嵌入式linux之iMX6ULL驱动开发 |
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嵌入式linux之iMX6ULL驱动开发
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回顾下移远4G模块移植过程， 还是蛮简单的。一通百通，无论是其他4G模块都是一样的。这里记录下过程，分享给有需要的人。环境使用正点原子的imax6ul开发板，板子默认支持中兴和移远EC20的驱动，这里要移植使用的是移远4G模块EC800。 环境准备imax6ul开发板 虚拟机(Ubuntu18.04) 交叉编译工具链 内核源码 安装依赖 # 安装 lzop 工具，用于生成压缩或解压镜像 sudo apt-get install lzop # 安装 ncurese 相关库， U-boot 或者内核菜单显示时需要 sudo apt-get install libncurses* 内核配置imx6ul开发板的imx_v7_defconfig的linux内核配置： CONFIG_APM_EMULATION=y CONFIG_KERNEL_LZO=y CONFIG_SYSVIPC=y CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=18 CONFIG_CGROUPS=y CONFIG_RELAY=y CONFIG_BLK_DEV_INITRD=y CONFIG_EXPERT=y CONFIG_KALLSYMS_ALL=y CONFIG_PERF_EVENTS=y CONFIG_PRINTK_TIME=y # CONFIG_SLUB_DEBUG is not set # CONFIG_COMPAT_BRK is not set CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y # CONFIG_BLK_DEV_BSG is not set CONFIG_ARCH_MXC=y CONFIG_SOC_IMX50=y CONFIG_SOC_IMX53=y CONFIG_SOC_IMX6Q=y CONFIG_SOC_IMX6SL=y CONFIG_SOC_IMX6SX=y CONFIG_SOC_IMX6ULL=y CONFIG_SOC_IMX7D=y CONFIG_SOC_IMX6SLL=y CONFIG_SOC_VF610=y # CONFIG_SWP_EMULATE is not set CONFIG_SMP=y CONFIG_HAVE_ARM_ARCH_TIMER=y CONFIG_VMSPLIT_2G=y CONFIG_PREEMPT=y CONFIG_AEABI=y CONFIG_HIGHMEM=y CONFIG_CMA=y CONFIG_CMDLINE="noinitrd console=ttymxc0,115200" CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_INTERACTIVE=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y CONFIG_ARM_IMX6Q_CPUFREQ=y CONFIG_ARM_IMX7D_CPUFREQ=y CONFIG_CPU_IDLE=y CONFIG_VFP=y CONFIG_NEON=y CONFIG_BINFMT_MISC=m CONFIG_PM_DEBUG=y CONFIG_PM_TEST_SUSPEND=y CONFIG_NET=y CONFIG_PACKET=y CONFIG_UNIX=y CONFIG_INET=y CONFIG_IP_PNP=y CONFIG_IP_PNP_DHCP=y # CONFIG_INET_XFRM_MODE_TRANSPORT is not set # CONFIG_INET_XFRM_MODE_TUNNEL is not set # CONFIG_INET_XFRM_MODE_BEET is not set # CONFIG_INET_LRO is not set CONFIG_IPV6=y CONFIG_VLAN_8021Q=y CONFIG_LLC2=y CONFIG_CAN=y CONFIG_CAN_FLEXCAN=y CONFIG_CAN_M_CAN=y CONFIG_BT=y CONFIG_BT_RTKBTUSB=m CONFIG_BT_RFCOMM=y CONFIG_BT_RFCOMM_TTY=y CONFIG_BT_BNEP=y CONFIG_BT_BNEP_MC_FILTER=y CONFIG_BT_BNEP_PROTO_FILTER=y CONFIG_BT_HIDP=y CONFIG_BT_HCIBTUSB=y CONFIG_BT_HCIUART=y CONFIG_BT_HCIUART_BCSP=y CONFIG_BT_HCIUART_ATH3K=y CONFIG_BT_HCIBCM203X=y CONFIG_BT_ATH3K=y CONFIG_CFG80211=y CONFIG_CFG80211_WEXT=y CONFIG_USB_ZD1201=m CONFIG_MAC80211=y CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set CONFIG_DMA_CMA=y CONFIG_CMA_SIZE_MBYTES=0 CONFIG_IMX_WEIM=y CONFIG_CONNECTOR=y CONFIG_MTD=y CONFIG_MTD_CMDLINE_PARTS=y CONFIG_MTD_BLOCK=y CONFIG_MTD_CFI=y CONFIG_MTD_JEDECPROBE=y CONFIG_MTD_CFI_INTELEXT=y CONFIG_MTD_CFI_AMDSTD=y CONFIG_MTD_CFI_STAA=y CONFIG_MTD_PHYSMAP_OF=y CONFIG_MTD_DATAFLASH=y CONFIG_MTD_M25P80=y CONFIG_MTD_SST25L=y CONFIG_MTD_NAND=y CONFIG_MTD_NAND_GPMI_NAND=y CONFIG_MTD_NAND_MXC=y CONFIG_MTD_SPI_NOR=y CONFIG_SPI_FSL_QUADSPI=y CONFIG_MTD_UBI=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=65536 CONFIG_SENSORS_FXOS8700=y CONFIG_SENSORS_FXAS2100X=y CONFIG_EEPROM_AT24=y CONFIG_EEPROM_AT25=y # CONFIG_SCSI_PROC_FS is not set CONFIG_BLK_DEV_SD=y CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_LOGGING=y CONFIG_SCSI_SCAN_ASYNC=y # CONFIG_SCSI_LOWLEVEL is not set CONFIG_ATA=y CONFIG_SATA_AHCI_PLATFORM=y CONFIG_AHCI_IMX=y CONFIG_PATA_IMX=y CONFIG_NETDEVICES=y # CONFIG_NET_VENDOR_BROADCOM