cleans up moonlight dir

port/moonlight/src/board.c

@@ -0,0 +1,39 @@
+#include "hwtimer.h"
+#include "csr.h"
+#include "platform.h"
+#include "uart.h"
+#include <stdio.h>
+#include <stdarg.h>
+
+// needed by picolibc/port.c
+int uart_putc(int ch) {
+    int intr_enable = riscv_mintr_get();
+    riscv_mintr_off();
+    uart_write(uart, ch);
+    riscv_mintr_restore(intr_enable);
+    return 1;
+}
+
+int uart_getc(void) {
+    int intr_enable = riscv_mintr_get();
+    riscv_mintr_off();
+    int ch = uart_read(uart);
+    riscv_mintr_restore(intr_enable);
+    return ch;
+}
+
+int uart_init(void) {
+    puts("[UART0] : Uart Init Done, this is Test output!");
+    return 0;
+};
+
+int board_init(void) {
+    int ret;
+    ret = uart_init();
+    if(ret)
+        return ret;
+    ret = hwtimer_init();
+    if(ret)
+        return ret;
+    return 0;
+}