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Author Topic: New user attempting to access uboot via serial  (Read 1392 times)
SuperRoach
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« on: June 09, 2009, 08:10:11 AM »

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I have been trying to connect to the sheeva to access uboot. Using windows (xp), I plug the usb into the pc, mini usb to plug. I open putty in serial mode (after installing the usb to serial drivers) and leave it there, reboot plug. I never see any console input. What am I missing?

I am trying to follow through this excellent guide:
http://www.openplug.org/plugwiki/index.php/Configure_U-Boot_on_the_Plug_Computer

I have downloaded his Debian image, and am trying to boot that usb flash plugged in to it.

Could anyone help point me in the right direction?
I resolved above by making sure I was using the right com port :/
I have updated the uBoot version, appear to have borked the stock install - I do not get past "booting" after uncompressing on the nand.

I am trying  to set up the usb boot using the settings on the page above, and this section is what I have got to:

Quote
Marvell>> setenv bootargs_root 'root=/dev/sda1 rootdelay=10'
Marvell>> setenv bootcmd_usb 'usb start; ext2load usb 0:1 0x0800000 /boot/uInitrd; ext2load usb 0:1 0x400000 /boot/uImage'
Marvell>> setenv bootcmd 'setenv bootargs $(console) $(bootargs_root); run bootcmd_usb; bootm 0x400000 0x0800000'
Marvell>> saveenv
Saving Environment to NAND...
Erasing Nand...Writing to Nand... done
Marvell>> run bootcmd
(Re)start USB...
USB:   scanning bus for devices... 2 USB Device(s) found
       scanning bus for storage devices... T

It halts at this point.

The usb stick is plugged in, so im not sure how i can investigate it more?
« Last Edit: June 09, 2009, 08:45:02 AM by SuperRoach » Logged

guidol
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« Reply #1 on: June 15, 2009, 06:46:59 AM »

It halts at this point.
The usb stick is plugged in, so im not sure how i can investigate it more?

Hi,
did you try to use the settings/instructions from the Webpage from Martin Michlmayr?
His boot-arg's seems to be the same you used before, but you could check if the USB-Stick is created properly.

My best thing was to update the internal-flash ubuntu to a working one (getting updates, installing wget via apt-get)
and create the partitions with the sheevaplug (incl. unpacking the tar).

You could try to completly reset the enviroment with the detaila on this page

Or try another USB-Stick...some are not so "good"....which type do you got...?

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