is not set CONFIG_CS89x0=y CONFIG_CS89x0_PLATFORM=y # CONFIG_NET_VENDOR_FARADAY is not set # CONFIG_NET_VENDOR_INTEL is not set # CONFIG_NET_VENDOR_MARVELL is not set # CONFIG_NET_VENDOR_MICREL is not set # CONFIG_NET_VENDOR_MICROCHIP is not set # CONFIG_NET_VENDOR_NATSEMI is not set # CONFIG_NET_VENDOR_SEEQ is not set CONFIG_SMC91X=y CONFIG_SMC911X=y CONFIG_SMSC911X=y CONFIG_SMSC_PHY=y # CONFIG_NET_VENDOR_STMICRO is not set CONFIG_MICREL_PHY=y CONFIG_PPP=y CONFIG_PPP_BSDCOMP=y CONFIG_PPP_DEFLATE=y CONFIG_PPP_FILTER=y CONFIG_PPP_MPPE=y CONFIG_PPP_MULTILINK=y CONFIG_PPPOE=y CONFIG_PPP_ASYNC=y CONFIG_PPP_SYNC_TTY=y CONFIG_USB_PEGASUS=m CONFIG_USB_RTL8150=m CONFIG_USB_RTL8152=m CONFIG_USB_USBNET=y CONFIG_USB_NET_CDC_EEM=m CONFIG_BCMDHD=y CONFIG_BCMDHD_SDIO=y CONFIG_BCMDHD_FW_PATH="/lib/firmware/bcm/ZP_BCM4339/fw_bcmdhd.bin" CONFIG_BCMDHD_NVRAM_PATH="/lib/firmware/bcm/ZP_BCM4339/bcmdhd.ZP.OOB.cal" CONFIG_RTL_CARDS=m CONFIG_RTL8188EUS=m CONFIG_USB_GOBI_NET=m CONFIG_EXTRA_RTL8192CU=m CONFIG_BRIDGE=y CONFIG_RFKILL=y CONFIG_RFKILL_INPUT=y # CONFIG_INPUT_MOUSEDEV_PSAUX is not set CONFIG_INPUT_EVDEV=y CONFIG_INPUT_EVBUG=m CONFIG_KEYBOARD_GPIO=y CONFIG_KEYBOARD_IMX=y CONFIG_MOUSE_PS2=m CONFIG_MOUSE_PS2_ELANTECH=y CONFIG_INPUT_TOUCHSCREEN=y CONFIG_TOUCHSCREEN_ADS7846=y CONFIG_TOUCHSCREEN_EGALAX=y CONFIG_TOUCHSCREEN_ELAN_TS=y CONFIG_TOUCHSCREEN_MAX11801=y CONFIG_TOUCHSCREEN_IMX6UL_TSC=y CONFIG_TOUCHSCREEN_MC13783=y CONFIG_TOUCHSCREEN_TSC2007=y CONFIG_TOUCHSCREEN_STMPE=y CONFIG_TOUCHSCREEN_EDT_FT5X06=y CONFIG_TOUCHSCREEN_GT9XX=y CONFIG_INPUT_MISC=y CONFIG_INPUT_MMA8450=y CONFIG_INPUT_MPL3115=y CONFIG_SENSOR_FXLS8471=y CONFIG_INPUT_ISL29023=y CONFIG_SERIO_SERPORT=m # CONFIG_LEGACY_PTYS is not set # CONFIG_DEVKMEM is not set CONFIG_SERIAL_IMX=y CONFIG_SERIAL_IMX_CONSOLE=y CONFIG_SERIAL_FSL_LPUART=y CONFIG_SERIAL_FSL_LPUART_CONSOLE=y CONFIG_FSL_OTP=y CONFIG_LITEON_AP3216C=y CONFIG_HW_RANDOM_IMX_RNG=y # CONFIG_I2C_COMPAT is not set CONFIG_I2C_CHARDEV=y # CONFIG_I2C_HELPER_AUTO is not set CONFIG_I2C_ALGOPCF=m CONFIG_I2C_ALGOPCA=m CONFIG_I2C_IMX=y CONFIG_SPI=y CONFIG_SPI_GPIO=y CONFIG_SPI_IMX=y CONFIG_SPI_SPIDEV=y CONFIG_GPIO_SYSFS=y CONFIG_GPIO_MAX732X=y CONFIG_GPIO_PCA953X=y CONFIG_GPIO_74X164=y CONFIG_POWER_SUPPLY=y CONFIG_SABRESD_MAX8903=y CONFIG_POWER_RESET=y CONFIG_POWER_RESET_SYSCON_POWEROFF=y CONFIG_SENSORS_MAX17135=y CONFIG_SENSORS_MAG3110=y CONFIG_THERMAL=y CONFIG_CPU_THERMAL=y CONFIG_IMX_THERMAL=y CONFIG_DEVICE_THERMAL=y CONFIG_WATCHDOG=y CONFIG_IMX2_WDT=y CONFIG_MFD_DA9052_I2C=y CONFIG_MFD_MC13XXX_SPI=y CONFIG_MFD_MC13XXX_I2C=y CONFIG_MFD_MAX17135=y CONFIG_MFD_SI476X_CORE=y CONFIG_MFD_STMPE=y CONFIG_REGULATOR=y CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_REGULATOR_ANATOP=y CONFIG_REGULATOR_DA9052=y CONFIG_REGULATOR_GPIO=y CONFIG_REGULATOR_MAX17135=y CONFIG_REGULATOR_MC13783=y CONFIG_REGULATOR_MC13892=y CONFIG_REGULATOR_PFUZE100=y CONFIG_MEDIA_SUPPORT=y CONFIG_MEDIA_CAMERA_SUPPORT=y CONFIG_MEDIA_RADIO_SUPPORT=y CONFIG_MEDIA_RC_SUPPORT=y CONFIG_RC_DEVICES=y CONFIG_IR_GPIO_CIR=y CONFIG_MEDIA_USB_SUPPORT=y CONFIG_USB_VIDEO_CLASS=m CONFIG_V4L_PLATFORM_DRIVERS=y CONFIG_VIDEO_MXC_OUTPUT=y CONFIG_VIDEO_MXC_CAPTURE=m CONFIG_MXC_CAMERA_OV5640=m CONFIG_MXC_CAMERA_OV5642=m CONFIG_MXC_CAMERA_OV5640_MIPI=m CONFIG_MXC_TVIN_ADV7180=m