bmips: add new target

This target has full device tree support, thus reducing the number of
patches needed for bcm63xx, in which there's a patch for every board.

The intention is to start with a minimal amount of downstream patches and
start upstreaming all of them.

Current status:
 - Enabling EHCI/OHCI on BCM6358 causes a kernel panic.
 - BCM63268 lacks Timer Clocks/Reset support.
 - No PCI/PCIe drivers.
 - No ethernet drivers.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

3 files changed, 89 insertions, 0 deletions

diff --git a/target/linux/bmips/base-files/etc/board.d/01_leds b/target/linux/bmips/base-files/etc/board.d/01_leds
new file mode 100755
index 0000000000..2f8d64a21e
--- /dev/null
+++ b/target/linux/bmips/base-files/etc/board.d/01_leds
@@ -0,0 +1,17 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+. /lib/functions/leds.sh
+. /lib/functions/uci-defaults.sh
+
+board_config_update
+
+led_usb="$(get_dt_led usb)"
+[ -n "$led_usb" ] && ucidef_set_led_usbdev "usb" "usb" "$led_usb" "1-1"
+
+led_usb2="$(get_dt_led usb2)"
+[ -n "$led_usb2" ] && ucidef_set_led_usbdev "usb2" "usb2" "$led_usb2" "2-1"
+
+board_config_flush
+
+exit 0
diff --git a/target/linux/bmips/base-files/etc/uci-defaults/09_fix_crc b/target/linux/bmips/base-files/etc/uci-defaults/09_fix_crc
new file mode 100644
index 0000000000..60227e7c34
--- /dev/null
+++ b/target/linux/bmips/base-files/etc/uci-defaults/09_fix_crc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+. /lib/functions.sh
+
+case "$(board_name)" in
+	comtrend,ar-5315u|\
+	comtrend,ar-5387un|\
+	comtrend,vr-3025u)
+		mtd fixtrx firmware
+		;;
+esac
+
+exit 0
diff --git a/target/linux/bmips/base-files/lib/upgrade/platform.sh b/target/linux/bmips/base-files/lib/upgrade/platform.sh
new file mode 100644
index 0000000000..972303743d
--- /dev/null
+++ b/target/linux/bmips/base-files/lib/upgrade/platform.sh
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+PART_NAME=firmware
+REQUIRE_IMAGE_METADATA=1
+
+platform_check_image() {
+	return 0
+}
+
+cfe_jffs2_nand_upgrade() {
+	local tar_file="$1"
+	local kernel_mtd="$(find_mtd_index $CI_KERNPART)"
+
+	if [ -z "$kernel_mtd" ]; then
+		echo "$CI_KERNPART partition not found"
+		return 1
+	fi
+
+	local board_dir=$(tar tf $tar_file | grep -m 1 '^sysupgrade-.*/$')
+	board_dir=${board_dir%/}
+
+	local kernel_length=$(tar xf $tar_file ${board_dir}/kernel -O | wc -c 2> /dev/null)
+	local rootfs_length=$(tar xf $tar_file ${board_dir}/root -O | wc -c 2> /dev/null)
+
+	if [ "$kernel_length" = 0 ]; then
+		echo "kernel cannot be empty"
+		return 1
+	fi
+
+	flash_erase -j /dev/mtd${kernel_mtd} 0 0
+	tar xf $tar_file ${board_dir}/kernel -O | nandwrite /dev/mtd${kernel_mtd} -
+
+	local rootfs_type="$(identify_tar "$tar_file" ${board_dir}/root)"
+
+	nand_upgrade_prepare_ubi "$rootfs_length" "$rootfs_type" "0" "0"
+
+	local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
+
+	local root_ubivol="$(nand_find_volume $ubidev $CI_ROOTPART)"
+	tar xf $tar_file ${board_dir}/root -O | \
+		ubiupdatevol /dev/$root_ubivol -s $rootfs_length -
+
+	nand_do_upgrade_success
+}
+
+platform_do_upgrade() {
+	case "$(board_name)" in
+		comtrend,ar-5315u|\
+		comtrend,ar-5387un|\
+		comtrend,vr-3025u|\
+		huawei,hg556a-b)
+			default_do_upgrade "$1"
+			;;
+		comtrend,vr-3032u|\
+		netgear,dgnd3700-v2)
+			cfe_jffs2_nand_upgrade "$1"
+			;;
+	esac
+}