binman: Support positioning an entry by and ELF symbol
In some cases it is useful to position an entry over the top of a symbol
in an ELF file. For example, if the symbol holds a version string then it
allows the string to be accessed from the fdtmap.
Add support for this.
Suggested-by: Pali Rohár <pali@kernel.org>
Suggested-by: Keith Short <keithshort@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/test/274_offset_from_elf.dts b/tools/binman/test/274_offset_from_elf.dts
new file mode 100644
index 0000000..e3372fc
--- /dev/null
+++ b/tools/binman/test/274_offset_from_elf.dts
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ binman {
+ blob: blob {
+ filename = "blob_syms.bin";
+ elf-filename = "blob_syms";
+ elf-base-sym = "__my_start_sym";
+ };
+
+ inset {
+ type = "null";
+ offset-from-elf = <&blob>, "val3", <0>;
+ size = <4>;
+ overlap;
+ };
+
+ inset2 {
+ type = "null";
+ offset-from-elf = <&blob>, "val3", <4>;
+ size = <4>;
+ overlap;
+ };
+ };
+};