Initial code

thousand-line-os/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "thousand-line-os"
+version = "0.1.0"

thousand-line-os/Cargo.toml

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+[package]
+name = "thousand-line-os"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

thousand-line-os/README.md

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+# Thousand Line OS
+
+Aspirational. Following https://operating-system-in-1000-lines.vercel.app/en/

thousand-line-os/justfile

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+_default:
+    @just --list
+
+
+
+run:
+    #!/usr/bin/env bash
+    #
+    QEMU=qemu-system-riscv32
+    # Start QEMU
+    $QEMU -machine virt -bios default -nographic -serial mon:stdio --no-reboot

thousand-line-os/kernel.ld

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+ENTRY(boot)
+
+SECTIONS {
+    . = 0x80200000;
+
+    .text :{
+        KEEP(*(.text.boot));
+        *(.text .text.*);
+    }
+
+    .rodata : ALIGN(4) {
+        *(.rodata .rodata.*);
+    }
+
+    .data : ALIGN(4) {
+        *(.data .data.*);
+    }
+
+    .bss : ALIGN(4) {
+        __bss = .;
+        *(.bss .bss.* .sbss .sbss.*);
+        __bss_end = .;
+    }
+
+    . = ALIGN(4);
+    . += 128 * 1024; /* 128KB */
+    __stack_top = .;
+}

thousand-line-os/src/lib.rs

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+#![no_std]
+#![no_main]
+
+#[no_mangle]
+pub extern "C" fn _start() -> ! {
+  init()
+}
+
+fn init() -> ! {
+    loop {
+
+    }
+}
+