MiniOS Kernel (ARMv7)

This is a minimal bare-metal ARM kernel project built for educational and prototyping purposes.
It includes multitasking, a UART shell, a simple task scheduler, and IRQ handling.
Tested and compatible with Windows 10 using arm-none-eabi-gcc and QEMU.

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Features

• ARMv7 Bootloader (boot.s, boot.ld)
• UART driver (uart.c, uart.h)
• Task manager with real context switching (task.c, switch.s)
• Round-robin scheduler triggered by timer IRQ (irq.s)
• Interactive shell via UART (shell.c)
  • Supported commands:
    • ps – list tasks
    • echo – simple message
    • halt – stop execution

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Requirements

• Windows 10
• Git Bash
• GCC ARM Embedded Toolchain
• QEMU for Windows 64-bit

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How to Build and Run

make
qemu-system-arm -M versatilepb -m 128M -nographic -kernel kernel.bin

Once running, you'll see:

MiniOS Kernel Booted
MiniOS Shell>

Type one of the supported commands (ps, echo, halt).

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Next Steps (Optional)

• Virtual File System (VFS)
• ls, cat, cd shell commands
• ELF binary loader
• FAT32 filesystem support
• Advanced multitasking with priorities

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Author

Built by Georgiana using ARM bare-metal architecture.
Powered by QEMU and the GNU ARM Toolchain.