From 9be402f069cc259ad5795b77567d66c4e7f6bef6 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 18 Jul 2010 14:59:24 +0200
Subject: [PATCH 4/6] MIPS: BCM47xx: Setup and register serial early

Swap the first and second serial if console=ttyS1 was set.
Set it up and register it for early serial support.

This patch has been in OpenWRT for a long time.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 arch/mips/bcm47xx/setup.c |   39 ++++++++++++++++++++++++++++++++++++++-
 1 files changed, 38 insertions(+), 1 deletions(-)

--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -28,6 +28,8 @@
 #include <linux/types.h>
 #include <linux/ssb/ssb.h>
 #include <linux/ssb/ssb_embedded.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
 #include <asm/bootinfo.h>
 #include <asm/reboot.h>
 #include <asm/time.h>
@@ -166,6 +168,31 @@ static int bcm47xx_get_invariants(struct
 	return 0;
 }
 
+#ifdef CONFIG_SERIAL_8250
+static void __init bcm47xx_early_serial_setup(struct ssb_mipscore *mcore)
+{
+	int i;
+
+	for (i = 0; i < mcore->nr_serial_ports; i++) {
+		struct ssb_serial_port *port = &(mcore->serial_ports[i]);
+		struct uart_port s;
+
+		memset(&s, 0, sizeof(s));
+		s.line = i;
+		s.mapbase = (unsigned int) port->regs;
+		s.membase = port->regs;
+		s.irq = port->irq + 2;
+		s.uartclk = port->baud_base;
+		s.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+		s.iotype = SERIAL_IO_MEM;
+		s.regshift = port->reg_shift;
+
+		early_serial_setup(&s);
+	}
+	printk(KERN_DEBUG "Serial init done.\n");
+}
+#endif
+
 void __init plat_mem_setup(void)
 {
 	int err;
@@ -191,6 +218,10 @@ void __init plat_mem_setup(void)
 		}
 	}
 
+#ifdef CONFIG_SERIAL_8250
+	bcm47xx_early_serial_setup(mcore);
+#endif
+
 	_machine_restart = bcm47xx_machine_restart;
 	_machine_halt = bcm47xx_machine_halt;
 	pm_power_off = bcm47xx_machine_halt;
