1 files changed, 56 insertions, 0 deletions
diff --git a/arch/nios2/lib/early_printf.c b/arch/nios2/lib/early_printf.c
new file mode 100644
index 0000000000..637bb73b0d
--- /dev/null
+++ b/arch/nios2/lib/early_printf.c
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <stdio.h>
+#include <common.h>
+#include <asm/nios2-io.h>
+#include <asm/io.h>
+
+void early_putc(char ch)
+{
+	struct nios_uart *uart = (struct nios_uart *)NIOS_SOPC_UART_BASE;
+
+	while ((readl(&uart->status) & NIOS_UART_TRDY) == 0);
+	writel((unsigned char)ch, &uart->txdata);
+}
+
+void early_puts(const char *s)
+{
+	while (*s != 0)
+		early_putc(*s++);
+}
+
+int early_printf(const char *fmt, ...)
+{
+	va_list args;
+	uint i;
+	char printbuffer[50];
+
+	va_start(args, fmt);
+
+	i = vsprintf(printbuffer, fmt, args);
+	va_end(args);
+
+	early_puts(printbuffer);
+
+	return 0;
+}