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OpenSoftware-WorldOpenSoftware-World
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OpenKernel 1.0 has been released (OpenKernel was developed with the help of ChatGPT, an AI model from OpenAI. It was designed in collaboration with OpenSoftware-World.)
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‎Boot/Mboot_desc/mboot.asm‎

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section .multiboot
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align 4
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multiboot_magic equ 0x1BADB002
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multiboot_flags equ 0x00000003
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multiboot_checksum equ -(multiboot_magic + multiboot_flags)
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dd multiboot_magic
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dd multiboot_flags
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dd multiboot_checksum

‎Boot/boot.asm‎

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bits 32
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%include "Boot/Mboot_desc/mboot.asm"
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global _start
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extern kernel_main
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section .text
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_start:
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cmp eax, 0x2BADB002
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jne hang
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cli
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mov esp, 0x9FC00
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call kernel_main
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hang:
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hlt
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jmp hang

‎Drivers/Keyboard/keyboard.c‎

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#include "keyboard.h"
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#include "../../SystemLib/SystemIO/io.h"
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#define KBD_DATA 0x60
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#define KBD_STAT 0x64
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static char kmap[128] = {
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0, 27, '1','2','3','4','5','6','7','8','9','0','-','=', '\b',
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'\t','q','w','e','r','t','y','u','i','o','p','[',']','\n',
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0, 'a','s','d','f','g','h','j','k','l',';','\'','`',
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0,'\\','z','x','c','v','b','n','m',',','.','/',0,
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'*',0,' ',0
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};
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static char kbf[KEY_BF_SIZE];
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static uint8_t buf_head = 0;
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static uint8_t buf_tail = 0;
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void kbd_init() {
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buf_head = 0;
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buf_tail = 0;
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}
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uint8_t kb_check() {
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return buf_head != buf_tail;
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}
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char get_char() {
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uint8_t scancode;
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while (1) {
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while (!(inb(KBD_STAT) & 1));
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scancode = inb(KBD_DATA);
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if (scancode & 0x80)
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continue;
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if (scancode < 128)
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return kmap[scancode];
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}
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}
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void kbd_hndlr() {
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uint8_t status = inb(KBD_STAT);
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if (status & 0x01) {
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uint8_t scancode = inb(KBD_DATA);
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char c = 0;
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if (scancode < 128) c = kmap[scancode];
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if (c) {
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kbf[buf_head] = c;
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buf_head = (buf_head + 1) % KEY_BF_SIZE;
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}
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}
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}

‎Drivers/Keyboard/keyboard.h‎

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#ifndef KEYBOARD_H
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#define KEYBOARD_H
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#include "../../SystemLib/Std/types.h"
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#define KEY_BF_SIZE 256
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void kbd_init();
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char get_char();
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uint8_t kb_check();
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void kbd_hndlr();
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#define DRIVER_NAME "OpenKernel Keyboard Driver"
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#define DRIVER_VER "0.1"
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#define DRIVER_DESC "A simple Keyboard driver for OpenKernel"
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#define DRIVER_KRNL_VER "1.0"
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#endif

