binman: add a new entry type for packing DDR PHY firmware images

i.MX95 needs to combine DDR PHY firmware images and their byte counts
together, so add a new entry type nxp-header-ddrfw for this requirement.

Signed-off-by: Alice Guo <[email protected]>

1 files changed, 29 insertions, 0 deletions

diff --git a/tools/binman/etype/nxp_header_ddrfw.py b/tools/binman/etype/nxp_header_ddrfw.py
new file mode 100644
index 00000000000..655699e6ffa
--- /dev/null
+++ b/tools/binman/etype/nxp_header_ddrfw.py
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2025 NXP
+
+from binman.etype.section import Entry_section
+
+class Entry_nxp_header_ddrfw(Entry_section):
+    """Add a header to DDR PHY firmware images
+
+    This entry is used for i.MX95 to combine DDR PHY firmware images and their
+    byte counts together.
+
+    See imx95_evk.rst for how to get DDR PHY Firmware Images.
+    """
+
+    def __init__(self, section, etype, node):
+        super().__init__(section, etype, node)
+
+    def BuildSectionData(self, required):
+        section_data = bytearray()
+        header_data = bytearray()
+
+        for entry in self._entries.values():
+            entry_data = entry.GetData(required)
+
+            section_data += entry_data
+            header_data += entry.contents_size.to_bytes(4, 'little')
+
+        return header_data + section_data