[ARM] 3818/1: iop3xx: introduce arch/arm/plat-iop for shared iop32x/iop33x code

Introduce the arch/arm/plat-iop directory, for code shared between the
iop32x and iop33x, and move the common memory map setup bits there.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -205,6 +205,7 @@ config ARCH_IMX
 config ARCH_IOP32X
 	bool "IOP32x-based"
 	depends on MMU
+	select PLAT_IOP
 	select PCI
 	help
 	  Support for Intel's 80219 and IOP32X (XScale) family of
@@ -213,6 +214,7 @@ config ARCH_IOP32X
 config ARCH_IOP33X
 	bool "IOP33x-based"
 	depends on MMU
+	select PLAT_IOP
 	select PCI
 	help
 	  Support for Intel's IOP33X (XScale) family of processors.
@@ -362,6 +364,9 @@ source "arch/arm/mach-netx/Kconfig"
 config ARCH_ACORN
 	bool
 
+config PLAT_IOP
+	bool
+
 source arch/arm/mm/Kconfig
 
 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER

arch/arm/Makefile

@@ -158,6 +158,7 @@ core-$(CONFIG_FPE_FASTFPE)	+= $(FASTFPE_OBJ)
 core-$(CONFIG_VFP)		+= arch/arm/vfp/
 
 # If we have a common platform directory, then include it in the build.
+core-$(CONFIG_PLAT_IOP)		+= arch/arm/plat-iop/
 core-$(CONFIG_ARCH_OMAP)	+= arch/arm/plat-omap/
 
 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/

arch/arm/mach-iop32x/iq31244-mm.c

@@ -21,6 +21,7 @@
 #include <asm/page.h>
 
 #include <asm/mach/map.h>
+#include <asm/hardware/iop3xx.h>
 
 
 /*
@@ -39,7 +40,7 @@ static struct map_desc iq31244_io_desc[] __initdata = {
 
 void __init iq31244_map_io(void)
 {
-	iop321_map_io();
+	iop3xx_map_io();
 
 	iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
 }

arch/arm/mach-iop32x/iq80321-mm.c

@@ -21,6 +21,7 @@
 #include <asm/page.h>
 
 #include <asm/mach/map.h>
+#include <asm/hardware/iop3xx.h>
 
 
 /*
@@ -39,7 +40,7 @@ static struct map_desc iq80321_io_desc[] __initdata = {
 
 void __init iq80321_map_io(void)
 {
-	iop321_map_io();
+	iop3xx_map_io();
 
 	iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
 }

arch/arm/mach-iop32x/setup.c

@@ -32,23 +32,6 @@
 
 #define IOP321_UART_XTAL 1843200
 
-/*
- * Standard IO mapping for all IOP321 based systems
- */
-static struct map_desc iop321_std_desc[] __initdata = {
-	 {	/* mem mapped registers */
-		.virtual	= IOP321_VIRT_MEM_BASE,
-		.pfn		= __phys_to_pfn(IOP321_PHYS_MEM_BASE),
-		.length		= 0x00002000,
-		.type		= MT_DEVICE
-	 }, {	/* PCI IO space */
-		.virtual	= IOP321_PCI_LOWER_IO_VA,
-		.pfn		= __phys_to_pfn(IOP321_PCI_LOWER_IO_PA),
-		.length		= IOP321_PCI_IO_WINDOW_SIZE,
-		.type		= MT_DEVICE
-	 }
-};
-
 #ifdef CONFIG_ARCH_IQ80321
 #define UARTBASE IQ80321_UART
 #define IRQ_UART IRQ_IQ80321_UART
@@ -126,11 +109,6 @@ void __init iop32x_init(void)
 		platform_add_devices(iop32x_devices,
 				ARRAY_SIZE(iop32x_devices));
 	}
-}
-
-void __init iop321_map_io(void)
-{
-	iotable_init(iop321_std_desc, ARRAY_SIZE(iop321_std_desc));
 	early_serial_setup(&iop321_serial_ports[0]);
 }
 

