.cfg file generation for customized board

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.cfg file generation for customized board

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srinivasaporam
Contributor II

Hi,

We have got a customized board which is designed based on the reference board (Wandboard-dual).

When we are deploying the sd card images to this board, then board is not booting, where as when we are deploying the same sd card images to sd card and powering the reference board by putting sd card into the slot, then this board is booting. We are using 3.10.53 BSP for the same.

Then  we came to know that uboot also has to be customized since we have the following differences between our customized board and reference board:

1. Reference board uses DDR3 where as customized board has LPDDR2. So, customizing uboot for the same, in the material we are referring to is stating that we need to make .cfg file which consists of dcd (Device Configuration Data). How to generate this .cfg file for our customized board.

2. Reference board uses SD3 (SD card) for booting, where as our board has only one SD card slot (SD1). What changes we need to make our board to boot from SD1 instead of SD3.

What other files are to be edited inorder to get our board boot.

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igorpadykov
NXP Employee
NXP Employee

Hi Srinivasa

1. shortly, cfg file is created manually using some exisiting working example

of reference board, using data from DDR tester

i.MX6 DDR Stress Test Tool V1.0.3

2. software changes are not needed to boot from different SD slots, the same

SD card should work OK on all SD slots.

Best regards

igor

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srinivasaporam
Contributor II

Hi,

Thanks for your reply. But in reference board also, if we keep sd card into SD1 slot (wandboard has got two SD slots-SD3 (for OS) and SD1 for Applications), it is also not booting.

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igorpadykov
NXP Employee
NXP Employee

this may point that hardware was not properly designed.

So for different SD slots (note this may depend also on used SD card),

one will have to tweak, for example, drive strength.

In any case, using very slow card, seems one can boot from any SD slot.

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