[bsp][x86] fix file conflict

bsp/qemu-virt64-aarch64/.config

@@ -0,0 +1,585 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# RT-Thread Project Configuration
+#
+
+#
+# RT-Thread Kernel
+#
+CONFIG_RT_NAME_MAX=8
+# CONFIG_RT_USING_ARCH_DATA_TYPE is not set
+CONFIG_RT_USING_SMART=y
+# CONFIG_RT_USING_SMP is not set
+CONFIG_RT_ALIGN_SIZE=4
+# CONFIG_RT_THREAD_PRIORITY_8 is not set
+CONFIG_RT_THREAD_PRIORITY_32=y
+# CONFIG_RT_THREAD_PRIORITY_256 is not set
+CONFIG_RT_THREAD_PRIORITY_MAX=32
+CONFIG_RT_TICK_PER_SECOND=100
+CONFIG_RT_USING_OVERFLOW_CHECK=y
+CONFIG_RT_USING_HOOK=y
+CONFIG_RT_USING_IDLE_HOOK=y
+CONFIG_RT_IDLE_HOOK_LIST_SIZE=4
+CONFIG_IDLE_THREAD_STACK_SIZE=8192
+CONFIG_RT_USING_TIMER_SOFT=y
+CONFIG_RT_TIMER_THREAD_PRIO=4
+CONFIG_RT_TIMER_THREAD_STACK_SIZE=8192
+CONFIG_RT_DEBUG=y
+CONFIG_RT_DEBUG_COLOR=y
+# CONFIG_RT_DEBUG_INIT_CONFIG is not set
+# CONFIG_RT_DEBUG_THREAD_CONFIG is not set
+# CONFIG_RT_DEBUG_SCHEDULER_CONFIG is not set
+# CONFIG_RT_DEBUG_IPC_CONFIG is not set
+# CONFIG_RT_DEBUG_TIMER_CONFIG is not set
+# CONFIG_RT_DEBUG_IRQ_CONFIG is not set
+# CONFIG_RT_DEBUG_MEM_CONFIG is not set
+# CONFIG_RT_DEBUG_SLAB_CONFIG is not set
+# CONFIG_RT_DEBUG_MEMHEAP_CONFIG is not set
+# CONFIG_RT_DEBUG_MODULE_CONFIG is not set
+
+#
+# Inter-Thread communication
+#
+CONFIG_RT_USING_SEMAPHORE=y
+CONFIG_RT_USING_MUTEX=y
+CONFIG_RT_USING_EVENT=y
+CONFIG_RT_USING_MAILBOX=y
+CONFIG_RT_USING_MESSAGEQUEUE=y
+CONFIG_RT_USING_SIGNALS=y
+
+#
+# Memory Management
+#
+CONFIG_RT_USING_MEMPOOL=y
+CONFIG_RT_USING_MEMHEAP=y
+# CONFIG_RT_USING_NOHEAP is not set
+CONFIG_RT_USING_SMALL_MEM=y
+# CONFIG_RT_USING_SLAB is not set
+# CONFIG_RT_USING_MEMHEAP_AS_HEAP is not set
+CONFIG_RT_USING_MEMTRACE=y
+CONFIG_RT_USING_HEAP=y
+
+#
+# Kernel Device Object
+#
+CONFIG_RT_USING_DEVICE=y
+CONFIG_RT_USING_DEVICE_OPS=y
+CONFIG_RT_USING_INTERRUPT_INFO=y
+CONFIG_RT_USING_CONSOLE=y
+CONFIG_RT_CONSOLEBUF_SIZE=256
+CONFIG_RT_CONSOLE_DEVICE_NAME="uart0"
+CONFIG_RT_VER_NUM=0x50000
+CONFIG_ARCH_CPU_64BIT=y
+CONFIG_RT_USING_CACHE=y
+# CONFIG_RT_USING_CPU_FFS is not set
+# CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
+CONFIG_ARCH_ARM_MMU=y
+CONFIG_RT_USING_USERSPACE=y
+CONFIG_KERNEL_VADDR_START=0xffff000000000000
+CONFIG_PV_OFFSET=0x1000040000000
+CONFIG_ARCH_ARMV8=y
+
+#
+# RT-Thread Components
+#
+CONFIG_RT_USING_COMPONENTS_INIT=y
+CONFIG_RT_USING_USER_MAIN=y
+CONFIG_RT_MAIN_THREAD_STACK_SIZE=8192
+CONFIG_RT_MAIN_THREAD_PRIORITY=10
+
+#
+# C++ features
+#
+# CONFIG_RT_USING_CPLUSPLUS is not set
+
+#
+# Command shell
+#
+CONFIG_RT_USING_FINSH=y
+CONFIG_RT_USING_MSH=y
+CONFIG_FINSH_THREAD_NAME="tshell"
+CONFIG_FINSH_USING_HISTORY=y
+CONFIG_FINSH_HISTORY_LINES=10
+CONFIG_FINSH_USING_SYMTAB=y
+CONFIG_FINSH_USING_DESCRIPTION=y
+# CONFIG_FINSH_ECHO_DISABLE_DEFAULT is not set
+CONFIG_FINSH_THREAD_PRIORITY=20
+CONFIG_FINSH_THREAD_STACK_SIZE=4096
+CONFIG_FINSH_CMD_SIZE=256
+# CONFIG_FINSH_USING_AUTH is not set
+CONFIG_FINSH_ARG_MAX=10
+
+#
+# Device virtual file system
+#
+CONFIG_RT_USING_DFS=y
+CONFIG_DFS_USING_WORKDIR=y
+CONFIG_DFS_FILESYSTEMS_MAX=4
+CONFIG_DFS_FILESYSTEM_TYPES_MAX=8
+CONFIG_DFS_FD_MAX=32
+# CONFIG_RT_USING_DFS_MNTTABLE is not set
+# CONFIG_RT_USING_DFS_ELMFAT is not set
+CONFIG_RT_USING_DFS_DEVFS=y
+CONFIG_RT_USING_DFS_ROMFS=y
+# CONFIG_RT_USING_DFS_CROMFS is not set
+# CONFIG_RT_USING_DFS_RAMFS is not set
+# CONFIG_RT_USING_DFS_UFFS is not set
+# CONFIG_RT_USING_DFS_JFFS2 is not set
+
+#
+# Device Drivers
+#
+CONFIG_RT_USING_DEVICE_IPC=y
+CONFIG_RT_PIPE_BUFSZ=512
+# CONFIG_RT_USING_SYSTEM_WORKQUEUE is not set
+CONFIG_RT_USING_SERIAL=y
+CONFIG_RT_SERIAL_USING_DMA=y
+CONFIG_RT_SERIAL_RB_BUFSZ=256
+# CONFIG_RT_USING_CAN is not set
+# CONFIG_RT_USING_HWTIMER is not set
+# CONFIG_RT_USING_CPUTIME is not set
+# CONFIG_RT_USING_I2C is not set
+# CONFIG_RT_USING_PHY is not set
+CONFIG_RT_USING_PIN=y
+# CONFIG_RT_USING_ADC is not set
+# CONFIG_RT_USING_DAC is not set
+# CONFIG_RT_USING_NULL is not set
+# CONFIG_RT_USING_ZERO is not set
+# CONFIG_RT_USING_RANDOM is not set
+# CONFIG_RT_USING_PWM is not set
+# CONFIG_RT_USING_MTD_NOR is not set
+# CONFIG_RT_USING_MTD_NAND is not set
+# CONFIG_RT_USING_PM is not set
+# CONFIG_RT_USING_RTC is not set
+# CONFIG_RT_USING_SDIO is not set
+# CONFIG_RT_USING_SPI is not set
+# CONFIG_RT_USING_WDT is not set
+# CONFIG_RT_USING_AUDIO is not set
+# CONFIG_RT_USING_SENSOR is not set
+# CONFIG_RT_USING_TOUCH is not set
+# CONFIG_RT_USING_HWCRYPTO is not set
