ar71xx: add support for Cisco Meraki Z1 Cloud Managed Teleworker Gateway

This patch adds support for Cisco's Z1.
Detailed instructions for the flashing the device can
be found in the OpenWrt wiki:
<https://wiki.openwrt.org/toh/meraki/z1>

Signed-off-by: Chris Blake <chrisrblake93@gmail.com>

target/linux/ar71xx/base-files/etc/board.d/01_leds

@@ -813,6 +813,10 @@ wzr-hp-g300nh)
 	ucidef_set_led_usbdev "usb" "USB" "buffalo:blue:usb" "1-1"
 	;;
 
+z1)
+	ucidef_set_led_netdev "wlan1" "WLAN1" "z1:blue:tricolor0" "wlan1"
+	;;
+
 zbt-we1526)
 	ucidef_set_led_netdev "wan" "WAN" "zbt-we1526:green:wan" "eth1"
 	ucidef_set_led_switch "lan1" "LAN1" "zbt-we1526:green:lan1" "switch0" "0x10"

target/linux/ar71xx/base-files/etc/board.d/02_network

@@ -538,6 +538,12 @@ wndr3700)
 	ucidef_add_switch_port_attr "switch0" 5 led 2
 	;;
 
+z1)
+	ucidef_set_interfaces_lan_wan "eth0" "eth1"
+	ucidef_add_switch "switch0" \
+		"0@eth0" "1:lan:1" "2:lan:2" "3:lan:3" "4:lan:4" "5:wan"
+	;;
+
 *)
 	ucidef_set_interfaces_lan_wan "eth0" "eth1"
 	;;

target/linux/ar71xx/base-files/etc/diag.sh

@@ -426,6 +426,9 @@ get_status_led() {
 	wrt160nl)
 		status_led="wrt160nl:blue:wps"
 		;;
+	z1)
+		status_led="z1:green:tricolor0"
+		;;
 	zbt-we1526)
 		status_led="zbt-we1526:green:status"
 		;;

target/linux/ar71xx/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom

@@ -73,6 +73,16 @@ case "$FIRMWARE" in
 		ath9k_eeprom_extract "caldata" 4096 2048
 		ath9k_patch_firmware_mac $(mtd_get_mac_binary caldata 0)
 		;;
+	z1)
+		. /lib/upgrade/nand.sh
+
+		if [ -n "$(nand_find_volume ubi0 caldata)" ]; then
+			ath9k_ubi_eeprom_extract "caldata" 4096 2048
+		else
+			ath9k_eeprom_extract "origcaldata" 4096 2048
+		fi
+		ath9k_patch_firmware_mac $(macaddr_add $(mtd_get_mac_binary_ubi board-config 102) +2)
+		;;
 	*)
 		ath9k_eeprom_die "board $board is not supported yet"
 		;;
@@ -100,6 +110,16 @@ case "$FIRMWARE" in
 		ath9k_eeprom_extract "caldata" 20480 2048
 		ath9k_patch_firmware_mac $(mtd_get_mac_binary caldata 12)
 		;;
+	z1)
+		. /lib/upgrade/nand.sh
+
+		if [ -n "$(nand_find_volume ubi0 caldata)" ]; then
+			ath9k_ubi_eeprom_extract "caldata" 86016 4096
+		else
+			ath9k_eeprom_extract "origcaldata" 86016 4096
+		fi
+		ath9k_patch_firmware_mac $(macaddr_add $(mtd_get_mac_binary_ubi board-config 102) +3)
+		;;
 	*)
 		ath9k_eeprom_die "board $board is not supported yet"
 		;;

target/linux/ar71xx/base-files/etc/uci-defaults/03_network-switchX-migration

@@ -78,6 +78,7 @@ whr-hp-g300n|\
 whr-hp-gn|\
 wzr-hp-ag300h|\
 wzr-hp-g450h|\
+z1|\
 ew-dorin|\
 ew-dorin-router)
 	migrate_switch_name "eth0" "switch0"

target/linux/ar71xx/base-files/lib/ar71xx.sh

@@ -1134,6 +1134,9 @@ ar71xx_board_detect() {
 	*WHR-HP-G300N)
 		name="whr-hp-g300n"
 		;;
+	*Z1)
+		name="z1"
+		;;
 	*ZBT-WE1526)
 		name="zbt-we1526"
 		;;

target/linux/ar71xx/base-files/lib/preinit/05_set_iface_mac_ar71xx

@@ -49,6 +49,10 @@ preinit_set_mac_address() {
 		wrt160nl)
 			fetch_mac_from_mtd nvram lan_hwaddr wan_hwaddr
 			;;
+		z1)
+			mac_lan=$(mtd_get_mac_binary_ubi board-config 102)
+			[ -n "$mac_lan" ] && ifconfig eth0 hw ether "$mac_lan"
+			;;
 	esac
 }
 

target/linux/ar71xx/base-files/lib/upgrade/merakinand.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2015 Chris Blake <chrisrblake93@gmail.com>
+# Copyright (C) 2015-2016 Chris Blake <chrisrblake93@gmail.com>
 #
 # Custom upgrade script for Meraki NAND devices (ex. MR18)
 # Based on dir825.sh and stock nand functions
@@ -14,10 +14,13 @@ get_magic_at() {
 	dd bs=1 count=2 skip=$pos if=$mtddev 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
 }
 
-mr18_is_caldata_valid() {
+meraki_is_caldata_valid() {
-	local mtddev=$1
+	local board=$1
+	local mtddev=$2
 	local magic
 
+	case "$board" in
+	"mr18")
 		magic=$(get_magic_at $mtddev 4096)
 		[ "$magic" != "0202" ] && return 0
 
@@ -28,20 +31,35 @@ mr18_is_caldata_valid() {
 		[ "$magic" != "0202" ] && return 0
 
 		return 1
+		;;
+	"z1")
+		magic=$(get_magic_at $mtddev 4096)
+		[ "$magic" != "0202" ] && return 0
+
+		magic=$(get_magic_at $mtddev 86016)
+		[ "$magic" != "a55a" ] && return 0
+
+		return 1
+		;;
+	*)
+		return 1
+		;;
+	esac
 }
 
 merakinand_copy_caldata() {
 	local cal_src=$1
 	local cal_dst=$2
-	local ubidev=$( nand_find_ubi $CI_UBIPART )
+	local ubidev="$(nand_find_ubi $CI_UBIPART)"
 	local board_name="$(cat /tmp/sysinfo/board_name)"
 	local rootfs_size="$(ubinfo /dev/ubi0 -N rootfs_data | grep "Size" | awk '{ print $6 }')"
 
 	# Setup partitions using board name, in case of future platforms
 	case "$board_name" in
-	"mr18")
+	"mr18"|\
+	"z1")
 		# Src is MTD
-		mtd_src=$(find_mtd_chardev $cal_src)
+		mtd_src="$(find_mtd_chardev $cal_src)"
 		[ -n "$mtd_src" ] || {
 			echo "no mtd device found for partition $cal_src"
 			exit 1
@@ -56,12 +74,12 @@ merakinand_copy_caldata() {
 			exit 1
 		}
 
-		mr18_is_caldata_valid "$mtd_src" && {
+		meraki_is_caldata_valid "$board_name" "$mtd_src" && {
 			echo "no valid calibration data found in $cal_src"
 			exit 1
 		}
 
-		mr18_is_caldata_valid "/dev/$mtd_dst" && {
+		meraki_is_caldata_valid "$board_name" "/dev/$mtd_dst" && {
 			echo "Copying calibration data from $cal_src to $cal_dst..."
 			dd if="$mtd_src" of=/tmp/caldata.tmp 2>/dev/null
 			ubiupdatevol "/dev/$mtd_dst" /tmp/caldata.tmp
@@ -89,6 +107,11 @@ merakinand_do_kernel_check() {
 			echo "pass" && return 0
 		}
 		;;
+	"z1")
+		[ "$image_magic_word" == "4d495053" ] && {
+			echo "pass" && return 0
+		}
+		;;
 	esac
 
 	exit 1
@@ -102,7 +125,8 @@ merakinand_do_platform_check() {
 	local kernel_magic="$(merakinand_do_kernel_check $1 $2)"
 
