iTOP4412开发板通过fastboot刷机后反复重启（无论刷自编译的镜像还是官方提供的都是如此），串口日志如下：
[ 7.500087] [D_INIT]init, FM init ok[ 7.503628] [D_INIT]mtk_fm_probe, FM probe ok[ 7.511610] [MTK-WIFI] WIFI_init: mtk_wmt_WIFI_chrdev driver(major 194) installed.[ 7.713484] [HIF-SDIO][I]mtk_wcn_hif_sdio_client_reg:start![ 7.735892] init: cannot find '/system/etc/install-recovery.sh', disabling 'flash_recovery'[ 7.748076] android_work: did not send uevent (0 0 (null))[ 7.752933] adb_bind_config[ 7.757960] adb_open[ 7.758683] ADB open:[ 7.761189] android_work: did not send uevent (0 0 (null))[ 7.848353] [WMT-DEV][I]WMT_open:major 190 minor 0 (pid 1273)[ 7.852726] [WMT-DEV][I]WMT_open:1st call (400)[ 7.857262] [mtk_wcn_stp_set_if_tx_type] set STP_IF_TX to UART.[ 7.863207] [WMT-LIB][I]wmt_lib_set_hif:new hifType:0, fcCtrl:0, baud:921600, fm:2 [ 7.871135] [WMT-C][I]opfunc_hif_conf:WMT H