qualcommax: ipq50xx: add support for Linksys MX2000 and MX5500

Add support for Linksys MX2000 (Atlas 6) and MX5500 (Atlas 6 Pro).
These devices are completely identical except for the secondary wifi
chip used for 5Ghz: QCN6102 is used on MX2000 while QCN9024 is used
on MX5500

Speficiations:
* SoC: Qualcomm IPQ5018 (64-bit dual-core ARM Cortex-A53 @ 1.0Ghz)
* Memory: Winbond W634GU6NB-11 (512 MiB DDR3-933)
* Serial Port: 3v3 TTL 115200n8
* Wi-Fi: IPQ5018 (2x2 2.4 Ghz 802.11b/g/n/ax)
* Wi-Fi: MX2000: QCN6102 (2x2:2 5 Ghz 802.11an/ac/ax)
         MX5500: QCN9024 (4x4:4 5 Ghz 802.11an/ac/ax)
* Ethernet: IPQ5018 integrated virtual switch connected to an external
            QCA8337 switch (4 Ports 10/100/1000 GBASE-T)
* Flash: Macronix MX35UF2GE4AD (256 MiB)
* LEDs: 1x multi-color PWM LED
* Buttons: 1x WPS (GPIO 27 Active Low)
           1x Reset (GPIO 28 Acive Low)

Flash instructions (in case of MX2000, else replace with MX5500 images):
1. On OEM firmware, login to the device (typically at http://192.168.1.1) and click 'CA'
in the bottom right corner -> Connectivity -> Manual Upgrade. Alternatively, browse to
http://<router IP>/fwupdate.html.
Upgrade firmware using openwrt-qualcommax-ipq50xx-linksys_mx2000-squashfs-factory.bin image.
Optionally install on second partition, after first boot check actual partition:
fw_printenv -n boot_part
and install firmware on second partition using command in case of 2:
mtd -r -e kernel -n write openwrt-qualcommax-ipq50xx-linksys_mx2000-squashfs-factory.bin kernel
and in case of 1:
mtd -r -e alt_kernel -n write openwrt-qualcommax-ipq50xx-linksys_mx2000-squashfs-factory.bin alt_kernel
2. Installation using serial connection from OEM firmware (default login: root, password: admin):
fw_printenv -n boot_part
In case of 2:
flash_erase /dev/mtd12 0 0
nandwrite -p /dev/mtd12 openwrt-qualcommax-ipq50xx-linksys_mx2000-squashfs-factory.bin
or in case of 1:
flash_erase /dev/mtd14 0 0
nandwrite -p /dev/mtd14 openwrt-qualcommax-ipq50xx-linksys_mx2000-squashfs-factory.bin
After first boot install firmware on second partition:
mtd -r -e kernel -n write openwrt-qualcommax-ipq50xx-linksys_mx2000-squashfs-factory.bin kernel
or:
mtd -r -e alt_kernel -n write openwrt-qualcommax-ipq50xx-linksys_mx2000-squashfs-factory.bin alt_kernel
3. Back to the OEM firmware.
Download firmware from OEM website:
MX2000: https://support.linksys.com/kb/article/585-en/
MX5500: https://support.linksys.com/kb/article/587-en/
From serial or SSH:
fw_printenv boot_part
in case of 1:
mtd -r -e alt_kernel -n write FW_MX2000_1.1.7.210469_prod.img alt_kernel
else in case of 2:
mtd -r -e kernel -n write FW_MX2000_1.1.7.210469_prod.img kernel

Signed-off-by: George Moussalem <george.moussalem@outlook.com>

package/base-files/files/sbin/sysupgrade

@@ -20,6 +20,7 @@ CONF_IMAGE=
 CONF_BACKUP_LIST=0
 CONF_BACKUP=
 CONF_RESTORE=
+CURR_PARTITION=0
 NEED_IMAGE=
 HELP=0
 TEST=0
@@ -50,6 +51,7 @@ while [ -n "$1" ]; do
 		-r|--restore-backup) CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
 		-l|--list-backup) CONF_BACKUP_LIST=1;;
 		-f) CONF_IMAGE="$2"; shift;;
+		-s) CURR_PARTITION=1;;
 		-F|--force) export FORCE=1;;
 		-T|--test) TEST=1;;
 		-h|--help) HELP=1; break;;
@@ -79,6 +81,7 @@ upgrade-option:
 	-p           do not attempt to restore the partition table after flash.
 	-k           include in backup a list of current installed packages at
 	             $INSTALLED_PACKAGES
+	-s           stay on current partition (for dual firmware devices)
 	-T | --test
 	             Verify image and config .tar.gz but do not actually flash.
 	-F | --force
@@ -416,6 +419,7 @@ else
 	json_add_string command "$COMMAND"
 	json_add_object options
 	json_add_int save_partitions "$SAVE_PARTITIONS"
+	[ $CURR_PARTITION -eq 1 ] && json_add_boolean curr_partition 1
 	json_close_object
 
 	ubus call system sysupgrade "$(json_dump)"

package/boot/uboot-envtools/files/qualcommax_ipq50xx

@@ -0,0 +1,22 @@
+[ -e /etc/config/ubootenv ] && exit 0
+
+touch /etc/config/ubootenv
+
+. /lib/uboot-envtools.sh
+. /lib/functions.sh
+
+board=$(board_name)
+
+case "$board" in
+linksys,mx2000|\
+linksys,mx5500)
+	idx="$(find_mtd_index u_env)"
+	[ -n "$idx" ] && \
+		ubootenv_add_uci_config "/dev/mtd$idx" "0x0" "0x40000" "0x20000" "2"
+	;;
+esac
+
+config_load ubootenv
+config_foreach ubootenv_add_app_config
+
+exit 0

package/firmware/ipq-wifi/Makefile

@@ -37,8 +37,10 @@ ALLWIFIBOARDS:= \
 	dynalink_dl-wrx36 \
 	edgecore_eap102 \
 	edimax_cax1800 \
+  linksys_mx2000 \
 	linksys_mx4200 \
 	linksys_mx5300 \
+  linksys_mx5500 \
 	linksys_mx8500 \
 	linksys_whw03 \
 	netgear_lbr20 \
@@ -168,8 +170,10 @@ $(eval $(call generate-ipq-wifi-package,compex_wpq873,Compex WPQ-873))
 $(eval $(call generate-ipq-wifi-package,dynalink_dl-wrx36,Dynalink DL-WRX36))
 $(eval $(call generate-ipq-wifi-package,edgecore_eap102,Edgecore EAP102))
 $(eval $(call generate-ipq-wifi-package,edimax_cax1800,Edimax CAX1800))
+$(eval $(call generate-ipq-wifi-package,linksys_mx2000,Linksys MX2000))
 $(eval $(call generate-ipq-wifi-package,linksys_mx4200,Linksys MX4200))
 $(eval $(call generate-ipq-wifi-package,linksys_mx5300,Linksys MX5300))
+$(eval $(call generate-ipq-wifi-package,linksys_mx5500,Linksys MX5500))
 $(eval $(call generate-ipq-wifi-package,linksys_mx8500,Linksys MX8500))
 $(eval $(call generate-ipq-wifi-package,linksys_whw03,Linksys WHW03))
 $(eval $(call generate-ipq-wifi-package,netgear_lbr20,Netgear LBR20))