@@ -45,13 +45,47 @@ Build U-Boot
$ export ATF_LOAD_ADDR=0x920000
$ make
-Burn the flash.bin to MicroSD card offset 33KB:
+Booting from the SD card
+------------------------
+
+Burn the flash.bin to MicroSD card offset 33KB and u-boot.itb to
+offset 384kB.
.. code-block:: bash
$sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33 conv=notrunc
$sudo dd if=u-boot.itb of=/dev/sdc bs=1024 seek=384 conv=sync
-Boot
-----
-Set Boot switch to SD boot
+Booting from the eMMC
+---------------------
+
+Power off the board and put the boot mode switches
+to Download Mode.
+
+Connect a USB cable between the TypeC port 1 and the host PC.
+
+Load flash.bin via the 'uuu' tool:
+
+.. code-block:: bash
+
+ $ sudo uuu flash.bin
+
+Load u-boot.itb via the 'uuu' tool:
+
+.. code-block:: bash
+
+ $ sudo uuu SDPV: write -f u-boot.itb -addr 0x42000000
+ $ sudo uuu SDPV: jump -addr 0x42000000
+
+Then U-Boot will be launched.
+
+Run the ums tool to flash the eMMC:
+
+.. code-block:: bash
+
+ => ums 0 mmc 2
+ => sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33; sync
+ => sudo dd if=u-boot.itb of=/dev/sd[x] bs=1024 seek=384; sync
+
+Power off the board. Put the boot switches to eMMC boot mode
+and power it on.
Improve the readme by adding instructions on how to load U-Boot via USB and flash the eMMC. Signed-off-by: Fabio Estevam <festevam@denx.de> --- doc/board/freescale/imx8mm_evk.rst | 42 +++++++++++++++++++++++++++--- 1 file changed, 38 insertions(+), 4 deletions(-)