EVMK2EX: How to Boot u-boot from a TFTP setver

Hi Brian,

I've forwarded this to the software experts. Their feedback should be posted here.

BR
Tsvetolin Shulev

Brian,

While Ethernet boot is supported on Keystone II devices, K2E and K2L PG1.0 has a silicon errata that prevents direct TFTP boot as you can see from Advisory 25 in the silicon errata here:

www.ti.com/.../sprz417b.pdf

The work around is to flash a small secondary bootloader that fixes the issue and re-enters the ROM bootloader as has been described in the errata. For details on how to do this on an EVM, you can refer to the code provided here:
processors.wiki.ti.com/.../KeystoneII_Boot_Examples

Hope this helps.

Regards,
Rahul

Hi Rahul,

I am also working on booting u-boot on K2E device from TFTP server.

So, basically, I will follow the steps mentioned here for K2E devices and boot first stage over UART and the device re-enters to load second stage over ethernet.

http://processors.wiki.ti.com/index.php/KeystoneII_Boot_Examples#Running_Ethernet_examples

Is U-boot build into the above two binary images? i.e., once I boot the device using the above method in two stages,is the U-boot loaded ? Or, should I again copy the U-boot image to the TFTP server taken from Processor SDK? I am seeing that there are pre-built images of Uboot and Linux kernel in Processor SDK.

Thanks,

Ashwini