CONFIG_MXC_IPU_DEVICE_QUEUE_SDC=m CONFIG_VIDEO_MXC_IPU_OUTPUT=y CONFIG_VIDEO_MXC_PXP_V4L2=y CONFIG_VIDEO_MXC_CSI_CAMERA=m CONFIG_MXC_VADC=m CONFIG_MXC_MIPI_CSI=m CONFIG_MXC_CAMERA_OV5647_MIPI=m CONFIG_SOC_CAMERA=y CONFIG_VIDEO_MX3=y CONFIG_V4L_MEM2MEM_DRIVERS=y CONFIG_VIDEO_CODA=y CONFIG_RADIO_SI476X=y CONFIG_SOC_CAMERA_OV2640=m CONFIG_SOC_CAMERA_OV772X=m CONFIG_DRM=y CONFIG_DRM_VIVANTE=y CONFIG_FB=y CONFIG_FB_MXS=y CONFIG_FB_MXC_SYNC_PANEL=y CONFIG_FB_MXC_MIPI_DSI=y CONFIG_FB_MXC_MIPI_DSI_SAMSUNG=y CONFIG_FB_MXC_TRULY_WVGA_SYNC_PANEL=y CONFIG_FB_MXC_TRULY_PANEL_TFT3P5079E=y CONFIG_FB_MXC_TRULY_PANEL_TFT3P5581E=y CONFIG_FB_MXC_LDB=y CONFIG_FB_MXC_HDMI=y CONFIG_FB_MXS_SII902X=y CONFIG_FB_MXC_DCIC=m CONFIG_HANNSTAR_CABC=y CONFIG_FB_MXC_EINK_PANEL=y CONFIG_FB_MXC_EINK_V2_PANEL=y CONFIG_LCD_CLASS_DEVICE=y CONFIG_LCD_L4F00242T03=y CONFIG_LCD_PLATFORM=y CONFIG_BACKLIGHT_PWM=y CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y CONFIG_LOGO=y CONFIG_SOUND=y CONFIG_SND=y CONFIG_SND_USB_AUDIO=m CONFIG_SND_SOC=y CONFIG_SND_IMX_SOC=y CONFIG_SND_SOC_EUKREA_TLV320=y CONFIG_SND_SOC_IMX_WM8960=y CONFIG_SND_SOC_IMX_SII902X=y CONFIG_SND_SOC_IMX_WM8958=y CONFIG_SND_SOC_IMX_CS42888=y CONFIG_SND_SOC_IMX_WM8962=y CONFIG_SND_SOC_IMX_SGTL5000=y CONFIG_SND_SOC_IMX_MQS=y CONFIG_SND_SOC_IMX_SPDIF=y CONFIG_SND_SOC_IMX_MC13783=y CONFIG_SND_SOC_IMX_SI476X=y CONFIG_SND_SOC_IMX_HDMI=y CONFIG_USB=y CONFIG_USB_OTG_WHITELIST=y CONFIG_USB_OTG_FSM=y CONFIG_USB_EHCI_HCD=y CONFIG_USB_EHCI_MXC=y CONFIG_USB_HCD_TEST_MODE=y CONFIG_USB_ACM=m CONFIG_USB_STORAGE=y CONFIG_USB_CHIPIDEA=y CONFIG_USB_CHIPIDEA_UDC=y CONFIG_USB_CHIPIDEA_HOST=y CONFIG_USB_SERIAL=m CONFIG_USB_SERIAL_GENERIC=y CONFIG_USB_SERIAL_FTDI_SIO=m CONFIG_USB_SERIAL_OPTION=m CONFIG_USB_EHSET_TEST_FIXTURE=y CONFIG_NOP_USB_XCEIV=y CONFIG_USB_MXS_PHY=y CONFIG_USB_GADGET=y CONFIG_USB_CONFIGFS=m CONFIG_USB_CONFIGFS_SERIAL=y CONFIG_USB_CONFIGFS_ACM=y CONFIG_USB_CONFIGFS_OBEX=y CONFIG_USB_CONFIGFS_NCM=y CONFIG_USB_CONFIGFS_ECM=y CONFIG_USB_CONFIGFS_ECM_SUBSET=y CONFIG_USB_CONFIGFS_RNDIS=y CONFIG_USB_CONFIGFS_EEM=y CONFIG_USB_CONFIGFS_MASS_STORAGE=y CONFIG_USB_CONFIGFS_F_LB_SS=y CONFIG_USB_CONFIGFS_F_FS=y CONFIG_USB_ZERO=m CONFIG_USB_ETH=m CONFIG_USB_G_NCM=m CONFIG_USB_GADGETFS=m CONFIG_USB_MASS_STORAGE=m CONFIG_USB_G_SERIAL=m CONFIG_USB_SERIAL_CH341=m CONFIG_USB_SERIAL_CP210X=m CONFIG_MMC=y CONFIG_MMC_SDHCI=y CONFIG_MMC_SDHCI_PLTFM=y CONFIG_MMC_SDHCI_ESDHC_IMX=y CONFIG_MXC_IPU=y CONFIG_MXC_IPU_V3_PRE=y CONFIG_MXC_GPU_VIV=y CONFIG_MXC_SIM=y CONFIG_MXC_MIPI_CSI2=y CONFIG_MXC_HDMI_CEC=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y CONFIG_LEDS_GPIO=y CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=y CONFIG_LEDS_TRIGGER_ONESHOT=y CONFIG_LEDS_TRIGGER_HEARTBEAT=y CONFIG_LEDS_TRIGGER_BACKLIGHT=y CONFIG_LEDS_TRIGGER_GPIO=y CONFIG_RTC_CLASS=y CONFIG_RTC_INTF_DEV_UIE_EMUL=y CONFIG_RTC_DRV_MC13XXX=y CONFIG_RTC_DRV_MXC=y CONFIG_RTC_DRV_SNVS=y CONFIG_DMADEVICES=y CONFIG_MXC_PXP_V2=y CONFIG_MXC_PXP_V3=y CONFIG_IMX_SDMA=y CONFIG_MXS_DMA=y CONFIG_DMATEST=m CONFIG_STAGING=y CONFIG_STAGING_MEDIA=y # CONFIG_IOMMU_SUPPORT is not set CONFIG_IIO=y CONFIG_IMX7D_ADC=y CONFIG_VF610_ADC=y CONFIG_PWM=y CONFIG_PWM_IMX=y CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y CONFIG_EXT2_FS_SECURITY=y CONFIG_EXT3_FS=y