abox_edge: Add ConfigFS support for ADB gadget function.brillo-m9-release

Add support for ConfigFS ADB function:
1. Add specific usb init script to configure ADB function.
2. Add sepolicy for ConfigFS.
This also fix the USB issue in Moblab VM.

BUG=26147310

Change-Id: I30dcbadb318ec839ea5f22a9ff36d74f8eb381c3

7 files changed, 64 insertions, 0 deletions

diff --git a/soc/iap140/hal_modules.mk b/soc/iap140/hal_modules.mk
index 91a10e4..91a10e4 100755..100644
--- a/soc/iap140/hal_modules.mk
+++ b/soc/iap140/hal_modules.mk
diff --git a/soc/iap140/init.iap140.rc b/soc/iap140/init.iap140.rc
index aef79a2..4eee595 100755..100644
--- a/soc/iap140/init.iap140.rc
+++ b/soc/iap140/init.iap140.rc
@@ -14,6 +14,8 @@
 # limitations under the License.
 #
 
+import init.iap140.usb.rc
+
 on init
     symlink /dev/block/platform/soc.2/d4200000.axi/d4281000.sdh/by-name /dev/block/by-name
     setprop ro.board.platform mrvl
diff --git a/soc/iap140/init.iap140.usb.rc b/soc/iap140/init.iap140.usb.rc
new file mode 100644
index 0000000..63a7951
--- /dev/null
+++ b/soc/iap140/init.iap140.usb.rc
@@ -0,0 +1,55 @@
+#
+# Copyright 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+on boot
+    mkdir /dev/usb-ffs 0770 shell shell
+    mkdir /dev/usb-ffs/adb 0770 shell shell
+    mount configfs none /config
+    mkdir /config/usb_gadget/g1 0770 shell shell
+    write /config/usb_gadget/g1/idVendor 0x18d1
+    write /config/usb_gadget/g1/bcdDevice 0x0223
+    write /config/usb_gadget/g1/bcdUSB 0x0200
+    mkdir /config/usb_gadget/g1/strings/0x409 0770
+    write /config/usb_gadget/g1/strings/0x409/serialnumber ${ro.serialno}
+    write /config/usb_gadget/g1/strings/0x409/manufacturer ${ro.product.manufacturer}
+    write /config/usb_gadget/g1/strings/0x409/product ${ro.product.model}
+    mkdir /config/usb_gadget/g1/functions/ffs.adb
+    mkdir /config/usb_gadget/g1/configs/b.1 0770 shell shell
+    mkdir /config/usb_gadget/g1/configs/b.1/strings/0x409 0770 shell shell
+    write /config/usb_gadget/g1/configs/b.1/MaxPower 500
+    write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration "adb"
+    symlink /config/usb_gadget/g1/functions/ffs.adb /config/usb_gadget/g1/configs/b.1/f1
+    mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000
+    setprop sys.usb.configfs 1
+    setprop sys.usb.controller "d4208100.udc"
+
+on property:sys.usb.config=none && property:sys.usb.configfs=1
+    write /config/usb_gadget/g1/UDC "none"
+    stop adbd
+    write /config/usb_gadget/g1/bDeviceClass 0
+    write /config/usb_gadget/g1/bDeviceSubClass 0
+    write /config/usb_gadget/g1/bDeviceProtocol 0
+    setprop sys.usb.state ${sys.usb.config}
+    setprop sys.usb.ffs.ready 0
+
+on property:sys.usb.config=adb && property:sys.usb.configfs=1
+    start adbd
+
+on property:sys.usb.ffs.ready=1 && property:sys.usb.config=adb && property:sys.usb.configfs=1
+    write /config/usb_gadget/g1/idProduct 0x4ee7
+    write /config/usb_gadget/g1/UDC ${sys.usb.controller}
+    setprop sys.usb.state ${sys.usb.config}
+
diff --git a/soc/iap140/sepolicy/file.te b/soc/iap140/sepolicy/file.te
new file mode 100644
index 0000000..485b666
--- /dev/null
+++ b/soc/iap140/sepolicy/file.te
@@ -0,0 +1,2 @@
+# Configfs /config
+type configfs, fs_type;
diff --git a/soc/iap140/sepolicy/genfs_contexts b/soc/iap140/sepolicy/genfs_contexts
new file mode 100644
index 0000000..50c7cd7
--- /dev/null
+++ b/soc/iap140/sepolicy/genfs_contexts
@@ -0,0 +1 @@
+genfscon configfs / u:object_r:configfs:s0
diff --git a/soc/iap140/sepolicy/init.te b/soc/iap140/sepolicy/init.te
new file mode 100644
index 0000000..03a4721
--- /dev/null
+++ b/soc/iap140/sepolicy/init.te
@@ -0,0 +1,3 @@
+# Allow init to create directories and symlinks in /config
+allow init configfs:dir create_dir_perms;
+allow init configfs:{ file lnk_file } create_file_perms;
diff --git a/soc/iap140/soc.mk b/soc/iap140/soc.mk
index 9a13881..63a5408 100644
--- a/soc/iap140/soc.mk
+++ b/soc/iap140/soc.mk
@@ -34,6 +34,7 @@ BOARD_KERNEL_CMDLINE := androidboot.console=ttyS1 console=ttyS1,115200 panic_deb
 PRODUCT_COPY_FILES += \
 	$(LOCAL_PATH)/init.iap140.rc:root/init.iap140.rc \
 	system/core/rootdir/init.usb.rc:root/init.usb.rc \
+	$(LOCAL_PATH)/init.iap140.usb.rc:root/init.iap140.usb.rc \
 	system/core/rootdir/ueventd.rc:root/ueventd.rc \
 	$(LOCAL_PATH)/ueventd.iap140.rc:root/ueventd.iap140.rc