Add at least some information how Barebox can be used on the ZynqMP and what is required to create a bootable image. Signed-off-by: Michael Tretter <m.tretter@xxxxxxxxxxxxxx> --- Documentation/boards/zynqmp.rst | 40 +++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 Documentation/boards/zynqmp.rst diff --git a/Documentation/boards/zynqmp.rst b/Documentation/boards/zynqmp.rst new file mode 100644 index 000000000000..05d41c401dc2 --- /dev/null +++ b/Documentation/boards/zynqmp.rst @@ -0,0 +1,40 @@ +Xilinx ZynqMP Ultrascale+ +========================= + +Barebox has support as a second stage boot loader for the Xilinx ZynqMP +Ultrascale+. + +Image creation +-------------- + +Currently, Barebox only supports booting as a second stage boot loader from an +SD-card. It relies on the FSBL_ to initialize the base system including sdram +setup and pin muxing. + +The ZynqMP defconfig supports the ZCU104 reference board. Use it to build the +Barebox image:: + + make ARCH=arm64 zynqmp_defconfig + make ARCH=arm64 + +.. note:: The resulting image ``images/barebox-zynqmp-zcu104.img`` is **not** an image + that can directly be booted on the ZynqMP. + +For a bootable BOOT.BIN image, you also need to build the FSBL_ and a ZynqMP +TF-A. Prepare these separately using the respective instructions. + +Use bootgen_ or ``mkimage -T zynqmpbif`` from the U-boot tools to build the +final BOOT.BIN image that can be loaded by the ROM code. Check the +instructions for these tools how to prepare the BOOT.BIN image. + +Create a FAT partition as the first partition of the SD card and copy the +produced BOOT.BIN into this partition. + +.. _FSBL: `https://github.com/Xilinx/embeddedsw/` +.. _bootgen: `https://github.com/Xilinx/bootgen` + +Booting Barebox +--------------- + +The FSBL loads the TF-A and Barebox, jumps to the TF-A, which will then return +to Barebox. Afterwards, you can use Barebox as usual. -- 2.29.2 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
