iMX.6ull custom board bring up

[pankajjoshi]

I have a custom board based on iMX.6ULL. I am trying to flash uboot via mfgtool2 in eMMC. Somehow it gets struck while loading the uboot image. I am taking the uboot image present in the mfgtool2 archive "u-boot-imx6ull14x14ddr3arm2_emmc.imx". Can anyone please help in letting me know what all need to be done to bring up this custom board.

Thanks

[igorpadykov]

Hi Pankaj

for new board it is necessary to rebuld mfg tools firmware (file in /firmware folder)

using new ddr calibration coefficients (put them in uboot/../mx6ullevk/imximage.cfg) found

from ddr test

i.MX6/7 DDR Stress Test Tool V2.80 

For building please use sect.6.2 Manufacturing Tool, MFGTool attached Yocto Guide.

Best regards
igor
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[pankajjoshi]

Thanks Igor for information. What i understand, I need to build the mfg tools firmware "fsl-image-mfgtool-initramfs-imx_mfgtools.cpio.gz.u-boot" by building uboot again as per ddr calibration coefficients. I think i do not need to change the address like "address =0x80800000" in the ucl2.xml file.

One more point, can i do uboot flashing without mfgtool. I have connected my hardware to a linux machine. Can i also use the "dd" command over linux to flash. But problem is, i am not seeing eMMC as a device in /dev or /sys/block. Can you suggest if this approach will work?

Thanks a ton Igor. Your comments helped alot :smileyhappy: