Toradex SMARC 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..."
$gitclonehttps://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
$cdtrusted-firmware-a

Then build ATF (TF-A):

$exportCROSS_COMPILE=aarch64-linux-gnu-
$makePLAT=imx8mpIMX_BOOT_UART_BASE=0x30a60000bl31
$cpbuild/imx8mp/release/bl31.bin../

Get the DDR Firmware

$cd..
$wgethttps://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.10.1.bin
$chmod+xfirmware-imx-8.10.1.bin
$./firmware-imx-8.10.1.bin
$cpfirmware-imx-8.10.1/firmware/ddr/synopsys/lpddr4*_202006.bin./

Build U-Boot

$exportCROSS_COMPILE=aarch64-linux-gnu-
$maketoradex-smarc-imx8mp_defconfig
$make

Flash to eMMC

>tftpboot${loadaddr}flash.bin
>setexprblkcnt${filesize}+0x1ff&&setexprblkcnt${blkcnt}/0x200
>mmcdev01&&mmcwrite${loadaddr}0x0${blkcnt}

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

>runupdate_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 2025.04-rc5-00023-g34c31be81211 (Apr 04 2025 - 15:36:23 +0100)
Training FAILED
DDR configured as single rank
SEC0: RNG instantiated
Normal Boot
Trying to boot from BOOTROM
Boot Stage: Primary boot
Find img info 0x4802f200, size 1100
Need continue download 1024
NOTICE: Do not release JR0 to NS as it can be used by HAB
NOTICE: BL31: v2.11.0(release):v2.11.0-723-gbd298f5c30ac
NOTICE: BL31: Built : 14:18:43, Apr 4 2025
U-Boot 2025.04-rc5-00023-g34c31be81211 (Apr 04 2025 - 15:36:23 +0100)
CPU: Freescale i.MX8MP[8] rev1.1 1600 MHz (running at 1200 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 72C
Reset cause: POR
DRAM: 4 GiB
Core: 312 devices, 32 uclasses, devicetree: separate
WDT: Started watchdog@30280000 with servicing every 1000ms (60s timeout)
MMC: FSL_SDHC: 1, FSL_SDHC: 0
Loading Environment from MMC... Reading from MMC(0)... OK
In: serial@30a60000
Out: serial@30a60000
Err: serial@30a60000
Model: Toradex 0097 SMARC iMX8M Plus Quad 4GB WB IT V1.0A
Serial#: 15603364
SEC0: RNG instantiated
Net: Get shared mii bus on ethernet@30be0000
eth1: ethernet@30be0000, eth0: ethernet@30bf0000 [PRIME]
Hit any key to stop autoboot: 0
SMARC iMX8MP #