 	case "$board_name" in
-	"mr18")
+	"mr18"|\
+	"z1")
 		[ "$control_length" = 0 -o "$file_type" != "squashfs" -o "$kernel_magic" != "pass" ] && {
 			echo "Invalid sysupgrade file for $board_name"
 			return 1
@@ -128,6 +152,11 @@ merakinand_do_upgrade() {
 		merakinand_copy_caldata "odm-caldata" "caldata"
 		nand_do_upgrade $1
 		;;
+	"z1")
+		# Check and create UBI caldata if it's invalid
+		merakinand_copy_caldata "origcaldata" "caldata"
+		nand_do_upgrade $1
+		;;
 	*)
 		echo "Unsupported device $board_name";
 		exit 1

target/linux/ar71xx/base-files/lib/upgrade/platform.sh

@@ -472,7 +472,8 @@ platform_check_image() {
 		}
 		return 0
 		;;
-	mr18)
+	mr18 | \
+	z1 )
 		merakinand_do_platform_check $board $1
 		return $?;
 		;;
@@ -543,7 +544,8 @@ platform_pre_upgrade() {
 	wndr4300 )
 		nand_do_upgrade "$1"
 		;;
-	mr18)
+	mr18 | \
+	z1 )
 		merakinand_do_upgrade "$1"
 		;;
 	esac

target/linux/ar71xx/config-4.4

@@ -201,6 +201,7 @@ CONFIG_ATH79_MACH_WZR_HP_AG300H=y
 CONFIG_ATH79_MACH_WZR_HP_G300NH=y
 CONFIG_ATH79_MACH_WZR_HP_G300NH2=y
 CONFIG_ATH79_MACH_WZR_HP_G450H=y
+CONFIG_ATH79_MACH_Z1=y
 CONFIG_ATH79_MACH_ZBT_WE1526=y
 CONFIG_ATH79_MACH_ZCN_1523H=y
 CONFIG_ATH79_NVRAM=y

target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt

@@ -1552,6 +1552,18 @@ config ATH79_MACH_MYNET_REXT
 	select ATH79_DEV_WMAC
 	select ATH79_NVRAM
 
+config ATH79_MACH_Z1
+	bool "Meraki Z1 board support"
+	select SOC_AR934X
+	select ATH79_DEV_AP9X_PCI if PCI
+	select ATH79_DEV_ETH
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_LEDS_GPIO
+	select ATH79_DEV_NFC
+	select ATH79_DEV_USB
+	select ATH79_DEV_WMAC
+	select LEDS_NU801
+
 config ATH79_MACH_ZBT_WE1526
 	bool "Zbtlink ZBT-WE1526 board support"
 	select SOC_QCA953X

target/linux/ar71xx/files/arch/mips/ath79/Makefile

@@ -205,6 +205,7 @@ obj-$(CONFIG_ATH79_MACH_WZR_HP_G300NH2)	+= mach-wzr-hp-g300nh2.o
 obj-$(CONFIG_ATH79_MACH_WZR_HP_AG300H)	+= mach-wzr-hp-ag300h.o
 obj-$(CONFIG_ATH79_MACH_WZR_HP_G450H)	+= mach-wzr-hp-g450h.o
 obj-$(CONFIG_ATH79_MACH_WZR_450HP2)	+= mach-wzr-450hp2.o
+obj-$(CONFIG_ATH79_MACH_Z1)		+= mach-z1.o
 obj-$(CONFIG_ATH79_MACH_ZBT_WE1526)	+= mach-zbt-we1526.o
 obj-$(CONFIG_ATH79_MACH_ZCN_1523H)	+= mach-zcn-1523h.o
 obj-$(CONFIG_ATH79_MACH_CARAMBOLA2)	+= mach-carambola2.o

