On Fri, 29 Apr 2022 15:59:44 +0800 Weijie Gao weijie.gao@mediatek.com wrote:
On Fri, 2022-04-29 at 08:15 +0200, Stefan Roese wrote:
Hi Weijie
On 4/29/22 03:23, Weijie Gao wrote:
Hi Marek,
Yes. MT7621 does need such a proprietary binary for DDR initialization and calibration. That's why I submit only the ram-bootable part here.
I'm considering to create a preloader to load and run DDR init&calib binary and ram-bootable u-boot image. The ram-bootable u-boot image can be appended to the proloader to form the flash-bootable bootloader.
The source code of preloader will be uploaded to github.
Just to be sure: You are not implementing this preloader as an U-Boot SPL loader, as this would conflict with U-Boot's GPL compatibility?
Yes. Submitting the source code of this binary also violates MTK's non- disclosure agreement.
Isn't it possible to submit the DDR training code in binary version, and somehow call into it from SPL?
Marek