console vga stuff

kernel/drivers/console/console.c

@@ -0,0 +1,49 @@
+#include <drivers/console/console.h>
+
+#include <lib/font.h>
+#include <drivers/vga/vga.h>
+
+static psf_font_t* font;
+
+static uint32_t console_row;
+static uint32_t console_col;
+static uint32_t console_text_color;
+static uint32_t console_backgrnd_color;
+
+static void write_vga_char(int row, int col, char c) {
+    uint32_t vga_pitch = vga_get_pitch();
+    uint8_t* glyph = (uint8_t*)font->glyphs + (c * font->hdr->charsz);
+
+    for (uint32_t y = 0; y < font->hdr->charsz; y++) {
+        uint8_t bits = glyph[y];
+        uint32_t* row = (uint32_t*)((uintptr_t)VGA_FRAMEBUFFER + ((console_row + y) * vga_pitch));
+        for (int x = 0; x < 8; x++) {
+            if (bits & (0b10000000 >> x)) {
+                row[console_col + x] = console_text_color;
+            }
+        }
+    }
+}
+
+void set_console_font(const char* path) {
+    font = load_font(path);
+}
+
+void set_console_fg(uint32_t color) {
+    console_text_color = color;
+}
+
+void set_console_bg(uint32_t color) {
+    console_backgrnd_color = color;
+}
+
+void console_init() {
+    console_row = 0;
+    console_col = 0;
+    set_console_fg(0xFFFFFFFF);
+    set_console_bg(0x00000000);
+}
+
+void console_putchar(char c) {
+    
+}