+# CONFIG_RT_USING_PULSE_ENCODER is not set
+# CONFIG_RT_USING_INPUT_CAPTURE is not set
+# CONFIG_RT_USING_WIFI is not set
+
+#
+# Using USB
+#
+# CONFIG_RT_USING_USB_HOST is not set
+# CONFIG_RT_USING_USB_DEVICE is not set
+
+#
+# POSIX layer and C standard library
+#
+CONFIG_RT_USING_LIBC=y
+# CONFIG_RT_USING_NEWLIB is not set
+CONFIG_RT_USING_MUSL=y
+# CONFIG_RT_USING_PTHREADS is not set
+CONFIG_RT_USING_POSIX=y
+# CONFIG_RT_USING_POSIX_MMAP is not set
+# CONFIG_RT_USING_POSIX_TERMIOS is not set
+# CONFIG_RT_USING_POSIX_GETLINE is not set
+# CONFIG_RT_USING_POSIX_AIO is not set
+CONFIG_RT_USING_POSIX_CLOCKTIME=y
+# CONFIG_RT_USING_MODULE is not set
+
+#
+# Network
+#
+
+#
+# Socket abstraction layer
+#
+# CONFIG_RT_USING_SAL is not set
+
+#
+# Network interface device
+#
+# CONFIG_RT_USING_NETDEV is not set
+
+#
+# light weight TCP/IP stack
+#
+# CONFIG_RT_USING_LWIP is not set
+
+#
+# AT commands
+#
+# CONFIG_RT_USING_AT is not set
+
+#
+# VBUS(Virtual Software BUS)
+#
+# CONFIG_RT_USING_VBUS is not set
+
+#
+# Utilities
+#
+# CONFIG_RT_USING_RYM is not set
+# CONFIG_RT_USING_ULOG is not set
+# CONFIG_RT_USING_UTEST is not set
+# CONFIG_RT_USING_RT_LINK is not set
+CONFIG_RT_USING_LWP=y
+CONFIG_RT_LWP_MAX_NR=30
+CONFIG_LWP_TASK_STACK_SIZE=16384
+CONFIG_RT_CH_MSG_MAX_NR=1024
+CONFIG_RT_LWP_SHM_MAX_NR=64
+CONFIG_LWP_CONSOLE_INPUT_BUFFER_SIZE=1024
+CONFIG_LWP_TID_MAX_NR=64
+# CONFIG_LWP_UNIX98_PTY is not set
+
+#
+# RT-Thread online packages
+#
+
+#
+# IoT - internet of things
+#
+# CONFIG_PKG_USING_LORAWAN_DRIVER is not set
+# CONFIG_PKG_USING_PAHOMQTT is not set
+# CONFIG_PKG_USING_UMQTT is not set
+# CONFIG_PKG_USING_WEBCLIENT is not set
+# CONFIG_PKG_USING_WEBNET is not set
+# CONFIG_PKG_USING_MONGOOSE is not set
+# CONFIG_PKG_USING_MYMQTT is not set
+# CONFIG_PKG_USING_KAWAII_MQTT is not set
+# CONFIG_PKG_USING_BC28_MQTT is not set
+# CONFIG_PKG_USING_WEBTERMINAL is not set
+# CONFIG_PKG_USING_CJSON is not set
+# CONFIG_PKG_USING_JSMN is not set
+# CONFIG_PKG_USING_LIBMODBUS is not set
+# CONFIG_PKG_USING_FREEMODBUS is not set
+# CONFIG_PKG_USING_LJSON is not set
+# CONFIG_PKG_USING_EZXML is not set
+# CONFIG_PKG_USING_NANOPB is not set
+
+#
+# Wi-Fi
+#
+
+#
+# Marvell WiFi
+#
+# CONFIG_PKG_USING_WLANMARVELL is not set
+
+#
+# Wiced WiFi
+#
+# CONFIG_PKG_USING_WLAN_WICED is not set
+# CONFIG_PKG_USING_RW007 is not set
+# CONFIG_PKG_USING_COAP is not set
+# CONFIG_PKG_USING_NOPOLL is not set
+# CONFIG_PKG_USING_NETUTILS is not set
+# CONFIG_PKG_USING_CMUX is not set
+# CONFIG_PKG_USING_PPP_DEVICE is not set
+# CONFIG_PKG_USING_AT_DEVICE is not set
+# CONFIG_PKG_USING_ATSRV_SOCKET is not set
+# CONFIG_PKG_USING_WIZNET is not set
+
+#
+# IoT Cloud
+#
+# CONFIG_PKG_USING_ONENET is not set
+# CONFIG_PKG_USING_GAGENT_CLOUD is not set
+# CONFIG_PKG_USING_ALI_IOTKIT is not set
+# CONFIG_PKG_USING_AZURE is not set
+# CONFIG_PKG_USING_TENCENT_IOT_EXPLORER is not set
+# CONFIG_PKG_USING_JIOT-C-SDK is not set
+# CONFIG_PKG_USING_UCLOUD_IOT_SDK is not set
+# CONFIG_PKG_USING_JOYLINK is not set
+# CONFIG_PKG_USING_NIMBLE is not set
+# CONFIG_PKG_USING_OTA_DOWNLOADER is not set
+# CONFIG_PKG_USING_IPMSG is not set
+# CONFIG_PKG_USING_LSSDP is not set
+# CONFIG_PKG_USING_AIRKISS_OPEN is not set
+# CONFIG_PKG_USING_LIBRWS is not set
+# CONFIG_PKG_USING_TCPSERVER is not set
+# CONFIG_PKG_USING_PROTOBUF_C is not set
+# CONFIG_PKG_USING_DLT645 is not set
+# CONFIG_PKG_USING_QXWZ is not set
+# CONFIG_PKG_USING_SMTP_CLIENT is not set
+# CONFIG_PKG_USING_ABUP_FOTA is not set
+# CONFIG_PKG_USING_LIBCURL2RTT is not set
+# CONFIG_PKG_USING_CAPNP is not set
+# CONFIG_PKG_USING_RT_CJSON_TOOLS is not set
+# CONFIG_PKG_USING_AGILE_TELNET is not set
+# CONFIG_PKG_USING_NMEALIB is not set
+# CONFIG_PKG_USING_AGILE_JSMN is not set
+# CONFIG_PKG_USING_PDULIB is not set
+# CONFIG_PKG_USING_BTSTACK is not set
+# CONFIG_PKG_USING_LORAWAN_ED_STACK is not set
+# CONFIG_PKG_USING_WAYZ_IOTKIT is not set
+# CONFIG_PKG_USING_MAVLINK is not set
+# CONFIG_PKG_USING_RAPIDJSON is not set
+# CONFIG_PKG_USING_BSAL is not set
+# CONFIG_PKG_USING_AGILE_MODBUS is not set
+# CONFIG_PKG_USING_AGILE_FTP is not set
+# CONFIG_PKG_USING_EMBEDDEDPROTO is not set
+
+#
+# security packages
+#
+# CONFIG_PKG_USING_MBEDTLS is not set
+# CONFIG_PKG_USING_libsodium is not set
+# CONFIG_PKG_USING_TINYCRYPT is not set
+# CONFIG_PKG_USING_TFM is not set
+# CONFIG_PKG_USING_YD_CRYPTO is not set
+
+#
+# language packages
+#
