1 files changed, 106 insertions, 0 deletions
diff --git a/arch/mips/momentum/jaguar_atx/ja-console.c b/arch/mips/momentum/jaguar_atx/ja-console.c
new file mode 100644
index 00000000000..da6e1ed34db
--- /dev/null
+++ b/arch/mips/momentum/jaguar_atx/ja-console.c
@@ -0,0 +1,106 @@
+/*
+ * 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, 2004 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 <linux/serial.h>
+#include <linux/serial_core.h>
+#include <asm/serial.h>
+
+/* SUPERIO uart register map */
+struct ja_uartregs {
+	union {
+		volatile u8	pad0[3];
+		volatile u8	rbr;	/* read only, DLAB == 0 */
+		volatile u8	pad1[3];
+		volatile u8	thr;	/* write only, DLAB == 0 */
+		volatile u8	pad2[3];
+		volatile u8	dll;	/* DLAB == 1 */
+	} u1;
+	union {
+		volatile u8	pad0[3];
+		volatile u8	ier;	/* DLAB == 0 */
+		volatile u8	pad1[3];
+		volatile u8	dlm;	/* DLAB == 1 */
+	} u2;
+	union {
+		volatile u8	pad0[3];
+		volatile u8	iir;	/* read only */
+		volatile u8	pad1[3];
+		volatile u8	fcr;	/* write only */
+	} u3;
+	volatile u8	pad0[3];
+	volatile u8	iu_lcr;
+	volatile u8	pad1[3];
+	volatile u8	iu_mcr;
+	volatile u8	pad2[3];
+	volatile u8	iu_lsr;
+	volatile u8	pad3[3];
+	volatile u8	iu_msr;
+	volatile u8	pad4[3];
+	volatile u8	iu_scr;
+} ja_uregs_t;
+
+#define iu_rbr u1.rbr
+#define iu_thr u1.thr
+#define iu_dll u1.dll
+#define iu_ier u2.ier
+#define iu_dlm u2.dlm
+#define iu_iir u3.iir
+#define iu_fcr u3.fcr
+
+extern unsigned long uart_base;
+
+static inline struct ja_uartregs *console_uart(void)
+{
+	return (struct ja_uartregs *) (uart_base + 0x23UL);
+}
+
+void prom_putchar(char c)
+{
+	struct ja_uartregs *uart = console_uart();
+
+	while ((uart->iu_lsr & 0x20) == 0);
+	uart->iu_thr = c;
+}
+
+char __init prom_getchar(void)
+{
+	return 0;
+}
+
+static void inline ja_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 *) uart_base + 0x23UL;
+	up.irq		= JAGUAR_ATX_SERIAL1_IRQ;
+	up.uartclk	= JAGUAR_ATX_UART_CLK;
+	up.regshift	= 2;
+	up.iotype	= UPIO_MEM;
+	up.flags	= ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+	up.line		= 0;
+
+	if (early_serial_setup(&up))
+		printk(KERN_ERR "Early serial init of port 0 failed\n");
+}
+
+__init void ja_setup_console(void)
+{
+	ja_console_probe();
+}