Texas Instruments 66AK2Gx Manuale utente

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Demonstrating

U-Boot from SPI/QSPI for 66AK2G

SPI

Master

SPI

Slave

Quad-SPI

Master

SPI

Slave

K2G EVM Console capture SPI NOR boot configuration

To tftp get the prebuilt .gph file to the EVM memory, set up the tftp server and

configure serverip and tftp_root of the u-boot environment variables:

=> setenv serverip 158.218.109.194

=> setenv tftp_root psdk4209-keg

Once these are set up and in u-boot prompt, run the u-boot script get_uboot_net

to retrieve the file, and burn_uboot_spi to program the NOR flash:

=> run get_uboot_net

=> run burn_uboot_spi

K2G GP EVM Technical Reference Manual

http://www.ti.com/lit/sprui65a

K2G EVM Console Capture QSPI configuration

To retrieve the MLO from SD card, be sure the mmc is responding by

rescanning it. Then, load the MLO file from mmc with fatload command.

=> mmc rescan

=> fatload mmc 0 ${loadaddr} MLO

To retrieve the file from network, the tftp server needs to be set up, and

the serverip and ipaddr of the u-boot environment variables need to be

set. Then, tftp the prebuilt MLO file from the tftp server.

=> setenv serverip tftp.server.ip.addr

=> setenv ipaddr evm.ip.addr

=> tftp ${loadaddr} ${serverip}:psdk4209-k2g/MLO-k2g-evm

K2G GP EVM Technical Reference Manual

http://www.ti.com/lit/sprui65a

K2G EVM Console capture: Kernel boot

In this example, the network boot is used with an NFS-mounted

filesystem. With this kernel boot option, the u-boot environment

variables boot, serverip, nfs_root, and tftp_root need to be

configured:

=> setenv boot net

=> setenv serverip 158.218.109.194

=> setenv nfs_root /nfs/nfs_fs1

=> setenv tftp_root psdk4209-keg

Once configured, the system will be able to boot to the kernel prompt.

For More Information

•66AK2x Multicore DSP + ARM Processors:

http://www.ti.com/processors/dsp/c6000-dsp-arm/66ak2x/overview.html

•Processor SDK for 66AK2Gxx Processor:

http://www.ti.com/tool/processor-sdk-K2G

•Evaluation Modules for the 66AK2Gxx User’s Guide (TRM):

http://www.ti.com/lit/sprui65

•Processor SDK U-boot User’s Guide:

http://processors.wiki.ti.com/index.php/Linux_Core_U-Boot_User%27s_Guide

•For questions about this training, refer to the E2E Community Forums for Sitara

Processors at http://e2e.ti.com/support/arm/sitara_arm/f/791/t/277411