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-rw-r--r--doc/README.pxe9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/README.pxe b/doc/README.pxe
index 42f913c61f..b67151ca51 100644
--- a/doc/README.pxe
+++ b/doc/README.pxe
@@ -89,6 +89,9 @@ pxe boot
fdt_addr - the location of a fdt blob. 'fdt_addr' will be passed to bootm
command if it is set and 'fdt_addr_r' is not passed to bootm command.
+ fdtoverlay_addr_r - location in RAM at which 'pxe boot' will temporarily store
+ fdt overlay(s) before applying them to the fdt blob stored at 'fdt_addr_r'.
+
pxe file format
===============
The pxe file format is nearly a subset of the PXELINUX file format; see
@@ -148,6 +151,12 @@ kernel <path> - if this label is chosen, use tftp to retrieve the kernel
It useful for overlay selection in pxe file
(see: doc/uImage.FIT/overlay-fdt-boot.txt)
+fdtoverlays <path> [...] - if this label is chosen, use tftp to retrieve the DT
+ overlay(s) at <path>. it will be temporarily stored at the
+ address indicated in the fdtoverlay_addr_r environment variable,
+ and then applied in the load order to the fdt blob stored at the
+ address indicated in the fdt_addr_r environment variable.
+
append <string> - use <string> as the kernel command line when booting this
label.