Mity CPU Platforms » MitySOM-335x (ARM Cortex-A8 Based Products)

08/16/2013

JC 01:29 PM Software Development: RE: NAND memory map question

So looking in the following file you can see that there is support in the MLO for having a redundant environment partition, although we don't use it. It would probably not be difficult for someone to also add a redundant u-boot partitio... Jonathan Cormier

JC 01:08 PM Software Development: RE: NAND memory map question

John,
Thanks for the clarification, I was looking in the kernel repository not the U-boot one.
I am not too familiar with the u-boot mlo implementation. I'm not sure what it would take to have the MLO support two locations for the... Jonathan Cormier

11:53 AM Software Development: RE: NAND memory map question

Hi Jonathan,
Here is the wiki for the AM335x Uboot users guide:
http://processors.wiki.ti.com/index.php/AM335x_U-Boot_User%27s_Guide#SPI_2
The mityarm335x.h is from the latest git repo as described on your wiki:
http://supp... Anonymous

JC 11:15 AM Software Development: RE: NAND memory map question

You can read up on the TI processor ROM boot process in section 26 of the AM335x Technical Reference Manual. http://www.ti.com/lsds/ti/arm/sitara_arm_cortex_a_processor/sitara_arm_cortex_a8/am335x_arm_cortex_a8/tech_docs.page?rootFamily... Jonathan Cormier

JC 11:10 AM Software Development: RE: NAND memory map question

Could you please provide a reference to these TI wiki pages?
What git repo did you locate the referenced mityarm335x.h file?
Does this wiki page help? http://support.criticallink.com/redmine/projects/armc8-platforms/wiki/UBIFS_Nand... Jonathan Cormier

08/15/2013

04:48 PM Software Development: NAND memory map question

Hi,
We are currently running the AM3352 cpu module and was hoping for some clarification on where everything sits in
NAND as certain comments in files don't seem to line up with TI's wiki pages or the mityarm335x.h file
in /inc... Anonymous

07/19/2013

MS 10:44 AM PCB Development: RE: EMC Emissions from MityArm 335X MOdule

Hi Mike,
I am good for now. Thanks for the information.
Regards,
Mike
Michael Schantzen

07/18/2013

BD 03:48 PM Software Development: RE: NFS configuration

Great news Leonid! Thanks for the detailed error messages.
-Bob
Bob Duke

LV 01:32 PM Software Development: RE: NFS configuration

Bob,
That was the problem. It's booting now.
Thanks everybody,
Leonid Leonid Volpert

BD 12:09 PM Software Development: RE: NFS configuration

Leonid,
One more suggestion: did you untar the sample filesystem as root? Or did you untar it as a normal user?
For example (you'll need to adjust the filesystem.tgz location and name): Bob Duke

01:14 PM Software Development: RE: 3352 Module can't boot. Unknown memory type.

Tim,
It does boot with a MLO and uboot built from the repository. Just need to put our
SPI changes back in.
Thanks,
John C. Anonymous

11:37 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

Ok Tim,
I'll pull that in and give it a try.
Thanks,
John C. Anonymous

TI 11:35 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

John
The error message you see about "Error - Factory Configuration Invalid" is because the u-boot you downloaded is too old (sorry about that)
and it doesn't understand the new factory config block.
We are in the midst of updating "e... Tim Iskander

11:21 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

Tim,
The error is using the latest mlo and uboot from the Critical Link website.
John C. Anonymous

TI 11:15 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

John
All the 3352 based modules use DDR3, so will all require the new u-boot.
cheers
/Tim Tim Iskander

11:05 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

Tim,
Just to add some more info. We tried booting from three different 3352 modules and
they all have the same issue.
John C. Anonymous

10:25 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

Tim,
As a test I downloaded the MLO and uboot from your web site and got the following when trying to boot the 3352 module:
-------
U-Boot SPL 2011.09-00000-g045cda5 (Jul 12 2012 - 16:03:00)
Texas Instruments Revision detection u... Anonymous

10:14 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

Thanks Tim,
I'll give it a try.
John C. Anonymous

TI 10:12 AM Software Development: RE: 3352 Module can't boot. Unknown memory type.

John
You should pull the latest from the AM335XPSP_04.06.00.08 branch on our git repo.
Support for the DDR3 memory configurations came along with a "base update" to the
newer PSP uboot.
cheers
/Tim Tim Iskander

09:27 AM Software Development: 3352 Module can't boot. Unknown memory type.

Hi,
We've been running the 3359 modules for some time and have shifted to the 3352. The error
message is:
--------------
U-Boot SPL 2011.09-00000-ge301766-dirty (May 01 2013 - 16:46:12)
Texas Instruments Revision detection unim... Anonymous

MW 07:32 AM PCB Development: RE: EMC Emissions from MityArm 335X MOdule

Hi Mike,
OK, those numbers were for the CPU running at 500 MHz. The speed of the CPU may change based on what power management scheme (the CPU governor) that is selected in the kernel configuration.
Our default kernel selects "per... Michael Williamson