BaseTools: Add authenticated variable store support

In order to support secure boot with authenticated type variable store
and non secure boot with normal type variable store, add one flag to
switch them.

User can append '-D VPD_AUTHENTICATED_VARIABLE_STORE' to build command
to enable authenticated type varaible store.

Also, user can add 'VPD_AUTHENTICATED_VARIABLE_STORE = TRUE/FALSE' to the
defines section of Dsc file to switch authenticated/normal type variable
store.

VPD_AUTHENTICATED_VARIABLE_STORE is a new reserved key word for this function.

Signed-off-by: Chen Lin Z <lin.z.chen@intel.com>
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

1 files changed, 54 insertions, 3 deletions

diff --git a/BaseTools/Source/Python/AutoGen/GenVar.py b/BaseTools/Source/Python/AutoGen/GenVar.py
index 591ef3df55..3f3dc69e90 100644
--- a/BaseTools/Source/Python/AutoGen/GenVar.py
+++ b/BaseTools/Source/Python/AutoGen/GenVar.py
@@ -15,6 +15,7 @@ from Common.VariableAttributes import VariableAttributes
 from Common.Misc import *

 import collections

 import Common.DataType as DataType

+import Common.GlobalData as GlobalData

 

 var_info = collections.namedtuple("uefi_var", "pcdindex,pcdname,defaultstoragename,skuname,var_name, var_guid, var_offset,var_attribute,pcd_default_value, default_value, data_type,PcdDscLine,StructurePcd")

 NvStorageHeaderSize = 28

@@ -173,11 +174,16 @@ class VariableMgr(object):
             offset += VariableHeaderSize + len(default_info.var_name.split(","))

             var_data_offset[default_info.pcdindex] = offset

             offset += data_size - len(default_info.var_name.split(","))

-

-            var_header_buffer = VariableMgr.PACK_VARIABLE_HEADER(var_attr_value, len(default_info.var_name.split(",")), len (default_data), vendorguid)

+            if GlobalData.gCommandLineDefines.get(TAB_DSC_DEFINES_VPD_AUTHENTICATED_VARIABLE_STORE,"FALSE").upper() == "TRUE":

+                var_header_buffer = VariableMgr.PACK_AUTHENTICATED_VARIABLE_HEADER(var_attr_value, len(default_info.var_name.split(",")), len (default_data), vendorguid)

+            else:

+                var_header_buffer = VariableMgr.PACK_VARIABLE_HEADER(var_attr_value, len(default_info.var_name.split(",")), len (default_data), vendorguid)

             NvStoreDataBuffer += (var_header_buffer + DataBuffer)

 

-        variable_storage_header_buffer = VariableMgr.PACK_VARIABLE_STORE_HEADER(len(NvStoreDataBuffer) + 28)

+        if GlobalData.gCommandLineDefines.get(TAB_DSC_DEFINES_VPD_AUTHENTICATED_VARIABLE_STORE,"FALSE").upper() == "TRUE":

+            variable_storage_header_buffer = VariableMgr.PACK_AUTHENTICATED_VARIABLE_STORE_HEADER(len(NvStoreDataBuffer) + 28)

+        else:

+            variable_storage_header_buffer = VariableMgr.PACK_VARIABLE_STORE_HEADER(len(NvStoreDataBuffer) + 28)

 

         nv_default_part = VariableMgr.AlignData(VariableMgr.PACK_DEFAULT_DATA(0, 0, VariableMgr.unpack_data(variable_storage_header_buffer+NvStoreDataBuffer)), 8)

 

@@ -252,6 +258,20 @@ class VariableMgr(object):
 

         return GuidBuffer + SizeBuffer + FormatBuffer + StateBuffer + reservedBuffer

 

+    def PACK_AUTHENTICATED_VARIABLE_STORE_HEADER(size):

+        #Signature: gEfiAuthenticatedVariableGuid

+        Guid = "{ 0xaaf32c78, 0x947b, 0x439a, { 0xa1, 0x80, 0x2e, 0x14, 0x4e, 0xc3, 0x77, 0x92 }}"

+        Guid = GuidStructureStringToGuidString(Guid)

+        GuidBuffer = PackGUID(Guid.split('-'))

+

+        SizeBuffer = pack('=L', size)

+        FormatBuffer = pack('=B', 0x5A)

+        StateBuffer = pack('=B', 0xFE)

+        reservedBuffer = pack('=H', 0)

+        reservedBuffer += pack('=L', 0)

+

+        return GuidBuffer + SizeBuffer + FormatBuffer + StateBuffer + reservedBuffer

+

     @staticmethod

     def PACK_NV_STORE_DEFAULT_HEADER(size, maxsize):

         Signature = pack('=B', ord('N'))

@@ -280,6 +300,37 @@ class VariableMgr(object):
         return Buffer

 

     @staticmethod

+    def PACK_AUTHENTICATED_VARIABLE_HEADER(attribute, namesize, datasize, vendorguid):

+

+        Buffer = pack('=H', 0x55AA)    # pack StartID

+        Buffer += pack('=B', 0x3F)     # pack State

+        Buffer += pack('=B', 0)        # pack reserved

+

+        Buffer += pack('=L', attribute)

+

+        Buffer += pack('=Q', 0)        # pack MonotonicCount

+        Buffer += pack('=HBBBBBBLhBB', # pack TimeStamp

+                         0,            # UINT16 Year

+                         0,            # UINT8  Month

+                         0,            # UINT8  Day

+                         0,            # UINT8  Hour

+                         0,            # UINT8  Minute

+                         0,            # UINT8  Second

+                         0,            # UINT8  Pad1

+                         0,            # UINT32 Nanosecond

+                         0,            # INT16  TimeZone

+                         0,            # UINT8  Daylight

+                         0)            # UINT8  Pad2

+        Buffer += pack('=L', 0)        # pack PubKeyIndex

+

+        Buffer += pack('=L', namesize)

+        Buffer += pack('=L', datasize)

+

+        Buffer += PackGUID(vendorguid)

+

+        return Buffer

+

+    @staticmethod

     def PACK_VARIABLES_DATA(var_value,data_type, tail = None):

         Buffer = bytearray()

         data_len = 0