amd64: barely boot into kernel code

1 files changed, 26 insertions, 0 deletions

diff --git a/src/kernel/arch/amd64/tty/tty.c b/src/kernel/arch/amd64/tty/tty.c
new file mode 100644
index 0000000..6593ef6
--- /dev/null
+++ b/src/kernel/arch/amd64/tty/tty.c
@@ -0,0 +1,26 @@
+#include <kernel/arch/generic.h>
+#include <kernel/arch/amd64/driver/serial.h>
+#include <kernel/arch/amd64/tty/tty.h>
+#include <shared/printf.h>
+
+void tty_init(void) {
+	vga_clear();
+	serial_preinit();
+
+	vga_write("\x03 ", 2); // cp437 heart
+	serial_write("<3 ", 3);
+}
+
+static void backend(void __attribute__((unused))  *arg, const char *buf, size_t len) {
+	vga_write(buf, len);
+	serial_write(buf, len);
+}
+
+int kprintf(const char *fmt, ...) {
+	int ret;
+	va_list argp;
+	va_start(argp, fmt);
+	ret = __printf_internal(fmt, argp, backend, NULL);
+	va_end(argp);
+	return ret;
+}