env: Provide a work-around for unquoting fdtfile
Some boards use a CONFIG option to specify the value of this variable.
This is normally handled by efi_get_distro_fdt_name() but in the case
of sunxi this does not work, since 'soc' is sunxi, but the files are
in the allwinner directory.
Provide a work-around for this particular case.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/doc/usage/environment.rst b/doc/usage/environment.rst
index 30fc167..7e2f286 100644
--- a/doc/usage/environment.rst
+++ b/doc/usage/environment.rst
@@ -87,6 +87,18 @@
#include <env/ti/mmc.env>
+Quotes are not suppressed, for example::
+
+ fdtfile=CONFIG_DEFAULT_DEVICE_TREE.dtb
+ # produces: fdtfile="sun7i-a20-pcduino3.dtb"
+
+For this particular issue you can use ``DEFAULT_DEVICE_TREE`` instead::
+
+ fdtfile=DEFAULT_DEVICE_TREE.dtb
+ # produces: fdtfile=sun7i-a20-pcduino3.dtb
+
+There is no general way to remove quotes.
+
If CONFIG_ENV_SOURCE_FILE is empty and the default filename is not present, then
the old-style C environment is used instead. See below.