RK3288 Android8.1 adds EC25

First get the so library provided by the supplier and put so under vendor\rockchip\common\phone\lib

Modify the corresponding phone.mk and move the so library to the specified location (move to system/lib below Android 7, move to vendor/lib after Android 8)

CUR_PATH := vendor/rockchip/common

#########################################################
#   3G Dongle SUPPORT
#########################################################
PRODUCT_COPY_FILES += \
    $(CUR_PATH)/phone/etc/ppp/ip-down:system/etc/ppp/ip-down \
    $(CUR_PATH)/phone/etc/ppp/ip-up:system/etc/ppp/ip-up \
    $(CUR_PATH)/phone/etc/ppp/ip-up:system/etc/ppp/ip-up-vpn \
    $(CUR_PATH)/phone/etc/ppp/call-pppd:system/etc/ppp/call-pppd \
    $(CUR_PATH)/phone/etc/operator_table:system/etc/operator_table \
    $(CUR_PATH)/phone/lib/libreference-ril-n58.so:system/lib/libreference-ril-n58.so \
    $(CUR_PATH)/phone/lib/libreference-ril.so:vendor/lib/libreference-ril.so

Modify device/rockchip/common/BoardConfig.mk

#enable 3g dongle
BOARD_HAVE_DONGLE ?= true

Modify device/rockchip/common/init.connectivity.rc and add ppp, otherwise there will be no network use

chmod 0777 /dev/ppp

Modify device/rockchip/rk3288/init.rk3288.rc

service ril-daemon /vendor/bin/hw/rild -l /vendor/lib/libreference-ril.so
    class main
    user root
    group radio cache inet misc audio sdcard_rw log
    capabilities BLOCK_SUSPEND NET_ADMIN NET_RAW

Modify device/rockchip/rk3288/manifest.xml

    <hal format="hidl">
        <name>android.hardware.radio</name>
        <transport>hwbinder</transport>
        <version>1.0</version>
        <interface>
            <name>IRadio</name>
            <instance>slot1</instance>
        </interface>
        <interface>
            <name>ISap</name>
            <instance>slot1</instance>
        </interface>
    </hal>
    <hal format="hidl">
        <name>android.hardware.radio.deprecated</name>
        <transport>hwbinder</transport>
        <version>1.0</version>
        <interface>
            <name>IOemHook</name>
            <instance>slot1</instance>
        </interface>
    </hal>

Modify device/rockchip/common/ueventd.rockchip.rc

# for radio
/dev/ttyUSB0              0660   radio		radio
/dev/ttyUSB1              0660   radio		radio
/dev/ttyUSB2              0660   radio		radio
/dev/ttyUSB3              0660   radio		radio
/dev/ttyUSB4              0660   radio		radio
/dev/ttyUSB5              0660   radio		radio
/dev/ttyUSB6              0660   radio		radio
/dev/ttyUSB7              0660   radio		radio
/dev/ttyUSB8              0660   radio		radio
/dev/ttyUSB9              0660   radio		radio

/dev/ttyUSB*              0660   radio      radio
/dev/ttyACM*              0660   radio      radio
/dev/cdc-wdm*		      0660	 radio		radio
/dev/qcqmi*		          0660	 radio		radio
/dev/cdc-acm*		      0660	 radio		radio

#PCIe
/dev/mhi_DUN 0660 radio radio
/dev/mhi_DIAG 0660 radio radio
/dev/mhi_BHI 0660 radio radio
/dev/mhi_LOOPBACK 0660 radio radio
/dev/mhi_QMI0 0660 radio radio

Modify device/rockchip/common/sepolicy/file_contexts

/dev/ttyFIQ[0-9]*    u:object_r:serial_device:s0
/dev/ttyUSB[0-9]*    u:object_r:radio_device:s0
/dev/ttyCOM[0-9]*    u:object_r:tty_device:s0
/dev/ttyACM[0-9]*    u:object_r:tty_device:s0
/dev/cdc-wdm[0-9]*    u:object_r:radio_device:s0
/dev/qcqmi[0-9]*    u:object_r:radio_device:s0
/vendor/bin/hw/rild u:object_r:rild_exec:s0
/dev/socket/rildOemHook    u:object_r:rild_exec:s0

#PCIe
/dev/mhi_DUN u:object_r:radio_device:s0
/dev/mhi_DIAG u:object_r:radio_device:s0
/dev/mhi_BHI u:object_r:radio_device:s0
/dev/mhi_LOOPBACK u:object_r:radio_device:s0
/dev/mhi_QMI0 u:object_r:radio_device:s0

Modify device/rockchip/common/sepolicy/rild.te

allow rild self:packet_socket { create bind write read };

Capture radio logs through adb logcat -b radio -v time

修改device/rockchip/rk3288/overlay/frameworks/base/core/res/res/values/config.xml

Modify mobile

    <string-array translatable="false" name="networkAttributes">
        <item>"wifi,1,1,2,-1,true"</item>
        <item>"mobile,0,0,0,-1,true"</item>
        <item>"mobile_mms,2,0,4,60000,true"</item>
        <item>"mobile_supl,3,0,2,60000,true"</item>
        <item>"mobile_dun,4,0,2,60000,true"</item>
        <item>"mobile_hipri,5,0,3,60000,true"</item>
        <item>"mobile_fota,10,0,2,60000,true"</item>
        <item>"mobile_ims,11,0,2,60000,true"</item>
        <item>"mobile_cbs,12,0,2,60000,true"</item>

        <item>"bluetooth,7,7,0,-1,true"</item>
        <item>"ethernet,9,9,9,-1,true"</item>
<!--add by blb-->
        <item>"pppoe,15,15,5,-1,true"</item>
    </string-array>

修改device/rockchip/common/overlay/frameworks/base/core/res/res/values/config.xml

    <bool name="config_voice_capable">true</bool>

    <!-- This device does not allow sms service. -->
    <bool name="config_sms_capable">true</bool>

device/rockchip/common/init.rk30board.rc

# for telephony function
on property:ro.boot.noril=false
    setprop ro.radio.noril false
    start ril-daemon

Modify defconfig

CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_GENERIC=y
CONFIG_USB_SERIAL_WWAN=y
CONFIG_USBNET=y
CONFIG_USB_SERIAL_OPTION=y

RK3288 Android8.1 adds EC25

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