+# CONFIG_PKG_USING_LUA is not set
+# CONFIG_PKG_USING_JERRYSCRIPT is not set
+# CONFIG_PKG_USING_MICROPYTHON is not set
+
+#
+# multimedia packages
+#
+# CONFIG_PKG_USING_OPENMV is not set
+# CONFIG_PKG_USING_MUPDF is not set
+# CONFIG_PKG_USING_STEMWIN is not set
+# CONFIG_PKG_USING_WAVPLAYER is not set
+# CONFIG_PKG_USING_TJPGD is not set
+# CONFIG_PKG_USING_PDFGEN is not set
+# CONFIG_PKG_USING_HELIX is not set
+# CONFIG_PKG_USING_AZUREGUIX is not set
+# CONFIG_PKG_USING_TOUCHGFX2RTT is not set
+# CONFIG_PKG_USING_NUEMWIN is not set
+# CONFIG_PKG_USING_MP3PLAYER is not set
+
+#
+# tools packages
+#
+# CONFIG_PKG_USING_CMBACKTRACE is not set
+# CONFIG_PKG_USING_EASYFLASH is not set
+# CONFIG_PKG_USING_EASYLOGGER is not set
+# CONFIG_PKG_USING_SYSTEMVIEW is not set
+# CONFIG_PKG_USING_SEGGER_RTT is not set
+# CONFIG_PKG_USING_RDB is not set
+# CONFIG_PKG_USING_QRCODE is not set
+# CONFIG_PKG_USING_ULOG_EASYFLASH is not set
+# CONFIG_PKG_USING_ULOG_FILE is not set
+# CONFIG_PKG_USING_LOGMGR is not set
+# CONFIG_PKG_USING_ADBD is not set
+# CONFIG_PKG_USING_COREMARK is not set
+# CONFIG_PKG_USING_DHRYSTONE is not set
+# CONFIG_PKG_USING_MEMORYPERF is not set
+# CONFIG_PKG_USING_NR_MICRO_SHELL is not set
+# CONFIG_PKG_USING_CHINESE_FONT_LIBRARY is not set
+# CONFIG_PKG_USING_LUNAR_CALENDAR is not set
+# CONFIG_PKG_USING_BS8116A is not set
+# CONFIG_PKG_USING_GPS_RMC is not set
+# CONFIG_PKG_USING_URLENCODE is not set
+# CONFIG_PKG_USING_UMCN is not set
+# CONFIG_PKG_USING_LWRB2RTT is not set
+# CONFIG_PKG_USING_CPU_USAGE is not set
+# CONFIG_PKG_USING_GBK2UTF8 is not set
+# CONFIG_PKG_USING_VCONSOLE is not set
+# CONFIG_PKG_USING_KDB is not set
+# CONFIG_PKG_USING_WAMR is not set
+# CONFIG_PKG_USING_MICRO_XRCE_DDS_CLIENT is not set
+# CONFIG_PKG_USING_LWLOG is not set
+# CONFIG_PKG_USING_ANV_TRACE is not set
+# CONFIG_PKG_USING_ANV_MEMLEAK is not set
+# CONFIG_PKG_USING_ANV_TESTSUIT is not set
+# CONFIG_PKG_USING_ANV_BENCH is not set
+# CONFIG_PKG_USING_DEVMEM is not set
+# CONFIG_PKG_USING_REGEX is not set
+# CONFIG_PKG_USING_MEM_SANDBOX is not set
+# CONFIG_PKG_USING_SOLAR_TERMS is not set
+# CONFIG_PKG_USING_GAN_ZHI is not set
+
+#
+# system packages
+#
+
+#
+# acceleration: Assembly language or algorithmic acceleration packages
+#
+# CONFIG_PKG_USING_RT_MEMCPY_CM is not set
+# CONFIG_PKG_USING_QFPLIB_M0_FULL is not set
+# CONFIG_PKG_USING_QFPLIB_M0_TINY is not set
+# CONFIG_PKG_USING_QFPLIB_M3 is not set
+
+#
+# Micrium: Micrium software products porting for RT-Thread
+#
+# CONFIG_PKG_USING_UCOSIII_WRAPPER is not set
+# CONFIG_PKG_USING_UCOSII_WRAPPER is not set
+# CONFIG_PKG_USING_UC_CRC is not set
+# CONFIG_PKG_USING_UC_CLK is not set
+# CONFIG_PKG_USING_UC_COMMON is not set
+# CONFIG_PKG_USING_UC_MODBUS is not set
+# CONFIG_PKG_USING_GUIENGINE is not set
+# CONFIG_PKG_USING_CAIRO is not set
+# CONFIG_PKG_USING_PIXMAN is not set
+# CONFIG_PKG_USING_PARTITION is not set
+# CONFIG_PKG_USING_FAL is not set
+# CONFIG_PKG_USING_FLASHDB is not set
+# CONFIG_PKG_USING_SQLITE is not set
+# CONFIG_PKG_USING_RTI is not set
+# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
+# CONFIG_PKG_USING_CMSIS is not set
+# CONFIG_PKG_USING_DFS_YAFFS is not set
+# CONFIG_PKG_USING_LITTLEFS is not set
+# CONFIG_PKG_USING_DFS_JFFS2 is not set
+# CONFIG_PKG_USING_DFS_UFFS is not set
+# CONFIG_PKG_USING_LWEXT4 is not set
+# CONFIG_PKG_USING_THREAD_POOL is not set
+# CONFIG_PKG_USING_ROBOTS is not set
+# CONFIG_PKG_USING_EV is not set
+# CONFIG_PKG_USING_SYSWATCH is not set
+# CONFIG_PKG_USING_SYS_LOAD_MONITOR is not set
+# CONFIG_PKG_USING_PLCCORE is not set
+# CONFIG_PKG_USING_RAMDISK is not set
+# CONFIG_PKG_USING_MININI is not set
+# CONFIG_PKG_USING_QBOOT is not set
+# CONFIG_PKG_USING_PPOOL is not set
+# CONFIG_PKG_USING_OPENAMP is not set
+# CONFIG_PKG_USING_RT_KPRINTF_THREADSAFE is not set
+# CONFIG_PKG_USING_LPM is not set
+# CONFIG_PKG_USING_TLSF is not set
+# CONFIG_PKG_USING_EVENT_RECORDER is not set
+
+#
+# peripheral libraries and drivers
+#
+# CONFIG_PKG_USING_SENSORS_DRIVERS is not set
+# CONFIG_PKG_USING_REALTEK_AMEBA is not set
+# CONFIG_PKG_USING_SHT2X is not set
+# CONFIG_PKG_USING_SHT3X is not set
+# CONFIG_PKG_USING_AS7341 is not set
+# CONFIG_PKG_USING_STM32_SDIO is not set
+# CONFIG_PKG_USING_ICM20608 is not set
+# CONFIG_PKG_USING_U8G2 is not set
+# CONFIG_PKG_USING_BUTTON is not set
+# CONFIG_PKG_USING_PCF8574 is not set
+# CONFIG_PKG_USING_SX12XX is not set
