1 files changed, 76 insertions, 0 deletions

diff --git a/arch/mips/sgi-ip27/ip27-console.c b/arch/mips/sgi-ip27/ip27-console.c
new file mode 100644
index 000000000000..d97f5b5ef844
--- /dev/null
+++ b/arch/mips/sgi-ip27/ip27-console.c
@@ -0,0 +1,76 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001, 2002 Ralf Baechle
+ */
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/termios.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+
+#include <asm/page.h>
+#include <asm/semaphore.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/sn0/hub.h>
+#include <asm/sn/klconfig.h>
+#include <asm/sn/ioc3.h>
+#include <asm/sn/sn_private.h>
+
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+
+#define IOC3_CLK        (22000000 / 3)
+#define IOC3_FLAGS      (0)
+
+static inline struct ioc3_uartregs *console_uart(void)
+{
+        struct ioc3 *ioc3;
+
+        ioc3 = (struct ioc3 *)KL_CONFIG_CH_CONS_INFO(get_nasid())->memory_base;
+
+        return &ioc3->sregs.uarta;
+}
+
+void prom_putchar(char c)
+{
+        struct ioc3_uartregs *uart = console_uart();
+
+        while ((uart->iu_lsr & 0x20) == 0);
+        uart->iu_thr = c;
+}
+
+char __init prom_getchar(void)
+{
+        return 0;
+}
+
+static void inline ioc3_console_probe(void)
+{
+        struct uart_port up;
+
+        /*
+         * Register to interrupt zero because we share the interrupt with
+         * the serial driver which we don't properly support yet.
+         */
+        memset(&up, 0, sizeof(up));
+        up.membase      = (unsigned char *) console_uart();
+        up.irq          = 0;
+        up.uartclk      = IOC3_CLK;
+        up.regshift     = 0;
+        up.iotype       = UPIO_MEM;
+        up.flags        = IOC3_FLAGS;
+        up.line         = 0;
+
+        if (early_serial_setup(&up))
+                printk(KERN_ERR "Early serial init of port 0 failed\n");
+}
+
+__init void ip27_setup_console(void)
+{
+        ioc3_console_probe();
+}