u-boot/doc/board/nxp/imx8mm_evk.rst
Mamta Shukla 4ae1fa338b doc: board: nxp: Add instructions to boot from QSPI
Add instructions to build and boot from  QSPI Flash

Signed-off-by: Mamta Shukla <mamta.shukla@leica-geosystems.com>
Signed-off-by: Thomas Haemmerle <thomas.haemmerle@leica-geosystems.com>
Tested-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
2022-07-25 16:11:49 +02:00

89 lines
1.9 KiB
ReStructuredText

.. SPDX-License-Identifier: GPL-2.0+
imx8mm_evk
==========
U-Boot for the NXP i.MX8MM EVK board
Quick Start
-----------
- Build the ARM Trusted firmware binary
- Get ddr firmware
- Build U-Boot
- Boot
Get and Build the ARM Trusted firmware
--------------------------------------
Note: builddir is U-Boot build directory (source directory for in-tree builds)
Get ATF from: https://source.codeaurora.org/external/imx/imx-atf
branch: imx_5.4.47_2.2.0
.. code-block:: bash
$ make PLAT=imx8mm bl31
$ cp build/imx8mm/release/bl31.bin $(builddir)
Get the ddr firmware
--------------------
.. code-block:: bash
$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.9.bin
$ chmod +x firmware-imx-8.9.bin
$ ./firmware-imx-8.9
$ cp firmware-imx-8.9/firmware/ddr/synopsys/lpddr4*.bin $(builddir)
Build U-Boot for sd card
--------------------------
.. code-block:: bash
$ export CROSS_COMPILE=aarch64-poky-linux-
$ make imx8mm_evk_defconfig
$ make
Burn the flash.bin to MicroSD card offset 33KB:
.. code-block:: bash
$sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33 conv=notrunc
Boot
----
Set Boot switch to SD boot
Build U-Boot for qspi flash card
------------------------------------
.. code-block:: bash
$ export CROSS_COMPILE=aarch64-poky-linux-
$ make imx8mm_evk_fspi_defconfig
$ make
Currently, there is no direct support to write to QSPI Flash.
Copy flash.bin to ${loadaddr} either from sd card or over network and then copy to
qspi flash
From sd card to memory
.. code-block:: bash
$mmc dev 1
$mmc read ${loadaddr} 0x00 <size_of_flash.bin/512>
.. code-block:: bash
$ sf probe
$ sf erase 0 <size_of_flash.bin_in_hex>
$ sf write $loadaddr 0x00 <size_of_flash.bin_in_hex>
Boot from QSPI Flash
-----------------------
Set Boot Switch to QSPI Flash
Pin configuration for imx8mm_revC evk to boot from qspi flash
SW1101: 0110xxxxxx
SW1102: 00100x0010