+# CONFIG_PKG_USING_SIGNAL_LED is not set
+# CONFIG_PKG_USING_LEDBLINK is not set
+# CONFIG_PKG_USING_LITTLED is not set
+# CONFIG_PKG_USING_LKDGUI is not set
+# CONFIG_PKG_USING_NRF5X_SDK is not set
+# CONFIG_PKG_USING_NRFX is not set
+# CONFIG_PKG_USING_WM_LIBRARIES is not set
+# CONFIG_PKG_USING_KENDRYTE_SDK is not set
+# CONFIG_PKG_USING_INFRARED is not set
+# CONFIG_PKG_USING_AGILE_BUTTON is not set
+# CONFIG_PKG_USING_AGILE_LED is not set
+# CONFIG_PKG_USING_AT24CXX is not set
+# CONFIG_PKG_USING_MOTIONDRIVER2RTT is not set
+# CONFIG_PKG_USING_AD7746 is not set
+# CONFIG_PKG_USING_PCA9685 is not set
+# CONFIG_PKG_USING_I2C_TOOLS is not set
+# CONFIG_PKG_USING_NRF24L01 is not set
+# CONFIG_PKG_USING_TOUCH_DRIVERS is not set
+# CONFIG_PKG_USING_MAX17048 is not set
+# CONFIG_PKG_USING_RPLIDAR is not set
+# CONFIG_PKG_USING_AS608 is not set
+# CONFIG_PKG_USING_RC522 is not set
+# CONFIG_PKG_USING_WS2812B is not set
+# CONFIG_PKG_USING_EMBARC_BSP is not set
+# CONFIG_PKG_USING_EXTERN_RTC_DRIVERS is not set
+# CONFIG_PKG_USING_MULTI_RTIMER is not set
+# CONFIG_PKG_USING_MAX7219 is not set
+# CONFIG_PKG_USING_BEEP is not set
+# CONFIG_PKG_USING_EASYBLINK is not set
+# CONFIG_PKG_USING_PMS_SERIES is not set
+# CONFIG_PKG_USING_CAN_YMODEM is not set
+# CONFIG_PKG_USING_LORA_RADIO_DRIVER is not set
+# CONFIG_PKG_USING_QLED is not set
+# CONFIG_PKG_USING_PAJ7620 is not set
+# CONFIG_PKG_USING_AGILE_CONSOLE is not set
+# CONFIG_PKG_USING_LD3320 is not set
+# CONFIG_PKG_USING_WK2124 is not set
+# CONFIG_PKG_USING_LY68L6400 is not set
+# CONFIG_PKG_USING_DM9051 is not set
+# CONFIG_PKG_USING_SSD1306 is not set
+# CONFIG_PKG_USING_QKEY is not set
+# CONFIG_PKG_USING_RS485 is not set
+# CONFIG_PKG_USING_NES is not set
+# CONFIG_PKG_USING_VIRTUAL_SENSOR is not set
+# CONFIG_PKG_USING_VDEVICE is not set
+# CONFIG_PKG_USING_SGM706 is not set
+# CONFIG_PKG_USING_STM32WB55_SDK is not set
+# CONFIG_PKG_USING_RDA58XX is not set
+# CONFIG_PKG_USING_LIBNFC is not set
+# CONFIG_PKG_USING_MFOC is not set
+# CONFIG_PKG_USING_TMC51XX is not set
+# CONFIG_PKG_USING_TCA9534 is not set
+# CONFIG_PKG_USING_KOBUKI is not set
+# CONFIG_PKG_USING_ROSSERIAL is not set
+# CONFIG_PKG_USING_MICRO_ROS is not set
+
+#
+# AI packages
+#
+# CONFIG_PKG_USING_LIBANN is not set
+# CONFIG_PKG_USING_NNOM is not set
+# CONFIG_PKG_USING_ONNX_BACKEND is not set
+# CONFIG_PKG_USING_ONNX_PARSER is not set
+# CONFIG_PKG_USING_TENSORFLOWLITEMICRO is not set
+# CONFIG_PKG_USING_ELAPACK is not set
+# CONFIG_PKG_USING_ULAPACK is not set
+# CONFIG_PKG_USING_QUEST is not set
+# CONFIG_PKG_USING_NAXOS is not set
+
+#
+# miscellaneous packages
+#
+# CONFIG_PKG_USING_LIBCSV is not set
+# CONFIG_PKG_USING_OPTPARSE is not set
+# CONFIG_PKG_USING_FASTLZ is not set
+# CONFIG_PKG_USING_MINILZO is not set
+# CONFIG_PKG_USING_QUICKLZ is not set
+# CONFIG_PKG_USING_LZMA is not set
+# CONFIG_PKG_USING_MULTIBUTTON is not set
+# CONFIG_PKG_USING_FLEXIBLE_BUTTON is not set
+# CONFIG_PKG_USING_CANFESTIVAL is not set
+# CONFIG_PKG_USING_ZLIB is not set
+# CONFIG_PKG_USING_MINIZIP is not set
+# CONFIG_PKG_USING_DSTR is not set
+# CONFIG_PKG_USING_TINYFRAME is not set
+# CONFIG_PKG_USING_KENDRYTE_DEMO is not set
+# CONFIG_PKG_USING_DIGITALCTRL is not set
+# CONFIG_PKG_USING_UPACKER is not set
+# CONFIG_PKG_USING_UPARAM is not set
+
+#
+# samples: kernel and components samples
+#
+# CONFIG_PKG_USING_KERNEL_SAMPLES is not set
+# CONFIG_PKG_USING_FILESYSTEM_SAMPLES is not set
+# CONFIG_PKG_USING_NETWORK_SAMPLES is not set
+# CONFIG_PKG_USING_PERIPHERAL_SAMPLES is not set
+# CONFIG_PKG_USING_HELLO is not set
+# CONFIG_PKG_USING_VI is not set
+# CONFIG_PKG_USING_KI is not set
+# CONFIG_PKG_USING_ARMv7M_DWT is not set
+# CONFIG_PKG_USING_VT100 is not set
+# CONFIG_PKG_USING_UKAL is not set
+# CONFIG_PKG_USING_CRCLIB is not set
+
+#
+# entertainment: terminal games and other interesting software packages
+#
+# CONFIG_PKG_USING_THREES is not set
+# CONFIG_PKG_USING_2048 is not set
+# CONFIG_PKG_USING_SNAKE is not set
+# CONFIG_PKG_USING_TETRIS is not set
+# CONFIG_PKG_USING_DONUT is not set
+# CONFIG_PKG_USING_ACLOCK is not set
+# CONFIG_PKG_USING_LWGPS is not set
+# CONFIG_PKG_USING_STATE_MACHINE is not set
+# CONFIG_PKG_USING_MCURSES is not set
+# CONFIG_PKG_USING_COWSAY is not set
+CONFIG_SOC_VIRT64_AARCH64=y
+
+#
+# AARCH64 qemu virt64 configs
+#
+CONFIG_BSP_SUPPORT_FPU=y
+CONFIG_BSP_USING_UART=y
+CONFIG_RT_USING_UART0=y
+CONFIG_BSP_USING_GIC=y
+CONFIG_BSP_USING_GIC390=y

