brcm2708: add device detection and use it for network, leds and preinit

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

SVN-Revision: 47572

target/linux/brcm2708/base-files/lib/brcm2708.sh

@@ -0,0 +1,41 @@
+#!/bin/sh
+# Copyright (C) 2015 OpenWrt.org
+
+ifname=""
+
+brcm2708_detect() {
+	local board_name model
+
+	model=$(cat /proc/device-tree/model)
+	case "$model" in
+	"Raspberry Pi Model B Rev"*)
+		board_name="rpi-b"
+		;;
+	"Raspberry Pi Model B+ Rev"*)
+		board_name="rpi-b-plus"
+		;;
+	"Raspberry Pi Compute Module Rev"*)
+		board_name="rpi-cm"
+		;;
+	"Raspberry Pi 2 Model B Rev"*)
+		board_name="rpi-2-b"
+		;;
+	*)
+		board_name="unknown"
+		;;
+	esac
+
+	[ -e "/tmp/sysinfo" ] || mkdir -p "/tmp/sysinfo"
+
+	echo "$board_name" > /tmp/sysinfo/board_name
+	echo "$model" > /tmp/sysinfo/model
+}
+
+brcm2708_board_name() {
+	local name
+
+	[ -f /tmp/sysinfo/board_name ] && name=$(cat /tmp/sysinfo/board_name)
+	[ -n "$name" ] || name="unknown"
+
+	echo $name
+}

target/linux/brcm2708/base-files/lib/preinit/03_preinit_do_brcm2708.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+# Copyright (C) 2015 OpenWrt.org
+
+do_brcm2708() {
+	. /lib/brcm2708.sh
+
+	brcm2708_detect
+}
+
+boot_hook_add preinit_main do_brcm2708

target/linux/brcm2708/base-files/lib/preinit/05_set_preinit_iface_brcm2708

@@ -0,0 +1,18 @@
+#!/bin/sh
+#
+# Copyright (C) 2015 OpenWrt.org
+#
+
+. /lib/brcm2708.sh
+
+set_preinit_iface() {
+	case "$(brcm2708_board_name)" in
+	rpi-b |\
+	rpi-b-plus |\
+	rpi-2-b)
+		ifname=eth0
+		;;
+	esac
+}
+
+boot_hook_add preinit_main set_preinit_iface