diff --git a/images/boot.txt b/images/boot.txt
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--- /dev/null
+++ b/images/boot.txt
@@ -0,0 +1,21 @@
+# After modifying, run ./mkscr
+
+# MAC address (use spaces instead of colons)
+setenv macaddr da 19 c8 7a 6d f4
+
+#part uuid ${devtype} ${devnum}:${bootpart} uuid
+setenv bootargs console=ttyS2,1500000 root=LABEL=ROOTFS rootfstype=btrfs rootflags=subvol=@ rw rootwait earlycon=uart8250,mmio32,0xff130000 audit=0
+setenv fdtfile rockchip/rk3328-rock64.dtb
+
+if load ${devtype} ${devnum}:${bootpart} ${kernel_addr_r} /boot/Image; then
+  if load ${devtype} ${devnum}:${bootpart} ${fdt_addr_r} /boot/dtbs/${fdtfile}; then
+    fdt addr ${fdt_addr_r}
+    fdt resize
+    fdt set /ethernet@ff540000 local-mac-address "[${macaddr}]"
+    if load ${devtype} ${devnum}:${bootpart} ${ramdisk_addr_r} /boot/initramfs-linux.img; then
+      booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdt_addr_r};
+    else
+      booti ${kernel_addr_r} - ${fdt_addr_r};
+    fi;
+  fi;
+fi
diff --git a/images/mkscr b/images/mkscr
new file mode 100755
index 0000000..272b6a7
--- /dev/null
+++ b/images/mkscr
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+#!/bin/bash
+
+if [[ ! -x /usr/bin/mkimage ]]; then
+  echo "mkimage not found. Please install uboot-tools:"
+  echo "  pacman -S uboot-tools"
+  exit 1
+fi
+
+mkimage -A arm -O linux -T script -C none -n "U-Boot boot script" -d boot.txt boot.scr
diff --git a/images/rksd_loader.img b/images/rksd_loader.img
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diff --git a/images/u-boot.itb b/images/u-boot.itb
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diff --git a/packages/uboot-rock64-2020.01-2-aarch64.pkg.tar.xz b/packages/uboot-rock64-2020.01-2-aarch64.pkg.tar.xz
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