Android 4.4.3 u-boot issue

[srikanthmediset]

Hi,

 I am trying to boot iMX6slevk board with android 4.4.3 and while booting the board is hanging at the below step as I shown below. I am using DRAM of 512 what are the required changes to be done for proper working.

U-Boot 2014.04-08637-gaffa03210f-dirty (Aug 08 2017 - 16:43:51)

CPU: Freescale i.MX6SL rev1.2 at 792 MHz
CPU: Temperature 40 C, calibration data: 0x59a51269
Reset cause: POR
Board: MX6SLEVK
I2C: ready
DRAM:

Regards,

srikanth.

[igorpadykov]

Hi Srikanth

what board used in the case: nxp i.MX6SL EVK reference board or

custom board based on EVK ? If custom board, had board passed ddr test

i.MX6/7 DDR Stress Test Tool V2.70 

Had you tried to boot linux (L3.10.53) with min. configuration ?

How boot image was flashed, was used mfg tool for such purpose ?

Best regards
igor
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[srikanthmediset]

Hi igor,

    Board : iMX6SL EVK reference board

    It passed the DDR test and we updated the calibration values then the u-boot was coming up and was hanging as I posted in the previous post.

    Flashed using MFG tool 4.1.0.

    I didn't get your question "Had you tried to boot linux (L3.10.53) with min. configuration ?" . Can you explain it.

Regards,

srikanth.

[igorpadykov]

Hi srikanth

please try to program images using MFG Tools for android 4.4.3 below

http://www.nxp.com/webapp/Download?colCode=IMX_KK4.4.3_MFG_TOOL&appType=license&location=null&Parent...

and Demo Images

http://www.nxp.com/webapp/Download?colCode=IMX6_KK443_200_ANDROIDDEMOEVKBSP&appType=license&location... 

linux (L3.10.53) with min. configuration means build yocto "core-image-minimal" image, please

check Yocto Guide from documentation package on

http://www.nxp.com/webapp/Download?colCode=L3.10.53_1.1.0_LINUX_DOCS&Parent_nodeId=13376994810717061... 

Best regards
igor

[srikanthmediset]

Hi igor,

   If I try to flash with the MFG tool which you posted above is failing to flash at u-boot.

  And I am trying to flash into eMMC as my board doesn't had SD card support.

  We are not trying to build yocto images.

Regards,

srikanth.

[igorpadykov]

Hi srikanth

in one post you wrote" "Board : iMX6SL EVK reference board"

in another : "my board doesn't had SD card"

what is the board exactly you are using ?

Best regards
igor

[srikanthmediset]

Hi igor,

   Our board is reference  taken from evk board schematic. But we are not using SD card support.

Regards,

srikanth.

[igorpadykov]

Hi srikanth

what memory used in the case: lpddr2 or ddr3 ?

Please run ddr test for custom board and udate uboot/board/freescale/mx6slevk/imximage.cfg

with new ddr coefficients found from ddr test

i.MX6/7 DDR Stress Test Tool V2.70 

Best regards
igor

[srikanthmediset]

Hi igor,

  Memory is LPDDR2

 I did DDR stress test and updated in the cfg file then only u-boot is coming upto DRAM and hanging previously u-boot itself not coming up.

Regards,

srikanth.

[igorpadykov]

Hi srikanth

what is boot media ?

Best regards
igor

[srikanthmediset]

Hi igor,

  Using MFG tool and flashing into eMMC. 

 MFG tool version: Mfgtools-Rel-4.1.0_130816_MX6SL_UPDATER

Regards,

srikanth.

[igorpadykov]

Hi srikanth

to use mfg tools with custom board it is necessary to rebuild

mfg tools firmware (files in firmware folder) with updated

uboot/board/freescale/mx6slevk/imximage.cfg and changes for memory size

(#define PHYS_SDRAM_SIZE in uboot/include/configs/mx6slevk.h), please follow attached

Yocto Guide sect.6.2 The Manufacturing Tool, MFGTool.

Best regards
igor

[srikanthmediset]

Hi igor, 

   Rebuilding MFG tool firmware i didn't understand can you please explain it.

Regards,

srikanth.

[srikanthmediset]

Hi igor,

    RAM size is alredy updated in the file you mentioned above. If you observe the log there is one line Reset cause: POR what this one actually meant does this causing any problem.

U-Boot 2014.04-08637-gaffa03210f-dirty (Aug 08 2017 - 16:43:51)

CPU: Freescale i.MX6SL rev1.2 at 792 MHz
CPU: Temperature 40 C, calibration data: 0x59a51269
Reset cause: POR
Board: MX6SLEVK
I2C: ready
DRAM:

Regards,

srikanth.

[igorpadykov]

Hi srikanth

you can debug uboot, finding place where it is hanged, adding debug printfs.

Best regards
igor