Prebuilt RVVM EFI firmware (OpenSBI 1.4, U-Boot 2024.7)

Recommended firmware for RVVM riscv64 (Works under QEMU as well)

HOWTO:

• Use fw_payload.bin as a board EFI firmware to boot the next stage from the storage drive, this is recommended for existing OS images like Ubuntu, Fedora, FreeBSD, Haiku, and for images built with archriscv-scriptlet.
• Be aware that some images like Ubuntu may require more than default 256M of RAM, otherwise they'll crash. Pass -m 2G or the likes to the VM to be sure.

Example usage: rvvm fw_payload.bin -m 2G -i haiku-nightly.image

Also:

• Use fw_jump.bin as an SBI bootrom for a custom kernel payload (SBI->Linux, etc) - see https://github.com/LekKit/patches-misc/releases/tag/rvvm-linux-6.8

The fw_payload.bin EFI firmware is a combination of fw_jump.bin M-mode bootrom, and u-boot.bin S-mode firmware

Sources:

• Upstream OpenSBI 1.4: https://github.com/riscv-software-src/opensbi
• U-Boot 2024.7 with NVMe and EFIFB support enabled