/SanderOSUSB

32 bit singletasking C kernel

Primary LanguageAssembly

SanderOSUSB

Thank you for showing interest in SanderOSUSB! SanderOSUSB is a 32bit single tasking monolythic kernel that is supposed to run from USB or cd-rom.

Compiling

For compiling you need the following programs:

  • gcc
  • nasm or fasm
  • xorriso (grub)

sudo apt install gcc nasm xorriso

And then run the file /kernel/build.sh [ARGS] to generate kernel file Where:

  • empty : only generates a kernel.bin file
  • --grub : generates a grub-iso image
  • --pxe : generates a pxe image

Runing the OS

  • install qemu

sudo apt install qemu qemu-utils qemu-kvm

  • go to the repo directory
  • run:

qemu-system-x86_64 -cdrom ./cdrom.iso

Suported Devices

Currently the following devices are supported:

  • ❓ unknown
  • ❌ not supported
  • ✅ works
  • 🐛 partly working
Devicename VirtualBox Qemu Bochs Real hardware
IDE - ATA
IDE - ATAPI
AHCI - ATA 🐛
AHCI - ATAPI
PS/2 keyboard
PS/2 mouse
PIC
PCI
ACPI
USB - HID - Keyboard
USB - Mass Storage Device
EHCI (USB2.0) - Basic support
XHCI (USB3.0) - Basic support 🐛
RTL8169
E1000
Soundblaster 16

The following devices are on the list to get implemented:

The following filesystems are supported:

Filesystemname Read Write
ISO 9660
MBR
EFI-MBR
EXT2 (very basic)
FAT 12,16,32
SFS
TFTP

the following executable formats are supported:

  • 32-ELF (relocation and executable type)
  • raw binary at 0x2000
  • BASfile (with basic.bin)

the following executable formats are on the list to get implemented:

  • 32-MZPE
  • 32-MZCOFF
  • Marble

the following bootmethods are supported:

  • GRUB2
  • PXE
  • qemu --kernel loader

Directories

  • boot: Grub bin folder
  • kernel: Kernel source code
  • lib: kernel static library to which programs attach to
  • programs: example programs

Instalation on CDROM

  • build system with ./build.sh --grub
  • burn cdrom.iso to a cdrom

Instalation on USB

  • make a usbstick with EXT as filesystem
  • run sudo grub-install --target=i386-pc --root-directory=[mountpoint_filesystem] /dev/sdb
  • copy grub command file sudo cp ../boot/grub/grub.cfg [mountpoint_filesystem]/boot/grub/grub.cfg
  • copy kernel sudo cp ../kernel.bin /media/sander/SOS/kernel.bin