ar71xx: improve support for TP-Link CPE510 v2

This fixes commit bae927c551fd ("ar71xx: add support for TP-LINK CPE510
V2.0") where the support for this device wasn't optimal.

Device support for the CPE510v2 so far has been a hack to enable
flashing with CPE510v1 images. Those even have different hardware (e.g.
additional ethernet port).

With this patch, we provide proper support for this device in ar71xx.

Installation:
- Flash factory image through stock firmware WEB UI or through TFTP
- To get to TFTP recovery just hold reset button while powering on
  for around 4-5 seconds and release.
- Rename factory image to recovery.bin
- Stock TFTP server IP: 192.168.0.100
- Stock device TFTP address: 192.168.0.254

Fixes: bae927c551fd ("ar71xx: add support for TP-LINK CPE510 V2.0")
Signed-off-by: Andrew Cameron <apcameron@softhome.net>
[Rebased onto revert commit, changed comments in mach-cpe510.c,
changed commit title and description, fixed eth0 MAC address,
removed eth1 initialization]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
[squashed revert, added fixes tag]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
(cherry picked from commit c79b796280fa5cd64bac663f9d5e5d9a737c30d6)
[added CPE510V2 entry to tplink-safeloader.c]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

7 files changed, 53 insertions, 21 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 8e49cb9fe2..fa8fb7a91e 100755
--- a/target/linux/ar71xx/base-files/etc/board.d/01_leds
+++ b/target/linux/ar71xx/base-files/etc/board.d/01_leds
@@ -255,6 +255,7 @@ cpe210|\
 cpe210-v2|\
 cpe210-v3|\
 cpe510|\
+cpe510-v2|\
 wbs210|\
 wbs510)
 	ucidef_set_rssimon "wlan0" "200000" "1"
@@ -265,7 +266,8 @@ wbs510)
 
 	case "$board" in
 	cpe210-v2|\
-	cpe210-v3)
+	cpe210-v3|\
+	cpe510-v2)
 		ucidef_set_led_netdev "lan" "LAN" "tp-link:green:lan0" "eth0"
 		;;
 	*)
diff --git a/target/linux/ar71xx/base-files/etc/board.d/02_network b/target/linux/ar71xx/base-files/etc/board.d/02_network
index 1fcfa43c4b..c1873c1653 100755
--- a/target/linux/ar71xx/base-files/etc/board.d/02_network
+++ b/target/linux/ar71xx/base-files/etc/board.d/02_network
@@ -76,6 +76,7 @@ ar71xx_setup_interfaces()
 	cf-e380ac-v2|\
 	cpe210-v2|\
 	cpe210-v3|\
+	cpe510-v2|\
 	dr342|\
 	eap120|\
 	eap300v2|\
diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index 3f76c32854..044ef4eae5 100755
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -763,14 +763,11 @@ ar71xx_board_detect() {
 		;;
 	*"CPE510/520")
 		name="cpe510"
+		tplink_pharos_board_detect "$(tplink_pharos_get_model_string | tr -d '\r')"
+		;;
+	*"CPE510 v2")
+		name="cpe510-v2"
 		tplink_pharos_board_detect "$(tplink_pharos_v2_get_model_string)"
-		case $AR71XX_MODEL in
-		'TP-Link CPE510 v2.0')
-			;;
-		*)
-			tplink_pharos_board_detect "$(tplink_pharos_get_model_string | tr -d '\r')"
-			;;
-		esac
 		;;
 	*"CPE830")
 		name="cpe830"
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index 91bffcb8c1..7467fb4613 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -586,6 +586,7 @@ platform_check_image() {
 		return $?
 		;;
 	cpe210|\
+	cpe510|\
 	eap120|\
 	wbs210|\
 	wbs510)
@@ -597,19 +598,9 @@ platform_check_image() {
 		tplink_pharos_check_image "$1" "01000000" "$(tplink_pharos_v2_get_model_string)" '\0\xff\r' && return 0
 		return 1
 		;;
-	cpe510)
-		local modelstr="$(tplink_pharos_v2_get_model_string)"
-		tplink_pharos_board_detect $modelstr
-		case $AR71XX_MODEL in
-		'TP-Link CPE510 v2.0')
-			tplink_pharos_check_image "$1" "7f454c46" "$modelstr" '\0\xff\r' && return 0
-			return 1
-			;;
-		*)
-			tplink_pharos_check_image "$1" "7f454c46" "$(tplink_pharos_get_model_string)" '' && return 0
-			return 1
-			;;
-		esac
+	cpe510-v2)
+		tplink_pharos_check_image "$1" "7f454c46" "$(tplink_pharos_v2_get_model_string)" '\0\xff\r' && return 0
+		return 1
 		;;
 	a40|\
 	a60|\
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
index 16efbc8802..49d9cf9bb5 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
@@ -230,6 +230,35 @@ static void __init cpe210_v2_setup(void)
 	ath79_register_wmac(ee, mac);
 }
 
