binman: Add x86 support for starting TPL

Sometimes we want to include TPL for x86 platforms, such as when we want
to select between different SPL images (e.g. for Chrome OS verified boot).
Add support for this.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index d956bd4..3f4f5f3 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -39,6 +39,7 @@
 U_BOOT_TPL_DTB_DATA   = 'tpldtb'
 X86_START16_DATA      = 'start16'
 X86_START16_SPL_DATA  = 'start16spl'
+X86_START16_TPL_DATA  = 'start16tpl'
 U_BOOT_NODTB_DATA     = 'nodtb with microcode pointer somewhere in here'
 U_BOOT_SPL_NODTB_DATA = 'splnodtb with microcode pointer somewhere in here'
 FSP_DATA              = 'fsp'
@@ -92,6 +93,8 @@
         TestFunctional._MakeInputFile('u-boot-x86-16bit.bin', X86_START16_DATA)
         TestFunctional._MakeInputFile('spl/u-boot-x86-16bit-spl.bin',
                                       X86_START16_SPL_DATA)
+        TestFunctional._MakeInputFile('tpl/u-boot-x86-16bit-tpl.bin',
+                                      X86_START16_TPL_DATA)
         TestFunctional._MakeInputFile('u-boot-nodtb.bin', U_BOOT_NODTB_DATA)
         TestFunctional._MakeInputFile('spl/u-boot-spl-nodtb.bin',
                                       U_BOOT_SPL_NODTB_DATA)
@@ -964,7 +967,7 @@
                       str(e.exception))
 
     def testPackStart16Spl(self):
-        """Test that an image with an x86 start16 region can be created"""
+        """Test that an image with an x86 start16 SPL region can be created"""
         data = self._DoReadFile('48_x86-start16-spl.dts')
         self.assertEqual(X86_START16_SPL_DATA, data[:len(X86_START16_SPL_DATA)])
 
@@ -1376,6 +1379,11 @@
         self.assertIn("Node '/binman/text': No value provided for text label "
                       "'test-id'", str(e.exception))
 
+    def testPackStart16Tpl(self):
+        """Test that an image with an x86 start16 TPL region can be created"""
+        data = self._DoReadFile('81_x86-start16-tpl.dts')
+        self.assertEqual(X86_START16_TPL_DATA, data[:len(X86_START16_TPL_DATA)])
+
 
 if __name__ == "__main__":
     unittest.main()