arch/arm/mach-iop33x/Makefile

@@ -7,5 +7,5 @@ obj-m			:=
 obj-n			:=
 obj-			:=
 
-obj-$(CONFIG_ARCH_IQ80331) += iq80331-mm.o iq80331-pci.o
-obj-$(CONFIG_MACH_IQ80332) += iq80332-mm.o iq80332-pci.o
+obj-$(CONFIG_ARCH_IQ80331) += iq80331-pci.o
+obj-$(CONFIG_MACH_IQ80332) += iq80332-pci.o

arch/arm/mach-iop33x/iq80331-mm.c

@@ -1,35 +0,0 @@
-/*
- * linux/arch/arm/mach-iop33x/iq80331-mm.c
- *
- * Low level memory initialization for iq80331 platform
- *
- * Author: Dave Jiang <dave.jiang@intel.com>
- * Copyright (C) 2003 Intel Corp.
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-
-#include <linux/mm.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-
-#include <asm/mach/map.h>
-
-
-/*
- * IQ80331 specific IO mappings
- *
- * We use RedBoot's setup for the onboard devices.
- */
-
-void __init iq80331_map_io(void)
-{
-	iop331_map_io();
-}

arch/arm/mach-iop33x/iq80332-mm.c

@@ -1,35 +0,0 @@
-/*
- * linux/arch/arm/mach-iop33x/iq80332-mm.c
- *
- * Low level memory initialization for iq80332 platform
- *
- * Author: Dave Jiang <dave.jiang@intel.com>
- * Copyright (C) 2004 Intel Corp.
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-
-#include <linux/mm.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-
-#include <asm/mach/map.h>
-
-
-/*
- * IQ80332 specific IO mappings
- *
- * We use RedBoot's setup for the onboard devices.
- */
-
-void __init iq80332_map_io(void)
-{
-	iop331_map_io();
-}

arch/arm/mach-iop33x/setup.c

@@ -28,26 +28,10 @@
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
+#include <asm/hardware/iop3xx.h>
 
 #define IOP331_UART_XTAL 33334000
 
-/*
- * Standard IO mapping for all IOP331 based systems
- */
-static struct map_desc iop331_std_desc[] __initdata = {
-	{	/* mem mapped registers */
-		.virtual	= IOP331_VIRT_MEM_BASE,
-		.pfn		= __phys_to_pfn(IOP331_PHYS_MEM_BASE),
-		.length		= 0x00002000,
-		.type		= MT_DEVICE
-	}, {	/* PCI IO space */
-		.virtual	= IOP331_PCI_LOWER_IO_VA,
-		.pfn		= __phys_to_pfn(IOP331_PCI_LOWER_IO_PA),
-		.length		= IOP331_PCI_IO_WINDOW_SIZE,
-		.type		= MT_DEVICE
-	}
-};
-
 static struct resource iop33x_uart0_resources[] = {
 	[0] = {
 		.start = IOP331_UART0_PHYS,
@@ -172,30 +156,17 @@ void __init iop33x_init(void)
 	}
 }
 
-void __init iop331_map_io(void)
-{
-	iotable_init(iop331_std_desc, ARRAY_SIZE(iop331_std_desc));
-}
-
 #ifdef CONFIG_ARCH_IOP33X
 extern void iop331_init_irq(void);
 extern struct sys_timer iop331_timer;
 #endif
 
-#ifdef CONFIG_ARCH_IQ80331
-extern void iq80331_map_io(void);
-#endif
-
-#ifdef CONFIG_MACH_IQ80332
-extern void iq80332_map_io(void);
-#endif
-
 #if defined(CONFIG_ARCH_IQ80331)
 MACHINE_START(IQ80331, "Intel IQ80331")
 	/* Maintainer: Intel Corp. */
 	.phys_io	= 0xfefff000,
 	.io_pg_offst	= ((0xfffff000) >> 18) & 0xfffc, // virtual, physical
-	.map_io		= iq80331_map_io,
+	.map_io		= iop3xx_map_io,
 	.init_irq	= iop331_init_irq,
 	.timer		= &iop331_timer,
 	.boot_params	= 0x0100,
@@ -207,7 +178,7 @@ MACHINE_START(IQ80332, "Intel IQ80332")
 	/* Maintainer: Intel Corp. */
 	.phys_io	= 0xfefff000,
 	.io_pg_offst	= ((0xfffff000) >> 18) & 0xfffc, // virtual, physical
-	.map_io		= iq80332_map_io,
+	.map_io		= iop3xx_map_io,
 	.init_irq	= iop331_init_irq,
 	.timer		= &iop331_timer,
 	.boot_params	= 0x0100,