target/linux/ar71xx/files/arch/mips/ath79/mach-z1.c

@@ -0,0 +1,164 @@
+/*
+ *  Cisco Meraki Z1 board support
+ *
+ *  Copyright (C) 2016 Chris Blake <chrisrblake93@gmail.com>
+ *  Copyright (C) 2016 Christian Lamparter <chunkeey@googlemail.com>
+ *
+ *  Based on Cisco Meraki GPL Release r23-20150601 Z1 Device Config
+ *
+ *  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/ath9k_platform.h>
+#include <linux/ar8216_platform.h>
+#include <linux/platform/ar934x_nfc.h>
+
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include <linux/leds-nu801.h>
+#include <linux/firmware.h>
+#include <linux/pci.h>
+
+#include "common.h"
+#include "dev-eth.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-nfc.h"
+#include "dev-usb.h"
+#include "dev-wmac.h"
+#include "dev-ap9x-pci.h"
+#include "machtypes.h"
+
+#define Z1_GPIO_LED_POWER_ORANGE	17
+
+#define Z1_GPIO_NU801_CKI		14
+#define Z1_GPIO_NU801_SDI		15
+
+#define Z1_GPIO_XLNA0			18
+#define Z1_GPIO_XLNA1			19
+
+#define Z1_GPIO_BTN_RESET		12
+#define Z1_KEYS_POLL_INTERVAL		20  /* msecs */
+#define Z1_KEYS_DEBOUNCE_INTERVAL	(3 * Z1_KEYS_POLL_INTERVAL)
+
+#define Z1_ETH_SWITCH_PHY		0
+
+static struct gpio_led Z1_leds_gpio[] __initdata = {
+	{
+		.name = "z1:orange:power",
+		.gpio = Z1_GPIO_LED_POWER_ORANGE,
+		.active_low  = 1,
+	},
+};
+
+static struct gpio_keys_button Z1_gpio_keys[] __initdata = {
+	{
+		.desc = "reset",
+		.type = EV_KEY,
+		.code = KEY_RESTART,
+		.debounce_interval = Z1_KEYS_DEBOUNCE_INTERVAL,
+		.gpio    = Z1_GPIO_BTN_RESET,
+		.active_low  = 1,
+	},
+};
+
+static struct led_nu801_template tricolor_led_template = {
+	.device_name = "z1",
+	.name = "tricolor",
+	.num_leds = 1,
+	.cki = Z1_GPIO_NU801_CKI,
+	.sdi = Z1_GPIO_NU801_SDI,
+	.lei = -1,
+	.ndelay = 500,
+	.init_brightness = {
+		LED_OFF,
+		LED_OFF,
+		LED_OFF,
+	},
+	.default_trigger = "none",
+};
+
+static struct led_nu801_platform_data tricolor_led_data = {
+	.num_controllers = 1,
+	.template = &tricolor_led_template,
+};
+
+static struct platform_device tricolor_leds = {
+	.name = "leds-nu801",
+	.id = -1,
+	.dev.platform_data = &tricolor_led_data,
+};
+
+static struct ar8327_pad_cfg z1_ar8327_pad0_cfg = {
+	.mode = AR8327_PAD_MAC_RGMII,
+	.txclk_delay_en = true,
+	.rxclk_delay_en = true,
+	.txclk_delay_sel = AR8327_CLK_DELAY_SEL1,
+	.rxclk_delay_sel = AR8327_CLK_DELAY_SEL2,
+};
+
+static struct ar8327_platform_data z1_ar8327_data = {
+	.pad0_cfg = &z1_ar8327_pad0_cfg,
+	.port0_cfg = {
+		.force_link = 1,
+		.speed = AR8327_PORT_SPEED_1000,
+		.duplex = 1,
+		.txpause = 1,
+		.rxpause = 1,
+	},
+};
+
+static struct mdio_board_info z1_mdio0_info[] = {
+	{
+		.bus_id = "ag71xx-mdio.0",
+		.phy_addr = Z1_ETH_SWITCH_PHY,
+		.platform_data = &z1_ar8327_data,
+	},
+};
+
+static void __init z1_setup(void)
+{
+	/* NAND */
+	ath79_nfc_set_ecc_mode(AR934X_NFC_ECC_SOFT_BCH);
+	ath79_register_nfc();
+
+	/* Eth Config */
+	ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_RGMII_GMAC0 |
+				   AR934X_ETH_CFG_SW_ONLY_MODE);
+
+	/* MDIO Interface */
+	ath79_register_mdio(1, 0x0);
+	ath79_register_mdio(0, 0x0);
+	mdiobus_register_board_info(z1_mdio0_info,
+				    ARRAY_SIZE(z1_mdio0_info));
+
+	/* GMAC0 is connected to an AR8327 switch */
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
+	ath79_eth0_data.phy_mask = BIT(Z1_ETH_SWITCH_PHY);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
+	ath79_eth0_pll_data.pll_1000 = 0x06000000;
+	ath79_register_eth(0);
+
+	/* XLNA */
+	ath79_wmac_set_ext_lna_gpio(0, Z1_GPIO_XLNA0);
+	ath79_wmac_set_ext_lna_gpio(1, Z1_GPIO_XLNA1);
+
+	/* LEDs and Buttons */
+	platform_device_register(&tricolor_leds);
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(Z1_leds_gpio),
+				 Z1_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, Z1_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(Z1_gpio_keys),
+					Z1_gpio_keys);
+
+	/* USB */
+	ath79_register_usb();
+
+	/* Wireless */
+	ath79_register_wmac_simple();
+	ap91_pci_init_simple();
+}
+MIPS_MACHINE(ATH79_MACH_Z1, "Z1", "Meraki Z1", z1_setup);

