nommu: Add MMU-less support for Integrator platforms

This patch redefines the IO_ADDRESS macro in
include/asm-arm/hardware.h.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm/mach-integrator/integrator_cp.c

@@ -48,14 +48,14 @@
 
 #define INTCP_PA_CLCD_BASE		0xc0000000
 
-#define INTCP_VA_CIC_BASE		0xf1000040
-#define INTCP_VA_PIC_BASE		0xf1400000
-#define INTCP_VA_SIC_BASE		0xfca00000
+#define INTCP_VA_CIC_BASE		IO_ADDRESS(INTEGRATOR_HDR_BASE) + 0x40
+#define INTCP_VA_PIC_BASE		IO_ADDRESS(INTEGRATOR_IC_BASE)
+#define INTCP_VA_SIC_BASE		IO_ADDRESS(0xca000000)
 
 #define INTCP_PA_ETH_BASE		0xc8000000
 #define INTCP_ETH_SIZE			0x10
 
-#define INTCP_VA_CTRL_BASE		0xfcb00000
+#define INTCP_VA_CTRL_BASE		IO_ADDRESS(0xcb000000)
 #define INTCP_FLASHPROG			0x04
 #define CINTEGRATOR_FLASHPROG_FLVPPEN	(1 << 0)
 #define CINTEGRATOR_FLASHPROG_FLWREN	(1 << 1)
@@ -120,12 +120,12 @@ static struct map_desc intcp_io_desc[] __initdata = {
 		.length		= SZ_4K,
 		.type		= MT_DEVICE
 	}, {
-		.virtual	= 0xfca00000,
+		.virtual	= IO_ADDRESS(0xca000000),
 		.pfn		= __phys_to_pfn(0xca000000),
 		.length		= SZ_4K,
 		.type		= MT_DEVICE
 	}, {
-		.virtual	= 0xfcb00000,
+		.virtual	= IO_ADDRESS(0xcb000000),
 		.pfn		= __phys_to_pfn(0xcb000000),
 		.length		= SZ_4K,
 		.type		= MT_DEVICE
@@ -393,8 +393,8 @@ static struct platform_device *intcp_devs[] __initdata = {
  */
 static unsigned int mmc_status(struct device *dev)
 {
-	unsigned int status = readl(0xfca00004);
-	writel(8, 0xfcb00008);
+	unsigned int status = readl(IO_ADDRESS(0xca000000) + 4);
+	writel(8, IO_ADDRESS(0xcb000000) + 8);
 
 	return status & 8;
 }

include/asm-arm/arch-integrator/hardware.h

@@ -36,8 +36,12 @@
 #define PCIO_BASE		PCI_IO_VADDR
 #define PCIMEM_BASE		PCI_MEMORY_VADDR
 
+#ifdef CONFIG_MMU
 /* macro to get at IO space when running virtually */
 #define IO_ADDRESS(x) (((x) >> 4) + IO_BASE) 
+#else
+#define IO_ADDRESS(x) (x)
+#endif
 
 #define pcibios_assign_all_busses()	1