Initial commit: SUB-OS 64-Bit Production Monolithic Operating System with LazyBox userland suite

include/drivers/vga.h

@@ -0,0 +1,48 @@
+#ifndef _DRIVERS_VGA_H
+#define _DRIVERS_VGA_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+#define VGA_WIDTH  80
+#define VGA_HEIGHT 25
+#define VGA_MEMORY 0xB8000
+
+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,
+};
+
+static inline uint8_t vga_entry_color(enum vga_color fg, enum vga_color bg) {
+    return fg | (bg << 4);
+}
+
+static inline uint16_t vga_entry(unsigned char uc, uint8_t color) {
+    return (uint16_t)uc | ((uint16_t)color << 8);
+}
+
+void vga_init(void);
+void vga_clear(void);
+void vga_putc(char c);
+void vga_write(const char* str);
+void vga_set_color(enum vga_color fg, enum vga_color bg);
+void vga_set_cursor(int row, int col);
+void vga_get_cursor(int* row, int* col);
+void vga_enable_cursor(uint8_t cursor_start, uint8_t cursor_end);
+void vga_disable_cursor(void);
+
+#endif // _DRIVERS_VGA_H