bsp/qemu-virt64-aarch64/Kconfig

@@ -0,0 +1,34 @@
+mainmenu "RT-Thread Project Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../../"
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+
+config SOC_VIRT64_AARCH64
+    bool
+    select ARCH_ARMV8
+    select ARCH_CPU_64BIT
+    select ARCH_ARM_MMU
+    select RT_USING_CACHE
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    select RT_USING_GIC
+    select BSP_USING_GIC
+    select BSP_USING_GIC390
+    default y
+
+source "$BSP_DIR/drivers/Kconfig"

bsp/qemu-virt64-aarch64/README.md

@@ -0,0 +1,59 @@
+# QEMU/virt aarch64板级支持包说明
+
+## 1. 简介
+
+The virt board is a platform which does not correspond to any real hardware; it is designed for use in virtual machines.
+
+Supported guest CPU types:
+cortex-a7 (32-bit)
+cortex-a15 (32-bit; the default)
+cortex-a53 (64-bit)
+cortex-a57 (64-bit)
+cortex-a72 (64-bit)
+host (with KVM only)
+max (same as host for KVM; best possible emulation with TCG)
+
+Guest code can rely on and hard-code the following addresses:
+Flash memory starts at address 0x0000_0000
+RAM starts at 0x4000_0000
+
+## 2. 编译说明
+
+推荐使用[env工具][2]，可以在console下进入到`bsp/qemu-virt64-aarch64`目录中，运行以下命令：
+
+    scons
+
+来编译这个板级支持包。如果编译正确无误，会产生rtthread.elf、rtthread.bin文件。
+
+**注：** RT-Thread/ENV中携带的工具版本是：
+
+    gcc version 5.4.1 20160919 (release) [ARM/embedded-5-branch revision 240496]
+
+如果在Linux下使用，请自行下载[GNU GCC工具链][3]。
+
+## 3. 执行
+
+当要执行编译好的RT-Thread时，在这个bsp目录下已经提供了运行脚本文件：qemu.bat/qemu.sh
+
+这个执行脚本默认把串口输出到stdio（即控制台）上，所以直接执行脚本后就可以输出结果了。
+
+```text
+ \ | /
+- RT -     Thread Smart Operating System
+ / | \     5.0.0 build Aug 18 2021
+ 2006 - 2020 Copyright by rt-thread team
+hello rt-thread
+msh />
+```
+
+## 4. 支持情况
+
+| 驱动 | 支持情况  |  备注  |
+| ------ | ----  | :------:  |
+| UART | 支持 | UART0 |
+| SD/MMC | 不支持 |  |
+| CLCD | 不支持 |  |
+| Key | 不支持 |  |
+| Mouse | 不支持 |  |
+| EMAC | 不支持 |  |
+

