Add fastboot mode to recovery
Add a fastboot mode to recovery that can be
entered with command line args or with the ui.
Add usb property triggers to switch between
fastboot and adb configurations.
Allow switching between fastboot and adb through
usb commands by opening a unix socket. adbd/fastbootd
writes to this socket, which interrupts the ui and
switches to the new mode.
Test: Use fastboot mode
Bug: 78793464
Change-Id: I7891bb84427ec734a21a872036629b95ab3fb13c
diff --git a/etc/init.rc b/etc/init.rc
index 3821eb6..9add249 100644
--- a/etc/init.rc
+++ b/etc/init.rc
@@ -6,6 +6,8 @@
start ueventd
+ setprop sys.usb.configfs 0
+
on init
export ANDROID_ROOT /system
export ANDROID_DATA /data
@@ -31,20 +33,6 @@
write /proc/sys/kernel/panic_on_oops 1
write /proc/sys/vm/max_map_count 1000000
-on fs
- write /sys/class/android_usb/android0/f_ffs/aliases adb
- mkdir /dev/usb-ffs 0770 shell shell
- mkdir /dev/usb-ffs/adb 0770 shell shell
- mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000
-
- write /sys/class/android_usb/android0/enable 0
- write /sys/class/android_usb/android0/idVendor 18D1
- write /sys/class/android_usb/android0/idProduct D001
- write /sys/class/android_usb/android0/functions adb
- write /sys/class/android_usb/android0/iManufacturer ${ro.product.manufacturer}
- write /sys/class/android_usb/android0/iProduct ${ro.product.model}
- write /sys/class/android_usb/android0/iSerial ${ro.serialno}
-
on boot
ifup lo
hostname localhost
@@ -86,6 +74,7 @@
seclabel u:r:charger:s0
service recovery /system/bin/recovery
+ socket recovery stream 422 system system
seclabel u:r:recovery:s0
service adbd /system/bin/adbd --root_seclabel=u:r:su:s0 --device_banner=recovery
@@ -93,13 +82,89 @@
socket adbd stream 660 system system
seclabel u:r:adbd:s0
-# Always start adbd on userdebug and eng builds
-on property:ro.debuggable=1
- write /sys/class/android_usb/android0/enable 1
- start adbd
+service fastbootd /system/bin/fastbootd
+ disabled
+ group system
+ seclabel u:r:fastbootd:s0
# Restart adbd so it can run as root
on property:service.adb.root=1
- write /sys/class/android_usb/android0/enable 0
restart adbd
+
+# Always start adbd on userdebug and eng builds
+on fs && property:ro.debuggable=1
+ setprop sys.usb.config adb
+
+on fs && property:sys.usb.configfs=1
+ mount configfs none /config
+ mkdir /config/usb_gadget/g1 0770 shell shell
+ write /config/usb_gadget/g1/idVendor 0x18D1
+ 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/functions/ffs.fastboot
+ mkdir /config/usb_gadget/g1/configs/b.1 0777 shell shell
+ mkdir /config/usb_gadget/g1/configs/b.1/strings/0x409 0770 shell shell
+
+on fs && property:sys.usb.configfs=0
+ write /sys/class/android_usb/android0/f_ffs/aliases adb,fastboot
+ write /sys/class/android_usb/android0/idVendor 18D1
+ write /sys/class/android_usb/android0/iManufacturer ${ro.product.manufacturer}
+ write /sys/class/android_usb/android0/iProduct ${ro.product.model}
+ write /sys/class/android_usb/android0/iSerial ${ro.serialno}
+
+on fs
+ mkdir /dev/usb-ffs 0775 shell shell
+ mkdir /dev/usb-ffs/adb 0770 shell shell
+ mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000
+ mkdir /dev/usb-ffs/fastboot 0770 system system
+ mount functionfs fastboot /dev/usb-ffs/fastboot rmode=0770,fmode=0660,uid=1000,gid=1000
+
+on property:sys.usb.config=adb
+ start adbd
+
+on property:sys.usb.config=fastboot
+ start fastbootd
+
+on property:sys.usb.config=none
+ stop adbd
+ stop fastbootd
+
+on property:sys.usb.config=none && property:sys.usb.configfs=0
+ write /sys/class/android_usb/android0/enable 0
+ setprop sys.usb.state ${sys.usb.config}
+
+on property:sys.usb.config=adb && property:sys.usb.configfs=0
+ write /sys/class/android_usb/android0/idProduct D001
+ write /sys/class/android_usb/android0/functions adb
write /sys/class/android_usb/android0/enable 1
+ setprop sys.usb.state ${sys.usb.config}
+
+on property:sys.usb.config=fastboot && property:sys.usb.configfs=0
+ write /sys/class/android_usb/android0/idProduct 4EE0
+ write /sys/class/android_usb/android0/functions fastboot
+ write /sys/class/android_usb/android0/enable 1
+ setprop sys.usb.state ${sys.usb.config}
+
+# Configfs triggers
+on property:sys.usb.config=none && property:sys.usb.configfs=1
+ write /config/usb_gadget/g1/UDC "none"
+ setprop sys.usb.ffs.ready 0
+ rm /config/usb_gadget/g1/configs/b.1/f1
+ setprop sys.usb.state ${sys.usb.config}
+
+on property:sys.usb.config=adb && property:sys.usb.ffs.ready=1 && property:sys.usb.configfs=1
+ write /config/usb_gadget/g1/idProduct 0xD001
+ 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
+ write /config/usb_gadget/g1/UDC ${sys.usb.controller}
+ setprop sys.usb.state ${sys.usb.config}
+
+on property:sys.usb.config=fastboot && property:sys.usb.ffs.ready=1 && property:sys.usb.configfs=1
+ write /config/usb_gadget/g1/idProduct 0x4EE0
+ write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration "fastboot"
+ symlink /config/usb_gadget/g1/functions/ffs.fastboot /config/usb_gadget/g1/configs/b.1/f1
+ write /config/usb_gadget/g1/UDC ${sys.usb.controller}
+ setprop sys.usb.state ${sys.usb.config}