target/linux/ar71xx/files/arch/mips/ath79/machtypes.h

@@ -266,6 +266,7 @@ enum ath79_mach_type {
 	ATH79_MACH_WZR_HP_G300NH2,	/* Buffalo WZR-HP-G300NH2 */
 	ATH79_MACH_WZR_HP_G450H,	/* Buffalo WZR-HP-G450H */
 	ATH79_MACH_WZR_450HP2,		/* Buffalo WZR-450HP2 */
+	ATH79_MACH_Z1,			/* Cisco Meraki Z1 */
 	ATH79_MACH_ZBT_WE1526,		/* Zbtlink ZBT-WE1526 */
 	ATH79_MACH_ZCN_1523H_2,		/* Zcomax ZCN-1523H-2-xx */
 	ATH79_MACH_ZCN_1523H_5,		/* Zcomax ZCN-1523H-5-xx */

target/linux/ar71xx/image/nand.mk

@@ -20,6 +20,29 @@ define Device/mr18
 endef
 TARGET_DEVICES += mr18
 
+define Build/MerakiNAND-old
+	-$(STAGING_DIR_HOST)/bin/mkmerakifw-old \
+		-B $(BOARDNAME) -s \
+		-i $@ \
+		-o $@.new
+	@mv $@.new $@
+endef
+
+define Device/z1
+  DEVICE_TITLE := Meraki Z1
+  DEVICE_PACKAGES := kmod-usb-core kmod-usb2 kmod-ledtrig-usbdev kmod-spi-gpio kmod-ath9k kmod-owl-loader
+  BOARDNAME = Z1
+  BLOCKSIZE := 64k
+  CONSOLE = ttyS0,115200
+  MTDPARTS = ar934x-nfc:128K(loader1)ro,8064K(kernel),128K(loader2)ro,8064K(recovery),114560K(ubi),128K(origcaldata)ro
+  IMAGES := sysupgrade.tar
+  KERNEL := kernel-bin | patch-cmdline | MerakiNAND-old
+  KERNEL_INITRAMFS := kernel-bin | patch-cmdline | MerakiNAND-old
+  IMAGE/sysupgrade.tar := sysupgrade-tar
+endef
+
+TARGET_DEVICES += z1
+
 define LegacyDevice/R6100
   DEVICE_TITLE := NETGEAR R6100
   DEVICE_PACKAGES := kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-ledtrig-usbdev

target/linux/ar71xx/patches-4.4/818-MIPS-ath79-add-nu801-led-driver.patch

@@ -6,7 +6,7 @@
  
 +config LEDS_NU801
 +	tristate "LED driver for NU801 RGB LED"
-+	depends on LEDS_CLASS && ATH79_MACH_MR18
++	depends on LEDS_CLASS && (ATH79_MACH_MR18 || ATH79_MACH_Z1)
 +	help
 +	  This option enables support for NU801 RGB LED driver chips
 +	  accessed via GPIO.