bsp/qemu-virt64-aarch64/SConscript

@@ -0,0 +1,14 @@
+# for module compiling
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')

bsp/qemu-virt64-aarch64/SConstruct

@@ -0,0 +1,44 @@
+import os
+import sys
+import rtconfig
+import re
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.join(os.getcwd(), '..', '..')
+
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+from building import *
+
+TARGET = 'rtthread.' + rtconfig.TARGET_EXT
+TRACE_CONFIG = ""
+
+content = ""
+with open("rtconfig.h") as f:
+	for line in f.readlines():
+		if line.find("RT_BACKTRACE_FUNCTION_NAME") != -1:
+			for token in line.split(" "):
+				if re.match(r'RT_BACKTRACE_FUNCTION_NAME$', token, flags=0):
+					TRACE_CONFIG = " "
+
+DefaultEnvironment(tools=[])
+env = Environment(tools = ['mingw'],
+    AS   = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS + TRACE_CONFIG,
+    CC   = rtconfig.CC, CFLAGS = rtconfig.CFLAGS + TRACE_CONFIG,
+    CXX  = rtconfig.CXX, CXXFLAGS = rtconfig.CXXFLAGS  + TRACE_CONFIG,
+    AR   = rtconfig.AR, ARFLAGS = '-rc',
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+env['ASCOM'] = env['ASPPCOM']
+env['LINKCOM'] = '$LINK -o $TARGET $LINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS -Wl,--start-group $_LIBFLAGS -Wl,--end-group'
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT)
+
+# make a building
+DoBuilding(TARGET, objs)

bsp/qemu-virt64-aarch64/applications/SConscript

@@ -0,0 +1,9 @@
+from building import *
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c') + Glob('*.cpp')
+CPPPATH = [cwd]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')

bsp/qemu-virt64-aarch64/applications/main.c

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020/10/7      bernard      the first version
+ */
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("hello rt-thread\n");
+
+    return 0;
+}

bsp/qemu-virt64-aarch64/applications/mnt.c

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021/08/19     bernard      the first version
+ */
+
+#include <rtthread.h>
+
+#ifdef RT_USING_DFS
+#include <dfs_fs.h>
+#include <dfs_romfs.h>
+
+int mnt_init(void)
+{
+    if (dfs_mount(RT_NULL, "/", "rom", 0, &romfs_root) != 0)
+    {
+        rt_kprintf("Dir / mount failed!\n");
+        return -1;
+    }
+
+    rt_kprintf("file system initialization done!\n");
+    return 0;
+}
+INIT_ENV_EXPORT(mnt_init);
+#endif

bsp/qemu-virt64-aarch64/drivers/Kconfig

@@ -0,0 +1,25 @@
+
+menu "AARCH64 qemu virt64 configs"
+    menuconfig BSP_SUPPORT_FPU
+        bool "Using Float"
+        default y
+
+    menuconfig BSP_USING_UART
+        bool "Using UART"
+        select RT_USING_SERIAL
+        default y
+
+        if BSP_USING_UART
+            config RT_USING_UART0
+            bool "Enabel UART 0"
+            default y
+        endif
+
+    config BSP_USING_GIC
+    bool
+    default y
+
+    config BSP_USING_GIC390
+    bool
+    default y
+endmenu

bsp/qemu-virt64-aarch64/drivers/SConscript

@@ -0,0 +1,14 @@
+# RT-Thread building script for component
+
+from building import *
+
+cwd     = GetCurrentDir()
+src     = Split('''
+board.c
+drv_uart.c
+''')
+CPPPATH = [cwd]
+
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')

bsp/qemu-virt64-aarch64/drivers/board.c

@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2012-11-20     Bernard    the first version
+ * 2018-11-22     Jesven     add rt_hw_spin_lock
+ *                           add rt_hw_spin_unlock
+ *                           add smp ipi init
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+#include <mmu.h>
+#ifdef RT_USING_USERSPACE
+#include <page.h>
+#include <lwp_arch.h>
+#endif
+#include "board.h"
+
+#ifdef RT_USING_USERSPACE
+struct mem_desc platform_mem_desc[] = {
+    {KERNEL_VADDR_START, KERNEL_VADDR_START + 0x0fffffff, KERNEL_VADDR_START + PV_OFFSET, NORMAL_MEM}
+};
+#else
+struct mem_desc platform_mem_desc[] = {
+    {0x10000000, 0x50000000, 0x10000000, DEVICE_MEM},
+    {0x40000000, 0x50000000, 0x40000000, NORMAL_MEM}
+};
+#endif
+
+const rt_uint32_t platform_mem_desc_size = sizeof(platform_mem_desc)/sizeof(platform_mem_desc[0]);
+
+#define SYS_CTRL                        __REG32(REALVIEW_SCTL_BASE)
+
+extern void rt_hw_ipi_handler_install(int ipi_vector, rt_isr_handler_t ipi_isr_handler);
+
+void idle_wfi(void)
+{
+    asm volatile ("wfi");
+}
+
+/**
+ * This function will initialize board
+ */
+
+rt_mmu_info mmu_info;
+
+extern size_t MMUTable[];
+
+#ifdef RT_USING_USERSPACE
+rt_region_t init_page_region = {
+    PAGE_START,
+    PAGE_END,
+};
+#endif
+
+void rt_hw_board_init(void)
+{
+#ifdef RT_USING_USERSPACE
+    rt_page_init(init_page_region);
+
+    rt_hw_mmu_setup(platform_mem_desc, platform_mem_desc_size);
+
+    rt_hw_mmu_map_init(&mmu_info, (void*)0xfffffffff0000000, 0x10000000, MMUTable, PV_OFFSET);
+
+    arch_kuser_init(&mmu_info, (void*)0xffffffffffff0000);
+#else
+    rt_hw_mmu_map_init(&mmu_info, (void*)0x80000000, 0x10000000, MMUTable, 0);
+    rt_hw_mmu_ioremap_init(&mmu_info, (void*)0x80000000, 0x10000000);
+#endif
+
+    /* initialize hardware interrupt */
+    rt_hw_interrupt_init();
+
+    /* initialize system heap */
+    rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
+
+    rt_components_board_init();
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+
+    rt_thread_idle_sethook(idle_wfi);
+
+#ifdef RT_USING_SMP
+    /* install IPI handle */
+    rt_hw_ipi_handler_install(RT_SCHEDULE_IPI, rt_scheduler_ipi_handler);
+#endif
+}

