[ARM] 4806/1: ixp4xx: Ethernet support for the nslu2 and nas100d boards

Enables the new ixp4xx qmgr and npe drivers in ixp4xx_defconfig.

Sets up the corresponding platform data for the nslu2 and nas100d
boards, and reads the ethernet MAC address from the internal flash.

Tested on both little-endian and big-endian kernels.

Tested-by: Tom King <tom@websb.net>

Signed-off-by: Rod Whitby <rod@whitby.id.au>
Signed-off-by: Michael Westerhof <mwester@dls.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 44 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c
index 41d55c84164a..fd9ec17c8b86 100644
--- a/arch/arm/mach-ixp4xx/nslu2-setup.c
+++ b/arch/arm/mach-ixp4xx/nslu2-setup.c
@@ -14,6 +14,7 @@
  * Changed to conform to new style __init ixdp425 kas11 10/22/04
  */
 
+#include <linux/if_ether.h>
 #include <linux/kernel.h>
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
@@ -25,6 +26,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 #include <asm/mach/time.h>
+#include <asm/io.h>
 
 static struct flash_platform_data nslu2_flash_data = {
         .map_name               = "cfi_probe",
@@ -143,11 +145,29 @@ static struct platform_device nslu2_uart = {
         .resource               = nslu2_uart_resources,
 };
 
+/* Built-in 10/100 Ethernet MAC interfaces */
+static struct eth_plat_info nslu2_plat_eth[] = {
+        {
+                .phy            = 1,
+                .rxq            = 3,
+                .txreadyq       = 20,
+        }
+};
+
+static struct platform_device nslu2_eth[] = {
+        {
+                .name                   = "ixp4xx_eth",
+                .id                     = IXP4XX_ETH_NPEB,
+                .dev.platform_data      = nslu2_plat_eth,
+        }
+};
+
 static struct platform_device *nslu2_devices[] __initdata = {
         &nslu2_i2c_gpio,
         &nslu2_flash,
         &nslu2_beeper,
         &nslu2_leds,
+        &nslu2_eth[0],
 };
 
 static void nslu2_power_off(void)
@@ -176,6 +196,10 @@ static struct sys_timer nslu2_timer = {
 
 static void __init nslu2_init(void)
 {
+        DECLARE_MAC_BUF(mac_buf);
+        uint8_t __iomem *f;
+        int i;
+
         ixp4xx_sys_init();
 
         nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
@@ -195,6 +219,26 @@ static void __init nslu2_init(void)
         (void)platform_device_register(&nslu2_uart);
 
         platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
+
+
+        /*
+         * Map in a portion of the flash and read the MAC address.
+         * Since it is stored in BE in the flash itself, we need to
+         * byteswap it if we're in LE mode.
+         */
+        f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x40000);
+        if (f) {
+                for (i = 0; i < 6; i++)
+#ifdef __ARMEB__
+                        nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + i);
+#else
+                        nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + (i^3));
+#endif
+                iounmap(f);
+        }
+        printk(KERN_INFO "NSLU2: Using MAC address %s for port 0\n",
+               print_mac(mac_buf, nslu2_plat_eth[0].hwaddr));
+
 }
 
 MACHINE_START(NSLU2, "Linksys NSLU2")