diff --git a/build_tools/blob.py b/build_tools/blob.py
new file mode 100644
index 0000000000..3d93c45cc8
--- /dev/null
+++ b/build_tools/blob.py
@@ -0,0 +1,41 @@
+# Copyright 2021 Google, Inc.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import array
+import functools
+
+def bytesToCppArray(code, symbol, data):
+    '''
+    Output an array of bytes to a code formatter as a c++ array declaration.
+    '''
+    code('const std::uint8_t ${symbol}[] = {')
+    code.indent()
+    step = 16
+    for i in range(0, len(data), step):
+        x = array.array('B', data[i:i+step])
+        strs = map(lambda i: f'{i},', x)
+        code(functools.reduce(lambda x, y: x + y, strs))
+    code.dedent()
+    code('};')
diff --git a/site_scons/gem5_scons/builders/blob.py b/site_scons/gem5_scons/builders/blob.py
index fe74fcdc7b..20d804a2e9 100644
--- a/site_scons/gem5_scons/builders/blob.py
+++ b/site_scons/gem5_scons/builders/blob.py
@@ -40,7 +40,7 @@
 import os.path
 
 from gem5_scons import Transform, MakeAction
-from gem5_scons.util import bytesToCppArray
+from blob import bytesToCppArray
 
 from code_formatter import code_formatter
 
diff --git a/site_scons/gem5_scons/util.py b/site_scons/gem5_scons/util.py
index 6049fedab2..b62cc0164e 100644
--- a/site_scons/gem5_scons/util.py
+++ b/site_scons/gem5_scons/util.py
@@ -38,8 +38,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import array
-import functools
 import itertools
 import re
 import sys
@@ -111,17 +109,3 @@ def compareVersions(v1, v2):
         if n1 > n2: return  1
 
     return 0
-
-def bytesToCppArray(code, symbol, data):
-    '''
-    Output an array of bytes to a code formatter as a c++ array declaration.
-    '''
-    code('const std::uint8_t ${symbol}[] = {')
-    code.indent()
-    step = 16
-    for i in range(0, len(data), step):
-        x = array.array('B', data[i:i+step])
-        strs = map(lambda i: f'{i},', x)
-        code(functools.reduce(lambda x, y: x + y, strs))
-    code.dedent()
-    code('};')
diff --git a/src/SConscript b/src/SConscript
index 2b7cafbe6e..24acf400c9 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -54,7 +54,7 @@ import SCons
 
 from gem5_scons import Transform, warning, error, ToValue, FromValue
 from gem5_scons.sources import *
-from gem5_scons.util import bytesToCppArray
+from blob import bytesToCppArray
 
 Export(SourceFilter.factories)