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

04/10/2013

JC 03:33 PM Software Development: RE: Assigning params from memory in u-boot

John C.,
Looks like md might do what you want.
/* Memory Display
*
* Syntax:
* md{.b, .w, .l} {addr} {len}
*/
md.l 80000000 1
80000000: 807fffe0 ....
Unfortunately its output seems rather verbose.
http://sup... Jonathan Cormier

JC 03:21 PM Software Development: RE: Assigning params from memory in u-boot

John C.
Heres a link to the source code for the itest command.
http://support.criticallink.com/gitweb/?p=u-boot-mityarm-335x.git;a=blob;f=common/cmd_itest.c;h=2a238a43e5d13e56db36665562162eee5e512705;hb=HEAD
It doesn't have any op... Jonathan Cormier

02:47 PM Software Development: RE: Assigning params from memory in u-boot

Tim and Mike,
I found this command that works in testing the contents of memory. Is there any way to get that value into
a param?
if itest.l *80000000 == 80800020; then echo error; fi;
Thanks,
John C. Anonymous

08:40 AM Software Development: RE: Assigning params from memory in u-boot

Thanks Tim and Mike,

I think that unless it is an easy port of updating/saving the u-boot environment params(like in I need to be
done today), modifying one of the u-boot commands might be the way to go. We also have another l... Anonymous

TI 08:15 AM Software Development: RE: Assigning params from memory in u-boot

Not sure if this will do what you really want, but if you load the image from flash (read the max image size into ram, thus avoiding the need to know it beforehand)
you can then run the imi command on it (as it has a u-boot image header... Tim Iskander

MW 07:13 AM Software Development: RE: Assigning params from memory in u-boot

Hi John,
u-Boot doesn't really have much for interpretative type scripting. I don't think you can accomplish this with the stock u-Boot.
Options:
1. You could easily extend the u-Boot crc32 command or add your own to create a e... Michael Williamson

04/09/2013

10:38 PM Software Development: RE: Assigning params from memory in u-boot

Hey Jonathan,

The issue is that we are burning our image into flash from our StarterWare code base. The new
StarterWare image is burned into SPI flash memory location 0x300000 and has a mkimage header. When y... Anonymous

JC 04:35 PM Software Development: RE: Assigning params from memory in u-boot

I'm unsure how to do what your looking for. All the references I could find have you set the image size in an environment variable when it is flashed to the spi flash.
Example: http://wiki.atlas-embedded.com/index.php?title=Flashing_Li... Jonathan Cormier

04:08 PM Software Development: Assigning params from memory in u-boot

Hi,
Were are in the final stages of booting our StarterWare image from uboot. Currently we have our compressed image
loaded into SPI flash with a mkimage header attached on the top. I am trying to make a uboot script that will loa... Anonymous

04/04/2013

03:07 PM Software Development: RE: No unzip in MityArm uboot?

Thanks Jonathan,
I added #define CONFIG_CMD_UNZIP to the file, rebuilt u-boot and burned it into NAND. So I was able to do the following
from a u-boot prompt and our application runs:
mw.b 0x8C100000 0x00 2E274
sf probe 0:... Anonymous

JC 12:31 PM Software Development: RE: No unzip in MityArm uboot?

In the file include/configs/mityarm335x.h you need to insert
_#define CONFIG_CMD_UNZIP_ Jonathan Cormier

12:10 PM Software Development: RE: No unzip in MityArm uboot?

Where is the board header file?
Thanks,
John C. Anonymous

MW 11:37 AM Software Development: RE: No unzip in MityArm uboot?

You will probably need to rebuild it and enable the optioncommand by adding a CMD_XXX (CMD_ZIP? would need to check) to the board header file.
Many options / features of u-boot may not be enabled in our default u-boot application in o... Michael Williamson

10:38 AM Software Development: No unzip in MityArm uboot?

Hi,
We are running the critical link u-boot version(below) on the MityArm and it appears that there is not a unzip command available. The reason we need it is that the StarterWare image we are running is over 3Mbytes in size and ... Anonymous

03/26/2013

MW 07:12 PM PCB Development: RE: VBACKUP Current Draw

Mark,
Great catch! This is certainly acceptable, and we'll likely modify either our u-boot code or kernel code to disable these pull-downs. Both pins are tied externally (BOOT1 to VRTC via 10K, Boot0 to ground), so there is no need ... Michael Williamson

05:54 PM PCB Development: RE: VBACKUP Current Draw

Mike,
I tested the AM3354 DDR3 module here as well and also saw the ~10uA current draw on VBACKUP.
One other thing I tried worked for me in lowering this current. On your module, it appears that you have the PMIC BOOT0 input tied ... Anonymous

MW 05:25 PM PCB Development: RE: VBACKUP Current Draw

Hi Mark,
For the DDR2 modules, I'm pretty sure you need the -1C revision for the fix. However, the AM3354 DDR3 module should have the RTC fix already applied. I tested the first prototypes here and was able to see 10 uA on them as o... Michael Williamson

05:07 PM PCB Development: RE: VBACKUP Current Draw

Hi Mike,
Thanks for the quick response. I believe I have modules covered in the errata. Of the three modules I've tested with, one is an 80-000444RC-1-D and the other two are 80-000509RL-1B.
I also have one of the AM3354 DDR3 mod... Anonymous

MW 04:08 PM PCB Development: RE: VBACKUP Current Draw

Hi Mark,
We need to confirm what revision of module you have (there was Errata on earlier modules where the VBACKUP draw is quite high). Can you please get the 80- number off the module?
Check the "Module Revision History Page":ht... Michael Williamson

03:54 PM PCB Development: VBACKUP Current Draw

I am attempting to replicate the VBACKUP current draw information you supplied in the Hardware Design section of the wiki. I have a 3359-GX-226-RC module on the MityARM development board. I removed the battery (which was dead by the wa... Anonymous