‎Drivers/Vga/vga.c‎

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#include "vga.h"
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#include "../../SystemLib/SystemIO/io.h"
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static uint16_t *vgabuffer = (uint16_t *)VBUFFER;
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static uint8_t txt_color = VGA_COLOR(VGA_COLOR_BLACK, VGA_COLOR_LIGHT_GREY);
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static uint8_t cx = 0;
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static uint8_t cy = 0;
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void vga_screen_clear() {
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for (uint16_t y=0; y < VHEIGHT; y++) {
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for (uint16_t x=0; x < VWIDTH; x++) {
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vgabuffer[y * VWIDTH + x] = VGA_ENTRY(' ', txt_color);
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}
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}
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cx = 0;
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cy = 0;
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}
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void vga_set_bg_color(uint8_t color) {
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uint8_t fg = txt_color & 0x0F;
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txt_color = VGA_COLOR(color, fg);
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vga_screen_clear();
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}
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void vga_set_text_color(uint8_t color) {
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uint8_t bg = (txt_color >> 4) & 0x0F;
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txt_color = VGA_COLOR(bg, color);
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}
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void vga_set_color_scheme(uint8_t bg_color, uint8_t text_color) {
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vga_set_bg_color(bg_color);
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vga_set_text_color(text_color);
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}
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void ptchar(char c) {
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if (c == '\n') {
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cx = 0;
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cy++;
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} else {
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vgabuffer[cy * VWIDTH + cx] = VGA_ENTRY(c, txt_color);
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cx++;
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if (cx >= VWIDTH) {
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cx = 0;
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cy++;
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}
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}
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if (cy >= VHEIGHT) {
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vga_screen_clear();
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}
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vga_set_cursor(cx, cy);
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}
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void vga_print_scr(const char *str) {
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while (*str) {
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ptchar(*str++);
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}
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}
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void vga_print_scr_nw(const char *str) {
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vga_print_scr(str);
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vga_newline();
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}
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void vga_newline() {
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cx = 0;
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cy++;
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if (cy >= VHEIGHT) {
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vga_screen_clear();
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}
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vga_set_cursor(cx, cy);
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}
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void vga_init() {
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vga_screen_clear();
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}
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void vga_set_cursor(uint8_t x, uint8_t y) {
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uint16_t pos = y * 80 + x;
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outb(0x3D4, 0x0F);
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outb(0x3D5, (uint8_t)(pos & 0xFF));
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outb(0x3D4, 0x0E);
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outb(0x3D5, (uint8_t)((pos >> 8) & 0xFF));
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}
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void vga_bckspc() {
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if (cx == 0 && cy == 0) return;
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if (cx > 0) {
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cx--;
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} else {
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cy--;
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cx = VWIDTH - 1;
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}
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uint16_t *video = (uint16_t*)VBUFFER;
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video[cy * VWIDTH + cx] = VGA_ENTRY(' ', txt_color);
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vga_set_cursor(cx, cy);
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}

‎Drivers/Vga/vga.h‎

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#ifndef VGA_H
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#define VGA_H
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#include "../../SystemLib/Std/types.h"
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#define VWIDTH 80
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#define VHEIGHT 25
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#define VBUFFER 0xB8000
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void vga_init();
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void vga_screen_clear();
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void vga_set_bg_color(uint8_t color);
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void vga_set_text_color(uint8_t color);
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void vga_print_scr(const char *str);
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void vga_newline();
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void vga_bckspc();
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void vga_set_cursor(uint8_t x, uint8_t y);
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void ptchar(char c);
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void vga_print_scr_nw(const char *str);
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void vga_set_color_scheme(uint8_t bg_color, uint8_t text_color);
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#define VGA_COLOR_BLACK 0x0
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#define VGA_COLOR_BLUE 0x1
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#define VGA_COLOR_GREEN 0x2
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#define VGA_COLOR_CYAN 0x3
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#define VGA_COLOR_RED 0x4
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#define VGA_COLOR_MAGENTA 0x5
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#define VGA_COLOR_BROWN 0x6
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#define VGA_COLOR_LIGHT_GREY 0x7
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#define VGA_COLOR_DARK_GREY 0x8
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#define VGA_COLOR_LIGHT_BLUE 0x9
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#define VGA_COLOR_LIGHT_GREEN 0xA
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#define VGA_COLOR_LIGHT_CYAN 0xB
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#define VGA_COLOR_LIGHT_RED 0xC
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#define VGA_COLOR_LIGHT_MAGENTA 0xD
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#define VGA_COLOR_LIGHT_BROWN 0xE
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#define VGA_COLOR_WHITE 0xF
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#define VGA_COLOR(bg, fg) ((bg << 4) | (fg))
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#define VGA_ENTRY(ch, color) ((uint16_t)ch | (color << 8))
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#define DRIVER_NAME "OpenKernel VGA Driver"
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#define DRIVER_VER "0.1"
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#define DRIVER_DESC "A simple VGA text mode driver for OpenKernel"
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#define DRIVER_KRNL_VER "1.0"
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#endif

‎Kernel/KernelServices/Shell/command_ls.h‎

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#ifndef COMMAND_LS_H
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#define COMMAND_LS_H
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#define CLEAR_STRING "clear"
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#define CLS_STRING "cls"
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#define LIST_STRING "list"
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#define SEQLIST_STRING "seqlist"
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#define VER_STRING "ver"
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#define SHELLINFO_STRING "shellinfo"
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#define OSFETCH_STRING "osfetch"
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#define SHUTDOWN_STRING "shutdown"
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#define REBOOT_STRING "reboot"
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#define TIME_STRING "time"
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#define VERSION_STRING "version"
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#define ECHO_STRING "echo "
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#endif

