diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index cba171a..624c31c 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -155,7 +155,6 @@
 	bool "MIPS Malta board"
 	select ARCH_MAY_HAVE_PC_FDC
 	select BOOT_ELF32
-	select HAVE_STD_PC_SERIAL_PORT
 	select DMA_NONCOHERENT
 	select GENERIC_ISA_DMA
 	select IRQ_CPU
diff --git a/arch/mips/ddb5xxx/ddb5477/Makefile b/arch/mips/ddb5xxx/ddb5477/Makefile
index 23fd3b8..4864b8a 100644
--- a/arch/mips/ddb5xxx/ddb5477/Makefile
+++ b/arch/mips/ddb5xxx/ddb5477/Makefile
@@ -2,7 +2,8 @@
 # Makefile for NEC DDB-Vrc5477 board
 #
 
-obj-y	 		+= irq.o irq_5477.o setup.o lcd44780.o
+obj-y	 		+= ddb5477-platform.o irq.o irq_5477.o setup.o \
+			   lcd44780.o
 
 obj-$(CONFIG_RUNTIME_DEBUG) 	+= debug.o
 obj-$(CONFIG_KGDB)		+= kgdb_io.o
diff --git a/arch/mips/ddb5xxx/ddb5477/ddb5477-platform.c b/arch/mips/ddb5xxx/ddb5477/ddb5477-platform.c
new file mode 100644
index 0000000..c16020a
--- /dev/null
+++ b/arch/mips/ddb5xxx/ddb5477/ddb5477-platform.c
@@ -0,0 +1,49 @@
+/*
+ * 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) 2007 Ralf Baechle (ralf@linux-mips.org)
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/serial_8250.h>
+
+#include <asm/ddb5xxx/ddb5477.h>
+
+#define DDB_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
+
+#define DDB5477_PORT(base, int)						\
+{									\
+	.mapbase	= base,						\
+	.irq		= int,						\
+	.uartclk	= 1843200,					\
+	.iotype		= UPIO_MEM,					\
+	.flags		= DDB_UART_FLAGS,				\
+	.regshift	= 3,						\
+}
+
+static struct plat_serial8250_port uart8250_data[] = {
+	DDB5477_PORT(0xbfa04200, VRC5477_IRQ_UART0),
+	DDB5477_PORT(0xbfa04240, VRC5477_IRQ_UART1),
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for the NEC DDB5477");
diff --git a/arch/mips/gt64120/momenco_ocelot/Makefile b/arch/mips/gt64120/momenco_ocelot/Makefile
index 9f9a33f..1df5fe2 100644
--- a/arch/mips/gt64120/momenco_ocelot/Makefile
+++ b/arch/mips/gt64120/momenco_ocelot/Makefile
@@ -2,6 +2,6 @@
 # Makefile for Momentum's Ocelot board.
 #
 
-obj-y	 		+= irq.o prom.o reset.o setup.o
+obj-y	 		+= irq.o ocelot-platform.o prom.o reset.o setup.o
 
 obj-$(CONFIG_KGDB)	+= dbg_io.o
diff --git a/arch/mips/gt64120/momenco_ocelot/ocelot-platform.c b/arch/mips/gt64120/momenco_ocelot/ocelot-platform.c
new file mode 100644
index 0000000..81d9031
--- /dev/null
+++ b/arch/mips/gt64120/momenco_ocelot/ocelot-platform.c
@@ -0,0 +1,46 @@
+/*
+ * 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) 2007 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * A NS16552 DUART with a 20MHz crystal.
+ *
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+
+#define OCELOT_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
+
+static struct plat_serial8250_port uart8250_data[] = {
+	{
+		.mapbase	= 0xe0001020,
+		.irq		= 4,
+		.uartclk	= 20000000,
+		.iotype		= UPIO_MEM,
+		.flags		= OCELOT_UART_FLAGS,
+		.regshift	= 2,
+	},
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for the Momenco Ocelot");
diff --git a/arch/mips/jazz/Makefile b/arch/mips/jazz/Makefile
index dd9d99b..ae4c402 100644
--- a/arch/mips/jazz/Makefile
+++ b/arch/mips/jazz/Makefile
@@ -2,4 +2,4 @@
 # Makefile for the Jazz family specific parts of the kernel
 #
 
