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 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 #