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.. SPDX-License-Identifier: GPL-2.0+
Verdin iMX8M Mini Module
========================
Quick Start
-----------
- Build the ARM trusted firmware binary
- Get the DDR firmware
- Build U-Boot
- Flash to eMMC
- Boot
Get and Build the ARM Trusted Firmware (Trusted Firmware A)
-----------------------------------------------------------
.. code-block:: bash
$ echo "Downloading and building TF-A..."
$ git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
$ cd trusted-firmware-a
Then build ATF (TF-A):
.. code-block:: bash
$ make PLAT=imx8mm IMX_BOOT_UART_BASE=0x30860000 bl31
$ cp build/imx8mm/release/bl31.bin ../
Get the DDR Firmware
--------------------
.. code-block:: bash
$ cd ..
$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.10.1.bin
$ chmod +x firmware-imx-8.10.1.bin
$ ./firmware-imx-8.10.1.bin
$ cp firmware-imx-8.10.1/firmware/ddr/synopsys/lpddr4*.bin ./
Build U-Boot
------------
.. code-block:: bash
$ export CROSS_COMPILE=aarch64-linux-gnu-
$ make verdin-imx8mm_defconfig
$ make
Flash to eMMC
-------------
.. code-block:: bash
> tftpboot ${loadaddr} flash.bin
> setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt ${blkcnt} / 0x200
> mmc dev 0 1 && mmc write ${loadaddr} 0x2 ${blkcnt}
As a convenience, instead of the last two commands one may also use the update
U-Boot wrapper:
.. code-block:: bash
> run update_uboot
Boot
----
ATF, U-Boot proper and u-boot.dtb images are packed into FIT image,
which is loaded and parsed by SPL.
Boot sequence is:
* SPL ---> ATF (TF-A) ---> U-Boot proper
Output:
.. code-block:: bash
U-Boot SPL 2021.10-rc2-00028-gee010ba1129 (Aug 23 2021 - 16:56:02 +0200)
Normal Boot
WDT: Started with servicing (60s timeout)
Trying to boot from MMC1
NOTICE: BL31: v2.2(release):rel_imx_5.4.70_2.3.2_rc1-5-g835a8f67b
NOTICE: BL31: Built : 18:02:12, Aug 16 2021
U-Boot 2021.10-rc2-00028-gee010ba1129 (Aug 23 2021 - 16:56:02 +0200)
CPU: Freescale i.MX8MMQ rev1.0 at 1200 MHz
Reset cause: POR
DRAM: 2 GiB
WDT: Started with servicing (60s timeout)
MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... OK
In: serial
Out: serial
Err: serial
Model: Toradex Verdin iMX8M Mini Quad 2GB Wi-Fi / BT IT V1.1A, Serial# 06760554
Carrier: Toradex Verdin Development Board V1.1A, Serial# 10754333
Setting variant to wifi
Net: eth0: ethernet@30be0000
Hit any key to stop autoboot: 0
Verdin iMX8MM #
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