-obj-y	 	:= irq.o jazzdma.o reset.o setup.o
+obj-y	 	:= irq.o jazzdma.o jazz-platform.o reset.o setup.o
diff --git a/arch/mips/jazz/jazz-platform.c b/arch/mips/jazz/jazz-platform.c
new file mode 100644
index 0000000..fd73670
--- /dev/null
+++ b/arch/mips/jazz/jazz-platform.c
@@ -0,0 +1,60 @@
+/*
+ * 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) 2007 Ralf Baechle (ralf@linux-mips.org)
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/serial_8250.h>
+
+#include <asm/jazz.h>
+
+/*
+ * Confusion ...  It seems the original Microsoft Jazz machine used to have a
+ * 4.096MHz clock for its UART while the MIPS Magnum and Millenium systems
+ * had 8MHz.  The Olivetti M700-10 and the Acer PICA have 1.8432MHz like PCs.
+ */
+#ifdef CONFIG_OLIVETTI_M700
+#define JAZZ_BASE_BAUD 1843200
+#else
+#define JAZZ_BASE_BAUD	8000000	/* 3072000 */
+#endif
+
+#define JAZZ_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
+
+#define JAZZ_PORT(base, int)						\
+{									\
+	.mapbase	= base,						\
+	.irq		= int,						\
+	.uartclk	= JAZZ_BASE_BAUD,				\
+	.iotype		= UPIO_MEM,					\
+	.flags		= JAZZ_UART_FLAGS,				\
+	.regshift	= 0,						\
+}
+
+static struct plat_serial8250_port uart8250_data[] = {
+	JAZZ_PORT(JAZZ_SERIAL1_BASE, JAZZ_SERIAL1_IRQ),
+	JAZZ_PORT(JAZZ_SERIAL2_BASE, JAZZ_SERIAL2_IRQ),
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for the Jazz family");
diff --git a/arch/mips/kernel/8250-platform.c b/arch/mips/kernel/8250-platform.c
new file mode 100644
index 0000000..cbf3fe2
--- /dev/null
+++ b/arch/mips/kernel/8250-platform.c
@@ -0,0 +1,47 @@
+/*
+ * 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) 2007 Ralf Baechle (ralf@linux-mips.org)
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+
+#define PORT(base, int)							\
+{									\
+	.iobase		= base,						\
+	.irq		= int,						\
+	.uartclk	= 1843200,					\
+	.iotype		= UPIO_PORT,					\
+	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,		\
+	.regshift	= 0,						\
+}
+
+static struct plat_serial8250_port uart8250_data[] = {
+	PORT(0x3F8, 4),
+	PORT(0x2F8, 3),
+	PORT(0x3E8, 4),
+	PORT(0x2E8, 3),
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Generic 8250 UART probe driver");
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index 4924626..bb25dd8 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -68,3 +68,5 @@
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 
 CFLAGS_cpu-bugs64.o	= $(shell if $(CC) $(CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
+
+obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT)	+= 8250-platform.o
diff --git a/arch/mips/mips-boards/malta/Makefile b/arch/mips/mips-boards/malta/Makefile
index 377d9e8..a242b0f 100644
--- a/arch/mips/mips-boards/malta/Makefile
+++ b/arch/mips/mips-boards/malta/Makefile
@@ -19,6 +19,7 @@
 # under Linux.
 #
 
-obj-y := malta_int.o malta_setup.o
+obj-y := malta_int.o malta_platform.o malta_setup.o
+
 obj-$(CONFIG_MTD) += malta_mtd.o
 obj-$(CONFIG_MIPS_MT_SMTC) += malta_smtc.o
diff --git a/arch/mips/mips-boards/malta/malta_platform.c b/arch/mips/mips-boards/malta/malta_platform.c
new file mode 100644
index 0000000..83b9bab
--- /dev/null
+++ b/arch/mips/mips-boards/malta/malta_platform.c
@@ -0,0 +1,65 @@
+/*
+ * 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) 2007 MIPS Technologies, Inc.
+ *   written by Ralf Baechle (ralf@linux-mips.org)
+ *
+ * Probe driver for the Malta's UART ports:
+ *
+ *   o 2 ports in the SMC SuperIO
+ *   o 1 port in the CBUS UART, a discrete 16550 which normally is only used
+ *     for bringups.
+ *
+ * We don't use 8250_platform.c on Malta as it would result in the CBUS
+ * UART becoming ttyS0.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+
+#define SMC_PORT(base, int)						\
+{									\
+	.iobase		= base,						\
+	.irq		= int,						\
+	.uartclk	= 1843200,					\
+	.iotype		= UPIO_PORT,					\
+	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,		\
+	.regshift	= 0,						\
+}
+
+#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
+
+static struct plat_serial8250_port uart8250_data[] = {
+	SMC_PORT(0x3F8, 4),
+	SMC_PORT(0x2F8, 3),
+	{
+		.mapbase	= 0x1f000900,	/* The CBUS UART */
+		.irq		= MIPS_CPU_IRQ_BASE + 2,
+		.uartclk	= 3686400,	/* Twice the usual clk! */
+		.iotype		= UPIO_MEM32,
+		.flags		= CBUS_UART_FLAGS,
+		.regshift	= 3,
+	},
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM2,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for the Malta CBUS UART");
diff --git a/arch/mips/momentum/ocelot_3/platform.c b/arch/mips/momentum/ocelot_3/platform.c
index 44e4c3f..cb63c82 100644
--- a/arch/mips/momentum/ocelot_3/platform.c
+++ b/arch/mips/momentum/ocelot_3/platform.c
@@ -1,8 +1,19 @@
+/*
+ * 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) 2006, 07 Ralf Baechle (ralf@linux-mips.org)
+ * Copyright (C) 2007 Dale Farnsworth (dale@farnsworth.org)
+ */
 #include <linux/delay.h>
 #include <linux/if_ether.h>
+#include <linux/init.h>
 #include <linux/ioport.h>
+#include <linux/module.h>
 #include <linux/mv643xx.h>
 #include <linux/platform_device.h>
+#include <linux/serial_8250.h>
 
