Setup u-boot on custom imx6ull based board

[pankajjoshi]

I have a custom board based on i.MX6ULL (MCIMX6Y2CVM05AA 14X14) with 4 GB DDR3 RAM & 4 GB eMMC. I am trying to setup u-boot for the board. Shall i be changing the "./board/freescale/mx6ull_ddr3_arm2/imximage.cfg" file with the DDR calibration coefficients? Or shall i be changing "./board/freescale/mx6ullevk/imximage.cfg" in u-boot? Can anyone guide me with the detailed changes i need to make to bring up u-boot on this custom board? I am using mfgtool2 to flash using "mfgtool2-yocto-mx-14x14-arm2-emmc-ull.vbs". Am i using mfgtool2 correctly? Much needed help! 

[igorpadykov]

Hi Pankaj

DDR calibration coefficients should be put in folder for corresponding

board, which was used as reference for custom board. If it is i.MX6ULL EVK

then ..mx6ullevk/imximage.cfg. For changes one can look in Porting Guide document

included in linux documentation package on

https://www.nxp.com/support/developer-resources/run-time-software/i.mx-developer-resources/i.mx-6ser...

Also for using mfg tool it is necessary to use vbs script file corresponding to used reference board.

Best regards
igor
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[15508618566]

i'm also puzzled by this...

[vincent_pelissi]

Hi,

Could you try this command "bitbake -C compile u-boot-imx" ?

Hope this help you.

[vincent_pelissi]

Hi igorpadykov,

I have modified the file imximage.cfg in the folder ~/imx-yocto-bsp/build-fb-imx6ull/tmp/work/imx6ull14x14evk-poky-linux-gnueabi/u-boot-imx/2018.03-r0/git/board/freescale/mx6ullevk with parameters given from the DDR3 calibration tool but when I run bitbake core-image-base, the core-image-base-imx6ull14x14evk.sdcard.bz2 and u-boot-imx6ull14x14evk.imx files are not recompiled. 

In the iMX BSP Porting Guide Linux (chapters 3.2.1 and 3.2.2), it is just said "If the DDR configuration (board/freescale/<customer_board_name>/imximage.cfg) is modified successfully, you can compile and write u-boot.imx to an SD card."

What is needed to make a new u-boot.imx file with updated DCD values?

Thank you for any help.

Vincent