Verdin iMX8M Plus 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)

$ 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):

$ export CROSS_COMPILE=aarch64-linux-gnu-
$ make PLAT=imx8mp IMX_BOOT_UART_BASE=0x30880000 bl31
$ cp build/imx8mp/release/bl31.bin ../

Get the DDR Firmware

$ 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*_202006.bin ./

Build U-Boot

$ export CROSS_COMPILE=aarch64-linux-gnu-
$ make verdin-imx8mp_defconfig
$ make

Flash to eMMC

> tftpboot ${loadaddr} flash.bin
> setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt ${blkcnt} / 0x200
> mmc dev 2 1 && mmc write ${loadaddr} 0x0 ${blkcnt}

As a convenience, instead of the last two commands, one may also use the update U-Boot wrapper:

> run update_uboot

Boot

ATF, U-Boot proper and u-boot.dtb images are packed into a FIT image, which is loaded and parsed by SPL.

Boot sequence is:

  • SPL —> ATF (TF-A) —> U-Boot proper

Output:

U-Boot SPL 2022.04-rc1-00164-g21a0312611-dirty (Feb 07 2022 - 11:34:04 +0100)
Quad die, dual rank failed, attempting dual die, single rank configuration.
Normal Boot
WDT:   Started watchdog@30280000 with servicing (60s timeout)
Trying to boot from BOOTROM
Find img info 0x&48025a00, size 872
Need continue download 1024
Download 779264, Total size 780424
NOTICE:  BL31: v2.2(release):rel_imx_5.4.70_2.3.2_rc1-5-g835a8f67b
NOTICE:  BL31: Built : 16:52:37, Aug 26 2021


U-Boot 2022.04-rc1-00164-g21a0312611-dirty (Feb 07 2022 - 11:34:04 +0100)

CPU:   Freescale i.MX8MP[8] rev1.1 at 1200 MHz
Reset cause: POR
DRAM:  8 GiB
Core:  78 devices, 18 uclasses, devicetree: separate
WDT:   Started watchdog@30280000 with servicing (60s timeout)
MMC:   FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Model: Toradex Verdin iMX8M Plus Quad 4GB Wi-Fi / BT IT V1.0B, Serial# 06817281
Carrier: Toradex Verdin Development Board V1.1A, Serial# 10807609
Setting variant to wifi
Net:   Hard-coding pdata->enetaddr
eth1: ethernet@30be0000, eth0: ethernet@30bf0000 [PRIME]
Hit any key to stop autoboot:  0
Verdin iMX8MP #