 #include "ocelot_3_fpga.h"
 
@@ -206,3 +217,36 @@
 device_initcall(mv643xx_eth_add_pds);
 
 #endif /* defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE) */
+
+#define OCELOT3_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)
+
+static struct plat_serial8250_port uart8250_data[] = {
+	{
+		.membase	= (signed long) 0xfd000020,
+		.irq		= 6,
+		.uartclk	= 20000000,
+		.iotype		= UPIO_MEM,
+		.flags		= OCELOT3_UART_FLAGS,
+		.regshift	= 2,
+	},
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	return platform_device_register(&uart8250_device);
+}
+
+module_init(uart8250_init);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for the Ocelot 3");
diff --git a/arch/mips/sgi-ip32/ip32-platform.c b/arch/mips/sgi-ip32/ip32-platform.c
index 120b159..ba3697e 100644
--- a/arch/mips/sgi-ip32/ip32-platform.c
+++ b/arch/mips/sgi-ip32/ip32-platform.c
@@ -1,5 +1,53 @@
+/*
+ * 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) 2007 Ralf Baechle (ralf@linux-mips.org)
+ */
+#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+
+#include <asm/ip32/mace.h>
+#include <asm/ip32/ip32_ints.h>
+
+/*
+ * .iobase isn't a constant (in the sense of C) so we fill it in at runtime.
+ */
+#define MACE_PORT(int)							\
+{									\
+	.irq		= int,						\
+	.uartclk	= 1843200,					\
+	.iotype		= UPIO_MEM,					\
+	.flags		= UPF_SKIP_TEST,				\
+	.regshift	= 8,						\
+}
+
+static struct plat_serial8250_port uart8250_data[] = {
+	MACE_PORT(MACEISA_SERIAL1_IRQ),
+	MACE_PORT(MACEISA_SERIAL2_IRQ),
+	{ },
+};
+
+static struct platform_device uart8250_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= uart8250_data,
+	},
+};
+
+static int __init uart8250_init(void)
+{
+	uart8250_data[0].iobase = (unsigned long) &mace->isa.serial1;
+	uart8250_data[1].iobase = (unsigned long) &mace->isa.serial1;
+
+	return platform_device_register(&uart8250_device);
+}
+
+device_initcall(uart8250_init);
 
 static __init int meth_devinit(void)
 {
@@ -18,3 +66,7 @@
 }
 
 device_initcall(meth_devinit);
+
+MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("8250 UART probe driver for SGI IP32 aka O2");
diff --git a/arch/mips/sgi-ip32/ip32-setup.c b/arch/mips/sgi-ip32/ip32-setup.c
index 57708fe..bbba066 100644
--- a/arch/mips/sgi-ip32/ip32-setup.c
+++ b/arch/mips/sgi-ip32/ip32-setup.c
@@ -62,12 +62,6 @@
 }
 #endif
 
-#ifdef CONFIG_SERIAL_8250
-#include <linux/tty.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#endif /* CONFIG_SERIAL_8250 */
-
 /* An arbitrary time; this can be decreased if reliability looks good */
 #define WAIT_MS 10
 
@@ -96,36 +90,6 @@
 
 	board_time_init = ip32_time_init;
 
-#ifdef CONFIG_SERIAL_8250
-	{
-		static struct uart_port o2_serial[2];
-
-		memset(o2_serial, 0, sizeof(o2_serial));
-		o2_serial[0].type	= PORT_16550A;
-		o2_serial[0].line	= 0;
-		o2_serial[0].irq	= MACEISA_SERIAL1_IRQ;
-		o2_serial[0].flags	= UPF_SKIP_TEST;
-		o2_serial[0].uartclk	= 1843200;
-		o2_serial[0].iotype	= UPIO_MEM;
-		o2_serial[0].membase	= (char *)&mace->isa.serial1;
-		o2_serial[0].fifosize	= 14;
-                /* How much to shift register offset by. Each UART register
-		 * is replicated over 256 byte space */
-		o2_serial[0].regshift	= 8;
-		o2_serial[1].type	= PORT_16550A;
-		o2_serial[1].line	= 1;
-		o2_serial[1].irq	= MACEISA_SERIAL2_IRQ;
-		o2_serial[1].flags	= UPF_SKIP_TEST;
-		o2_serial[1].uartclk	= 1843200;
-		o2_serial[1].iotype	= UPIO_MEM;
-		o2_serial[1].membase	= (char *)&mace->isa.serial2;
-		o2_serial[1].fifosize	= 14;
-		o2_serial[1].regshift	= 8;
-
-		early_serial_setup(&o2_serial[0]);
-		early_serial_setup(&o2_serial[1]);
-	}
-#endif
 #ifdef CONFIG_SGI_O2MACE_ETH
 	{
 		char *mac = ArcGetEnvironmentVariable("eaddr");