new (working) vga driver

2 files changed, 22 insertions, 0 deletions

diff --git a/OBJ b/OBJ
index e4f9335..06a3d33 100644
--- a/OBJ
+++ b/OBJ
@@ -2,6 +2,7 @@ boot/head.o
 drivers/pcspkr.o
 drivers/ps2.o
 drivers/tty.o
+drivers/vga.o
 kernel/gdt-as.o
 kernel/gdt.o
 kernel/idt-as.o
@@ -11,6 +12,7 @@ kernel/irq-as.o
 kernel/irq.o
 kernel/isr-as.o
 kernel/isr.o
+kernel/log.o
 kernel/main.o
 kernel/panic.o
 kernel/timer.o
diff --git a/drivers/vga.c b/drivers/vga.c
new file mode 100644
index 0000000..cfcd287
--- /dev/null
+++ b/drivers/vga.c
@@ -0,0 +1,20 @@
+#include <stddef.h>
+#include <stdlib.h>
+#include "multiboot.h"
+#include "vga.h"
+
+static uint8_t *framebuffer = NULL;
+static uint16_t fb_width;
+static uint16_t fb_height;
+
+void vga_drawpixel(int x, int y, uint32_t pixel)
+{
+    ((uint32_t*)framebuffer)[y * fb_width + x] = pixel;
+}
+
+void vga_init(struct vbe_info_t *vbe_mode_info)
+{
+    framebuffer = vbe_mode_info->physbase;
+    fb_width = vbe_mode_info->Xres;
+    fb_height = vbe_mode_info->Yres;
+}