+static void __init cpe510_v2_setup(void)
+{
+	u8 *mac = (u8 *) KSEG1ADDR(0x1f830008);
+	u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);
+
+	/* disable PHY_SWAP and PHY_ADDR_SWAP bits */
+	ath79_setup_ar933x_phy4_switch(false, false);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(cpe210_v2_leds_gpio),
+					cpe210_v2_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, CPE510_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(cpe510_gpio_keys),
+					cpe510_gpio_keys);
+
+	ath79_register_m25p80(NULL);
+	ath79_register_mdio(1, 0x0);
+
+	/* LAN port */
+	ath79_switch_data.phy4_mii_en = 1;
+	ath79_switch_data.phy_poll_mask = BIT(4);
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
+	ath79_eth0_data.phy_mask = BIT(4);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio1_device.dev;
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
+	ath79_register_eth(0);
+
+	ath79_register_wmac(ee, mac);
+}
+
 MIPS_MACHINE(ATH79_MACH_CPE210, "CPE210", "TP-LINK CPE210/220",
 	     cpe210_setup);
 
@@ -242,6 +271,9 @@ MIPS_MACHINE(ATH79_MACH_CPE210_V3, "CPE210V3", "TP-LINK CPE210 v3",
 MIPS_MACHINE(ATH79_MACH_CPE510, "CPE510", "TP-LINK CPE510/520",
 	     cpe510_setup);
 
+MIPS_MACHINE(ATH79_MACH_CPE510_V2, "CPE510V2", "TP-LINK CPE510 v2",
+	     cpe510_v2_setup);
+
 MIPS_MACHINE(ATH79_MACH_WBS210, "WBS210", "TP-LINK WBS210",
 	     wbs_setup);
 
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index 9722744a37..900b4ec87b 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -79,6 +79,7 @@ enum ath79_mach_type {
 	ATH79_MACH_CPE210_V3,			/* TP-LINK CPE210 v3 */
 	ATH79_MACH_CPE505N,			/* P&W CPE505N */
 	ATH79_MACH_CPE510,			/* TP-LINK CPE510 */
+	ATH79_MACH_CPE510_V2,			/* TP-LINK CPE510 v2 */
 	ATH79_MACH_CPE830,			/* YunCore CPE830 */
 	ATH79_MACH_CPE870,			/* YunCore CPE870 */
 	ATH79_MACH_CR3000,			/* PowerCloud Systems CR3000 */
diff --git a/target/linux/ar71xx/image/generic-tp-link.mk b/target/linux/ar71xx/image/generic-tp-link.mk
index e448e5123a..e9440bd786 100644
--- a/target/linux/ar71xx/image/generic-tp-link.mk
+++ b/target/linux/ar71xx/image/generic-tp-link.mk
@@ -177,6 +177,14 @@ define Device/cpe510-520-v1
 endef
 TARGET_DEVICES += cpe510-520-v1
 
+define Device/cpe510-v2
+  $(Device/cpe510-520-v1)
+  DEVICE_TITLE := TP-LINK CPE510 v2
+  BOARDNAME := CPE510V2
+  TPLINK_BOARD_ID := CPE510V2
+endef
+TARGET_DEVICES += cpe510-v2
+
 define Device/cpe210-220-v1
   $(Device/cpe510-520-v1)
   DEVICE_TITLE := TP-LINK CPE210/220 v1