binman: Allow entry types to override FDT contents

At present the contents of an FDT (for each phase) are fixed,
determined by the build and provided to Binman as input files.

Provide a means for entry types to provide their own FDT, so that it can
be processed, if needed.

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

diff --git a/tools/binman/entry.py b/tools/binman/entry.py
index 752c584c9a3cbd6e429042fe8da97d5d09590268..494b1b1278d67669a240610e1be8ae6152b0b8cb 100644 (file)
--- a/tools/binman/entry.py
+++ b/tools/binman/entry.py
@@ -1386,3 +1386,15 @@ features to produce new behaviours.
 
     def UpdateSignatures(self, privatekey_fname, algo, input_fname):
         self.Raise('Updating signatures is not supported with this entry type')
+
+    def FdtContents(self, fdt_etype):
+        """Get the contents of an FDT for a particular phase
+
+        Args:
+            fdt_etype (str): Filename of the phase of the FDT to return, e.g.
+                'u-boot-tpl-dtb'
+
+        Returns:
+            bytes: Contents of requested FDT
+        """
+        return self.section.FdtContents(fdt_etype)

diff --git a/tools/binman/etype/blob_dtb.py b/tools/binman/etype/blob_dtb.py
index 1471ded221194fd2ed9a2345332514cbc17b06be..b234323d7cfccbd0685e78dbdd7c2ce2b4f2ad64 100644 (file)
--- a/tools/binman/etype/blob_dtb.py
+++ b/tools/binman/etype/blob_dtb.py
@@ -41,12 +41,12 @@ class Entry_blob_dtb(Entry_blob):
     def ObtainContents(self, fake_size=0):
         """Get the device-tree from the list held by the 'state' module"""
         self._filename = self.GetDefaultFilename()
-        self._pathname, _ = state.GetFdtContents(self.GetFdtEtype())
+        self._pathname, _ = self.FdtContents(self.GetFdtEtype())
         return super().ReadBlobContents()
 
     def ProcessContents(self):
         """Re-read the DTB contents so that we get any calculated properties"""
-        _, indata = state.GetFdtContents(self.GetFdtEtype())
+        _, indata = self.FdtContents(self.GetFdtEtype())
 
         if self.compress == 'zstd' and self.prepend != 'length':
             self.Raise('The zstd compression requires a length header')

diff --git a/tools/binman/image.py b/tools/binman/image.py
index 97443d3c0a7b04d48f0e66bbfd6f657ed6cf32be..c1be5cc23a2c6edc8a23a0eb3596290d4985c5ae 100644 (file)
--- a/tools/binman/image.py
+++ b/tools/binman/image.py
@@ -425,3 +425,7 @@ class Image(section.Entry_section):
         super().AddBintools(bintools)
         self.bintools = bintools
         return bintools
+
+    def FdtContents(self, fdt_etype):
+        """This base-class implementation simply calls the state function"""
+        return state.GetFdtContents(fdt_etype)