binman: Add support for flashrom FMAP
Add an entry which can hold an FMAP region as used by flashrom, an
open-source flashing tool used on Linux x86 machines. This provides a
simplified non-hierarchical view of the entries in the image and has a
signature at the start to allow flashrom to find it in the image.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/README.entries b/tools/binman/README.entries
index 60cb248..0b3be69 100644
--- a/tools/binman/README.entries
+++ b/tools/binman/README.entries
@@ -26,6 +26,26 @@
+Entry: fmap: An entry which contains an Fmap section
+----------------------------------------------------
+
+Properties / Entry arguments:
+ None
+
+FMAP is a simple format used by flashrom, an open-source utility for
+reading and writing the SPI flash, typically on x86 CPUs. The format
+provides flashrom with a list of areas, so it knows what it in the flash.
+It can then read or write just a single area, instead of the whole flash.
+
+The format is defined by the flashrom project, in the file lib/fmap.h -
+see www.flashrom.org/Flashrom for more information.
+
+When used, this entry will be populated with an FMAP which reflects the
+entries in the current image. Note that any hierarchy is squashed, since
+FMAP does not support this.
+
+
+
Entry: intel-cmc: Entry containing an Intel Chipset Micro Code (CMC) file
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