[PATCH 13/54] Add arch/nios2/lib/early_printf.c

[franck.jullien at gmail.com]

From: Franck JULLIEN <franck.jullien at gmail.com>

Add arch/nios2/lib/early_printf.c

---
 arch/nios2/lib/early_printf.c |   60 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 60 insertions(+), 0 deletions(-)
 create mode 100644 arch/nios2/lib/early_printf.c

diff --git a/arch/nios2/lib/early_printf.c b/arch/nios2/lib/early_printf.c
new file mode 100644
index 0000000..3e717a5
--- /dev/null
+++ b/arch/nios2/lib/early_printf.c
@@ -0,0 +1,60 @@
+/*
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun at 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>
+
+void early_putc( char ch )
+{
+        static nios_uart_t *uart = (nios_uart_t *) NIOS_SOPC_UART_BASE;
+
+        while(!(uart->status & NIOS_UART_TRDY));
+        uart->txdata = ch;
+
+}
+
+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;
+}
+
-- 
1.7.3.4