On 06/11/12 09:47, Mark Jackson wrote:

On 06/11/12 06:16, Hiremath, Vaibhav wrote:

quoted

Where is your DTB? Is it appended to Kernel image?
Can you try below sequence/commands from u-boot?


mmc rescan 0
fatload mmc 0 80000000 am335x-bone.dtb
fatload mmc 0 81000000 uImage
setenv bootargs console=ttyO0,115200n8 mem=256M root=/dev/mmcblk0p2 rw noinitrd rootfstype=ext3 rootwait earlyprink=serial
sendln 'bootm 81000000 - 80000000'



To build DTB files, use "make dtbs" command on your kernel home directory.

That works ... great !!

But now I'm confused, since I thought the DTB was appended to the uImage file.

I have the following in my .config:-

ARM_ATAG_DTB_COMPAT=y
ARM_APPENDED_DTB=y
ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y

And then I create my uImage file using:-

$ make -j 8 ARCH=arm CROSS_COMPILE=arm-linux- uImage
$ make -j 8 ARCH=arm CROSS_COMPILE=arm-linux- am335x-bone.dtb
$ cat arch/arm/boot/uImage arch/arm/boot/am335x-bone.dtb > arch/arm/boot/uImage-dtb.am335x-bone
$ cp arch/arm/boot/uImage-dtb.am335x-bone /media/boot/uImage

Do you now have to load the DTB as a separate file ?

Or should the appended DTB still work ?

Any update on this ?

Cheers
Mark J.