rtl838x: add new architecture

This adds support for the RTL838x Architecture.
SoCs of this type are used in managed and un-managed Switches and Routers
with 8-28 ports. Drivers are provided for SoC initialization, GPIOs, Flash,
Ethernet including a DSA switch driver and internal and external PHYs used
with these switches.

Supported SoCs:

	RTL8380M
	RTL8381M
	RTL8382M

The kernel will also boot on the following RTL839x SoCs, however driver
support apart from spi-nor is missing:

	RTL8390
	RTL8391
	RTL8393

The following PHYs are supported:

	RTL8214FC (Quad QSGMII multiplexing GMAC and SFP port)
	RTL8218B internal: internal PHY of the RTL838x chips
	RTL8318b external (QSGMII 8-port GMAC phy)
	RTL8382M SerDes for 2 SFP ports
	Initialization sequences for the PHYs are provided in the form of
	firmware files.

Flash driver supports 3 / 4 byte access

DSA switch driver supports VLANs, port isolation, STP and port mirroring.

The ALLNET ALL-SG8208M is supported as Proof of Concept:

	RTL8382M SoC
	1 MIPS 4KEc core @ 500MHz
	8 Internal PHYs (RTL8218B)
	128MB DRAM (Nanya NT5TU128MB)
	16MB NOR Flash (MXIC 25L128)
	8 GBEthernet ports with one green status LED each (SoC controlled)
	1 Power LED (not configurable)
	1 SYS LED (configurable)
	1 On-Off switch (not configurable)
	1 Reset button at the right behind right air-vent (not configurable)
	1 Reset button on front panel (configurable)
	12V 1A barrel connector
	1 serial header with populated standard pin connector and with markings
	  GND TX RX Vcc(3.3V), connection properties: 115200 8N1

To install, upload the sysupgrade image to the OEM webpage.

Signed-off-by: Birger Koblitz <git@birger-koblitz.de>

3 files changed, 105 insertions, 0 deletions

diff --git a/target/linux/rtl838x/base-files/etc/board.d/01_leds b/target/linux/rtl838x/base-files/etc/board.d/01_leds
new file mode 100755
index 0000000000..7991b832f6
--- /dev/null
+++ b/target/linux/rtl838x/base-files/etc/board.d/01_leds
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+. /lib/functions/uci-defaults.sh
+
+board=$(board_name)
+boardname="${board##*,}"
+
+board_config_update
+
+case $board in
+esac
+
+board_config_flush
+
+exit 0
diff --git a/target/linux/rtl838x/base-files/etc/board.d/02_network b/target/linux/rtl838x/base-files/etc/board.d/02_network
new file mode 100755
index 0000000000..a79869d8c3
--- /dev/null
+++ b/target/linux/rtl838x/base-files/etc/board.d/02_network
@@ -0,0 +1,87 @@
+#!/bin/sh
+
+. /lib/functions.sh
+. /lib/functions/uci-defaults.sh
+. /lib/functions/system.sh
+
+rtl838x_setup_switch()
+{
+	local switchid net portid master device lan_role lan_list
+
+	json_select_object switch
+	# Find slave ports
+	for net in $(ls -d /sys/class/net/*); do
+		switchid=$(cat $net/phys_switch_id 2>/dev/null)
+		[ -z "$switchid" ] && continue
+		device=$(basename $net)
+		portid=$(cat $net/phys_port_name)
+		lan_role="$lan_role ${portid##p}"
+		lan_list="$lan_list $device"
+		json_select_object "switch$((switchid))"
+			json_add_boolean enable 1
+			json_add_boolean reset 0
+			json_add_boolean dsa 1
+			json_select_array ports
+				json_add_object
+					json_add_int num "${portid##p}"
+					json_add_string role "lan"
+					json_add_string device "$device"
+				json_close_object
+			json_select ..
+		json_select ..
+	done
+	# Add switch master device
+	for net in $(ls -d /sys/class/net/*/dsa); do
+		master=$(dirname $net)
+		device=$(basename $master)
+		portid=$(cat $master/phys_port_name)
+		lan_role="$lan_role ${portid##p}"
+		json_select_object "switch$((switchid))"
+			json_select_array ports
+				json_add_object
+					json_add_int num "${portid##p}"
+					json_add_string device "$device"
+					json_add_boolean need_tag 0
+					json_add_boolean want_untag 0
+					json_add_boolean master 1
+				json_close_object
+			json_select ..
+			json_select_array roles
+				json_add_object
+					json_add_string role "lan"
+					lan_role=$(echo $lan_role | xargs -n1 | sort -n | xargs)
+					json_add_string ports "$lan_role"
+				json_close_object
+			json_select ..
+		json_select ..
+	done
+	json_select ..
+	lan_list=$(echo $lan_list | xargs -n1 | sort -V | xargs)
+	ucidef_set_interface_lan "$lan_list"
+}
+
+rtl838x_setup_macs()
+{
+	local board="$1"
+	local lan_mac
+	local wan_mac
+	local label_mac
+
+	case $board in
+	allnet,all-sg8208m)
+		lan_mac=$(mtd_get_mac_ascii u-boot-env ethaddr)
+		label_mac=$lan_mac
+	esac
+
+	[ -n "$lan_mac" ] && ucidef_set_interface_macaddr "lan" $lan_mac
+	[ -n "$wan_mac" ] && ucidef_set_interface_macaddr "wan" $wan_mac
+	[ -n "$label_mac" ] && ucidef_set_label_macaddr $label_mac
+}
+
+board_config_update
+board=$(board_name)
+rtl838x_setup_switch
+rtl838x_setup_macs $board
+board_config_flush
+
+exit 0
diff --git a/target/linux/rtl838x/base-files/etc/inittab b/target/linux/rtl838x/base-files/etc/inittab
new file mode 100644
index 0000000000..9820e7144b
--- /dev/null
+++ b/target/linux/rtl838x/base-files/etc/inittab
@@ -0,0 +1,3 @@
+::sysinit:/etc/init.d/rcS S boot
+::shutdown:/etc/init.d/rcS K shutdown
+::askconsole:/usr/libexec/login.sh