topic Re: U-boot flash in NAND in i.MX Processors

U-boot flash in NAND

hajimohammed — Wed, 19 Apr 2017 07:18:30 GMT

Hi,

Am using Linux-3.14.38 kernel, i wanted to flash u-boot.imx file to NAND using linux command. When flashing from MFG tool, it's working fine and doing it manually using the below commands to NAND. It flashes successfully to the NAND, when boot its not booting

$ flash_erase /dev/mtd0 0 0

$ kobs-ng init -x -v --chip_0_device_path=/dev/mtd0 u-boot.imx

Have taken the nanddump log for MFG tool and the manual command NAND write.

nandump for MFG TOOL

0x00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x00000010: 00 00 00 00 00 00 6f fb ff ff 46 43 42 20 00 00
0x00000020: 00 01 50 3c 19 06 00 00 00 00 00 08 00 00 40 08
0x00000030: 00 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00
0x00000040: 00 00 04 00 00 00 00 02 00 00 00 02 00 00 04 00
0x00000050: 00 00 0a 00 00 00 03 00 00 00 00 00 00 00 00 00

nanddump for Command Line:

0x00000000: 00 00 6f fb ff ff 46 43 42 20 00 00 00 01 50 3c
0x00000010: 19 06 00 00 00 00 00 08 00 04 40 08 00 00 40 00
0x00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 00
0x00000030: 00 00 00 02 00 00 00 02 00 00 04 00 00 00 0a 00
0x00000040: 00 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00
0x00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

There is difference in values when we compare both. you can see the difference in the nanddump (6f value is flashed at the 0x00000010 address while doing through MFG tool but it got flashed at 0x00000000. location when we do manually)

What could be the reason for this issue. Any suggestions will be helpful

Re: U-boot flash in NAND

Yuri — Wed, 19 Apr 2017 08:20:09 GMT

Hello,

Please double check partitioning for the NAND :

""part_uboot=1"" -s ""part_kernel=2"" -s ""part_dtb=3"" -s ""part_rootfs=4""

Looks like for U-boot /dev/mtd1 should be used.

Have a great day,

Yuri

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Re: U-boot flash in NAND

hajimohammed — Wed, 19 Apr 2017 09:50:53 GMT

Hi,

/dev/mtd0 is configured as U-boot partition , below are the NAND partition details

0x000000000000-0x000000a00000 : "boot"
0x000000a00000-0x000001a00000 : "kernel"
0x000001a00000-0x000002a00000 : "dtb"
0x000002a00000-0x000010000000 : "rootfs"

Re: U-boot flash in NAND

Yuri — Tue, 30 May 2017 08:33:34 GMT

Hello,

You wrote "When flashing from MFG tool, it's working fine ". Please check carefully

the ucl2.xml file - what commands and parameters are used there.

Regards,

Yuri.