Ubuntu16.04, Kernel, and Boot image Issues

steven_hyper

Hello Firefly community,

I am running to some issues getting the boot image that I compiled from the firefly github repository on a host machine running Ubuntu 14.04 to work on the rk3288 firefly dev board.

I am able to compile the latest kernel by following the instructions provided at http://wiki.t-firefly.com/index. ... 288/Build_kernel/en. I am also able to build the Initramfs and build the boot image. However, when I flash the boot.img via rkflashtool to the boot partition, the board will always just have a blank screen. I have been trying different rockchip_linux defconfigs and did not get any different outcome.

Have anyone who attempted to build their own kernel and Ubuntu images ran into a similar issue? Or maybe you did things differently from what the firefly team suggests and got a working image.

For reference, I am using the following source code:
- kernel_4.4 (firefly-rk3288 branch): https://github.com/T-Firefly/kernel_4.4
- initrd (for-kernel_4.4 branch): https://github.com/T-Firefly/initrd/tree/for-kernel_4.4

On a side note, once I get a working kernel and boot image, I plan to port the mali kernel driver r12p0 released by ARM. This is because the current mali driver is r9 and I am hoping to improve my performance with OpenGL ES with the newer gpu driver.

Any help would be appreciated. Thanks!

steven_hyper

No, I am not receiving any UART messages from the development board. The screen is just black and I am unable to SSH into the the dev board as well. Also, the green led that normally goes on at power up does not turn on.

I know the development board is not broken because I can flash the old boot image and have the development board work again.

I rebuilt the kernel following the instructions at http://wiki.t-firefly.com/index.php/Firefly-RK3288/UART/en. I added the line

1. CONFIG_SERIAL_ROCKCHIP=y

Copy the code

to the configuration file before compiling. The compilation ends successfully giving me the kernel.img and resource.img. I flash the two image files using upgrade_tool for linux.

I included the config file I am using. Maybe I am using the wrong one?

steven_hyper

Thanks for the help, I managed to get the boot sequence to show now. Unfortunately, the system seems to just hang right after the boot sequence. All I see is a black screen with a blinking cursor.

I have attached a picture of the boot sequence. Any input on what may be wrong would be appreciated.