Bootloader

Redox OS Bootloader

Requirements

These software needs to be available on the PATH at build time:

• mtools
• nasm
• redoxfs-ar

Building

make TARGET=<triplet> BUILD=build all

The <triplet> is one of:

ARCH	Boot Mode	Triplets
i686	BIOS	x86-unknown-none
x86_64	BIOS	x86-unknown-none
x86_64	UEFI	x86_64-unknown-uefi
aarch64	UEFI	aarch64-unknown-uefi
riscv64gc	UEFI	riscv64gc-unknown-uefi

See mk directory for more information of how the build is working.

Entry points

Please read Boot Process in the Redox OS Book for an introductory guide.

In this source code, some interesting files for entry points are:

• BIOS boot stages: asm/x86-unknown-none/bootloader.asm
• BIOS boot entry: fn start at src/os/bios/mod.rs
• UEFI boot entry: fn main at src/os/uefi/mod.rs
• Common boot process: fn main at src/main.rs
• UEFI kernel entry: fn kernel_entry in each arch:
  • x86_64: src/os/uefi/arch/x86_64.rs
  • aarch64: src/os/uefi/arch/aarch64.rs
  • riscv64gc: src/os/uefi/arch/riscv64/mod.rs

Debugging

QEMU

make TARGET=<triplet> BUILD=build qemu

How To Contribute

To learn how to contribute to this system component you need to read the following document:

• CONTRIBUTING.md

Development

To learn how to do development with this system component inside the Redox build system you need to read the Build System and Coding and Building pages.