booting a custom am335x board

a little more information. I have tried to use NFS to bring up the system but since there emmc is not formatted, there is no place on the board to mount the rootfs, so linux booting fails.

if there is a way to format the emmc using u-boot commands, such that I can mount NFS on it, then I think I can bring up the system.

any help is greatly appreciated.

thanks,

-Farokh

Hi Farokh,

Check this post: http://e2e.ti.com/support/arm/sitara_arm/f/791/p/363990/1279458.aspx#1279458

hi Biser,

thanks for the link. the link assumes that the board is booted from SD card. I don't have an SD card in my board. I can get the u-boot prompt using UART. I tried to use NFS to boot linux from NFS, but it didn't work, complaining that it doesn't know where to mount file system (no NAND and no SD card).

thanks,

-Farokh

Check this link: http://processors.wiki.ti.com/index.php/AM335x_PSP_User's_Guide#Boot_over_Network_.28Ethernet.29

that's what I actually used. but here it also assumes some internal formatted storage

in 

U-Boot# setenv bootargs 'console=ttyO0,115200n8 root=/dev/nfs nfsroot=<nfs-server-ip>:...
it assumes that /dev/nfs exists. but how should I format the emmc to give it a directory structure. If I can create /dev/nfs then I can boot off the NFS. right now it complains that /dev/nfs doesn't exist.

is it possible to say root=<some memory location like 0x82000000>?

-Farokh

If you boot to kernel login you can use these steps: http://e2e.ti.com/support/arm/sitara_arm/f/791/p/363990/1279458.aspx#1279458

it doesn't get to kernel login, just hangs after complaining and after some time writes CCCCC to the serial port.

-Farokh

Try booting from UART.

can you send the link for UART booting?

-Farokh

Check this link too: http://processors.wiki.ti.com/index.php/Linux_Core_U-Boot_User's_Guide