1.. SPDX-License-Identifier: GPL-2.0+
2
3Verdin iMX8M Mini Module
4========================
5
6Quick Start
7-----------
8
9- Build the ARM trusted firmware binary
10- Get the DDR firmware
11- Build U-Boot
12- Flash to eMMC
13- Boot
14
15Get and Build the ARM Trusted Firmware (Trusted Firmware A)
16-----------------------------------------------------------
17
18.. code-block:: bash
19
20    $ echo "Downloading and building TF-A..."
21    $ git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
22    $ cd trusted-firmware-a
23
24Then build ATF (TF-A):
25
26.. code-block:: bash
27
28    $ make PLAT=imx8mm IMX_BOOT_UART_BASE=0x30860000 bl31
29    $ cp build/imx8mm/release/bl31.bin ../
30
31Get the DDR Firmware
32--------------------
33
34.. code-block:: bash
35
36    $ cd ..
37    $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.10.1.bin
38    $ chmod +x firmware-imx-8.10.1.bin
39    $ ./firmware-imx-8.10.1.bin
40    $ cp firmware-imx-8.10.1/firmware/ddr/synopsys/lpddr4*.bin ./
41
42Build U-Boot
43------------
44.. code-block:: bash
45
46    $ export CROSS_COMPILE=aarch64-linux-gnu-
47    $ export ATF_LOAD_ADDR=0x920000
48    $ make verdin-imx8mm_defconfig
49    $ make
50
51Flash to eMMC
52-------------
53
54.. code-block:: bash
55
56    > tftpboot ${loadaddr} flash.bin
57    > setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt ${blkcnt} / 0x200
58    > mmc dev 0 1 && mmc write ${loadaddr} 0x2 ${blkcnt}
59
60As a convenience, instead of the last two commands one may also use the update
61U-Boot wrapper:
62
63.. code-block:: bash
64
65    > run update_uboot
66
67Boot
68----
69
70ATF, U-Boot proper and u-boot.dtb images are packed into FIT image,
71which is loaded and parsed by SPL.
72
73Boot sequence is:
74
75* SPL ---> ATF (TF-A) ---> U-Boot proper
76
77Output:
78
79.. code-block:: bash
80
81U-Boot SPL 2021.10-rc2-00028-gee010ba1129 (Aug 23 2021 - 16:56:02 +0200)
82Normal Boot
83WDT:   Started with servicing (60s timeout)
84Trying to boot from MMC1
85NOTICE:  BL31: v2.2(release):rel_imx_5.4.70_2.3.2_rc1-5-g835a8f67b
86NOTICE:  BL31: Built : 18:02:12, Aug 16 2021
87
88
89U-Boot 2021.10-rc2-00028-gee010ba1129 (Aug 23 2021 - 16:56:02 +0200)
90
91CPU:   Freescale i.MX8MMQ rev1.0 at 1200 MHz
92Reset cause: POR
93DRAM:  2 GiB
94WDT:   Started with servicing (60s timeout)
95MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
96Loading Environment from MMC... OK
97In:    serial
98Out:   serial
99Err:   serial
100Model: Toradex Verdin iMX8M Mini Quad 2GB Wi-Fi / BT IT V1.1A, Serial# 06760554
101Carrier: Toradex Verdin Development Board V1.1A, Serial# 10754333
102Setting variant to wifi
103Net:   eth0: ethernet@30be0000
104Hit any key to stop autoboot:  0
105Verdin iMX8MM #
106