RK3399 4G模块移远EC20移植调试

转载请注明出处：https://www.cnblogs.com/lialong1st/p/11266330.html

CPU：RK3399

系统：Android 7.1

1、通过串口打印或者adb获取模块的 pid 和 vid，顺便可以看到生成 4 个虚拟串口 /dev/ttyUSB*

[   11.734379] usb -1.1: new high-speed USB device number  using ehci-platform
[   11.828247] usb -1.1: New USB device found, idVendor=2c7c, idProduct=
[   11.828386] usb -1.1: New USB device strings: Mfr=, Product=, SerialNumber=
[   11.828413] usb -1.1: Product: Android
[   11.828436] usb -1.1: Manufacturer: Android
[   11.835480] option -1.1:1.0: GSM modem (-port) converter detected
[   11.841217] usb -1.1: GSM modem (-port) converter now attached to ttyUSB0
[   11.844988] option -1.1:1.1: GSM modem (-port) converter detected
[   11.851892] usb -1.1: GSM modem (-port) converter now attached to ttyUSB1
[   11.853964] option -1.1:1.2: GSM modem (-port) converter detected
[   11.864677] usb -1.1: GSM modem (-port) converter now attached to ttyUSB2
[   11.865658] option -1.1:1.3: GSM modem (-port) converter detected
[   11.871387] usb -1.1: GSM modem (-port) converter now attached to ttyUSB3

2、在代码中添加模块的 pid 和 vid，原始代码中已经包含移远的几个模块，仿照现有的添加 EC20

diff --git a/kernel/drivers/usb/serial/option.c b/kernel/drivers/usb/serial/option.c
index 1799aa0..f6c9e5d
--- a/kernel/drivers/usb/serial/option.c
+++ b/kernel/drivers/usb/serial/option.c
@@ -, +, @@ static void option_instat_callback(struct urb *urb);

 #define QUECTEL_VENDOR_ID                      0x2c7c
 /* These Quectel products use Quectel's vendor ID */
+#define QUECTEL_PRODUCT_EC20                   0x0125
 #define QUECTEL_PRODUCT_EC21                   0x0121
 #define QUECTEL_PRODUCT_EC25                   0x0125
 #define QUECTEL_PRODUCT_BG96                   0x0296
@@ -, +, @@ static const struct usb_device_id option_ids[] = {
        { USB_DEVICE(QUALCOMM_VENDOR_ID, YUGA_PRODUCT_CLM920_NC5),
          .driver_info = (kernel_ulong_t)&yuga_clm920_nc5_blacklist },
        /* Quectel products using Quectel vendor ID */
+       { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC20),
+         .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
        { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC21),
          .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
        { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC25)

3、添加模块的 so 库，此库需要移远提供，so 支持的系统要匹配，将 so 库拷贝到下面的路径

vendor/rockchip/common/phone/lib/libreference-ril.so

4、打开 device/rockchip/common/device.mk 文件，修改 rild.libpath 路径为 rild.libpath=/system/lib64/libreference-ril.so

diff --git a/device/rockchip/common/device.mk b/device/rockchip/common/device.mk
index be2cb2c..69034a7
--- a/device/rockchip/common/device.mk
+++ b/device/rockchip/common/device.mk
@@ -, +, @@ endif
 ifeq ($(strip $(BOARD_HAVE_DONGLE)),true)
 ifeq ($(strip $(TARGET_ARCH)), arm64)
 PRODUCT_PROPERTY_OVERRIDES += \
-    rild.libpath=/system/lib64/libril-rk29-dataonly.so
+    rild.libpath=/system/lib64/libreference-ril.so
 else
 PRODUCT_PROPERTY_OVERRIDES += \
     rild.libpath=/system/lib/libril-rk29-dataonly.so

因为 rk3399 是64位 CPU，所以 ifeq ($(strip $(TARGET_ARCH)), arm64) 条件成立。

但是前提都是 BOARD_HAVE_DONGLE 变量值为 true

注：本人测试，修改下面两个文件中的 rild.libpath 不起作用

device/rockchip/rk3399/system.prop

device/rockchip/rk3399/rk3399_all/system.prop

5、编译时将 so 库拷贝到上面指定目录 /system/lib64/libreference-ril.so

diff --git a/vendor/rockchip/common/phone/phone.mk b/vendor/rockchip/common/phone/phone.mk
index 946aacd..f8fc6e7
--- a/vendor/rockchip/common/phone/phone.mk
+++ b/vendor/rockchip/common/phone/phone.mk
@@ -, +, @@ 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/call-pppd:system/etc/ppp/call-pppd \
-    $(CUR_PATH)/phone/etc/operator_table:system/etc/operator_table
+    $(CUR_PATH)/phone/etc/operator_table:system/etc/operator_table \
+    $(CUR_PATH)/phone/lib/libreference-ril.so:system/lib64/libreference-ril.so

 ifeq ($(strip $(PRODUCT_MODEM)), DTS4108C)
 PRODUCT_COPY_FILES += \

6、设置 BOARD_HAVE_DONGLE 变量

diff --git a/device/rockchip/rk3399/rk3399_all.mk b/device/rockchip/rk3399/rk3399_all.mk
index 7a2d870..ce5060c
--- a/device/rockchip/rk3399/rk3399_all.mk
+++ b/device/rockchip/rk3399/rk3399_all.mk
@@ -, +, @@ BOARD_NFC_SUPPORT := false
 BOARD_HAS_GPS := false

 #for 3G/4G modem dongle support
-BOARD_HAVE_DONGLE := false
+BOARD_HAVE_DONGLE := true

 BOARD_GRAVITY_SENSOR_SUPPORT := true

此时移植完成，只要 so 库没问题，就可以正常上网。

如果 radio log 中打印如下信息：

RIL_SAP_Init not defined or exported in /system/lib64/libril-rk29-dataonly.so

检查 rild.libpath 的路径和名称是否正确。

No /proc/cmdline exception=java.io.FileNotFoundException: /proc/cmdline (Permission denied)

此报错不影响联网，可以忽略