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ZII i.MX7D Based Boards
=======================
Building Barebox
----------------
To build Barebox for ZII i.MX7 based boards do the following:
.. code-block:: sh
make ARCH=arm CROSS_COMPILE=<ARM toolchain prefix> mrproper
make ARCH=arm CROSS_COMPILE=<ARM toolchain prefix> imx_v7_defconfig
make ARCH=arm CROSS_COMPILE=<ARM toolchain prefix>
Uploading Barebox via JTAG
--------------------------
Barebox can be bootstrapped via JTAG using OpenOCD (latest master) as
follows:
.. code-block:: sh
cd barebox
Documentation/boards/imx/zii-imx7d-rpu2/bootstrap.sh
A custom OpenOCD binary and options can be specified as follows:
.. code-block:: sh
OPENOCD="../openocd/src/openocd -s ../openocd/tcl " \
Documentation/boards/imx/zii-imx7d-rpu2/bootstrap.sh
Disabling DSA in Embedeed Switch
--------------------------------
Booting the Linux kernel that the device ships with will re-configure the on-board
switch into DSA mode, which would make the Ethernet connection unusable in
Barebox. To undo that and re-configure the switch into dumb/pass-through
mode, do the following:
.. code-block:: sh
memset -b -d /dev/switch-eeprom 0x00 0xff 4
Once that is done, power cycling the device should force the switch to
re-read the EEPROM and reconfigure itself.
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