OK... I did some debugging using lauterbach and loading the U-boot to RAM. Looks like U-boot is getting stuck in one of the ns16550_reinit function which is getting called from serial_putc function. I am not sure why this is happening all of a sudden unless RS232 transeiver on the board has gone bad...
Any ideas from on how to debug this and to confirm UART on board is good/bad are appreciated. Thanks, Meher On 12/28/06, Diego Dompe <[EMAIL PROTECTED]> wrote:
If you load the elf image, it already have embedded the load address and the entry point, the lauterbach will set the pc to the proper location, just run... However I think in most places what's available is the uboot image on uboot format, so you need to download the source and compile by yourself. Anycase, I'm attaching a ELF version of the u-boot running on my board on a private mail to not pollute the mail list, it will save you some time. On Dec 28, 2006, at 4:54 PM, Meher wrote: > Diego, > Thanks for the info. Can you tell me what address should I load it > to? Can I load to any address in the DDR? and how do I specify the > address CPU should jump to? I mean entry point for the U-boot? > > Regards, > Kalyan > > On 12/28/06, Diego Dompe <[EMAIL PROTECTED]> wrote: >> You can use the lauterbach to load the elf image of uboot and execute >> it. Then you can reflash uboot. >> >> data.load.elf <path>/<uboot>/<image> >> >> On Dec 28, 2006, at 4:31 PM, Meher wrote: >> >> > Bob, >> > Thanks for the information. That atleast takes away any apparent >> > hardware failures out of the picture. If u-boot doesn't come up is >> > there anyway to talk to the EVM if I do not have CCS? >> > >> > Regards, >> > Meher >> > >> > On 12/28/06, McGowan, Bob <[EMAIL PROTECTED]> wrote: >> >> >> >> Meher, >> >> >> >> Other than the Ethernet LEDs, the DS9 LED is the only LED that >> >> lights up >> >> for me following booting U-boot from NAND. >> >> >> >> Regards, >> >> Bob >> >> >> >> -----Original Message----- >> >> From: [EMAIL PROTECTED] >> >> [mailto:[EMAIL PROTECTED] On >> >> Behalf Of Meher >> >> Sent: Thursday, December 28, 2006 4:13 PM >> >> To: [email protected] >> >> Subject: Re: Booting problem on Davinci EVM >> >> >> >> Hi, >> >> Can anyone who is currently using the davinci EVM let me >> know how >> >> many LED's they see glowing on the board on powerup? On my board I >> >> see >> >> only one LED and it is DS9 which is the 5V LED (It is near the RED >> >> SW1 >> >> power toggle switch) Other than this one LED I do not see anything >> >> coming up. Can some one please confirm this? >> >> >> >> Regards, >> >> Meher >> >> >> >> On 12/28/06, Meher <[EMAIL PROTECTED]> wrote: >> >> > Hi, >> >> > Looks like I screwed upo something on the davinci board :( I >> >> > changed the kernel config to include the kernel hacking >> support and >> >> > booted the board and kernel came up fine. I tried to restart the >> >> board >> >> >> >> > and BOOM! I do not see anything on my serial console :( Any >> idea on >> >> > how to figure out if something went wrong with my U-boot in the >> >> flash >> >> > or if the board itself has gone bad? >> >> > >> >> > -- >> >> > Regards, >> >> > Meher >> >> > >> >> _______________________________________________ >> >> Davinci-linux-open-source mailing list >> >> [email protected] >> >> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open- >> >> source >> >> >> > _______________________________________________ >> > Davinci-linux-open-source mailing list >> > [email protected] >> > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open- >> source >> >> > > > -- > Regards, > Meher
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