binman: fit: Allow providing FDT filenames in a directory

In some cases the list of available FDT files is not available in an
entryarg. Provide an option to point to a directory containing them
instead.

Signed-off-by: Simon Glass <sjg@chromium.org>

tools/binman/entries.rst

@@ -857,6 +857,13 @@ The top-level 'fit' node supports the following special properties:
 
             fit,fdt-list-val = "dtb1", "dtb2";
 
+    fit,fdt-list-dir
+        As an alternative to fit,fdt-list the list of device tree files
+        can be provided as a directory. Each .dtb file in the directory is
+        processed, , e.g.::
+
+            fit,fdt-list-dir = "arch/arm/dts
+
 Substitutions
 ~~~~~~~~~~~~~
 

tools/binman/etype/fit.py

@@ -5,7 +5,9 @@
 
 """Entry-type module for producing a FIT"""
 
+import glob
 import libfdt
+import os
 
 from binman.entry import Entry, EntryArg
 from binman.etype.section import Entry_section
@@ -87,6 +89,13 @@ class Entry_fit(Entry_section):
 
                 fit,fdt-list-val = "dtb1", "dtb2";
 
+        fit,fdt-list-dir
+            As an alternative to fit,fdt-list the list of device tree files
+            can be provided as a directory. Each .dtb file in the directory is
+            processed, , e.g.::
+
+                fit,fdt-list-dir = "arch/arm/dts
+
     Substitutions
     ~~~~~~~~~~~~~
 
@@ -352,6 +361,7 @@ class Entry_fit(Entry_section):
         self._fit = None
         self._fit_props = {}
         self._fdts = None
+        self._fdt_dir = None
         self.mkimage = None
         self._priv_entries = {}
         self._loadables = []
@@ -368,7 +378,14 @@ class Entry_fit(Entry_section):
             if fdts is not None:
                 self._fdts = fdts.split()
         else:
-            self._fdts = fdt_util.GetStringList(self._node, 'fit,fdt-list-val')
+            self._fdt_dir = fdt_util.GetString(self._node, 'fit,fdt-list-dir')
+            if self._fdt_dir:
+                indir = tools.get_input_filename(self._fdt_dir)
+                fdts = glob.glob('*.dtb', root_dir=indir)
+                self._fdts = [os.path.splitext(f)[0] for f in sorted(fdts)]
+            else:
+                self._fdts = fdt_util.GetStringList(self._node,
+                                                    'fit,fdt-list-val')
 
         self._fit_default_dt = self.GetEntryArgsOrProps([EntryArg('default-dt',
                                                                   str)])[0]

tools/binman/ftest.py

@@ -4181,8 +4181,8 @@ class TestFunctional(unittest.TestCase):
         data = self._DoReadFile('172_scp.dts')
         self.assertEqual(SCP_DATA, data[:len(SCP_DATA)])
 
-    def testFitFdt(self):
-        """Test an image with an FIT with multiple FDT images"""
+    def CheckFitFdt(self, dts='170_fit_fdt.dts', use_fdt_list=True):
+        """Check an image with an FIT with multiple FDT images"""
         def _CheckFdt(seq, expected_data):
             """Check the FDT nodes
 
@@ -4221,11 +4221,12 @@ class TestFunctional(unittest.TestCase):
             self.assertEqual('fdt-%d' % seq, fnode.props['fdt'].value)
 
         entry_args = {
-            'of-list': 'test-fdt1 test-fdt2',
             'default-dt': 'test-fdt2',
         }
+        if use_fdt_list:
+            entry_args['of-list'] = 'test-fdt1 test-fdt2'
         data = self._DoReadFileDtb(
-            '170_fit_fdt.dts',
+            dts,
             entry_args=entry_args,
             extra_indirs=[os.path.join(self._indir, TEST_FDT_SUBDIR)])[0]
         self.assertEqual(U_BOOT_NODTB_DATA, data[-len(U_BOOT_NODTB_DATA):])
@@ -4244,6 +4245,10 @@ class TestFunctional(unittest.TestCase):
         _CheckConfig(1, TEST_FDT1_DATA)
         _CheckConfig(2, TEST_FDT2_DATA)
 
+    def testFitFdt(self):
+        """Test an image with an FIT with multiple FDT images"""
+        self.CheckFitFdt()
+
     def testFitFdtMissingList(self):
         """Test handling of a missing 'of-list' entry arg"""
         with self.assertRaises(ValueError) as e:
@@ -7605,6 +7610,10 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
         self.assertIn("Invalid U-Boot phase 'bad-phase': Use tpl/vpl/spl",
                       str(e.exception))
 
+    def testFitFdtListDir(self):
+        """Test an image with an FIT with FDT images using fit,fdt-list-dir"""
+        self.CheckFitFdt('333_fit_fdt_dir.dts', False)
+
 
 if __name__ == "__main__":
     unittest.main()

tools/binman/test/333_fit_fdt_dir.dts

@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		u-boot {
+		};
+		fit {
+			description = "test-desc";
+			#address-cells = <1>;
+			fit,fdt-list-dir = "fdts";
+
+			images {
+				kernel {
+					description = "Vanilla Linux kernel";
+					type = "kernel";
+					arch = "ppc";
+					os = "linux";
+					compression = "gzip";
+					load = <00000000>;
+					entry = <00000000>;
+					hash-1 {
+						algo = "crc32";
+					};
+					hash-2 {
+						algo = "sha1";
+					};
+					u-boot {
+					};
+				};
+				@fdt-SEQ {
+					description = "fdt-NAME.dtb";
+					type = "flat_dt";
+					compression = "none";
+					hash {
+						algo = "sha256";
+					};
+				};
+			};
+
+			configurations {
+				default = "@config-DEFAULT-SEQ";
+				@config-SEQ {
+					description = "conf-NAME.dtb";
+					firmware = "uboot";
+					loadables = "atf";
+					fdt = "fdt-SEQ";
+				};
+			};
+		};
+		u-boot-nodtb {
+		};
+	};
+};