVD instruction.

+  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

diff --git a/MdePkg/Library/BaseLib/Ia32/EnableCache.c b/MdePkg/Library/BaseLib/Ia32/EnableCache.c
index 59e2b43213..dab89039f0 100644
--- a/MdePkg/Library/BaseLib/Ia32/EnableCache.c
+++ b/MdePkg/Library/BaseLib/Ia32/EnableCache.c
@@ -13,10 +13,10 @@
 **/

 

 /**

-  Enabled caches.

+  Perform a WBINVD and clear both the CD and NW bits of CR0.

 

-  Flush all caches with a WBINVD instruction, clear the CD bit of CR0 to 0, and clear 

-  the NW bit of CR0 to 0

+  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