Hello Tom,

as discussed on IRC it would make sense to provide GRUB for testing in U-Boot via gitlab.denx.de. Building could be executed via Gitlab CI.

These are the build commands that worked for me to build GRUB for RISC-V 64bit on Debian Buster after installing quite a few dependencies:

git clone https://git.savannah.gnu.org/git/grub.git cd grub git checkout grub-2.04 ./bootstrap ./configure --target=riscv64 --with-platform=efi \ CC=gcc \ TARGET_CC=riscv64-linux-gnu-gcc \ TARGET_OBJCOPY=riscv64-linux-gnu-objcopy \ TARGET_STRIP=riscv64-linux-gnu-strip \ TARGET_NM=riscv64-linux-gnu-nm \ TARGET_RANLIB=riscv64-linux-gnu-ranlib make ./grub-mkimage -O riscv64-efi -o grubriscv64.efi --prefix= -d \ grub-core cat chain configfile echo efinet ext2 fat halt help linux \ lsefisystab loadenv lvm minicmd normal part_msdos part_gpt reboot \ search search_fs_file search_fs_uuid search_label serial sleep test \ true

grubriscv64.efi is the file that we would have to copy to as grub.efi to the tftp directory when testing.

Best regards

Heinrich