I.MX 8QM How to set up recovery boot

[cmzb1999]

I would like to create customized recovery image. While I do not know how to config it. Simple thinking, there shall have efuse to define recovery device, probably address? I did not found efuse index about recovery.

And in I.MX8 QM Reference Manual, there has a secondary container set. Where to define the address of secondary container set in the boot device?

Thank you very much!

[cmzb1999]

Hi Aido,

Thank you for prompt response. I have another question. For the primary image set, there have 2 image set(1,2), SCFW select the newer version of image set. For the secondary image set, SCFW select the older version of image set. I wonder how to build 2 image sets into the primary image set.

[AldoG]

Hello,

I do not quite understand your question, is it that you want to have the same SW version in 2 different containers?

Also, please note that you cannot have the 2 images in the same set, since the purpose is to have a recovery in a different set so in case primary boot gets corrupted, secondary boot will be available.

Best regards/Saludos,
Aldo.

[cmzb1999]

Hi,

From I.MX8QMRM, Figure 5-2, High Level Boot Flow (1 of 3) - SCU ROM Boot Start, it is easy to get there totally have 4 image sets. 2 for primary image and 2 for secondary image. 

If what you mean is only one image sets existing in primary image, the figure 5-2 need fixed.

Thank you very much!

[AldoG]

Hello,

Please accept my apologize for the confusion, but please note that for each container, as specified in the same figure you used as refeence in the reference manual, there is 2 sets, so you may have 2 set only for each container.

So both your toughts and the reference manual are correct.

Best regards/Saludos,
Aldo.

[AldoG]

Hello,

You may refer to the following:
https://community.nxp.com/t5/Blog/i-MX8QXP-eMMC-Secondary-Boot/ba-p/1257704

There are small differences for i.MX8QM, like the fuse address, for this you may refer to the Reference manual Fusemap chapter.

Best regards/Saludos,
Aldo.