Vybrid ProcessorsのトピックRe: u-boot size

u-boot size

Nouchi — Wed, 05 Feb 2014 15:42:32 GMT

Hello,

When u-boot size is over 212Kbyte, it doesn't boot on NAND flash?

I use U-Boot 2011.12 from Timesys with their tool chain.

Emmanuel

Re: u-boot size

karina_valencia — Thu, 06 Feb 2014 22:47:54 GMT

timesyssupport can you help with this case?

Re: u-boot size

timesyssupport — Fri, 07 Feb 2014 15:11:18 GMT

Hello Emmanuel,

This is a known issue with the 2011.12 u-boot. This may be resolved for our planned update to a later version of u-boot (2013.07) in 1-2 months. I will let you know when the sources are available.

Thanks,

Timesys Support

Re: u-boot size

Nouchi — Fri, 07 Feb 2014 17:18:18 GMT

Hello,

Is there any workaround until the new version?

Re: u-boot size

timesyssupport — Fri, 07 Feb 2014 19:07:33 GMT

Hello Emmanuel,

There is currently not a workaround for this. dandouglass-b41520 would you have any insight about this size limitation and any possible courses of action to take?

Thanks,

Timesys Support

Re: u-boot size

dan_douglass — Fri, 07 Feb 2014 20:56:36 GMT

Unfortunately, I haven't worked with Vybrid in quite some time. As I remember the code in u-boot was tailored to specific parameters for the NAND device on the board, more or less it is reference code to start from.

Is the NAND device being used identical to the Tower Board? If not, maybe there is some issue with data not being completely written?

Re: u-boot size

Nouchi — Mon, 10 Feb 2014 12:11:44 GMT

Hello Daniel,

For the moment I'm working with the tower board, because my own is not yet ready, but I'm planned to support Micron(first) and Spansion NAND flash.

I need more space to add some features like GPIO and script support to manage ON/OFF push button, DCU and FTM driver (for brightness control) to display splash screen, and NAND_TRIMFFS with some scripts to update UBI fs volume from uboot.

Nice program, isn't it?

Re: u-boot size

Nouchi — Tue, 25 Feb 2014 12:53:55 GMT

Hello,

I found an other issue, if you try to add some some extra args in CONFIG_EXTRA_ENV_SETTINGS, the TWR-VF65GS10 does'nt boot from NAND(works with SD), even if the u-boot size is under 212kbytes (185kbytes).

I need this feature to add some script in order to make field update easier.

Someone can help me on this?

Best regards,

Emmanuel

Re: u-boot size

timesyssupport — Tue, 25 Feb 2014 19:03:25 GMT

Hello Emmanuel,

We will be able to test this when the new version of u-boot (from mfgtool) is available for Vybrid. This version should have better NAND support.

Thanks,

Timesys Support

Re: u-boot size

Nouchi — Wed, 26 Feb 2014 07:59:23 GMT

Hello,

I'm glad to hear it, because these things are going more and more critical for me.