ptos: drivers: Add bootvid driver stub

Signed-off-by: Chloe M. <chloe@yiffware.org>

service/ptos/drivers/bootvid/fbio.c

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description: Boot video driver
+ * Author:      Chloe M.
+ */
+
+#include <drivers/bootvid/fbio.h>
+#include <ex/trace.h>
+#include <ke/bpal.h>
+
+#define DTRACE(Fmt, ...) \
+    TRACE("[ BOOTVID ]: " Fmt, ##__VA_ARGS__)
+
+static BPAL_FRAMEBUFFER Framebuffer;
+
+VOID
+BootVidInit(VOID)
+{
+   BPAL_HANDLE Handle;
+
+   KeBpalGetHandle(&Handle);
+   Framebuffer = Handle.Framebuffer;
+
+   DTRACE("framebuffer width  : %d px\n", Framebuffer.Width);
+   DTRACE("framebuffer height : %d px\n", Framebuffer.Height);
+}

service/ptos/head/drivers/bootvid/fbio.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description: Boot video driver
+ * Author:      Chloe M.
+ */
+
+#ifndef _BOOTVID_FBIO_H_
+#define _BOOTVID_FBIO_H_ 1
+
+#include <ptdef.h>
+
+/*
+ * Initialize the boot video driver
+ */
+VOID BootVidInit(VOID);
+
+#endif  /* !_BOOTVID_FBIO_H_ */

service/ptos/ke/Makefile

@@ -12,6 +12,7 @@ include ../../mk/ptos.mk
 CFILES = $(shell find . -name "*.c")
 CFILES += $(shell find ../lib -name "*.c")
 CFILES += $(shell find ../xt -name "*.c")
+CFILES += $(shell find ../drivers -name "*.c")
 DFILES = $(CFILES:.c=.d)
 OFILES = $(CFILES:.c=.o)
 

service/ptos/ke/init.c

@@ -10,6 +10,7 @@
 #include <ke/bpal.h>
 #include <ex/trace.h>
 #include <hal/serial.h>
+#include <drivers/bootvid/fbio.h>
 #include <machine/pio.h>
 #include <string.h>
 
@@ -38,4 +39,7 @@ KiKernelInit(VOID)
 
     /* Display the copyright */
     Copyright();
+
+    /* Initialize the boot video driver */
+    BootVidInit();
 }