CONFIG_EXT3_FS_POSIX_ACL=y CONFIG_EXT3_FS_SECURITY=y CONFIG_EXT4_FS=y CONFIG_EXT4_FS_POSIX_ACL=y CONFIG_EXT4_FS_SECURITY=y CONFIG_QUOTA=y CONFIG_QUOTA_NETLINK_INTERFACE=y # CONFIG_PRINT_QUOTA_WARNING is not set CONFIG_AUTOFS4_FS=y CONFIG_FUSE_FS=y CONFIG_ISO9660_FS=m CONFIG_JOLIET=y CONFIG_ZISOFS=y CONFIG_UDF_FS=m CONFIG_MSDOS_FS=m CONFIG_VFAT_FS=y CONFIG_TMPFS=y CONFIG_JFFS2_FS=y CONFIG_UBIFS_FS=y CONFIG_NFS_FS=y CONFIG_NFS_V3_ACL=y CONFIG_NFS_V4=y CONFIG_ROOT_NFS=y CONFIG_NLS_DEFAULT="cp437" CONFIG_NLS_CODEPAGE_437=y CONFIG_FAT_DEFAULT_IOCHARSET="utf8" CONFIG_NLS_ASCII=y CONFIG_NLS_ISO8859_1=y CONFIG_NLS_ISO8859_15=m CONFIG_NLS_UTF8=y CONFIG_DEBUG_FS=y CONFIG_MAGIC_SYSRQ=y # CONFIG_SCHED_DEBUG is not set # CONFIG_DEBUG_BUGVERBOSE is not set # CONFIG_FTRACE is not set CONFIG_SECURITYFS=y CONFIG_CRYPTO_USER=y CONFIG_CRYPTO_TEST=m CONFIG_CRYPTO_CTS=y CONFIG_CRYPTO_LRW=y CONFIG_CRYPTO_XTS=y CONFIG_CRYPTO_MD4=y CONFIG_CRYPTO_MD5=y CONFIG_CRYPTO_MICHAEL_MIC=y CONFIG_CRYPTO_RMD128=y CONFIG_CRYPTO_RMD160=y CONFIG_CRYPTO_RMD256=y CONFIG_CRYPTO_RMD320=y CONFIG_CRYPTO_SHA512=y CONFIG_CRYPTO_TGR192=y CONFIG_CRYPTO_WP512=y CONFIG_CRYPTO_BLOWFISH=y CONFIG_CRYPTO_CAMELLIA=y CONFIG_CRYPTO_DES=y CONFIG_CRYPTO_TWOFISH=y # CONFIG_CRYPTO_ANSI_CPRNG is not set CONFIG_CRYPTO_DEV_FSL_CAAM=y CONFIG_CRYPTO_DEV_FSL_CAAM_SM=y CONFIG_CRYPTO_DEV_FSL_CAAM_SM_TEST=y CONFIG_CRYPTO_DEV_FSL_CAAM_SECVIO=y CONFIG_CRYPTO_DEV_MXS_DCP=y CONFIG_CRC_CCITT=m CONFIG_CRC_T10DIF=y CONFIG_CRC7=m CONFIG_LIBCRC32C=m CONFIG_FONTS=y CONFIG_FONT_8x8=y CONFIG_FONT_8x16=y内核编译步骤： #使用Yocto SDK里的GCC 5.3.0交叉编译器编译出厂Linux源码,可不用指定ARCH等，直接执行Make source /opt/fsl-imx-x11/4.1.15-2.1.0/environment-setup-cortexa7hf-neon-poky-linux-gnueabi #!/bin/bash #编译前先清除 make distclean #配置defconfig文件 make imx_v7_defconfig -j 16 #开始编译zImage make zImage -j 16设备树编译： #NandFlash类型核心板 #编译正点原子各种显示设备的设备树，若用户没有屏， #启动时默认会选择imx6ull-14x14-nand-4.3-480x272-c.dtb加载 make imx6ull-14x14-nand-10.1-1280x800-c.dtb make imx6ull-14x14-nand-7-1024x600-c.dtb make imx6ull-14x14-nand-7-800x480-c.dtb make imx6ull-14x14-nand-4.3-800x480-c.dtb make imx6ull-14x14-nand-4.3-480x272-c.dtb make imx6ull-14x14-nand-vga.dtb make imx6ull-14x14-nand-hdmi.dtb 内核驱动模块编译 #编译内核模块 make modules -j 16 #在当前目录下新建一个tmp目录，用于存放编译后的目标文件 if [ ! -e "./tmp" ]; then mkdir tmp fi rm -rf tmp/* make modules_install INSTALL_MOD_PATH=tmp cd tmp/lib/modules tar -jcvf ../../modules.tar.bz2 . cd - rm -rf tmp/lib #拷贝zImage到tmp目录下 cp arch/arm/boot/zImage tmp #拷贝所有编译的设备树文件到当前的tmp目录下 cp arch/arm/boot/dts/imx6ull*.dtb tmp echo "编译完成，请查看当前目录下的tmp文件夹查看编译好的目标文件" 驱动移植 USB 转串口驱动修改模块加载 USB 转串口 option 驱动程序后，会在/dev 目录下创建 ttyUSB0、ttyUSB1 和 ttyUSB2 等设备文件。以下介绍如何将 USB 转串口 option 驱动程序移植到 Linux 操作系统中。 移植的第一步，找到你的4G模块的usb的VID和PID添加进去。 为了识别模块，需将模块的 VID 和 PID 信息添加到[KERNEL]/drivers/usb/serial/option.c 文件中，对应的 VID 和 PID 。 以EC25列模块为例：高于2.6.30 的 Linux 内核版本，可在[KERNEL]/drivers/usb/serial/option.c 文件中添加以下语句： static const struct usb_device_id option_ids[] = { #if 1 //Added by Quectel { USB_DEVICE(0x2C7C, 0x0125) }, #endif我的EC800模块的PID和VID是0x2c7c,0x6002。 /* EC20,EC800 4G*/ #define QUECTEL_VENDOR_ID 0x2C7C #define QUECTEL_PRODUCT_EC20 0X0125 #define QUECTEL_PRODUCT_EC800 0x6002 static const struct usb_device_id option_ids[] = { { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC20)},/* EC20*/ { USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC800)},/* EC800*/ { USB_DEVICE(GOSUNCN_VENDOR_ID, GOSUNCN_PRODUCT_0117)},/* ME3630-w */ { USB_DEVICE(GOSUNCN_VENDOR_ID, GOSUNCN_PRODUCT_0199)},/* ME3630-w */ { USB_DEVICE(GOSUNCN_VENDOR_ID, GOSUNCN_PRODUCT_1476)},/* ME3630-w */ 使用 USBNet 驱动接下来配置使模块的所有 USB 接口均绑定 USB 转串口 option 驱动程序，导致 USBNet 驱动程序接口无法工作。用户可以添加以下语句来防止 USBNet 驱动程序接口绑定 USB 转串口 option 驱动程序。 static int option_probe(struct usb_serial *serial, const struct usb_device_id *id) { struct usb_interface_descriptor *iface_desc = &serial->interface->cur_altsetting->desc; struct usb_device_descriptor *dev_desc = &serial->dev->descriptor; const struct option_blacklist_info *blacklist; /* GOSUNCN 4G modems */ printk("idVendor=%x, idProduct=%x, bInterfaceNumber =%d\r\n", serial->dev->descriptor.idVendor, serial->dev->descriptor.idProduct, serial->interface->cur_altsetting->desc. bInterfaceNumber); //.......... if (dev_desc->idVendor == cpu_to_le16(0x2c7C) && iface_desc->bInterfaceNumber >= 4) return -ENODEV; if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)) { __u16 idProduct = le16_to_cpu(serial->dev->descriptor.idProduct); struct usb_interface_descriptor *intf = &serial->interface->cur_altsetting->desc; if (intf->bInterfaceClass != 0xFF || intf->bInterfaceSubClass == 0x42) { //ECM, RNDIS, NCM, MBIM, ACM, UAC, ADB return -ENODEV; } if ((idProduct&0xF000) == 0x0000) { //MDM interface 4 is QMI if (intf->bInterfaceNumber == 4 && intf->bNumEndpoints == 3 && intf->bInterfaceSubClass==0xFF && intf->bInterfaceProtocol == 0xFF){ return -ENODEV; } } } /* Store the blacklist info so we can use it during attach. */ usb_set_serial_data(serial, (void *)blacklist); return 0; } 添加零包机制根据 USB 协议的要求，通过添加如下语句在 bulk-out 传输过程中添加处理零包的机制： 高于 2.6.34 的 Linux 内核版本，需在[KERNEL]/drivers/usb/serial/usb_wwan.c 文件中添加以下语句。低于 2.6.35 的 Linux 内核版本，需在[KERNEL]/drivers/usb/serial/option.c 文件中添加。 static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port, int endpoint, int dir, void *ctx, char *buf, int len, void (*callback) (struct urb *)) { struct usb_serial *serial = port->serial; struct urb *urb; urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ if (!urb) return NULL; usb_fill_bulk_urb(urb, serial->dev, usb_sndbulkpipe(serial->dev, endpoint) | dir, buf, len, callback, ctx); if (dir == USB_DIR_OUT) { struct usb_device_descriptor *desc = &serial->dev->descriptor; if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9090)) urb->transfer_flags |= URB_ZERO_PACKET; if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9003)) urb->transfer_flags |= URB_ZERO_PACKET; if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9215)) urb->transfer_flags |= URB_ZERO_PACKET; if (desc->idVendor == cpu_to_le16(0x2C7C)) urb->transfer_flags |= URB_ZERO_PACKET; } return urb; } 添加 Reset-resume 机制部分 USB 主机控制器或 USB hub 在 MCU 进入 Suspend/Sleep（挂起/睡眠）模式时会发生掉电或复位，并且在 MCU 退出 Suspend/Sleep 模式后不能使模块恢复。需要通过添加以下语句来启用 reset-resume机制。高于 3.4 的 Linux 内核版本，需在[KERNEL]/drivers/usb/serial/option.c 文件中添加以下语句。 static struct usb_serial_driver option_1port_device = { …… #ifdef CONFIG_PM .suspend = usb_wwan_suspend, .resume = usb_wwan_resume, #if 1 //Added by Quectel .reset_resume = usb_wwan_resume, #endif #endif };拨号测试，无论使用ppp模式或者是ECM模式，都是需要拨号的。所谓的拨号直观上看就是通过串口操作AT指令，让模块联网的过程。所以开头的第一步，让能识别出ttyUSB0,ttyUSB1等是必须的。 以下是拨号的AT指令日志。 正式用建议用官方提供的拨号程序quectel-CM即可，简单且功能强大。
