I now have ethernet working, and I also copied in the settings for LEDs, Buttons, and MTD partitions and tried to create the correct support files. I have tested ethernet, LEDs, and buttons, they are working fine.
I suppose the next step is to flash the firmware onto the chip? Whats the trick for doing that in u-boot?
diff -urN target.old/linux/ar71xx/base-files/lib/ar71xx.sh target/linux/ar71xx/base-files/lib/ar71xx.sh
--- target.old/linux/ar71xx/base-files/lib/ar71xx.sh 2009-04-22 12:12:15.000000000 -0400
+++ target/linux/ar71xx/base-files/lib/ar71xx.sh 2009-04-23 10:46:04.000000000 -0400
@@ -52,6 +52,9 @@
*WNR2000)
name="wnr2000"
;;
+ *WRT400N)
+ name="wrt400n"
+ ;;
*)
name="generic"
;;
diff -urN target.old/linux/ar71xx/config-2.6.28 target/linux/ar71xx/config-2.6.28
--- target.old/linux/ar71xx/config-2.6.28 2009-04-22 12:12:15.000000000 -0400
+++ target/linux/ar71xx/config-2.6.28 2009-04-22 15:23:37.000000000 -0400
@@ -18,6 +18,7 @@
CONFIG_AR71XX_MACH_TL_WR941ND=y
CONFIG_AR71XX_MACH_UBNT=y
CONFIG_AR71XX_MACH_WNR2000=y
+CONFIG_AR71XX_MACH_WRT400N=y
CONFIG_AR71XX_MACH_WP543=y
CONFIG_AR71XX_WDT=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
diff -urN target.old/linux/ar71xx/files/arch/mips/ar71xx/Kconfig target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig
--- target.old/linux/ar71xx/files/arch/mips/ar71xx/Kconfig 2009-04-22 12:12:15.000000000 -0400
+++ target/linux/ar71xx/files/arch/mips/ar71xx/Kconfig 2009-04-23 10:44:01.000000000 -0400
@@ -39,6 +39,10 @@
bool "NETGEAR WNR2000 board support"
default y
+config AR71XX_MACH_WRT400N
+ bool "Linksys WRT400N board support"
+ default y
+
config AR71XX_MACH_MZK_W04NU
bool "Planex MZK-W04NU board support"
default y
diff -urN target.old/linux/ar71xx/files/arch/mips/ar71xx/mach-wrt400n.c target/linux/ar71xx/files/arch/mips/ar71xx/mach-wrt400n.c
--- target.old/linux/ar71xx/files/arch/mips/ar71xx/mach-wrt400n.c 1969-12-31 19:00:00.000000000 -0500
+++ target/linux/ar71xx/files/arch/mips/ar71xx/mach-wrt400n.c 2009-04-22 15:20:55.000000000 -0400
@@ -0,0 +1,157 @@
+/*
+ * Linksys wrt400n board support
+ *
+ * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2009 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+#include <linux/input.h>
+
+#include <asm/mips_machine.h>
+#include <asm/mach-ar71xx/ar71xx.h>
+
+#include "devices.h"
+
+#define WRT400N_GPIO_LED_ORANGE 5
+#define WRT400N_GPIO_LED_GREEN 4
+#define WRT400N_GPIO_LED_POWER 1
+#define WRT400N_GPIO_LED_WLAN 0
+
+#define WRT400N_GPIO_BTN_RESET 8
+#define WRT400N_GPIO_BTN_WLSEC 3
+
+#define WRT400N_BUTTONS_POLL_INTERVAL 20
+
+#ifdef CONFIG_MTD_PARTITIONS
+static struct mtd_partition wrt400n_partitions[] = {
+ {
+ .name = "uboot",
+ .offset = 0,
+ .size = 0x030000,
+ .mask_flags = MTD_WRITEABLE,
+ } , {
+ .name = "env",
+ .offset = 0x030000,
+ .size = 0x010000,
+ } , {
+ .name = "linux",
+ .offset = 0x040000,
+ .size = 0x140000,
+ } , {
+ .name = "rootfs",
+ .offset = 0x180000,
+ .size = 0x630000,
+ } , {
+ .name = "nvram",
+ .offset = 0x7b0000,
+ .size = 0x010000,
+ } , {
+ .name = "factory",
+ .offset = 0x7c0000,
+ .size = 0x010000,
+ } , {
+ .name = "language",
+ .offset = 0x7d0000,
+ .size = 0x020000,
+ } , {
+ .name = "caldata",
+ .offset = 0x7f0000,
+ .size = 0x010000,
+ }
+};
+#endif /* CONFIG_MTD_PARTITIONS */
+
+static struct flash_platform_data wrt400n_flash_data = {
+#ifdef CONFIG_MTD_PARTITIONS
+ .parts = wrt400n_partitions,
+ .nr_parts = ARRAY_SIZE(wrt400n_partitions),
+#endif
+};
+
+static struct spi_board_info wrt400n_spi_info[] = {
+ {
+ .bus_num = 0,
+ .chip_select = 0,
+ .max_speed_hz = 25000000,
+ .modalias = "m25p80",
+ .platform_data = &wrt400n_flash_data,
+ }
+};
+
+static struct gpio_led wrt400n_leds_gpio[] __initdata = {
+ {
+ .name = "wrt400n:green:status",
