[U-Boot] Rockchip RK3288 u-boot with mainline kernel
Hi All,
I've got unsupported RK3288 hardware running the latest git u-boot to SPL as explained in http://git.denx.de/?p=u-boot.git;a=blob;f=doc/README.rockchip. My goal is to run the mainline (ie. not Android) Linux kernel on this hardware and wondered:
- Do I need to get the latest git u-boot to run before I can run the mainline kernel? Or can I use github.com/linux-rockchip/u-boot-rockchip.git, which I have running u-boot fully.
- The device tree seems to be in two places, once via:
resource_tool --image=resource2.img --pack linux/logo.bmp ${DTS}.dtb
that gets put into the resource file and then again at the end of the kernel via CONFIG_ARM_APPENDED_DTB. Do I need both? When I do both I get things like:
.... Unknow param: MACHINE_MODEL:rk30sdk! Unknow param: MACHINE_ID:007! ....
Thanks much for any help.
Rick Bronson
+ A few rockchip people and linux-rockchip
Hi Rick,
On 25 November 2016 at 11:20, Rick Bronson rick@efn.org wrote:
Hi All,
I've got unsupported RK3288 hardware running the latest git u-boot to SPL as explained in http://git.denx.de/?p=u-boot.git;a=blob;f=doc/README.rockchip. My goal is to run the mainline (ie. not Android) Linux kernel on this hardware and wondered:
- Do I need to get the latest git u-boot to run before I can run the
mainline kernel? Or can I use github.com/linux-rockchip/u-boot-rockchip.git, which I have running u-boot fully.
It's up to you - obviously mainline is where the development should be, but there is no requirement that I know of.
Does mainline run on your board?
The device tree seems to be in two places, once via:
resource_tool --image=resource2.img --pack linux/logo.bmp ${DTS}.dtbthat gets put into the resource file and then again at the end of the kernel via CONFIG_ARM_APPENDED_DTB. Do I need both? When I do both I get things like:
.... Unknow param: MACHINE_MODEL:rk30sdk! Unknow param: MACHINE_ID:007!
I don't know much about that. Hopefully someone on the linux-rockchip list knows. But for mainline U-Boot I'm not sure why you would need this?
....
Thanks much for any help.
Rick Bronson
Regards, Simon
Hi Rick,
Am Montag, 28. November 2016, 15:09:05 schrieb Simon Glass:
- A few rockchip people and linux-rockchip
Hi Rick,
On 25 November 2016 at 11:20, Rick Bronson rick@efn.org wrote:
Hi All,
I've got unsupported RK3288 hardware running the latest git u-boot to
SPL as explained in http://git.denx.de/?p=u-boot.git;a=blob;f=doc/README.rockchip. My goal is to run the mainline (ie. not Android) Linux kernel on this hardware
and wondered:
- Do I need to get the latest git u-boot to run before I can run the
mainline kernel? Or can I use github.com/linux-rockchip/u-boot-rockchip.git, which I have running u-boot fully.
It's up to you - obviously mainline is where the development should be, but there is no requirement that I know of.
correct, the (mainline-)kernel runs just fine on both the vendor-fork of uboot as well as on mainline.
Does mainline run on your board?
- The device tree seems to be in two places, once via: resource_tool --image=resource2.img --pack linux/logo.bmp ${DTS}.dtb
that gets put into the resource file and then again at the end of the
kernel via CONFIG_ARM_APPENDED_DTB. Do I need both? When I do both I get things like:
Unknow param: MACHINE_MODEL:rk30sdk! Unknow param: MACHINE_ID:007!
ARM_APPEND_DTB is meant for boards where the bootloader cannot load the devicetree (to old or so) and also cannot be reasonably exchanged. So the append-mechanism was invented to allow bundling the devicetree with the actual kernel image, so that to the bootloader it looks like just any other kernel image.
So you essentially only need one or the other. Also at least mainline uboot also supports the FIT image type, where you can bundle the devicetree in a more generalized way.
For your message I would guess the kernel didn't find a usable devicetree somehow and was falling back to ATAGS-based board selection?
participants (3)
-
Heiko Stübner -
Rick Bronson -
Simon Glass