Hi Ron Eggler,
On 12/14/2013 05:15 AM, Ron Eggler wrote:
--
ron eggler | semios | senior software engineer
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On December 13, 2013 11:57:29 AM Andreas Bießmann wrote:
Dear Ron Eggler,
On 12/12/2013 10:22 PM, Ron Eggler wrote:
Hi,
I got a SAMA5D31 evaluation kit here, it came with some default
application. I started reading through the getting started guide and
immediately tried to load my own image - MISTAKE!
I started playing around with u-boot trying to get an image from my
tftp
server loaded but now i realize, that I can't get it to hook up to my
LAN. Bad! Because it won't even let me boot the original application
anymore.
When I boot it and my variables look like this:
...
...
Warning: failed to set MAC address
your env is missing an ethaddr
Yes, I know, I had set it to some bogus address but that didn't help either...
Please check whether the bogus address is a valid address, that means, the addr[0] bit 0 can not be 1. For example: 3c:3f:35:28:44:61 the addr[0] is 3c, and (0x3c & 0x01) is zero, then consider it as a bogus valid address.
How can the mac address be missing anyways, shouldn't that be fixed in sillicon?
The MAC address can not be come with silicon. You should set it for your product (need buy from IEEE).
Hit any key to stop autoboot: 0
macb0: PHY present at 0
macb0: Starting autonegotiation...
macb0: Autonegotiation timed out (status=0x7849)
macb0: link down (status: 0x7849)
macb0: PHY present at 0
macb0: Starting autonegotiation...
macb0: Autonegotiation timed out (status=0x7849)
macb0: link down (status: 0x7849)
Wrong Image Format for bootm command
ERROR: can't get kernel image!
U-Boot> printenv
baudrate=115200
bootargs=console=ttyS0,115200 ip=${ipaddr} root=/dev/nfs rw
nfsroot=${serverip}:/full/path/to/rfs
bootcmd=tftp;tftp 21000000 sama5d3x_ek.dtbbootm 22000000 - 21000000
bootdelay=1
bootfile=uImage-3.6-ts-armv7l
ethact=macb0
ipaddr=192.168.1.122
loadaddr=22000000
serverip=192.168.1.121
stderr=serial
stdin=serial
stdout=serial
Environment size: 367/131067 bytes
U-Boot>
What can I do to at least get it to boot the default program again?
Dunno from the given information, maybe it is the missing ethaddr. I can
confirm that loading data via tftp is working on my d34 device. I think
Bo has an d31 handy and could help you.
To get the original code onto your device you could use the sam-ba
application. It's working on Win and Linux, unfortunately not on OS X.
Just plug the provided USB cable into the J20 on your baseboard (not the
J-Link!), switch J9 correclty (I think open it), push and hold PB4 and
push/release PB1, after that sequence startup sam-ba, choose the correct
interface and the 'at91sama5d3x-ek' board.
I did the key combo when the usb was plugged in and now, not even uboot boots up anymore, it seems to be completely blank now. When I launch sam-ba as root (on Linux), I can only select Exit, nothing else is enabled. "Select the connection" seems to be enabled but is empty, nothing there to choose. Also dmesg doesn't show me anything on powert reset... what else can I do from here? :o
First, please check the console output, it should be BootROM. Second, which Linux distribution you are using? If use ubuntu 12.04, you can see a /dev/ttyACMx device, sam-ba will access this device.
Thanks,
Ron
Best regards
Andreas Bießmann
Best Regards, Bo Shen