[Dev] How to build and support GRUB for Beaglebone Black?

coadde coadde at riseup.net
Fri Oct 9 06:04:52 GMT 2015

Andrei Borzenkov:
> How do you start GRUB in the first place? On U-Boot platforms GRUB
> cannot be run without U-Boot at all (it relies on U-Boot API for
> disk/net IO), so the simplest way to get back to U-Boot is to exit GRUB :)
> Otherwise please explain in more details how you build and start GRUB on
> this platform.

I built grub under this configuration (GRUB for U-Boot platforms):


	./configure \
		--with-platform="uboot" \
		--target="arm" \
		--disable-efiemu \
		--enable-mm-debug \
		--enable-nls \
		--enable-device-mapper \
		--enable-cache-stats \
		--enable-boot-time \
		--enable-grub-mkfont \
		--enable-grub-mount \
		--prefix="/usr" \
		--bindir="/usr/bin" \
		--sbindir="/usr/bin" \
		--mandir="/usr/share/man" \
		--infodir="/usr/share/info" \
		--datarootdir="/usr/share" \
		--sysconfdir="/etc" \
		--program-prefix="" \
		--with-bootdir="/boot" \
		--with-grubdir="grub" \
		--disable-silent-rules \


Those configurations comes from our grub's PKGBUILD [0] and our patch to
detect device tree folder [1]. Those files were created to build grub
for Parabola.

BTW, i created 2 U-Boot packages, the first one called
uboot-beaglebone-linux-libre to start up U-Boot without GRUB for our
linux-libre package. Here are the PKGBUILD [2] and a custom patch with
our custom modifications [3] based on uboot-beaglebone from Arch ARM
[4][5]. It was tested and works well in Parabola, also we put a
announcement [6] about it.

Note: we put linux-libre as suffix in our uboot-beaglebone package for
each specific kernel available in Parabola (eg.
uboot-beaglebone-linux-libre-lts for linux-libre-lts) because our kernel
images use custom names (eg. vmlinuz-linux-libre-grsec) in comparison to
Arch ARM (eg zImage for all kernels) to allow for 2 or more kernels in
the same system once we add GRUB compatibility for the future.

The second one is called uboot-grub-beaglebone, this uboot package was
created to start GRUB in ARMv7, it was based on
uboot-beaglebone-linux-libre. Here are our PKGBUILD [7] and patch [8]
for this package.

Otherwise, we've created a install file to install GRUB automatically
after installing [9], it was based on uboot-beaglebone-linux-libre too [10]


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 801 bytes
Desc: OpenPGP digital signature
URL: <https://lists.parabola.nu/pipermail/dev/attachments/20151009/e1f29151/attachment.sig>

More information about the Dev mailing list