‎Kernel/KernelServices/Shell/shell.c‎

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#include "shell.h"
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#include "command_ls.h"
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#include "../../../Drivers/Vga/vga.h"
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#include "../../../SystemLib/SysCalls/basic_syscall.h"
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#include "../../../SystemLib/TimeMng/time.h"
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#include "../../../SystemLib/SystemIO/io.h"
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#include "../../../Drivers/Keyboard/keyboard.h"
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#include "../../../SystemLib/Std/std.h"
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#include "../SystemManagement/sysmng.h"
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void shell_inp() {
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vga_set_text_color(VGA_COLOR_GREEN);
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vga_print_scr("root");
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vga_set_text_color(VGA_COLOR_WHITE);
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vga_print_scr("@");
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vga_set_text_color(VGA_COLOR_CYAN);
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vga_print_scr("shell");
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vga_set_text_color(VGA_COLOR_WHITE);
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vga_print_scr("> ");
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}
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void shell_init() {
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char cmd[MAX_CMD_LEN];
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uint8_t idx = 0;
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shell_inp();
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while (1) {
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char c = get_char();
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if (c == '\b') {
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if (idx > 0) {
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idx--;
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vga_bckspc();
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}
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} else if (c == '\n') {
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vga_newline();
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cmd[idx] = 0;
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idx = 0;
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if (strcmp(cmd, "list") == 0) {
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vga_print_scr("Commands: clear, cls, list, seqlist, ver, shellinfo, osfetch, shutdown, reboot, time, version, echo\n");
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} else if (strcmp(cmd, SEQLIST_STRING) == 0) {
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vga_print_scr_nw("Commands:");
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vga_print_scr_nw("clear");
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vga_print_scr_nw("cls");
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vga_print_scr_nw("list");
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vga_print_scr_nw("seqlist");
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vga_print_scr_nw("ver");
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vga_print_scr_nw("shellinfo");
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vga_print_scr_nw("osfetch");
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vga_print_scr_nw("shutdown");
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vga_print_scr_nw("reboot");
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vga_print_scr_nw("time");
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vga_print_scr_nw("version");
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vga_print_scr_nw("echo");
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} else if (strcmp(cmd, OSFETCH_STRING) == 0) {
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vga_print_scr_nw(" ____ _____ root@shell");
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vga_print_scr_nw(" / __ \\ / ___/ ----------");
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vga_print_scr_nw("| | | | \\__ \\ OS: OpenKernel 1.0");
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vga_print_scr_nw("| | | |___/ / Kernel: OpenKernel 1.0");
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vga_print_scr_nw("| | | |___/ / Bootloader Name: GNU GRUB Bootloader");
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vga_print_scr_nw("| | | ___/ / Bootloader version: 2.12");
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vga_print_scr_nw(" \\____/|_____/ Architecture: x86 (32-bit)");
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vga_print_scr_nw(" Shell: OpenKernel Shell 1.0");
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} else if (strcmp(cmd, CLEAR_STRING) == 0 || strcmp(cmd, CLS_STRING) == 0) {
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vga_screen_clear();
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} else if (strcmp(cmd, TIME_STRING) == 0) {
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print_time();
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} else if (strncmp(cmd, ECHO_STRING, 5) == 0) {
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vga_print_scr(cmd + 5);
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vga_newline();
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} else if (strcmp(cmd, SHELLINFO_STRING) == 0) {
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vga_print_scr_nw("OpenKernel Shell 1.0");
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} else if (strcmp(cmd, SHUTDOWN_STRING) == 0) {
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sys_next_status("S");
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} else if (strcmp(cmd, REBOOT_STRING) == 0) {
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sys_next_status("R");
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} else if (strcmp(cmd, VERSION_STRING) == 0 || strcmp(cmd, VER_STRING) == 0) {
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vga_print_scr("OpenKernel v1.0");
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vga_newline();
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} else {
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vga_print_scr("The command you entered could not be found. Please type list for a list of all commands.");
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vga_newline();
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}
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shell_inp();
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} else {
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if (idx < MAX_CMD_LEN - 1) {
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cmd[idx++] = c;
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ptchar(c);
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}
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}
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}
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}

‎Kernel/KernelServices/Shell/shell.h‎

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#ifndef SHELL_H
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#define SHELL_H
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#include "../../../SystemLib/Std/types.h"
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void shell_init();
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#define MAX_CMD_LEN 64
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#endif

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