It is useful to be able to quickly locate the FDT map in the image. An easy way to do this is with a pointer at the start or end of the image.
Add an 'image header' entry, which places a magic number followed by a pointer to the FDT map. This can be located at the start or end of the image, or at a chosen location.
As part of this, update GetSiblingImagePos() to detect missing siblings.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: - Update test to use _DoReadFileRealDtb() helper
tools/binman/README | 5 +- tools/binman/README.entries | 19 +++++ tools/binman/entry.py | 11 +++ tools/binman/etype/image_header.py | 76 ++++++++++++++++++++ tools/binman/ftest.py | 47 +++++++++++- tools/binman/test/116_fdtmap_hdr.dts | 17 +++++ tools/binman/test/117_fdtmap_hdr_start.dts | 19 +++++ tools/binman/test/118_fdtmap_hdr_pos.dts | 19 +++++ tools/binman/test/119_fdtmap_hdr_missing.dts | 16 +++++ tools/binman/test/120_hdr_no_location.dts | 16 +++++ 10 files changed, 242 insertions(+), 3 deletions(-) create mode 100644 tools/binman/etype/image_header.py create mode 100644 tools/binman/test/116_fdtmap_hdr.dts create mode 100644 tools/binman/test/117_fdtmap_hdr_start.dts create mode 100644 tools/binman/test/118_fdtmap_hdr_pos.dts create mode 100644 tools/binman/test/119_fdtmap_hdr_missing.dts create mode 100644 tools/binman/test/120_hdr_no_location.dts
Applied to u-boot-dm, thanks!