On Fri, Jun 14, 2024 at 1:04 AM Dhruva Gole d-gole@ti.com wrote:
Robert,
On Jun 13, 2024 at 16:51:24 -0500, Robert Nelson wrote:
On Thu, Jun 13, 2024 at 4:47 PM Robert Nelson robertcnelson@gmail.com wrote:
On Thu, Jun 13, 2024 at 3:06 AM Dhruva Gole d-gole@ti.com wrote:
The Kernel Image and DTB files are supposed to be picked from the rootfs of the SD Card, this fails in legacy boot flow because bootpart is set to 1:1. Fix it.
and where is that rule defined?
Production boards ship with Kernel Image and DTB's in the 1st fat partition..
Besides, u-boot should scan for extlinux.conf on "any" partition.
I can see where you come from, and I agree on the above points when it comes to stdboot. However when a user wishes to use legacy boot, and in the case there isn't extlinux.conf in such a case u-boot will rely on information in the env file (please correct me if my understanding is wrong).
The env file says: bootdir=/boot
Thus u-boot ends up looking for Image and dtb in /boot/Image under BOOT partition, and ultimately fails, because the /boot/Image path is generally found inside the root partition ie. 1:2
The idea of this patch is to keep support for such legacy boot alive, if you feel there's another way to do this feel free to suggest.
For BeagleBoard.org we never used the legacy boot path on this target (or BeagleBone-AI64), this was put in place mostly for TI's u-boot scripts. ;)
Regards,