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https://github.com/arjun024/mkeykernel
A kernel that can read from keyboard and print on-screen
https://github.com/arjun024/mkeykernel
Last synced: about 8 hours ago
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A kernel that can read from keyboard and print on-screen
- Host: GitHub
- URL: https://github.com/arjun024/mkeykernel
- Owner: arjun024
- License: gpl-2.0
- Created: 2014-10-07T08:27:20.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2022-11-14T18:42:14.000Z (about 2 years ago)
- Last Synced: 2025-01-18T13:12:57.265Z (7 days ago)
- Language: C
- Homepage: https://arjunsreedharan.org/post/99370248137/kernels-201-lets-write-a-kernel-with-keyboard
- Size: 20.5 KB
- Stars: 659
- Watchers: 30
- Forks: 91
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- starred-awesome - mkeykernel - A kernel that can read from keyboard and print on-screen (C)
README
mkeykernel
=======
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](http://github.com/arjun024/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-`.
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](http://github.com/arjun024/mkernel).
Reboot.
Voila!