bsp/qemu-virt64-aarch64/drivers/board.h

@@ -0,0 +1,70 @@
+/*
+ * File      : board.h
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2013-07-06     Bernard    the first version
+ */
+
+#ifndef __BOARD_H__
+#define __BOARD_H__
+
+#include <rtconfig.h>
+#include <stdlib.h>
+#include "mmu.h"
+#include "ioremap.h"
+
+extern unsigned char __bss_start;
+extern unsigned char __bss_end;
+
+#define HEAP_BEGIN      ((void*)&__bss_end)
+
+#ifdef RT_USING_USERSPACE
+#define HEAP_END        ((size_t)KERNEL_VADDR_START + 16 * 1024 * 1024)
+#define PAGE_START      HEAP_END
+#define PAGE_END        ((size_t)KERNEL_VADDR_START + 128 * 1024 * 1024)
+#else
+#define HEAP_END        ((size_t)0x40000000 + 64 * 1024 * 1024)
+#endif
+
+#define __REG32(x)  (*((volatile unsigned int *)(x)))
+#define __REG16(x)  (*((volatile unsigned short *)(x)))
+
+/* UART PL011 */
+#define PL011_UARTDR                (0x000)
+#define PL011_UARTFR                (0x018)
+#define PL011_UARTFR_TXFF_BIT       (5)
+#define PL011_UART0_BASE            (0x09000000)
+#define PL011_UART0_SIZE            (0x00001000)
+#define PL011_UART0_IRQNUM          (33)
+
+/* GIC PL390 DIST and CPU */
+#define GIC_PL390_DISTRIBUTOR_PPTR  (0x08000000)
+#define GIC_PL390_CONTROLLER_PPTR   (0x08010000)
+
+#define MAX_HANDLERS     (96)
+#define GIC_IRQ_START   (0)
+/* number of interrupts on board */
+#define ARM_GIC_NR_IRQS     (96)
+/* only one GIC available */
+#define ARM_GIC_MAX_NR      (1)
+
+/* the basic constants and interfaces needed by gic */
+rt_inline rt_uint64_t platform_get_gic_dist_base(void)
+{
+    return GIC_PL390_DISTRIBUTOR_PPTR;
+}
+
+rt_inline rt_uint64_t platform_get_gic_cpu_base(void)
+{
+    return GIC_PL390_CONTROLLER_PPTR;
+}
+
+void rt_hw_board_init(void);
+
+extern rt_mmu_info mmu_info;
+
+#endif

bsp/qemu-virt64-aarch64/drivers/drv_uart.c

@@ -0,0 +1,144 @@
+/*
+ * serial.c UART driver
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2013-03-30     Bernard      the first verion
+ */
+
+#include <rthw.h>
+#include <rtdevice.h>
+
+#include "board.h"
+#include "mmu.h"
+
+struct hw_uart_device
+{
+    rt_size_t hw_base;
+    rt_size_t irqno;
+};
+
+#define UART_DR(base)   __REG32(base + 0x00)
+#define UART_FR(base)   __REG32(base + 0x18)
+#define UART_CR(base)   __REG32(base + 0x30)
+#define UART_IMSC(base) __REG32(base + 0x38)
+#define UART_ICR(base)  __REG32(base + 0x44)
+
+#define UARTFR_RXFE     0x10
+#define UARTFR_TXFF     0x20
+#define UARTIMSC_RXIM   0x10
+#define UARTIMSC_TXIM   0x20
+#define UARTICR_RXIC    0x10
+#define UARTICR_TXIC    0x20
+
+static void rt_hw_uart_isr(int irqno, void *param)
+{
+    struct rt_serial_device *serial = (struct rt_serial_device *)param;
+
+    rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
+}
+
+static rt_err_t uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
+{
+    return RT_EOK;
+}
+
+static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg)
+{
+    struct hw_uart_device *uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct hw_uart_device *)serial->parent.user_data;
+
+    switch (cmd)
+    {
+    case RT_DEVICE_CTRL_CLR_INT:
+        /* disable rx irq */
+        UART_IMSC(uart->hw_base) &= ~UARTIMSC_RXIM;
+        break;
+
+    case RT_DEVICE_CTRL_SET_INT:
+        /* enable rx irq */
+        UART_IMSC(uart->hw_base) |= UARTIMSC_RXIM;
+        rt_hw_interrupt_umask(uart->irqno);
+        break;
+    }
+
+    return RT_EOK;
+}
+
+static int uart_putc(struct rt_serial_device *serial, char c)
+{
+    struct hw_uart_device *uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct hw_uart_device *)serial->parent.user_data;
+
+    while (UART_FR(uart->hw_base) & UARTFR_TXFF);
+    UART_DR(uart->hw_base) = c;
+
+    return 1;
+}
+
+static int uart_getc(struct rt_serial_device *serial)
+{
+    int ch;
+    struct hw_uart_device *uart;
+
+    RT_ASSERT(serial != RT_NULL);
+    uart = (struct hw_uart_device *)serial->parent.user_data;
+
+    ch = -1;
+    if (!(UART_FR(uart->hw_base) & UARTFR_RXFE))
+    {
+        ch = UART_DR(uart->hw_base) & 0xff;
+    }
+
+    return ch;
+}
+
+static const struct rt_uart_ops _uart_ops =
+{
+    uart_configure,
+    uart_control,
+    uart_putc,
+    uart_getc,
+};
+
+#ifdef RT_USING_UART0
+/* UART device driver structure */
+static struct hw_uart_device _uart0_device =
+{
+    PL011_UART0_BASE,
+    PL011_UART0_IRQNUM,
+};
+static struct rt_serial_device _serial0;
+#endif
+
+int rt_hw_uart_init(void)
+{
+    struct hw_uart_device *uart;
+    struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
+
+#ifdef RT_USING_UART0
+    _uart0_device.hw_base = (rt_size_t)rt_ioremap((void*)_uart0_device.hw_base, PL011_UART0_SIZE);
+    uart = &_uart0_device;
+
+    _serial0.ops    = &_uart_ops;
+    _serial0.config = config;
+
+    /* register UART1 device */
+    rt_hw_serial_register(&_serial0, "uart0",
+                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
+                          uart);
+    rt_hw_interrupt_install(uart->irqno, rt_hw_uart_isr, &_serial0, "uart0");
+    /* enable Rx and Tx of UART */
+    UART_CR(uart->hw_base) = (1 << 0) | (1 << 8) | (1 << 9);
+#endif
+
+    return 0;
+}
+INIT_BOARD_EXPORT(rt_hw_uart_init);

