Signed-off-by: Stefan Brüns <[email protected]>
---
 doc/README.pxe | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/README.pxe b/doc/README.pxe
index f67605c..d017f60 100644
--- a/doc/README.pxe
+++ b/doc/README.pxe
@@ -155,6 +155,13 @@ fdt <path>     - if this label is chosen, use tftp to 
retrieve the fdt blob
                      the fdt_addr_r environment variable, and that address will
                      be passed to bootm.
 
+fdtdir <path>      - if this label is chosen, use tftp to retrieve a fdt blob
+                     relative to <path>. If the fdtfile environment variable
+                     is set, <path>/<fdtfile> is retrieved. Otherwise, the
+                     filename is generated from the soc and board environment
+                     variables, i.e. <path>/<soc>-<board>.dtb is retrieved.
+                     If the fdt command is specified, fdtdir is ignored.
+
 localboot <flag>    - Run the command defined by "localcmd" in the environment.
                      <flag> is ignored and is only here to match the syntax of
                      PXELINUX config files.
-- 
2.1.4

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