MfgTool Hang Issue

[tsung-chihwang]

Hi,

Our processor model is IMX6UL.

I met a very strange symptom while downloading image into flash through MfgTool.

I used MfgTool to download images(Uboot, kernel, dtb, rootfs).
The result of downloading procedure is pass.

However, target cannot be boot up , even no any uboot log.

This is may due to my wrong uboot image, I am not sure so far.

So, I tried to download images again.

But, MfgTool always hang on "Loading U-boot".

It seems some error while boot ROM handle this command?

Could you help me to re-download images into my target via MfgTool?

By the way, this target is HAB disabled. (I checked this through "hab_status" commnad of uboot)

BR,

carter

[igorpadykov]

Hi carter

for new board mfg tool firmware (files in /firmware folder) should be rebuilt

with new ddr calibration coefficients found from ddr test

(put them in uboot/..mx6ul_14x14_evk/imximage.cfg)

i.MX6/7 DDR Stress Test Tool V2.92 

Rebuilding is described in sect.6.2 Manufacturing Tool, MFGTool attached Yocto Guide.

Best regards
igor
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[tsung-chihwang]

Hi Igor,

I am not sure what you mean "for new board mfg tool firmware (files in /firmware folder) should be rebuilt".

In the first time, I can download images(uboot, kernel, and rootfs) through MfgTool into the target.

But the uboot is wrong(this uboot is for sd card, however I downloaded it into flash)..
After that, I cannot re-download images via MfgTool.

The target is always in serial download mode, why I cannot download images again through MfgTool?

BR,

carter

[igorpadykov]

Hi carter

since mfg tool is small linux image the same procedure should

be implemented for it when changing board. Original mfg tool from link

i.MX Software|NXP 

was built for nxp reference boards and may not work for other boards.

So new ddr coefficiaents should be changed in uboot/..mx6ul_14x14_evk/imximage.cfg

and mfg tool rebuilt. Below mfg tool overview which may be helpful:

AMF-ACC-T1652 

Best regards
igor

[tsung-chihwang]

Hi Igor,

I got it.

But why the first time of downloading is successful?

After I downloaded bad uboot into flash, then I cannot use the same MfgTool to download images again.

BR,

carter

[tsung-chihwang]

I just found one of root cause.
I downloaded the uboot of sd card to flash..

However, if it hang on wrong uboot, why MfgTool still can find the USB-HID device?

And why I cannot use MfgTool to download correct images to flash again?