1 files changed, 79 insertions, 0 deletions

diff --git a/arch/mips/mips-boards/generic/printf.c b/arch/mips/mips-boards/generic/printf.c
new file mode 100644
index 000000000000..2c1ab1f19fdc
--- /dev/null
+++ b/arch/mips/mips-boards/generic/printf.c
@@ -0,0 +1,79 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * Putting things on the screen/serial line using YAMONs facilities.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/serial_reg.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_MIPS_ATLAS
+#include <asm/mips-boards/atlas.h>
+
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define PORT(offset) (ATLAS_UART_REGS_BASE     + ((offset)<<3))
+#else
+#define PORT(offset) (ATLAS_UART_REGS_BASE + 3 + ((offset)<<3))
+#endif
+
+#elif defined(CONFIG_MIPS_SEAD)
+
+#include <asm/mips-boards/sead.h>
+
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define PORT(offset) (SEAD_UART0_REGS_BASE     + ((offset)<<3))
+#else
+#define PORT(offset) (SEAD_UART0_REGS_BASE + 3 + ((offset)<<3))
+#endif
+
+#else
+
+#define PORT(offset) (0x3f8 + (offset))
+
+#endif
+
+static inline unsigned int serial_in(int offset)
+{
+        return inb(PORT(offset));
+}
+
+static inline void serial_out(int offset, int value)
+{
+        outb(value, PORT(offset));
+}
+
+int prom_putchar(char c)
+{
+        while ((serial_in(UART_LSR) & UART_LSR_THRE) == 0)
+                ;
+
+        serial_out(UART_TX, c);
+
+        return 1;
+}
+
+char prom_getchar(void)
+{
+        while (!(serial_in(UART_LSR) & UART_LSR_DR))
+                ;
+
+        return serial_in(UART_RX);
+}
+