u-boot: fix usb boot on rpi4

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>

diff --git a/config/u-boot/boot.cmd b/config/u-boot/boot.cmd
index 5faa3a1eca4b07f43484cf3d7ee2660ff65fa735..61c50d064215625839f22435c28b483472e83008 100644 (file)
--- a/config/u-boot/boot.cmd
+++ b/config/u-boot/boot.cmd
@@ -7,6 +7,10 @@ if test "${board}" = "ten64"; then
        bootefi ${kernel_addr_r} ${fdt_addr_r}
 fi;
 
+if test ${boot_dev} = ""; then
+       setenv boot_dev ${devtype}
+fi;
+
 if test ${boot_dev} = ""; then
        setenv boot_dev mmc;
        setenv root_dev /dev/mmcblk0p3;