4 files changed, 12 insertions, 7 deletions
diff --git a/arch/arm/mach-footbridge/include/mach/hardware.h b/arch/arm/mach-footbridge/include/mach/hardware.h
index ffaea90..ff44e0c 100644
--- a/arch/arm/mach-footbridge/include/mach/hardware.h
+++ b/arch/arm/mach-footbridge/include/mach/hardware.h
@@ -12,8 +12,6 @@
 #ifndef __ASM_ARCH_HARDWARE_H
 #define __ASM_ARCH_HARDWARE_H
 
-#include <mach/memory.h>
-
 /*   Virtual      Physical	Size
  * 0xff800000	0x40000000	1MB	X-Bus
  * 0xff000000	0x7c000000	1MB	PCI I/O space
@@ -28,9 +26,6 @@
 #define XBUS_SIZE		0x00100000
 #define XBUS_BASE		0xff800000
 
-#define PCIO_SIZE		0x00100000
-#define PCIO_BASE		0xff000000
-
 #define ARMCSR_SIZE		0x00100000
 #define ARMCSR_BASE		0xfe000000
 
diff --git a/arch/arm/mach-footbridge/include/mach/io.h b/arch/arm/mach-footbridge/include/mach/io.h
index a7b0662..101a4fe 100644
--- a/arch/arm/mach-footbridge/include/mach/io.h
+++ b/arch/arm/mach-footbridge/include/mach/io.h
@@ -14,7 +14,8 @@
 #ifndef __ASM_ARM_ARCH_IO_H
 #define __ASM_ARM_ARCH_IO_H
 
-#include <mach/hardware.h>
+#define PCIO_SIZE		0x00100000
+#define PCIO_BASE		0xff000000
 
 #define IO_SPACE_LIMIT 0xffff
 
diff --git a/arch/arm/mach-footbridge/include/mach/dma.h b/arch/arm/mach-footbridge/include/mach/isa-dma.h
index 62afd21..5bd4a0d 100644
--- a/arch/arm/mach-footbridge/include/mach/dma.h
+++ b/arch/arm/mach-footbridge/include/mach/isa-dma.h
@@ -1,5 +1,5 @@
 /*
- *  arch/arm/mach-footbridge/include/mach/dma.h
+ *  arch/arm/mach-footbridge/include/mach/isa-dma.h
  *
  *  Architecture DMA routines
  *
diff --git a/arch/arm/mach-footbridge/include/mach/memory.h b/arch/arm/mach-footbridge/include/mach/memory.h
index 6ae2f1a..cb16e59 100644
--- a/arch/arm/mach-footbridge/include/mach/memory.h
+++ b/arch/arm/mach-footbridge/include/mach/memory.h
@@ -30,9 +30,18 @@
 extern unsigned long __virt_to_bus(unsigned long);
 extern unsigned long __bus_to_virt(unsigned long);
 #endif
+#define __virt_to_bus	__virt_to_bus
+#define __bus_to_virt	__bus_to_virt
 
 #elif defined(CONFIG_FOOTBRIDGE_HOST)
 
+/*
+ * The footbridge is programmed to expose the system RAM at the corresponding
+ * address.  So, if PAGE_OFFSET is 0xc0000000, RAM appears at 0xe0000000.
+ * If 0x80000000, then its exposed at 0xa0000000 on the bus. etc.
+ * The only requirement is that the RAM isn't placed at bus address 0 which
+ * would clash with VGA cards.
+ */
 #define __virt_to_bus(x)	((x) - 0xe0000000)
 #define __bus_to_virt(x)	((x) + 0xe0000000)