ARM: 8113/1: remove remaining definitions of PLAT_PHYS_OFFSET from <mach/memory.h>

The platforms selecting NEED_MACH_MEMORY_H defined the start address of
their physical memory in the respective <mach/memory.h>. With
ARM_PATCH_PHYS_VIRT=y (which is quite common today) this is useless
though because the definition isn't used but determined dynamically.

So remove the definitions from all <mach/memory.h> and provide the
Kconfig symbol PHYS_OFFSET with the respective defaults in case
ARM_PATCH_PHYS_VIRT isn't enabled.

This allows to drop the dependency of PHYS_OFFSET on !NEED_MACH_MEMORY_H
which prevents compiling an integrator nommu-kernel.
(CONFIG_PAGE_OFFSET which has "default PHYS_OFFSET if !MMU" expanded to
"0x" because CONFIG_PHYS_OFFSET doesn't exist as INTEGRATOR selects
NEED_MACH_MEMORY_H.)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -262,8 +262,22 @@ config NEED_MACH_MEMORY_H
 
 config PHYS_OFFSET
 	hex "Physical address of main memory" if MMU
-	depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
+	depends on !ARM_PATCH_PHYS_VIRT
 	default DRAM_BASE if !MMU
+	default 0x00000000 if ARCH_EBSA110 || \
+			EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
+			ARCH_FOOTBRIDGE || \
+			ARCH_INTEGRATOR || \
+			ARCH_IOP13XX || \
+			ARCH_KS8695 || \
+			(ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
+	default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
+	default 0x20000000 if ARCH_S5PV210
+	default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
+	default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
+	default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
+	default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
+	default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
 	help
 	  Please provide the physical address corresponding to the
 	  location of main memory in your system.
@@ -435,7 +449,6 @@ config ARCH_EP93XX
 	select ARM_VIC
 	select CLKDEV_LOOKUP
 	select CPU_ARM920T
-	select NEED_MACH_MEMORY_H
 	help
 	  This enables support for the Cirrus EP93xx series of CPUs.
 

arch/arm/include/asm/memory.h

@@ -150,13 +150,11 @@
 
 /*
  * PLAT_PHYS_OFFSET is the offset (from zero) of the start of physical
- * memory.  This is used for XIP and NoMMU kernels, or by kernels which
- * have their own mach/memory.h.  Assembly code must always use
+ * memory.  This is used for XIP and NoMMU kernels, and on platforms that don't
+ * have CONFIG_ARM_PATCH_PHYS_VIRT. Assembly code must always use
  * PLAT_PHYS_OFFSET and not PHYS_OFFSET.
  */
-#ifndef PLAT_PHYS_OFFSET
 #define PLAT_PHYS_OFFSET	UL(CONFIG_PHYS_OFFSET)
-#endif
 
 #ifndef __ASSEMBLY__
 

arch/arm/mach-ebsa110/include/mach/memory.h

@@ -16,11 +16,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * Physical DRAM offset.
- */
-#define PLAT_PHYS_OFFSET	UL(0x00000000)
-
 /*
  * Cache flushing area - SRAM
  */

arch/arm/mach-ep93xx/include/mach/memory.h

@@ -1,22 +0,0 @@
-/*
- * arch/arm/mach-ep93xx/include/mach/memory.h
- */
-
-#ifndef __ASM_ARCH_MEMORY_H
-#define __ASM_ARCH_MEMORY_H
-
-#if defined(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET)
-#define PLAT_PHYS_OFFSET		UL(0x00000000)
-#elif defined(CONFIG_EP93XX_SDCE0_PHYS_OFFSET)
-#define PLAT_PHYS_OFFSET		UL(0xc0000000)
-#elif defined(CONFIG_EP93XX_SDCE1_PHYS_OFFSET)
-#define PLAT_PHYS_OFFSET		UL(0xd0000000)
-#elif defined(CONFIG_EP93XX_SDCE2_PHYS_OFFSET)
-#define PLAT_PHYS_OFFSET		UL(0xe0000000)
-#elif defined(CONFIG_EP93XX_SDCE3_ASYNC_PHYS_OFFSET)
-#define PLAT_PHYS_OFFSET		UL(0xf0000000)
-#else
-#error "Kconfig bug: No EP93xx PHYS_OFFSET set"
-#endif
-
-#endif

arch/arm/mach-footbridge/include/mach/memory.h

@@ -59,11 +59,6 @@ extern unsigned long __bus_to_pfn(unsigned long);
  */
 #define FLUSH_BASE		0xf9000000
 
-/*
- * Physical DRAM offset.
- */
-#define PLAT_PHYS_OFFSET		UL(0x00000000)
-
 #define FLUSH_BASE_PHYS		0x50000000
 
 #endif

arch/arm/mach-integrator/include/mach/memory.h

@@ -20,11 +20,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * Physical DRAM offset.
- */
-#define PLAT_PHYS_OFFSET	UL(0x00000000)
-
 #define BUS_OFFSET	UL(0x80000000)
 #define __virt_to_bus(x)	((x) - PAGE_OFFSET + BUS_OFFSET)
 #define __bus_to_virt(x)	((x) - BUS_OFFSET + PAGE_OFFSET)

arch/arm/mach-iop13xx/include/mach/memory.h

@@ -3,11 +3,6 @@
 
 #include <mach/hardware.h>
 
-/*
- * Physical DRAM offset.
- */
-#define PLAT_PHYS_OFFSET	UL(0x00000000)
-
 #ifndef __ASSEMBLY__
 
 #if defined(CONFIG_ARCH_IOP13XX)

arch/arm/mach-ks8695/include/mach/memory.h

@@ -15,11 +15,6 @@
 
 #include <mach/hardware.h>
 
-/*
- * Physical SRAM offset.
- */
-#define PLAT_PHYS_OFFSET		KS8695_SDRAM_PA
-
 #ifndef __ASSEMBLY__
 
 #ifdef CONFIG_PCI

arch/arm/mach-omap1/include/mach/memory.h

@@ -5,11 +5,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * Physical DRAM offset.
- */
-#define PLAT_PHYS_OFFSET		UL(0x10000000)
-
 /*
  * Bus address is physical address, except for OMAP-1510 Local Bus.
  * OMAP-1510 bus address is translated into a Local Bus address if the

arch/arm/mach-realview/include/mach/memory.h

@@ -20,15 +20,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * Physical DRAM offset.
- */
-#ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
-#define PLAT_PHYS_OFFSET		UL(0x70000000)
-#else
-#define PLAT_PHYS_OFFSET		UL(0x00000000)
-#endif
-
 #ifdef CONFIG_SPARSEMEM
 
 /*

arch/arm/mach-rpc/include/mach/memory.h

@@ -18,11 +18,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * Physical DRAM offset.
- */
-#define PLAT_PHYS_OFFSET	UL(0x10000000)
-
 /*
  * Cache flushing area - ROM
  */

arch/arm/mach-s5pv210/include/mach/memory.h

@@ -13,8 +13,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-#define PLAT_PHYS_OFFSET		UL(0x20000000)
-
 /*
  * Sparsemem support
  * Physical memory can be located from 0x20000000 to 0x7fffffff,

arch/arm/mach-sa1100/include/mach/memory.h

@@ -9,11 +9,6 @@
 
 #include <asm/sizes.h>
 
-/*
- * Physical DRAM offset is 0xc0000000 on the SA1100
- */
-#define PLAT_PHYS_OFFSET	UL(0xc0000000)
-
 /*
  * Because of the wide memory address space between physical RAM banks on the
  * SA1100, it's much convenient to use Linux's SparseMEM support to implement