Initial commit

kernel/Makefile.inc

@@ -0,0 +1,3 @@
+KERNEL_PREFIX = kernel
+
+KOBJS += $(KERNEL_PREFIX)/hello.o

kernel/hello.c

@@ -0,0 +1,23 @@
+#define SERIAL_BASE 0x16000000
+#define SERIAL_FLAG_REGISTER 0x18
+#define SERIAL_BUFFER_FULL (1 << 5)
+ 
+void putc (char c)
+{
+    /* Wait until the serial buffer is empty */
+    while (*(volatile unsigned long*)(SERIAL_BASE + SERIAL_FLAG_REGISTER) 
+                                       & (SERIAL_BUFFER_FULL));
+    /* Put our character, c, into the serial buffer */
+    *(volatile unsigned long*)SERIAL_BASE = c;
+}
+ 
+void puts (const char * str)
+{
+    while (*str) putc (*str++);
+}
+ 
+int main (void)
+{
+    puts ("hello, world!\n");
+    return 0;
+}