ramips: get MAC addr from the encrypted partition (WG4хх223)

This commit resolves #10062. Adds decryption of the Arcadyan WG4xx223
configuration partition (board_data)to get base MAC address from it.
As a result, after this change the hack with saving MAC addressees to
u-boot-env before installation of OpenWrt is no longer necessary.

This is necessary for the following devices:
- Beeline Smartbox Flash (Arcadyan WG443223)
- MTS WG430223 (Arcadyan WG430223)

Example:
+----------------+-------------------+------------------------+
|                |    MTS WG430223   | Beeline Smartbox Flash |
+----------------+-------------------+------------------------+
| base mac (mtd) | A4:xx:xx:51:xx:F4 | 30:xx:xx:51:xx:06      |
| label          | A4:xx:xx:51:xx:F4 | 30:xx:xx:51:xx:09      |
| LAN            | A4:xx:xx:51:xx:F6 | 30:xx:xx:51:xx:09      |
| WAN            | A4:xx:xx:51:xx:F4 | 30:xx:xx:51:xx:06      |
| WLAN_2g        | A4:xx:xx:51:xx:F5 | 30:xx:xx:51:xx:07      |
| WLAN_5g        | A6:xx:xx:21:xx:F5 | 32:xx:xx:41:xx:07      |
+----------------+-------------------+------------------------+

Collected statistic shows that the 2-4th bits of the 7th byte of the
WLAN_5g MAC are the constant (see #10062 for more details):
- Beeline Smartbox Flash - 100
- MTS WG430223 - 010

Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>

3 files changed, 26 insertions, 13 deletions

diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 96ae2765b9..c3a63fa934 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -311,7 +311,7 @@ define Device/beeline_smartbox-flash
   IMAGE/factory.trx := append-kernel | append-ubi | check-size
   IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
   DEVICE_PACKAGES := kmod-usb3 kmod-mt7615e kmod-mt7615-firmware \
-	uboot-envtools
+	uboot-envtools uencrypt
 endef
 TARGET_DEVICES += beeline_smartbox-flash
 
@@ -1327,7 +1327,7 @@ define Device/mts_wg430223
   IMAGES += factory.trx
   IMAGE/factory.trx := append-kernel | append-ubi | check-size
   IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
-  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7615-firmware uboot-envtools
+  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7615-firmware uboot-envtools uencrypt
 endef
 TARGET_DEVICES += mts_wg430223
 
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index 7211422364..af493789ba 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -138,11 +138,10 @@ ramips_setup_macs()
 		wan_mac=$(mtd_get_mac_ascii u-boot-env et1macaddr)
 		label_mac=$(mtd_get_mac_binary factory 0x4)
 		;;
-	beeline,smartbox-flash|\
-	mts,wg430223)
-		lan_mac=$(mtd_get_mac_ascii u-boot-env eth2macaddr)
-		wan_mac=$(mtd_get_mac_ascii u-boot-env eth3macaddr)
-		label_mac=$lan_mac
+	beeline,smartbox-flash)
+		wan_mac=$(mtd_get_mac_encrypted_arcadyan "board_data")
+		label_mac=$(macaddr_add "$wan_mac" 3)
+		lan_mac=$label_mac
 		;;
 	buffalo,wsr-1166dhp)
 		local index="$(find_mtd_index "board_data")"
@@ -212,6 +211,11 @@ ramips_setup_macs()
 		wan_mac=$label_mac
 		lan_mac=$(macaddr_add $label_mac 1)
 		;;
+	mts,wg430223)
+		wan_mac=$(mtd_get_mac_encrypted_arcadyan "board_data")
+		label_mac=$wan_mac
+		lan_mac=$(macaddr_add "$wan_mac" 2)
+		;;
 	netgear,wax202)
 		lan_mac=$(mtd_get_mac_ascii Config mac)
 		wan_mac=$(macaddr_add "$lan_mac" 1)
diff --git a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
index 0ace1933e3..d1ce370cad 100644
--- a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
+++ b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
@@ -10,12 +10,13 @@ PHYNBR=${DEVPATH##*/phy}
 board=$(board_name)
 
 case "$board" in
-	beeline,smartbox-flash|\
-	mts,wg430223)
-		hw_mac_addr_ra0="$(mtd_get_mac_ascii u-boot-env ra0macaddr)"
-		hw_mac_addr_rax0="$(mtd_get_mac_ascii u-boot-env rax0macaddr)"
-		[ "$PHYNBR" = "0" ] && echo -n $hw_mac_addr_ra0 > /sys${DEVPATH}/macaddress
-		[ "$PHYNBR" = "1" ] && echo -n $hw_mac_addr_rax0 > /sys${DEVPATH}/macaddress
+	beeline,smartbox-flash)
+		hw_mac_addr=$(macaddr_add $(mtd_get_mac_encrypted_arcadyan "board_data") 1)
+		[ "$PHYNBR" = "0" ] && echo -n "$hw_mac_addr" > /sys${DEVPATH}/macaddress
+		hw_mac_addr=$(macaddr_setbit   $hw_mac_addr 26)
+		hw_mac_addr=$(macaddr_unsetbit $hw_mac_addr 27)
+		hw_mac_addr=$(macaddr_unsetbit $hw_mac_addr 28)
+		[ "$PHYNBR" = "1" ] && macaddr_setbit_la $hw_mac_addr > /sys${DEVPATH}/macaddress
 		;;
 	cudy,x6)
 		hw_mac_addr="$(mtd_get_mac_binary factory 0x4)"
@@ -88,6 +89,14 @@ case "$board" in
 		[ "$PHYNBR" = "0" ] && macaddr_add $hw_mac_addr 2 > /sys${DEVPATH}/macaddress
 		[ "$PHYNBR" = "1" ] && macaddr_add $hw_mac_addr 3 > /sys${DEVPATH}/macaddress
 		;;
+	mts,wg430223)
+		hw_mac_addr=$(macaddr_add $(mtd_get_mac_encrypted_arcadyan "board_data") 1)
+		[ "$PHYNBR" = "0" ] && echo -n "$hw_mac_addr" > /sys${DEVPATH}/macaddress
+		hw_mac_addr=$(macaddr_unsetbit $hw_mac_addr 26)
+		hw_mac_addr=$(macaddr_setbit   $hw_mac_addr 27)
+		hw_mac_addr=$(macaddr_unsetbit $hw_mac_addr 28)
+		[ "$PHYNBR" = "1" ] && macaddr_setbit_la $hw_mac_addr > /sys${DEVPATH}/macaddress
+		;;
 	oraybox,x3a)
 		if [ "$PHYNBR" = "1" ]; then
 			hw_mac_addr="$(mtd_get_mac_binary factory 0x4)"