X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseTimerLibLocalApic%2FBaseTimerLibLocalApic.msa;h=1b086b2841e313abc044410035e27ac9a71495c6;hp=c0affb8a292d635df87832c4447956863f2b1c09;hb=f3825a180a2297a701dda728a5f9e8dab6da65b6;hpb=885dc4d85a12851b2a01b50924c8891cb3c4f2eb

diff --git a/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa b/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa
index c0affb8a29..1b086b2841 100644
--- a/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa
+++ b/MdePkg/Library/BaseTimerLibLocalApic/BaseTimerLibLocalApic.msa
@@ -7,7 +7,9 @@
     <Version>1.0</Version>
     <Abstract>Component description file for Baser Timer Library</Abstract>
     <Description>Timer Library that only uses CPU resources to provide calibrated
-      delays on IA-32 and x64.</Description>
+      delays on IA-32 and x64. Note: Because CpuLocalApci timer could be programmed
+      by OS, it cannot be used by SMM drivers and runtime drivers, ACPI timer is
+      recommended for SMM drivers and runtime drivers.</Description>
     <Copyright>Copyright (c) 2006, Intel Corporation.</Copyright>
     <License>All rights reserved. This program and the accompanying materials
       are licensed and made available under the terms and conditions of the BSD License
@@ -23,7 +25,7 @@
     <OutputFileBasename>BaseTimerLibLocalApic</OutputFileBasename>
   </ModuleDefinitions>
   <LibraryClassDefinitions>
-    <LibraryClass Usage="ALWAYS_PRODUCED">
+    <LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="BASE SEC PEI_CORE PEIM DXE_CORE DXE_DRIVER UEFI_DRIVER UEFI_APPLICATION">
       <Keyword>TimerLib</Keyword>
     </LibraryClass>
     <LibraryClass Usage="ALWAYS_CONSUMED">
@@ -56,7 +58,7 @@
     <PcdEntry PcdItemType="FIXED_AT_BUILD" Usage="ALWAYS_CONSUMED">
       <C_Name>PcdFSBClock</C_Name>
       <TokenSpaceGuidCName>gEfiMdePkgTokenSpaceGuid</TokenSpaceGuidCName>
-      <HelpText>Bus speed on the platform, its unit is Hz.  its default value is 200000000, that means bus speed is 200Mhz.</HelpText>
+      <HelpText>This value is FSB Clock frequency. Its unit is Hz and its default value is 200000000, that means FSB frequency is 200Mhz.</HelpText>
     </PcdEntry>
   </PcdCoded>
 </ModuleSurfaceArea>
\ No newline at end of file