Hi Forum I am trying to use U-Boot and TFTP on my BBB to run a U-Boot standalone program (examples/standalone/hello_world.bin).
I download the lastest u-boot and cross compiled it on a ubuntu x86 PC. wget ftp://ftp.denx.de/pub/u-boot/u-boot-latest.tar.bz2 cd u-boot-2015.04/ tar -xjf u-boot-latest.tar.bz2 cd u-boot-2015.04/ make sandbox_defconfig tools-only sudo install tools/mkimage /usr/local/bin make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- am335x_boneblack_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- I copied the produced MLO and u-boot.img to SDCARD and booted my BBB black and wrote them to the eMMC using. export DISK=/dev/mmcblk1 sudo dd if=/dev/zero of=${DISK} bs=1M count=16 sudo dd if=./MLO of=${DISK} count=1 seek=1 bs=128k sudo dd if=./u-boot.img of=${DISK} count=2 seek=1 bs=384k I copied the cross compiled helloworld.bin to a TFTP server (tftpd-hpa). After booting the BBB I enter the following commands U-Boot# setenv autoload no U-Boot# dhcp DHCP client bound to address 192.168.0.62 (1005 ms) U-Boot# setenv serverip 192.168.0.86 U-Boot# setenv bootfile hello_world.bin U-Boot# bootp link up on port 0, speed 100, full duplex BOOTP broadcast 1 DHCP client bound to address 192.168.0.62 (1005 ms) U-Boot# tftp 0x80200000 link up on port 0, speed 100, full duplex Using cpsw device TFTP from server 192.168.0.86; our IP address is 192.168.0.62 Filename 'hello_world.bin'. Load address: 0x80200000 Loading: # 119.1 KiB/s done Bytes transferred = 610 (262 hex) U-Boot# setenv bootargs console=ttyO0,115200n8 U-Boot# go 0x80200000 ## Starting application at 0x80200000 ... Then I just get garbage on my screen. Not the text that I expect from the standalone program. Could some one point me to towards what I have done worng. Cheers Joshua -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
