ar71xx: add AVM FRITZ!WLAN Repeater 300E support

Specifications:
* SoC: AR7242 (Virian 400MHz)
* RAM: 64 MB DDR (W9751G6JB-25)
* Flash: 16MB SPI flash (S25FL129PIF)
* WiFi: AR9382 (2.4/5GHz) + 2x SE2595L
* LAN: 1x1000M (PEF7071V)

To install LEDE via EVA bootloader, a FTP connection need to be
established to 192.168.178.1 within the first seconds after power on:

  ftp> quote USER adam2
  ftp> quote PASS adam2
  ftp> binary
  ftp> debug
  ftp> passive
  ftp> quote MEDIA FLSH
  ftp> put lede-ar71xx-generic-fritz300e-squashfs-sysupgrade.bin mtd1

Signed-off-by: Mathias Kresin <dev@kresin.me>

6 files changed, 40 insertions, 0 deletions

diff --git a/target/linux/ar71xx/base-files/etc/board.d/01_leds b/target/linux/ar71xx/base-files/etc/board.d/01_leds
index 87f99ea9d8..d80efefc34 100755
--- a/target/linux/ar71xx/base-files/etc/board.d/01_leds
+++ b/target/linux/ar71xx/base-files/etc/board.d/01_leds
@@ -242,6 +242,16 @@ ens202ext)
 f9k1115v2)
 	ucidef_set_led_usbdev "usb2" "USB2" "belkin:green:usb2" "1-1"
 	;;
+fritz300e)
+	ucidef_set_led_netdev "lan" "LAN" "$board:green:lan" "eth0"
+	ucidef_set_led_wlan "wlan" "WLAN" "$board:green:wlan" "phy0tpt"
+	ucidef_set_rssimon "wlan0" "200000" "1"
+	ucidef_set_led_rssi "rssilow" "RSSILOW" "$board:green:rssi0" "wlan0" "1" "100"
+	ucidef_set_led_rssi "rssimediumlow" "RSSIMEDIUMLOW" "$board:green:rssi1" "wlan0" "20" "100"
+	ucidef_set_led_rssi "rssimedium" "RSSIMEDIUM" "$board:green:rssi2" "wlan0" "40" "100"
+	ucidef_set_led_rssi "rssimediumhigh" "RSSIMEDIUMHIGH" "$board:green:rssi3" "wlan0" "60" "100"
+	ucidef_set_led_rssi "rssihigh" "RSSIHIGH" "$board:green:rssi4" "wlan0" "80" "100"
+	;;
 rb-750)
 	ucidef_set_led_default "act" "act" "rb750:green:act" "1"
 	ucidef_set_led_netdev "port1" "port1" "rb750:green:port1" "eth1"
diff --git a/target/linux/ar71xx/base-files/etc/board.d/02_network b/target/linux/ar71xx/base-files/etc/board.d/02_network
index 80355d6160..9ff6dddd32 100755
--- a/target/linux/ar71xx/base-files/etc/board.d/02_network
+++ b/target/linux/ar71xx/base-files/etc/board.d/02_network
@@ -75,6 +75,7 @@ ar71xx_setup_interfaces()
 	eap300v2|\
 	eap7660d|\
 	el-mini|\
+	fritz300e|\
 	hiveap-121|\
 	loco-m-xw|\
 	mr12|\
@@ -518,6 +519,9 @@ ar71xx_setup_macs()
 		lan_mac=$(mtd_get_mac_binary caldata 0)
 		wan_mac=$(mtd_get_mac_binary caldata 6)
 		;;
+	fritz300e)
+		lan_mac=$(fritz_tffs -n maca -i $(find_mtd_part "tffs (1)"))
+		;;
 	tl-wr1043nd-v4)
 		wan_mac=$(mtd_get_mac_binary config 0x1017c)
 		;;
diff --git a/target/linux/ar71xx/base-files/etc/diag.sh b/target/linux/ar71xx/base-files/etc/diag.sh
index dce5d8e3cf..936a1148d0 100644
--- a/target/linux/ar71xx/base-files/etc/diag.sh
+++ b/target/linux/ar71xx/base-files/etc/diag.sh
@@ -54,6 +54,7 @@ get_status_led() {
 	archer-c25-v1|\
 	archer-c59-v1|\
 	archer-c60-v1|\
+	fritz300e|\
 	mr12|\
 	mr16|\
 	nbg6616|\
diff --git a/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom b/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
index 4db1b148a2..b4d7817569 100644
--- a/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
+++ b/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
@@ -40,6 +40,24 @@ ath9k_ubi_eeprom_extract() {
 		ath9k_eeprom_die "failed to extract from $ubi"
 }
 
+ath9k_eeprom_extract_reverse() {
+	local part=$1
+	local offset=$2
+	local count=$3
+	local mtd
+	local reversed
+	local caldata
+
+	mtd=$(find_mtd_chardev "$part")
+	reversed=$(hexdump -v -s $offset -n $count -e '/1 "%02x "' $mtd)
+
+	for byte in $reversed; do
+		caldata="\x${byte}${caldata}"
+	done
+
+	printf "%b" "$caldata" > /lib/firmware/$FIRMWARE
+}
+
 ath9k_patch_firmware_mac() {
 	local mac=$1
 
@@ -99,6 +117,9 @@ case "$FIRMWARE" in
 		ath9k_eeprom_extract "art" 20480 2048
 		ath9k_patch_firmware_mac $(macaddr_add $(mtd_get_mac_binary art 0) +2)
 		;;
+	fritz300e)
+		ath9k_eeprom_extract_reverse "urloader" 5441 1088
+		;;
 	mr18)
 		. /lib/upgrade/nand.sh
 
diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index a1abfa047d..ecc8dab36c 100755
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -640,6 +640,9 @@ ar71xx_board_detect() {
 	*"ESR900")
 		name="esr900"
 		;;
+	*"FRITZ!WLAN Repeater 300E")
+		name="fritz300e"
+		;;
 	*"GL AR150")
 		name="gl-ar150"
 		;;
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index 4ee467180d..60e41c862e 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -647,6 +647,7 @@ platform_check_image() {
 		return 0;
 		;;
 	# these boards use metadata images
+	fritz300e|\
 	rb-750-r2|\
 	rb-750up-r2|\
 	rb-941-2nd|\