• I use the master revision (d5abcf94c7 ti: boot: Register the MMC controllers in SPL in the same way as in u-boot) from mainline u-boot, with the patches I will attach here
• I generated a boot.scr with the files I will attach.

• The Ethernet stops working after some point
• It stops working really fast under high load traffic
• It seems to be related to the PHY driver somehow, and autonegotiation.

Denis.

so, does the patchset produce better results than sed or not? which solution would you like to see used in a new uboot package?

a package called uboot-am335x_green based on that very commit and those patches now exists in [libre-testing], although you probably won't see it on the website.

would you like to give it a try?, I don't have the hardware to test it. please write back with any news and suggestions.

I'd like to but I cannot do it right now as:
- My beaglebone green is now my main server and is hosting several services that I depend on.
- It's near where I currently reside but not in the same place, and I would need to dedicate time to go at the location where the beaglebone green is and do some testing.

• Create a microSD card to test the new bootloader with that.
• Carry out the test when I go to the place where the beaglebone green is.

I'll report here when I'll have tested it.

I now have a second BeagleBoneGreen so I can carry out tests.

Barebox supports the "BeagleBone", so I gave a try.
The code can detect which BeagleBone it runs on, but it doesn't have any support for the BeagleBoneGreen and detects it as a BeagleBoneBlack.

• A lot of nodes and pads required to make HDMI work on the Black version
• The Green seem to have an UART2 that I didn't find on the Black.

• The BeagleBoneBlack is supported, whereas, it is not in u-boot.
• Ethernet works in Linux and Barebox

• The eMMC is detected and works fine but I can't manage to detect an external microSD anymore, including in Linux.
• USB gadget support is absent in Barebox for the BeagleBone's PHY or USB controller. This is not very convenient: The stock u-boot had the ums command that could export the eMMC over usb with the 'ums 0 mmc 1' command.
• It probably doesn't have a PKGBUILD but I can make one if needed.

Being far more familiar with Barebox than with u-boot and having a strong preference for Barebox as a user, I will try to work with upstream to fix the issues and make a PKGBUILD when it's good enough to be used.

That said I will also try to test the u-boot package soon.

GNUtoo wrote:

Being far more familiar with Barebox than with u-boot and having a strong preference for Barebox as a user, I will try to work with upstream to fix the issues and make a PKGBUILD when it's good enough to be used.

That said I will also try to test the u-boot package soon.

please do. I'll be happy to have either package.

Sorry for the delay, I finally tested the package, and here are some comments below:

The flash instructions in post_install script prints the following:

# dd if=/boot/MLO of=/dev/mmcblk0 count=1 seek=1 conv=notrunc bs=128k
# dd if=/boot/u-boot.img of=/dev/mmcblk0 count=2 seek=1 conv=notrunc bs=384k

If an microSD card is inserted, it will install the bootloader there.
To boot on the internal eMMC, mmcblk1 should be used instead.
Having the bootloader on the internal eMMC makes more sense to me.

To make it work I also needed to inform u-boot about my rootfs with:

# echo "root=/path/to/rootfs >> /boot/uEnv.txt

And finally u-boot environment has:

bootdir=/boot

# cd /boot
# ln -s . boot

Beside that everything seem to work fine so far, but I didn't do extensive tests.

Denis.

It seems that the u-boot also need to pass some extra argument such as rw to have the root filesystem mounted read-write, this can be made trough:

optargs=coherent_pool=1M rw

And this time the Ethernet seem to work fine so far, Linux detected the right PHY, and I ran iperf3 during several minutes without any issues. Besides I never saw the Ethernet link switch to 1000 like I probably had back then.

Denis.

Denis.

• The Beaglebone green is supported by upsrteam u-boot => We need to make an uboot4extlinux-am335x
• The Beaglebone black is supported by upsrteam barebox but not the beaglebone green. Detection for it needs to be added by reading the eeprom instead of the SOC version.