[PATCH v2 4/4] gemini: Activate serial USB console on the DNS-313

[Linus Walleij]

This brings up a serial console on the USB device port of
the DNS-313 by:

- Activating the usbgadget feature
- Selecting the usbgadget-acm package
- Adding an inittab that opens a console at ttyGS0 which is
  the device side of ttyACMn of a connected host

Cc: Chuanhong Guo <gch981213 at gmail.com>
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
 target/linux/gemini/Makefile                            |  2 +-
 target/linux/gemini/base-files/etc/board.d/02_usbgadget | 11 +++++++++++
 target/linux/gemini/base-files/etc/inittab              |  4 ++++
 target/linux/gemini/image/Makefile                      |  2 +-
 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/target/linux/gemini/Makefile b/target/linux/gemini/Makefile
index b2869ff72edf2db557843a729a67ec97cf601b4b..ddfe67be2bb3ddf8a00b53d9729a743fa4b4b5c8 100644
--- a/target/linux/gemini/Makefile
+++ b/target/linux/gemini/Makefile
@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 ARCH:=arm
 BOARD:=gemini
 BOARDNAME:=Cortina Systems CS351x
-FEATURES:=squashfs pci rtc usb dt gpio display ext4 rootfs-part boot-part
+FEATURES:=squashfs pci rtc usb usbgadget dt gpio display ext4 rootfs-part boot-part
 CPU_TYPE:=fa526
 SUBTARGETS:=generic
 
diff --git a/target/linux/gemini/base-files/etc/board.d/02_usbgadget b/target/linux/gemini/base-files/etc/board.d/02_usbgadget
new file mode 100644
index 0000000000000000000000000000000000000000..7337e6638aeb4538ca580c5fa814b4ee76526ed2
--- /dev/null
+++ b/target/linux/gemini/base-files/etc/board.d/02_usbgadget
@@ -0,0 +1,11 @@
+. /lib/functions.sh
+
+case "$(board_name)" in
+dlink,dns-313)
+	uci set usbgadget. at preset[0].name="acm"
+	uci set usbgadget. at preset[0].UDC="69000000.usb"
+	uci commit usbgadget
+	;;
+esac
+
+exit 0
diff --git a/target/linux/gemini/base-files/etc/inittab b/target/linux/gemini/base-files/etc/inittab
new file mode 100644
index 0000000000000000000000000000000000000000..253036402d8330b708af896df214d975f0721bc1
--- /dev/null
+++ b/target/linux/gemini/base-files/etc/inittab
@@ -0,0 +1,4 @@
+::sysinit:/etc/init.d/rcS S boot
+::shutdown:/etc/init.d/rcS K shutdown
+::askconsole:/usr/libexec/login.sh
+ttyGS0::askfirst:/usr/libexec/login.sh
diff --git a/target/linux/gemini/image/Makefile b/target/linux/gemini/image/Makefile
index 389c8f8c442af8323de57c3f22b287716af88dfd..c5d09e7120b47cab08a0d479ef2c6eb48ac4a783 100644
--- a/target/linux/gemini/image/Makefile
+++ b/target/linux/gemini/image/Makefile
@@ -170,7 +170,7 @@ define Device/dlink_dns-313
 	DEVICE_VENDOR := D-Link
 	DEVICE_MODEL := DNS-313 1-Bay Network Storage Enclosure
 	DEVICE_DTS := gemini-dlink-dns-313
-	DEVICE_PACKAGES := $(GEMINI_NAS_PACKAGES)
+	DEVICE_PACKAGES := $(GEMINI_NAS_PACKAGES) usbgadget-acm
 	BLOCKSIZE := 1k
 	FILESYSTEMS := ext4
 	IMAGES := factory.bin.gz

-- 
2.49.0