+ .gpio = WRT400N_GPIO_LED_GREEN,
+ .active_low = 1,
+ }, {
+ .name = "wrt400n:amber:aoss",
+ .gpio = WRT400N_GPIO_LED_ORANGE,
+ .active_low = 1,
+ }, {
+ .name = "wrt400n:green:wlan",
+ .gpio = WRT400N_GPIO_LED_WLAN,
+ .active_low = 1,
+ }, {
+ .name = "wrt400n:green:power",
+ .gpio = WRT400N_GPIO_LED_POWER,
+ .active_low = 1,
+ }
+};
+
+static struct gpio_button wrt400n_gpio_buttons[] __initdata = {
+ {
+ .desc = "reset",
+ .type = EV_KEY,
+ .code = BTN_0,
+ .threshold = 5,
+ .gpio = WRT400N_GPIO_BTN_RESET,
+ .active_low = 1,
+ } , {
+ .desc = "wlsec",
+ .type = EV_KEY,
+ .code = BTN_1,
+ .threshold = 5,
+ .gpio = WRT400N_GPIO_BTN_WLSEC,
+ .active_low = 1,
+ }
+};
+
+static void __init wrt400n_setup(void)
+{
+ ar71xx_add_device_mdio(0x0);
+
+ ar71xx_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RMII;
+ ar71xx_eth0_data.phy_mask = 0xf;
+ ar71xx_eth0_data.speed = SPEED_100;
+ ar71xx_eth0_data.duplex = DUPLEX_FULL;
+ ar71xx_eth0_data.has_ar8216 = 1;
+
+ ar71xx_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_RMII;
+ ar71xx_eth1_data.phy_mask = 0x10;
+
+ ar71xx_add_device_eth(0);
+ ar71xx_add_device_eth(1);
+
+ ar71xx_add_device_spi(NULL, wrt400n_spi_info,
+ ARRAY_SIZE(wrt400n_spi_info));
+
+ ar71xx_add_device_leds_gpio(-1, ARRAY_SIZE(wrt400n_leds_gpio),
+ wrt400n_leds_gpio);
+
+ ar71xx_add_device_gpio_buttons(-1, WRT400N_BUTTONS_POLL_INTERVAL,
+ ARRAY_SIZE(wrt400n_gpio_buttons),
+ wrt400n_gpio_buttons);
+
+ ar91xx_add_device_wmac();
+}
+
+MIPS_MACHINE(AR71XX_MACH_WRT400N, "Linksys WRT400N", wrt400n_setup);
diff -urN target.old/linux/ar71xx/files/arch/mips/ar71xx/Makefile target/linux/ar71xx/files/arch/mips/ar71xx/Makefile
--- target.old/linux/ar71xx/files/arch/mips/ar71xx/Makefile 2009-04-22 12:12:15.000000000 -0400
+++ target/linux/ar71xx/files/arch/mips/ar71xx/Makefile 2009-04-22 15:21:49.000000000 -0400
@@ -23,3 +23,4 @@
obj-$(CONFIG_AR71XX_MACH_UBNT) += mach-ubnt.o
obj-$(CONFIG_AR71XX_MACH_WNR2000) += mach-wnr2000.o
obj-$(CONFIG_AR71XX_MACH_WP543) += mach-wp543.o
+obj-$(CONFIG_AR71XX_MACH_WRT400N) += mach-wrt400n.o
diff -urN target.old/linux/ar71xx/files/arch/mips/ar71xx/prom.c target/linux/ar71xx/files/arch/mips/ar71xx/prom.c
--- target.old/linux/ar71xx/files/arch/mips/ar71xx/prom.c 2009-04-22 12:12:15.000000000 -0400
+++ target/linux/ar71xx/files/arch/mips/ar71xx/prom.c 2009-04-22 15:44:07.000000000 -0400
@@ -78,6 +78,9 @@
.name = "WNR2000",
.mach_type = AR71XX_MACH_WNR2000,
}, {
+ .name = "WRT400N",
+ .mach_type = AR71XX_MACH_WRT400N,
+ }, {
.name = "PB42",
.mach_type = AR71XX_MACH_PB42,
}, {
diff -urN target.old/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
--- target.old/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h 2009-04-22 12:12:15.000000000 -0400
+++ target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h 2009-04-23 09:39:44.000000000 -0400
@@ -130,6 +130,7 @@
#define AR71XX_MACH_TL_WR941ND 16 /* TP-LINK TL-WR941ND */
#define AR71XX_MACH_UBNT_RSPRO 17 /* Ubiquiti RouterStation Pro */
#define AR71XX_MACH_AP81 18 /* Atheros AP81 */
+#define AR71XX_MACH_WRT400N 19 /* Linksys WRT400N */
/*
* PLL block
diff -urN target.old/linux/ar71xx/files/drivers/net/ag71xx/Kconfig target/linux/ar71xx/files/drivers/net/ag71xx/Kconfig
--- target.old/linux/ar71xx/files/drivers/net/ag71xx/Kconfig 2009-04-22 12:12:15.000000000 -0400
+++ target/linux/ar71xx/files/drivers/net/ag71xx/Kconfig 2009-04-23 10:49:42.000000000 -0400
@@ -17,7 +17,7 @@
bool "special support for the Atheros AR8216 switch"
depends on AG71XX
default n
- default y if AR71XX_MACH_WNR2000 || AR71XX_MACH_MZK_W04NU
+ default y if AR71XX_MACH_WNR2000 || AR71XX_MACH_MZK_W04NU || AR71XX_MACH_WRT400N
help
Say 'y' here if you want to enable special support for the
Atheros AR8216 switch found on some boards.