Added static binary kernel loading

1 files changed, 32 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 88bcde0..21ad290 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,37 @@
+unsigned char inb(unsigned short port)
+{
+	unsigned char value;
+	__asm__ volatile("inb %1, %0" : "=a"(value) : "Nd"(port));
+	return value;
+}
+
+void outb(unsigned short port, unsigned char data)
+{
+	__asm__ volatile("outb %0, %1" ::"a"(data), "Nd"(port));
+}
+
+int is_transmit_empty()
+{
+	return inb(0x3f8 + 5) & 0x20;
+}
+
+void serial_put(char ch)
+{
+	while (is_transmit_empty() == 0)
+		;
+	outb(0x3f8, (unsigned char)ch);
+}
+
 int main(int argc, char *argv[])
 {
+	outb(0x3f8 + 1, 0x00);
+	outb(0x3f8 + 3, 0x80);
+	outb(0x3f8 + 0, 0x03);
+	outb(0x3f8 + 1, 0x00);
+	outb(0x3f8 + 3, 0x03);
+	outb(0x3f8 + 2, 0xC7);
+	outb(0x3f8 + 4, 0x0B);
+	serial_put('a');
 	while (1) {
 	};
 	return 0;