From 5668d7cfc5bb05057c5368eceb2bbb8a6a45a8c3 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sat, 26 Oct 2019 16:37:33 +0200
Subject: Removed VGA driver support

---
 src/kernel/graphics/vga.c | 162 ----------------------------------------------
 1 file changed, 162 deletions(-)
 delete mode 100644 src/kernel/graphics/vga.c

(limited to 'src/kernel/graphics/vga.c')

diff --git a/src/kernel/graphics/vga.c b/src/kernel/graphics/vga.c
deleted file mode 100644
index a470af8..0000000
--- a/src/kernel/graphics/vga.c
+++ /dev/null
@@ -1,162 +0,0 @@
-#include <stddef.h>
-#include <stdint.h>
-#include "../io/io.h"
-#include "../lib/lib.h"
-#include "../commands/command.h"
-#include "../interrupts/interrupts.h"
-
-// Hardware text mode color constants
-enum vga_color {
-    VGA_COLOR_BLACK = 0,
-    VGA_COLOR_BLUE = 1,
-    VGA_COLOR_GREEN = 2,
-    VGA_COLOR_CYAN = 3,
-    VGA_COLOR_RED = 4,
-    VGA_COLOR_MAGENTA = 5,
-    VGA_COLOR_BROWN = 6,
-    VGA_COLOR_LIGHT_GREY = 7,
-    VGA_COLOR_DARK_GREY = 8,
-    VGA_COLOR_LIGHT_BLUE = 9,
-    VGA_COLOR_LIGHT_GREEN = 10,
-    VGA_COLOR_LIGHT_CYAN = 11,
-    VGA_COLOR_LIGHT_RED = 12,
-    VGA_COLOR_LIGHT_MAGENTA = 13,
-    VGA_COLOR_LIGHT_BROWN = 14,
-    VGA_COLOR_WHITE = 15,
-};
-
-inline uint8_t vga_entry_color(enum vga_color fg, enum vga_color bg) {
-    return fg | bg << 4;
-}
-
-inline uint16_t vga_entry(unsigned char uc, uint8_t color) {
-    return (uint16_t) uc | (uint16_t) color << 8;
-}
-
-static const size_t VGA_WIDTH = 80;
-static const size_t VGA_HEIGHT = 25;
-
-size_t terminal_row;
-size_t terminal_column;
-uint8_t terminal_color;
-uint16_t *terminal_buffer;
-
-char text[1024] = {0};
-
-void terminal_clear() {
-    terminal_row = 0;
-    terminal_column = 0;
-    for (size_t y = 0; y < VGA_HEIGHT; y++) {
-        for (size_t x = 0; x < VGA_WIDTH; x++) {
-            const size_t index = y * VGA_WIDTH + x;
-            terminal_buffer[index] = vga_entry(' ', terminal_color);
-        }
-    }
-}
-
-void terminal_enable_cursor(uint8_t cursor_start, uint8_t cursor_end) {
-    send_b(0x3D4, 0x0A);
-    send_b(0x3D5, (receive_b(0x3D5) & 0xC0) | cursor_start);
-    send_b(0x3D4, 0x0B);
-    send_b(0x3D5, (receive_b(0x3D5) & 0xE0) | cursor_end);
-}
-
-void terminal_update_cursor(void) {
-    unsigned temp = terminal_row * VGA_WIDTH + terminal_column;
-    send_b(0x3D4, 14);
-    send_b(0x3D5, temp >> 8);
-    send_b(0x3D4, 15);
-    send_b(0x3D5, temp);
-}
-
-void terminal_initialize(void) {
-    // terminal_enable_cursor(0, 15);
-    terminal_row = 0;
-    terminal_column = 0;
-    terminal_color = vga_entry_color(VGA_COLOR_LIGHT_GREY, VGA_COLOR_BLACK);
-    terminal_buffer = (uint16_t *) 0xB8000;
-    terminal_clear();
-}
-
-void terminal_scroll(void) {
-    if (terminal_row >= VGA_HEIGHT) {
-        terminal_row = VGA_HEIGHT - 1;
-        for (size_t x = 0; x < VGA_WIDTH; x++)
-            for (size_t y = 0; y < VGA_HEIGHT; y++) {
-                uint16_t c = terminal_buffer[y * VGA_WIDTH + x];
-                terminal_buffer[(y - 1) * VGA_WIDTH + x] = c;
-                terminal_buffer[y * VGA_WIDTH + x] = vga_entry(' ', terminal_color);
-            }
-    }
-}
-
-void terminal_set_color(uint8_t color) {
-    terminal_color = color;
-}
-
-void terminal_put_entry_at(char c, uint8_t color, size_t x, size_t y) {
-    // const size_t index = y * VGA_WIDTH + x;
-    // terminal_buffer[index] = vga_entry(c, color);
-}
-
-void terminal_put_char(char c) {
-    if (c == 0x08) {
-        if (terminal_column != 0) terminal_column--;
-    } else if (c == 0x09) {
-        terminal_column = (terminal_column + 8) & ~(8 - 1);
-    } else if (c == '\r') {
-        terminal_column = 0;
-    } else if (c == '\n') {
-        terminal_row++;
-        terminal_column = 0;
-        // terminal_scroll();
-    } else if (c >= ' ') { // Any printable character
-        // terminal_put_entry_at(c, terminal_color, terminal_column, terminal_row);
-        terminal_column++;
-    }
-
-    // Add new line on overflow
-    if (terminal_column >= VGA_WIDTH) {
-        terminal_column = 0;
-        terminal_row++;
-    }
-
-    // terminal_scroll();
-    // terminal_update_cursor();
-}
-
-void terminal_write(const char *data, size_t size) {
-    for (size_t i = 0; i < size; i++)
-        terminal_put_char(data[i]);
-}
-
-void terminal_put_keyboard_char(char c) {
-    terminal_put_char(c);
-    if (c == '\n' && irq_is_installed(1)) {
-        // exec_command(text);
-        // memory_set(text, 0, sizeof(text));
-        terminal_column = 0;
-        terminal_row++;
-        // terminal_scroll();
-        terminal_put_entry_at('$', terminal_color, terminal_column, terminal_row);
-        terminal_column = 2;
-        // terminal_update_cursor();
-    } else if (c >= ' ' && irq_is_installed(1)) strcat(text, &c);
-}
-
-void terminal_write_string(const char *data) {
-    // terminal_write(data, strlen(data));
-    serial_write(data);
-}
-
-void terminal_write_number(int data) {
-    serial_write_dec(data);
-    // terminal_write(converted, strlen(converted));
-}
-
-void terminal_write_line(const char *data) {
-    serial_write(data);
-    terminal_column = 0;
-    // terminal_write_string(data);
-    terminal_column = 0;
-}
-- 
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