After the bitbake tdx-reference-minimal-image there are a lot of file referenced to u-boot, but which i need to flash the u-boot image into the internal emmc flash.
Thank you
flavio
Hi, I’m the Toradex AI Assistant.
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I’d be glad to help! Could you let me know which hardware you’re using and which OS version you’re running? You can use the tdx-info command to get this information - see more details at tdx-info.
The specific U-Boot file you need and the flashing method depend on your hardware platform (SoM and carrier board combination) and the OS version you’re working with.
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tdx-info
Software summary
Bootloader: U-Boot
Kernel version: 6.12.49-7.4.0-devel #1 SMP PREEMPT Thu Sep 25 09:13:51 UTC 2025
Kernel command line: irqaffinity=0,1,2 isolcpus=3 nohz_full=3 rcu_nocbs=3 root=PARTUUID=076c4a2a-02 ro rootwait
Distro name: NAME=“TDX Wayland with XWayland Upstream”
Distro version: VERSION_ID=7.4.0-devel-20251214170327-build.0
Distro variant: -
Hostname: colibri-imx8x-07268858
Hardware info
HW model: Toradex Colibri iMX8QXP on Colibri Evaluation Board V3
Toradex version: 0050 V1.0D
Serial number: 07268858
Processor arch: aarch64
Thank you for providing the tdx-info output! Based on your system information, you’re working with a Colibri iMX8QXP running BSP 7.4.0-devel.
U-Boot File for Colibri iMX8X
For your Colibri iMX8QXP, after building with bitbake tdx-reference-minimal-image, you need to look for the boot container file, not just a simple U-Boot binary(1).
The NXP i.MX 8X architecture uses a special boot container that includes multiple components(1):
- DDR memory timings
- SCU firmware
- ARM-trusted firmware (ATF)
- U-Boot
- Any potential Cortex-M4 auxiliary firmware
Locating the Correct File
After your Yocto build completes, look in your build directory for files with names like:
imx-boot-*- Boot container files specific to Colibri iMX8X
The boot container is read by the boot ROM from the boot device, starting at a specific offset (33kB for V1.0A modules booting from SD cards)(1).
Flashing to eMMC
Since you want to flash to the internal eMMC, you’ll typically use the Toradex Easy Installer method or recovery mode flashing procedures. The specific boot container file needs to be written to the correct offset on the eMMC.
For detailed instructions on the complete build process including boot container assembly for i.MX 8X modules, refer to the Build U-Boot for NXP i.MX 8/8X-based SoMs documentation(1).
Best regards,
Toradex AI Assistant.
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In the folder deploy/images/colibri-imx8x
lrwxrwxrwx 2 flavio flavio 35 Jan 16 15:13 imx-boot → imx-boot-colibri-imx8x-sd.bin-flash
-rw-r–r-- 2 flavio flavio 1192960 Jan 16 15:13 imx-boot-colibri-imx8x-sd.bin-flash
-rw-r–r-- 2 flavio flavio 1193000 Jan 16 15:13 imx-boot.tagged
which i need to use to flash into the internal emmc ?