This is a kernel that can read the characters a-z and 0-9 from the keyboard and print them on screen.
See the repo mkernel which is a minimal kernel that prints a string on the screen. mkeykernel just extends this to include keyboard support.
####Blog post####
Kernel 201 - Let’s write a Kernel with keyboard and screen support
(http://arjunsreedharan.org/post/99370248137/kernel-201-lets-write-a-kernel-with-keyboard-and)
####Build commands####
nasm -f elf32 kernel.asm -o kasm.o
gcc -m32 -c kernel.c -o kc.o
ld -m elf_i386 -T link.ld -o kernel kasm.o kc.o
If you get the following error message:
kc.o: In function `idt_init':
kernel.c:(.text+0x129): undefined reference to `__stack_chk_fail'
compile with the -fno-stack-protector option:
gcc -fno-stack-protector -m32 -c kernel.c -o bin/kc.o
####Test on emulator####
qemu-system-i386 -kernel kernel
####Get to boot####
GRUB requires your kernel executable to be of the pattern kernel-<version>.
So, rename the kernel:
mv kernel 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 of mkernel repo.
Reboot.
Voila !!