附上拨号源码应用程序quectel-CM的下载地址，可以直接正式用。该应用程序会自动查找设备并使用相应的驱动自动拨号： 拨号源码下载地址： https://download.csdn.net/download/qq8864/88050116 以下的拨号日志： root@ATK-IMX6U:~# ls driver quectel-CM shell root@ATK-IMX6U:~# ./quectel-CM [07-22_07:32:47:407] QConnectManager_Linux_V1.6.4 [07-22_07:32:47:410] Find /sys/bus/usb/devices/1-1 idVendor=0x2c7c idProduct=0x6002, bus=0x001, dev=0x005 [07-22_07:32:47:412] Auto find qmichannel = /dev/ttyUSB1 [07-22_07:32:47:412] Auto find usbnet_adapter = usb0 [07-22_07:32:47:413] netcard driver = cdc_ether, driver version = 22-Aug-2005 [07-22_07:32:47:416] Modem works in ECM_RNDIS_NCM mode [07-22_07:32:47:436] atc_fd = 7 [07-22_07:32:47:438] AT> ATE0Q0V1 [07-22_07:32:47:441] AT< ATE0Q0V1 [07-22_07:32:47:443] AT< OK [07-22_07:32:48:444] AT> AT+QCFG="usbnet" [07-22_07:32:48:447] AT< +QCFG: "usbnet",1 [07-22_07:32:48:447] AT< OK [07-22_07:32:48:447] AT> AT+QNETDEVCTL=? [07-22_07:32:48:449] AT< +QNETDEVCTL: (0-3),(1-15),(0-1) [07-22_07:32:48:449] AT< OK [07-22_07:32:48:450] AT> AT+CGREG=2 [07-22_07:32:48:451] AT< OK [07-22_07:32:48:451] AT> AT+CEREG=2 [07-22_07:32:48:453] AT< OK [07-22_07:32:48:454] AT> AT+C5GREG=2 [07-22_07:32:48:456] AT< ERROR [07-22_07:32:48:456] AT> AT+QNETDEVSTATUS=? [07-22_07:32:48:458] AT< ERROR [07-22_07:32:48:458] AT> AT+QCFG="NAT" [07-22_07:32:48:460] AT< +QCFG: "nat",1 [07-22_07:32:48:460] AT< OK [07-22_07:32:48:461] AT> AT+CGMR [07-22_07:32:48:463] AT< EC800MCNLCR06A05M04 [07-22_07:32:48:463] AT< OK [07-22_07:32:48:463] AT> AT+CPIN? [07-22_07:32:48:465] AT< +CPIN: READY [07-22_07:32:48:465] AT< OK [07-22_07:32:48:465] AT> AT+QCCID [07-22_07:32:48:468] AT< +QCCID: 898604C6062260003592 [07-22_07:32:48:468] AT< OK [07-22_07:32:48:468] requestGetICCID 898604C6062260003592 [07-22_07:32:48:468] AT> AT+CIMI [07-22_07:32:48:471] AT< 460084674003592 [07-22_07:32:48:471] AT< OK [07-22_07:32:48:471] requestGetIMSI 460084674003592 [07-22_07:32:48:471] AT> AT+QICSGP=1 [07-22_07:32:48:474] AT< +QICSGP: 3,"","","",0 [07-22_07:32:48:474] AT< OK [07-22_07:32:48:474] requestGetProfile[1] ///0/IPV4V6 [07-22_07:32:48:474] AT> AT+COPS=3,0;+COPS?;+COPS=3,1;+COPS?;+COPS=3,2;+COPS? [07-22_07:32:48:478] AT< +COPS: 0,0,"CHINA MOBILE",7 [07-22_07:32:48:478] AT< +COPS: 0,1,"CMCC",7 [07-22_07:32:48:478] AT< +COPS: 0,2,"46000",7 [07-22_07:32:48:478] AT< OK [07-22_07:32:48:478] AT> AT+CEREG? [07-22_07:32:48:480] AT< +CEREG: 2,1,"4978","EF555C2",7 [07-22_07:32:48:481] AT< OK [07-22_07:32:48:481] AT> at+cops? [07-22_07:32:48:483] AT< +COPS: 0,2,"46000",7 [07-22_07:32:48:483] AT< OK [07-22_07:32:48:483] AT> at+qeng="servingcell" [07-22_07:32:48:492] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-86,-3,-81,15,40 [07-22_07:32:48:492] AT< OK [07-22_07:32:48:492] AT> AT+QNETDEVCTL? [07-22_07:32:48:495] AT< +QNETDEVCTL: 0,0,0,0 [07-22_07:32:48:495] AT< OK [07-22_07:32:48:496] ifconfig usb0 0.0.0.0 [07-22_07:32:48:547] ifconfig usb0 down [07-22_07:32:48:607] AT> AT+CGACT? [07-22_07:32:48:611] AT< +CGACT: 1,1 [07-22_07:32:48:611] AT< OK [07-22_07:32:48:611] AT> AT+QNETDEVCTL=1,1,1 [07-22_07:32:50:613] AT< OK [07-22_07:32:50:614] AT> AT+CGPADDR=1 [07-22_07:32:50:621] AT< +CGPADDR: 1,"10.68.39.96","::0:0:0:0:0:0:0" [07-22_07:32:50:621] AT< OK [07-22_07:32:50:621] requestGetIPAddress 10.68.39.96 [07-22_07:32:50:622] AT> at+cops? [07-22_07:32:50:624] AT< +COPS: 0,2,"46000",7 [07-22_07:32:50:624] AT< OK [07-22_07:32:50:625] AT> at+qeng="servingcell" [07-22_07:32:50:633] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-4,-81,14,40 [07-22_07:32:50:633] AT< OK [07-22_07:32:50:634] AT> AT+QNETDEVCTL? [07-22_07:32:50:635] AT< +QNETDEVSTATUS: 1 [07-22_07:32:50:636] AT< +QNETDEVCTL: 1,1,1,1 [07-22_07:32:50:636] AT< OK [07-22_07:32:50:637] AT> AT+CGACT? [07-22_07:32:50:640] AT< +CGACT: 1,1 [07-22_07:32:50:640] AT< OK [07-22_07:32:50:641] ifconfig usb0 up [07-22_07:32:50:701] busybox udhcpc -f -n -q -t 5 -i usb0 [07-22_07:32:50:741] udhcpc (v1.24.1) started [07-22_07:32:50:947] Sending discover... [07-22_07:32:51:007] Sending select for 10.68.39.96... [07-22_07:32:51:067] Lease of 10.68.39.96 obtained, lease time 86400 [07-22_07:32:51:227] /etc/udhcpc.d/50default: Adding DNS 120.196.165.7 [07-22_07:32:51:228] /etc/udhcpc.d/50default: Adding DNS 221.179.38.7 [07-22_07:32:51:257] AT> at+cops? [07-22_07:32:51:260] AT< +COPS: 0,2,"46000",7 [07-22_07:32:51:261] AT< OK [07-22_07:32:51:261] AT> at+qeng="servingcell" [07-22_07:32:51:267] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,15,40 [07-22_07:32:51:267] AT< OK [07-22_07:32:51:267] AT> AT+QNETDEVCTL? [07-22_07:32:51:270] AT< +QNETDEVCTL: 1,1,1,1 [07-22_07:32:51:270] AT< OK [07-22_07:32:51:270] AT> AT+CGACT? [07-22_07:32:51:274] AT< +CGACT: 1,1 [07-22_07:32:51:274] AT< OK [07-22_07:33:06:288] AT> at+cops? [07-22_07:33:06:291] AT< +COPS: 0,2,"46000",7 [07-22_07:33:06:291] AT< OK [07-22_07:33:06:291] AT> at+qeng="servingcell" [07-22_07:33:06:299] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,14,40 [07-22_07:33:06:299] AT< OK [07-22_07:33:06:299] AT> AT+QNETDEVCTL? [07-22_07:33:06:302] AT< +QNETDEVCTL: 1,1,1,1 [07-22_07:33:06:302] AT< OK [07-22_07:33:06:302] AT> AT+CGACT? [07-22_07:33:06:306] AT< +CGACT: 1,1 [07-22_07:33:06:306] AT< OK [07-22_07:33:21:317] AT> at+cops? [07-22_07:33:21:320] AT< +COPS: 0,2,"46000",7 [07-22_07:33:21:321] AT< OK [07-22_07:33:21:321] AT> at+qeng="servingcell" [07-22_07:33:21:328] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,15,39 [07-22_07:33:21:328] AT< OK [07-22_07:33:21:328] AT> AT+QNETDEVCTL? [07-22_07:33:21:331] AT< +QNETDEVCTL: 1,1,1,1 [07-22_07:33:21:331] AT< OK [07-22_07:33:21:331] AT> AT+CGACT? [07-22_07:33:21:335] AT< +CGACT: 1,1 [07-22_07:33:21:335] AT< OK [07-22_07:33:36:346] AT> at+cops? [07-22_07:33:36:349] AT< +COPS: 0,2,"46000",7 [07-22_07:33:36:349] AT< OK [07-22_07:33:36:349] AT> at+qeng="servingcell" [07-22_07:33:36:356] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,15,39 [07-22_07:33:36:356] AT< OK [07-22_07:33:36:357] AT> AT+QNETDEVCTL? [07-22_07:33:36:359] AT< +QNETDEVCTL: 1,1,1,1 [07-22_07:33:36:360] AT< OK [07-22_07:33:36:360] AT> AT+CGACT? [07-22_07:33:36:363] AT< +CGACT: 1,1 [07-22_07:33:36:364] AT< OK [07-22_07:33:51:366] AT> at+cops? [07-22_07:33:51:369] AT< +COPS: 0,2,"46000",7 [07-22_07:33:51:369] AT< OK [07-22_07:33:51:370] AT> at+qeng="servingcell" [07-22_07:33:51:378] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-88,-3,-81,14,39 [07-22_07:33:51:379] AT< OK [07-22_07:33:51:379] AT> AT+QNETDEVCTL? [07-22_07:33:51:381] AT< +QNETDEVCTL: 