Heya, I have no hands on, and the last I read on the subject was well over a year ago. However, I did a search, and found a pdf document on the subject, and notice some inconsistencies between the steps you've taken, and the step the person who wrote the PDF. http://www.cs.sfu.ca/CourseCentral/433/bfraser/other/BareMetalGuide.pdf
Seems that you're using a different compiler, and not using starterware ? Have a look at the pdf. On Sat, Jul 11, 2015 at 4:29 AM, <[email protected]> wrote: > 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. > -- 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.
