uboot

https://github.com/u-boot/u-boot

为什么路由器总是使用 uboot ?

https://docs.u-boot.org/en/latest/board/emulation/qemu-x86.html

make qemu_arm64_defconfig

当然，需要 python 的支持，很诡异的

python -m venv .venv
source .venv/bin/activate

qemu-system-x86_64 -m 8G -smp 4 -bios /tmp/b/qemu-x86_64/u-boot.rom
-drive file=root.img,if=virtio,driver=raw
-drive file=ubuntu-23.04-desktop-amd64.iso,if=virtio,driver=raw

相当有趣

doc/arch/x86/x86.rst

U-Boot also supports booting directly from x86 reset vector, without coreboot. In this case, known as bare mode, from the fact that it runs on the ‘bare metal’, U-Boot acts like a BIOS replacement. The following platforms are supported:

linuxboot

https://www.linuxboot.org/

https://stackoverflow.com/questions/53681838/how-does-linuxboot-differs-from-coreboot-in-the-firmware-phase : 仔细阅读

• 为什么感觉 linuxboot 就是 coreboot 了啊?

https://lwn.net/Articles/748586/

Most notably, the Intel Management Engine (ME) runs a complete Minix operating system, while System Management Mode (SMM) is used to run code for certain events (e.g. laptop lid gets closed) in a way that is completely invisible to the running OS.

完全合理，拯救者的 Fn + Q 在 windows 上和 Linux 上完全一样。

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