5 files changed, 41 insertions, 19 deletions

diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index 9f33cb21e7f3..6b393691d0e8 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -332,11 +332,27 @@ static struct platform_device *ixp46x_devices[] __initdata = {
         &ixp46x_i2c_controller
 };
 
+unsigned long ixp4xx_exp_bus_size;
+
 void __init ixp4xx_sys_init(void)
 {
+        ixp4xx_exp_bus_size = SZ_16M;
+
         if (cpu_is_ixp46x()) {
+                int region;
+
                 platform_add_devices(ixp46x_devices,
                                 ARRAY_SIZE(ixp46x_devices));
+
+                for (region = 0; region < 7; region++) {
+                        if((*(IXP4XX_EXP_REG(0x4 * region)) & 0x200)) {
+                                ixp4xx_exp_bus_size = SZ_32M;
+                                break;
+                        }
+                }
         }
+
+        printk("IXP4xx: Using %uMiB expansion bus window size\n",
+                        ixp4xx_exp_bus_size >> 20);
 }
 
diff --git a/arch/arm/mach-ixp4xx/coyote-setup.c b/arch/arm/mach-ixp4xx/coyote-setup.c
index 050c92768913..679594a73981 100644
--- a/arch/arm/mach-ixp4xx/coyote-setup.c
+++ b/arch/arm/mach-ixp4xx/coyote-setup.c
@@ -14,6 +14,7 @@
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
+#include <linux/slab.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -30,8 +31,6 @@ static struct flash_platform_data coyote_flash_data = {
 };
 
 static struct resource coyote_flash_resource = {
-        .start          = COYOTE_FLASH_BASE,
-        .end            = COYOTE_FLASH_BASE + COYOTE_FLASH_SIZE - 1,
         .flags          = IORESOURCE_MEM,
 };
 
@@ -81,6 +80,11 @@ static struct platform_device *coyote_devices[] __initdata = {
 
 static void __init coyote_init(void)
 {
+        ixp4xx_sys_init();
+
+        coyote_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+        coyote_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_32M - 1;
+
         *IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
         *IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
 
@@ -91,8 +95,6 @@ static void __init coyote_init(void)
                 coyote_uart_data[0].irq = IRQ_IXP4XX_UART1;
         }
 
-
-        ixp4xx_sys_init();
         platform_add_devices(coyote_devices, ARRAY_SIZE(coyote_devices));
 }
 
diff --git a/arch/arm/mach-ixp4xx/gtwx5715-setup.c b/arch/arm/mach-ixp4xx/gtwx5715-setup.c
index 29a6d02fa851..038670489970 100644
--- a/arch/arm/mach-ixp4xx/gtwx5715-setup.c
+++ b/arch/arm/mach-ixp4xx/gtwx5715-setup.c
@@ -27,6 +27,7 @@
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
+#include <linux/slab.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -106,11 +107,9 @@ static struct flash_platform_data gtwx5715_flash_data = {
         .width          = 2,
 };
 
-static struct resource gtwx5715_flash_resource = {
-        .start          = GTWX5715_FLASH_BASE,
-        .end            = GTWX5715_FLASH_BASE + GTWX5715_FLASH_SIZE - 1,
+static struct gtw5715_flash_resource = {
         .flags          = IORESOURCE_MEM,
-};
+}
 
 static struct platform_device gtwx5715_flash = {
         .name           = "IXP4XX-Flash",
@@ -129,6 +128,14 @@ static struct platform_device *gtwx5715_devices[] __initdata = {
 
 static void __init gtwx5715_init(void)
 {
+        ixp4xx_sys_init();
+
+        if (!flash_resource)
+                printk(KERN_ERR "Could not allocate flash resource\n");
+
+        gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+        gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;
+
         platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
 }
 
diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c
index 3a22d84e1047..c2e105c89c95 100644
--- a/arch/arm/mach-ixp4xx/ixdp425-setup.c
+++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c
@@ -14,6 +14,7 @@
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
+#include <linux/slab.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -30,8 +31,6 @@ static struct flash_platform_data ixdp425_flash_data = {
 };
 
 static struct resource ixdp425_flash_resource = {
-        .start          = IXDP425_FLASH_BASE,
-        .end            = IXDP425_FLASH_BASE + IXDP425_FLASH_SIZE - 1,
         .flags          = IORESOURCE_MEM,
 };
 
@@ -108,17 +107,13 @@ static struct platform_device *ixdp425_devices[] __initdata = {
         &ixdp425_uart
 };
 
-
 static void __init ixdp425_init(void)
 {
         ixp4xx_sys_init();
 
-        /*
-         * IXP465 has 32MB window
-         */
-        if (machine_is_ixdp465()) {
-                ixdp425_flash_resource.end += IXDP425_FLASH_SIZE;
-        }
+        ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+        ixdp425_flash_resource.end =
+                IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 
         platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
 }
diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c
index bde9648e7afc..49998a8bd4e8 100644
--- a/arch/arm/mach-ixp4xx/nas100d-setup.c
+++ b/arch/arm/mach-ixp4xx/nas100d-setup.c
@@ -26,8 +26,6 @@ static struct flash_platform_data nas100d_flash_data = {
 };
 
 static struct resource nas100d_flash_resource = {
-        .start                  = NAS100D_FLASH_BASE,
-        .end                    = NAS100D_FLASH_BASE + NAS100D_FLASH_SIZE,
         .flags                  = IORESOURCE_MEM,
 };
 
@@ -115,6 +113,10 @@ static void __init nas100d_init(void)
 {
         ixp4xx_sys_init();
 
+        nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+        nas100d_flash_resource.end =
+                IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
+
         pm_power_off = nas100d_power_off;
 
         platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices));