nand flash factory programming using u-boot

pietercardoen — Wed, 30 Nov 2016 16:24:21 GMT

Dear

How do you need to program a nand flash using u-boot? I have created an ubifs image using Yocto. This image is loaded using the mfgtool to RAM. I now want to program the nand flash and I'm facing trouble. This is the way I do it:

> setenv mtdparts mtdparts= nand_flash:32m(kernel),32m(dtb),64m(root),-(data)

> setenv mtdids nand0=nand_flash

> nand erase.chip

> mdtparts

> ubi part root

> ubi create root

> ubi write 0x8380 0000 root 0x12A0000

(0x83800000 => the ubifs image is loaded there and 0x12A0000 is the size of the image)

> bootz ${loadaddr} - ${fdt_addr}

I get:

VFS: Cannot open root device "ubi0:root" or unknown-block(0,0): error -19
[ 1.423467] Please append a correct "root=" boot option; here are the available partitions:
[ 1.431983] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Is this a good way of working or is it preferred to use another method to progam my imx6ul device?

Best regards

Pieter

Re: nand flash factory programming using u-boot

igorpadykov — Thu, 01 Dec 2016 08:49:41 GMT

Hi Pieter

one can try patch for U-Boot that integrates nxp kobs utility into U-Boot

[U-Boot] i.MX6 nand bootupdate, reworked - Patchwork

nxp provides only mfg tools option for nand programming, use *.vbs

script for board with nand, like mfgtool2-yocto-mx-sabreauto-nand.vbs

Best regards
igor
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i.MX Processorsのトピックnand flash factory programming using u-boot

nand flash factory programming using u-boot

Re: nand flash factory programming using u-boot