arch/arm/plat-iop/Makefile

@@ -0,0 +1,8 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-y			:= setup.o
+obj-m			:=
+obj-n			:=
+obj-			:=

arch/arm/plat-iop/setup.c

@@ -0,0 +1,38 @@
+/*
+ * arch/arm/plat-iop/setup.c
+ *
+ * Author: Nicolas Pitre <nico@cam.org>
+ * Copyright (C) 2001 MontaVista Software, Inc.
+ * Copyright (C) 2004 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <asm/mach/map.h>
+#include <asm/hardware/iop3xx.h>
+
+/*
+ * Standard IO mapping for all IOP3xx based systems
+ */
+static struct map_desc iop3xx_std_desc[] __initdata = {
+	 {	/* mem mapped registers */
+		.virtual	= IOP3XX_PERIPHERAL_VIRT_BASE,
+		.pfn		= __phys_to_pfn(IOP3XX_PERIPHERAL_PHYS_BASE),
+		.length		= IOP3XX_PERIPHERAL_SIZE,
+		.type		= MT_DEVICE,
+	 }, {	/* PCI IO space */
+		.virtual	= IOP3XX_PCI_LOWER_IO_VA,
+		.pfn		= __phys_to_pfn(IOP3XX_PCI_LOWER_IO_PA),
+		.length		= IOP3XX_PCI_IO_WINDOW_SIZE,
+		.type		= MT_DEVICE,
+	 },
+};
+
+void __init iop3xx_map_io(void)
+{
+	iotable_init(iop3xx_std_desc, ARRAY_SIZE(iop3xx_std_desc));
+}

include/asm-arm/arch-iop32x/iop321.h

@@ -333,7 +333,6 @@
 
 
 #ifndef __ASSEMBLY__
-extern void iop321_map_io(void);
 extern void iop321_init_irq(void);
 extern void iop321_time_init(void);
 #endif

include/asm-arm/arch-iop33x/iop331.h

@@ -350,7 +350,6 @@
 
 
 #ifndef __ASSEMBLY__
-extern void iop331_map_io(void);
 extern void iop331_init_irq(void);
 extern void iop331_time_init(void);
 #endif

include/asm-arm/hardware/iop3xx.h

@@ -0,0 +1,43 @@
+/*
+ * include/asm-arm/hardware/iop3xx.h
+ *
+ * Intel IOP32X and IOP33X register definitions
+ *
+ * Author: Rory Bolt <rorybolt@pacbell.net>
+ * Copyright (C) 2002 Rory Bolt
+ * Copyright (C) 2004 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __IOP3XX_H
+#define __IOP3XX_H
+
+/*
+ * IOP3XX processor registers
+ */
+#define IOP3XX_PERIPHERAL_PHYS_BASE	0xffffe000
+#define IOP3XX_PERIPHERAL_VIRT_BASE	0xfeffe000
+#define IOP3XX_PERIPHERAL_SIZE		0x00002000
+#define IOP3XX_REG_ADDR(reg)		(IOP3XX_PERIPHERAL_VIRT_BASE + (reg))
+
+
+/*
+ * IOP3XX I/O and Mem space regions for PCI autoconfiguration
+ */
+#define IOP3XX_PCI_MEM_WINDOW_SIZE	0x04000000
+#define IOP3XX_PCI_LOWER_MEM_PA		0x80000000
+
+#define IOP3XX_PCI_IO_WINDOW_SIZE	0x00010000
+#define IOP3XX_PCI_LOWER_IO_PA		0x90000000
+#define IOP3XX_PCI_LOWER_IO_VA		0xfe000000
+
+
+#ifndef __ASSEMBLY__
+void iop3xx_map_io(void);
+#endif
+
+
+#endif