diff --git a/board/raspberrypi/boot.scr.in b/board/raspberrypi/boot.scr.in
new file mode 100644
index 0000000000..1ba733ceaa
--- /dev/null
+++ b/board/raspberrypi/boot.scr.in
@@ -0,0 +1,18 @@
+# Please note that this is only a sample, we recommend you to change
+# it to fit your needs. You should override this file using
+# BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT_SOURCE.
+
+# On most Raspberry Pi boards UART0 is ttyAMA0, Raspberry Pi 5 is
+# different.
+if test "$board_name" = "5 Model B"; then
+    env set serial_uart "ttyAMA10,115200"
+else
+    env set serial_uart "ttyAMA0,115200"
+fi
+env set bootargs "root=/dev/mmcblk0p2 rootwait console=tty1 console=${serial_uart}"
+
+# load kernel from the root partition
+load mmc 0:2 ${kernel_addr_r} boot/Image
+
+# boot using the FDT provided by firmware
+booti ${kernel_addr_r} - ${fdt_addr}
diff --git a/board/raspberrypi/config_cm4io_64bit_uboot.txt b/board/raspberrypi/config_cm4io_64bit_uboot.txt
new file mode 100644
index 0000000000..eef929186c
--- /dev/null
+++ b/board/raspberrypi/config_cm4io_64bit_uboot.txt
@@ -0,0 +1,23 @@
+# Please note that this is only a sample, we recommend you to change it to fit
+# your needs.
+# You should override this file using BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE.
+# See http://buildroot.org/manual.html#rootfs-custom
+# and http://elinux.org/RPiconfig for a description of config.txt syntax
+
+start_file=start4.elf
+fixup_file=fixup4.dat
+
+kernel=u-boot.bin
+
+# Enable UART0 for serial console on ttyAMA0
+dtoverlay=miniuart-bt
+
+# enable RTC
+dtparam=i2c_vc=on
+dtoverlay=i2c-rtc,pcf85063a,i2c_csi_dsi
+
+# enable dwc2 USB controller (USB 2.0)
+dtoverlay=dwc2,dr_mode=host
+
+# enable 64bits support
+arm_64bit=1
diff --git a/board/raspberrypi/readme.txt b/board/raspberrypi/readme.txt
index 31ff424a83..8e1009f254 100644
--- a/board/raspberrypi/readme.txt
+++ b/board/raspberrypi/readme.txt
@@ -83,6 +83,10 @@ or for CM4 (on IO Board - 64 bit):
 
   $ make raspberrypicm4io_64_defconfig
 
+or to boot CM4 (on IO Board - 64 bit) using U-Boot:
+
+  $ make raspberrypicm4io_64_uboot_defconfig
+
 For model 5 B and 500:
 
   $ make raspberrypi5_defconfig
diff --git a/configs/raspberrypicm4io_64_uboot_defconfig b/configs/raspberrypicm4io_64_uboot_defconfig
new file mode 100644
index 0000000000..84ce16b993
--- /dev/null
+++ b/configs/raspberrypicm4io_64_uboot_defconfig
@@ -0,0 +1,40 @@
+BR2_aarch64=y
+BR2_cortex_a72=y
+BR2_ARM_FPU_VFPV4=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_AARCH64_GLIBC_STABLE=y
+BR2_GLOBAL_PATCH_DIR="board/raspberrypi/patches"
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+BR2_SYSTEM_DHCP="eth0"
+BR2_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypicm4io-64/post-build.sh"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/raspberrypicm4io-64/post-image.sh"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,21b410140c47ffab5668399f6f143c7d7b935c8b)/linux-21b410140c47ffab5668399f6f143c7d7b935c8b.tar.gz"
+BR2_LINUX_KERNEL_DEFCONFIG="bcm2711"
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2711-rpi-cm4"
+BR2_LINUX_KERNEL_INSTALL_TARGET=y
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
+BR2_PACKAGE_XZ=y
+BR2_PACKAGE_RPI_FIRMWARE=y
+BR2_PACKAGE_RPI_FIRMWARE_VARIANT_PI4=y
+BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE="board/raspberrypicm4io-64/config_cm4io_64bit_uboot.txt"
+BR2_PACKAGE_KMOD=y
+BR2_PACKAGE_KMOD_TOOLS=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
+# BR2_TARGET_ROOTFS_TAR is not set
+BR2_TARGET_UBOOT=y
+BR2_TARGET_UBOOT_BOARD_DEFCONFIG="rpi_arm64"
+BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
+BR2_PACKAGE_HOST_KMOD_XZ=y
+BR2_PACKAGE_HOST_MTOOLS=y
+BR2_PACKAGE_HOST_RASPBERRYPI_USBBOOT=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT=y
+BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT_SOURCE="board/raspberrypicm4io-64/boot.scr.in"