Embest AM3517 Specifications download pdf (Page 35)

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Net: davinci_emac_initialize

Ethernet PHY: GENERIC @ 0x00

DaVinci EMAC

Hit any key to stop autoboot: 3

Once at this point, the system will count down for 3 seconds. Then press any

key to enter the u-boot shell.

3. U-boot parameter settings

Input the following (input characters in bold) into the u-boot shell.

OMAP3517EVM # setenv bootargs console=ttyS2,115200n8 root=/dev/ram0

rw rootfstype=ext2 initrd=0x81600000,40M

OMAP3517EVM # setenv bootcmd ‘mmc init\;fatload mmc 0 80300000

uImage\;fatload mmc 0 81600000 ramdisk.gz\;bootm 0x80300000’

OMAP3517EVM # saveenv

OMAP3517EVM # boot

Reboot the system after input is complete.

4.3 Linux Function Tests

4.3.1 LED Test

Led1 on the SOC8200 has been used as a power indicator light, led2 can be

used as required.

The following code can be used on Linux systems to test led2.

1. Light LED2.

[root@OMAP3EVM /]# echo -n 1 >/sys/class/leds/led/brightness

2. Extinguish LED2.

[root@OMAP3EVM /]# echo -n 0 >/sys/class/leds/led/brightness

4.3.2 Touchscreen Test

After entering the Linux system, execute the following commands to test the

touchscreen:

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Embest AM3517 Specifications Page 35