1,1,1,1 [07-22_07:33:51:381] AT< OK [07-22_07:33:51:382] AT> AT+CGACT? [07-22_07:33:51:385] AT< +CGACT: 1,1 [07-22_07:33:51:385] AT< OK [07-22_07:34:06:393] AT> at+cops? [07-22_07:34:06:396] AT< +COPS: 0,2,"46000",7 [07-22_07:34:06:397] AT< OK [07-22_07:34:06:397] AT> at+qeng="servingcell" [07-22_07:34:06:404] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-88,-4,-81,14,39 [07-22_07:34:06:405] AT< OK [07-22_07:34:06:405] AT> AT+QNETDEVCTL? [07-22_07:34:06:408] AT< +QNETDEVCTL: 1,1,1,1 [07-22_07:34:06:408] AT< OK [07-22_07:34:06:408] AT> AT+CGACT? [07-22_07:34:06:412] AT< +CGACT: 1,1 [07-22_07:34:06:412] AT< OK需要注意的问题是，上述编译内核和驱动时，把这几个驱动模块usbserial.ko，usb_wwan.ko，option.ko等都单独编译成驱动模块了，默认开机启动时并没有加载。 所以如果上述移植都ok,但是插上usb的4G模块后还不认，可以lsmod指令看下有没加载这几个驱动模块。测试可进入/lib/modules/4.1.15-g3dc0a4b/kernel/drivers/usb/serial/目录下，通过insmod命令加载驱动到内核系统中。注意，这几个有先后依赖顺序，必须先insmod usbserial.ko,再 usb_wwan.ko,最后加载option.ko. 以上操作后，应该能够在/dev/目录下看到ttyUSB0等这几个设备节点。 可通过串口命令测试下AT指令，看看模块是否有响应。 通过串口发送AT命令 echo -e "AT+QCFG=\"usbnet\",0\r\n" > /dev/ttyUSB2 #设定模式或者使用mincom串口打开com口，看下模块的AT指令输出。 网关路由配置如果IP都已经自动获取到了还是无法联网，则需检查下路由对不对。
因为你的板子上可能用了以太网口，走的路由限制了。可以以下改下默认网关路由。 ip route show route del default route add default dev usb0 设置自启动脚本在Linux中，rc.local是一个启动脚本，位于/etc/rc.d/目录或/etc/init.d/目录下。它用于在系统启动时执行自定义命令或脚本。rc.local文件中的命令或脚本会在系统启动的最后阶段执行，可以用来执行一些需要在系统启动时运行的自定义任务。这些任务可以包括启动特定的服务、设置环境变量、挂载文件系统等。 rc.local文件的作用类似于其他Linux发行版中的/etc/rc.local文件，但在一些发行版中，如Ubuntu，已经不再默认提供rc.local文件。如果需要使用rc.local文件，可以自行创建并设置权限。 需要注意的是，rc.local文件中的命令或脚本应该是可执行的，并且应该在文件的末尾添加"exit 0"以确保正常退出。 在/etc/init.d/rc.local内容如下： #! /bin/sh ### BEGIN INIT INFO # Provides: rc.local # Required-Start: $all # Required-Stop: # Default-Start: 2 3 4 5 # Default-Stop: # Short-Description: Run /etc/rc.local if it exist ### END INIT INFO PATH=/sbin:/usr/sbin:/bin:/usr/bin do_start() { if [ -x /etc/rc.local ]; then echo -n "Running local boot scripts (/etc/rc.local)" /etc/rc.local [ $? = 0 ] && echo "." || echo "error" return $ES fi } case "$1" in start) do_start ;; restart|reload|force-reload) echo "Error: argument '$1' not supported" >&2 exit 3 ;; stop) ;; *) echo "Usage: $0 start|stop" >&2 exit 3 ;; esac在/etc/rc.local内容如下： #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. echo 30000 > /proc/sys/vm/min_free_kbytes source /etc/profile /opt/QDesktop >/dev/null 2>&1 & /etc/myuser.sh exit 0自定义的myuser.sh脚本，内容如下，后续有需要自定义开机启动的内容都可以在这里添加。 #!/bin/bash echo "=================user define shell exec..." insmod /lib/modules/$(uname -r)/kernel/drivers/usb/serial/usbserial.ko insmod /lib/modules/$(uname -r)/kernel/drivers/usb/serial/usb_wwan.ko insmod /lib/modules/$(uname -r)/kernel/drivers/usb/serial/option.ko ifconfig eth0 192.168.21.96 netmask 255.255.255.0 route add gw 192.168.21.1 route del default route add default dev usb0 quectel-CM & 其他资源嵌入式Linux驱动开发初级-内核模块编译方法_芬达在学习的博客-CSDN博客 https://www.cnblogs.com/dream397/p/13984263.html Linux内核模块(Module)的单独编译 - 知乎 Linux设备驱动之IIO子系统——IIO框架及IIO数据结构 iio子系统框架分析_chongyuzhao的博客-CSDN博客 一文带你深入了解Linux IIO 子系统_iio框架_Linux加油站的博客-CSDN博客 linux kernel iio 架构 https://i.vycc.cn/article/1164591.html FS4412开发板使用Linux IIO驱动框架实现ADC驱动 - 代码先锋网 Linux route 命令_mayue_csdn的博客-CSDN博客 正点原子IMX6U仓库 (GuangzhouXingyi) - Gitee.com |
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