This is a graphic mode kernel written in go, based on the Bare Metal Gophers repository.
The detailed description of the code is written in this Medium blog.
The kernel currently looks like this (you can't move the mouse yet.):
Some of our future work include
- fixing the weird vertical line next to the mouse and Pikachu
- adding interrupts so that the kernel can receive signals from the keyboard and mouse
- we currently can only print out byte arrays, which means that printing numbers on the screen won't work. We need to prepare a function to convert numbers to byte arrays
Merge requests are welcome!
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Below is basically the same readme as the original repository.
The project Makefile contains targets for building a bootable ISO containing
the compiled code. Virtualbox or qemu
can be used to boot the generated ISO (make run-qemu or make run-vbox). A
debugging target is also provided (make gdb) that boots the ISO using qemu
and then spawns an interactive gdb session.
The code was developed using Go 1.8. However, you should be able to compile it with any Go version that supports native cross-compilation.
To compile the demo code when running on Linux you need a fairly recent version of:
- xorriso
- grub
- nasm
- gcc (for GNU ld)
- go (1.6+; recommended: 1.8)
- gdb (optional; only install if you want to debug the demo code)
The above dependencies can be installed using the appropriate package manager for each particular Linux distribution.
To properly link the kernel object files so that the bootloader can pick up the multi-boot signature we need to be able to control the linker configuration. For the time being this is only possible when using GNU ld (lld is a potential alternative but doesn't yet fully support linker scripts).
You can still build the kernel using vagrant. For
this purpose, a Vagrantfile is provided so all you need to do is just install
vagrant on your machine and run vagrant up before running any of the following
make commands.
To debug the demo code, you need to install gdb. If using
brew you can do this by running brew install gdb --with-all-targets. This is an optional step and is not required for running
the demo code.
The provided Makefile will work on both Linux and OSX (using vagrant) targets. When running under OSX, the Makefile will ensure that all build-related commands actually run inside the vagrant box. The following targets are supported:
run-vbox: compile the code, build an ISO file and run it using virtualbox.run-qemu: compile the code, build an ISO file and run it using qemu.gdb: compile the code, build an ISO file, run it using qemu and start a gdb session.iso: compile the code and build a bootable ISO using grub as the bootloader.kernel: compile the code into an elf binary.