A fork of arjun024/mkernel for MSYS2 MinGW 64-bit
This is a minimalist kernel which prints "my first kernel
" on the screen and then hangs.
- The kernel is multi-boot compliant and loads with GRUB.
Kernel 101 β Letβs write a Kernel
- Install MSYS2 x86_64
- Open MSYS2 MinGW 64-bit terminal
- Install dependencies (nasm, gcc, binutils, qemu):
pacman -S mingw-w64-x86_64-nasm mingw-w64-x86_64-gcc mingw-w64-x86_64-binutils mingw-w64-x86_64-qemu
(Note: You may or may not have to install other missing dependencies.
In addition to the ones listed above, I also have base-devel
and
mingw-w64-x86_64-toolchain
installed.)
nasm -f elf32 kernel.asm -o kasm.o
gcc -m32 -c kernel.c -o kc.o
ld -m i386pe -T link.ld -o kernel kasm.o kc.o
objcopy -O elf32-i386 kernel kernel.elf
(Note: The commands ld
and qemu-system-i386
slightly differ from
those of the original mkernel. The standard MinGW/64 LD linker doesn't
output ELF binaries. Because of
this, the objcopy
command is added to convert from PEI-I386 to ELF.)
qemu-system-i386 -kernel kernel.elf
GRUB requires your kernel executable to be of the pattern kernel-<version>
.
So, rename the kernel:
mv kernel.elf kernel-701
Copy it to your boot partition (assuming you are superuser):
cp kernel-701 /boot/kernel-701
Configure your grub/grub2 similar to what is given in _grub_grub2_config
folder.
Reboot.
Voila!
See mkeykernel repo