[ARM] 5523/1: ep93xx phys offset selection

This patch adds a Kconfig option to select between ep93xx boards which
boot from the SDRAM bank at 0x00000000 (SDCE3/SyncBoot) and those which
boot from 0xc0000000 (SDCE0). This corrects a problem which causes
invalid images to be built for boards which boot from 0xc0000000.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-ep93xx/Kconfig

@@ -9,18 +9,37 @@ config CRUNCH
 
 comment "EP93xx Platforms"
 
+choice
+	prompt "EP93xx first SDRAM bank selection"
+	default EP93XX_SDCE3_SYNC_PHYS_OFFSET
+
+config EP93XX_SDCE3_SYNC_PHYS_OFFSET
+	bool "0x00000000 - SDCE3/SyncBoot"
+	help
+	  Select this option if you want support for EP93xx boards with the
+	  first SDRAM bank at 0x00000000
+
+config EP93XX_SDCE0_PHYS_OFFSET
+	bool "0xc0000000 - SDCEO"
+	help
+	  Select this option if you want support for EP93xx boards with the
+	  first SDRAM bank at 0xc0000000
+
+endchoice
+
 config MACH_ADSSPHERE
 	bool "Support ADS Sphere"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	help
 	  Say 'Y' here if you want your kernel to support the ADS
 	  Sphere board.
 
 config MACH_EDB93XX
 	bool
-	default n
 
 config MACH_EDB9301
 	bool "Support Cirrus Logic EDB9301"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
@@ -28,6 +47,7 @@ config MACH_EDB9301
 
 config MACH_EDB9302
 	bool "Support Cirrus Logic EDB9302"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
@@ -35,6 +55,7 @@ config MACH_EDB9302
 
 config MACH_EDB9302A
 	bool "Support Cirrus Logic EDB9302A"
+	depends on EP93XX_SDCE0_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
@@ -42,6 +63,7 @@ config MACH_EDB9302A
 
 config MACH_EDB9307
 	bool "Support Cirrus Logic EDB9307"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
@@ -49,6 +71,7 @@ config MACH_EDB9307
 
 config MACH_EDB9307A
 	bool "Support Cirrus Logic EDB9307A"
+	depends on EP93XX_SDCE0_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
@@ -56,6 +79,7 @@ config MACH_EDB9307A
 
 config MACH_EDB9312
 	bool "Support Cirrus Logic EDB9312"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
@@ -63,6 +87,7 @@ config MACH_EDB9312
 
 config MACH_EDB9315
 	bool "Support Cirrus Logic EDB9315"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
@@ -70,12 +95,14 @@ config MACH_EDB9315
 
 config MACH_EDB9315A
 	bool "Support Cirrus Logic EDB9315A"
+	depends on EP93XX_SDCE0_PHYS_OFFSET
 	select MACH_EDB93XX
 	help
 	  Say 'Y' here if you want your kernel to support the Cirrus
 	  Logic EDB9315A Evaluation Board.
 
 config MACH_GESBC9312
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	bool "Support Glomation GESBC-9312-sx"
 	help
 	  Say 'Y' here if you want your kernel to support the Glomation
@@ -83,10 +110,10 @@ config MACH_GESBC9312
 
 config MACH_MICRO9
 	bool
-	default n
 
 config MACH_MICRO9H
 	bool "Support Contec Hypercontrol Micro9-H"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_MICRO9
 	help
 	  Say 'Y' here if you want your kernel to support the
@@ -94,6 +121,7 @@ config MACH_MICRO9H
 
 config MACH_MICRO9M
 	bool "Support Contec Hypercontrol Micro9-M"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_MICRO9
 	help
 	  Say 'Y' here if you want your kernel to support the
@@ -101,6 +129,7 @@ config MACH_MICRO9M
 
 config MACH_MICRO9L
 	bool "Support Contec Hypercontrol Micro9-L"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_MICRO9
 	help
 	  Say 'Y' here if you want your kernel to support the
@@ -108,6 +137,7 @@ config MACH_MICRO9L
 
 config MACH_TS72XX
 	bool "Support Technologic Systems TS-72xx SBC"
+	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	help
 	  Say 'Y' here if you want your kernel to support the
 	  Technologic Systems TS-72xx board.

arch/arm/mach-ep93xx/Makefile.boot

-   zreladdr-y	:= 0x00008000
-params_phys-y	:= 0x00000100
+   zreladdr-$(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET)	:= 0x00008000
+params_phys-$(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET)	:= 0x00000100
+
+   zreladdr-$(CONFIG_EP93XX_SDCE0_PHYS_OFFSET)		:= 0xc0008000
+params_phys-$(CONFIG_EP93XX_SDCE0_PHYS_OFFSET)		:= 0xc0000100

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

@@ -5,6 +5,12 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
+#if defined(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET)
 #define PHYS_OFFSET		UL(0x00000000)
+#elif defined(CONFIG_EP93XX_SDCE0_PHYS_OFFSET)
+#define PHYS_OFFSET		UL(0xc0000000)
+#else
+#error "Kconfig bug: No EP93xx PHYS_OFFSET set"
+#endif
 
 #endif