SecurityPkg HashLibRouter: Avoid incorrect PcdTcg2HashAlgorithmBitmap

[mirror_edk2.git] / SecurityPkg / SecurityPkg.dec

diff --git a/SecurityPkg/SecurityPkg.dec b/SecurityPkg/SecurityPkg.dec
index b556fb68da1cc406772ffc3eaca2400de39ac403..07a66f5fac300f9507d401e924219c281bed1fe9 100644 (file)
--- a/SecurityPkg/SecurityPkg.dec
+++ b/SecurityPkg/SecurityPkg.dec
@@ -462,6 +462,10 @@
   ## This PCD indicated final BIOS supported Hash mask.\r
   #    Bios may choose to register a subset of PcdTpm2HashMask.\r
   #    So this PCD is final value of how many hash algo is extended to PCR.\r
+  # If software HashLib(HashLibBaseCryptoRouter) solution is chosen, this PCD\r
+  # has no need to be configured in platform dsc and will be set to correct\r
+  # value by the HashLib instance according to the HashInstanceLib instances\r
+  # linked, and the value of this PCD should be got in module entrypoint.\r
   # @Prompt Hash Algorithm bitmap.\r
   gEfiSecurityPkgTokenSpaceGuid.PcdTcg2HashAlgorithmBitmap|0xFFFFFFFF|UINT32|0x00010016\r
   \r