bsp/qemu-virt64-aarch64/drivers/drv_uart.h

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2013-03-30     Bernard      the first verion
+ */
+
+#ifndef __DRV_UART_H__
+#define __DRV_UART_H__
+
+int rt_hw_uart_init(void);
+
+#endif /* __DRV_UART_H__ */

bsp/qemu-virt64-aarch64/link.lds

@@ -0,0 +1,110 @@
+OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
+OUTPUT_ARCH(aarch64)
+SECTIONS
+{
+    /*. = 0x60080000; */
+    /*. = 0x40000000; */
+    . = 0xffff000000080000;
+
+    __text_start = .;
+    .text :
+    {
+        KEEP(*(.text.entrypoint))
+        KEEP(*(.vectors))
+        *(.text)
+        *(.text.*)
+
+        /* section information for utest */
+        . = ALIGN(4);
+        __rt_utest_tc_tab_start = .;
+        KEEP(*(UtestTcTab))
+        __rt_utest_tc_tab_end = .;
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+        . = ALIGN(4);
+
+        /* section information for modules */
+        . = ALIGN(4);
+        __rtmsymtab_start = .;
+        KEEP(*(RTMSymTab))
+        __rtmsymtab_end = .;
+
+        /* section information for initialization */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+    } =0
+    __text_end = .;
+
+    .ARM.exidx   :
+    {
+        __exidx_start = .;
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+        __exidx_end = .;
+    }
+
+    __rodata_start = .;
+    .rodata   : { *(.rodata) *(.rodata.*) }
+    __rodata_end = .;
+
+    . = ALIGN(4);
+    .ctors :
+    {
+        PROVIDE(__ctors_start__ = .);
+        KEEP(*(SORT(.ctors.*)))
+        KEEP(*(.ctors))
+        PROVIDE(__ctors_end__ = .);
+    }
+
+    .dtors :
+    {
+        PROVIDE(__dtors_start__ = .);
+        KEEP(*(SORT(.dtors.*)))
+        KEEP(*(.dtors))
+        PROVIDE(__dtors_end__ = .);
+    }
+
+    . = ALIGN(8);
+    __data_start = .;
+    .data :
+    {
+        *(.data)
+        *(.data.*)
+    }
+    __data_end = .;
+
+    . = ALIGN(8);
+    __bss_start = .;
+    .bss       :
+    {
+    *(.bss)
+    *(.bss.*)
+    *(COMMON)
+    . = ALIGN(4);
+    }
+    . = ALIGN(4);
+    __bss_end = .;
+
+    /* Stabs debugging sections.  */
+    .stab 0 : { *(.stab) }
+    .stabstr 0 : { *(.stabstr) }
+    .stab.excl 0 : { *(.stab.excl) }
+    .stab.exclstr 0 : { *(.stab.exclstr) }
+    .stab.index 0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment 0 : { *(.comment) }
+
+	__data_size = SIZEOF(.data);
+	__bss_size = SIZEOF(.bss);
+
+    _end = .;
+}

bsp/qemu-virt64-aarch64/qemu.bat

@@ -0,0 +1 @@
+qemu-system-aarch64 -M virt -cpu cortex-a53 -smp 1 -kernel rtthread.bin -nographic

bsp/qemu-virt64-aarch64/qemu.sh

@@ -0,0 +1 @@
+qemu-system-aarch64 -M virt -cpu cortex-a53 -smp 1 -kernel rtthread.bin -nographic -monitor pty

bsp/qemu-virt64-aarch64/rtconfig.h

@@ -0,0 +1,200 @@
+#ifndef RT_CONFIG_H__
+#define RT_CONFIG_H__
+
+/* Automatically generated file; DO NOT EDIT. */
+/* RT-Thread Project Configuration */
+
+/* RT-Thread Kernel */
+
+#define RT_NAME_MAX 8
+#define RT_USING_SMART
+#define RT_ALIGN_SIZE 4
+#define RT_THREAD_PRIORITY_32
+#define RT_THREAD_PRIORITY_MAX 32
+#define RT_TICK_PER_SECOND 100
+#define RT_USING_OVERFLOW_CHECK
+#define RT_USING_HOOK
+#define RT_USING_IDLE_HOOK
+#define RT_IDLE_HOOK_LIST_SIZE 4
+#define IDLE_THREAD_STACK_SIZE 8192
+#define RT_USING_TIMER_SOFT
+#define RT_TIMER_THREAD_PRIO 4
+#define RT_TIMER_THREAD_STACK_SIZE 8192
+#define RT_DEBUG
+#define RT_DEBUG_COLOR
+
+/* Inter-Thread communication */
+
+#define RT_USING_SEMAPHORE
+#define RT_USING_MUTEX
+#define RT_USING_EVENT
+#define RT_USING_MAILBOX
+#define RT_USING_MESSAGEQUEUE
+#define RT_USING_SIGNALS
+
+/* Memory Management */
+
+#define RT_USING_MEMPOOL
+#define RT_USING_MEMHEAP
+#define RT_USING_SMALL_MEM
+#define RT_USING_MEMTRACE
+#define RT_USING_HEAP
+
+/* Kernel Device Object */
+
+#define RT_USING_DEVICE
+#define RT_USING_DEVICE_OPS
+#define RT_USING_INTERRUPT_INFO
+#define RT_USING_CONSOLE
+#define RT_CONSOLEBUF_SIZE 256
+#define RT_CONSOLE_DEVICE_NAME "uart0"
+#define RT_VER_NUM 0x50000
+#define ARCH_CPU_64BIT
+#define RT_USING_CACHE
+#define ARCH_ARM_MMU
+#define RT_USING_USERSPACE
+#define KERNEL_VADDR_START 0xffff000000000000
+#define PV_OFFSET 0x1000040000000
+#define ARCH_ARMV8
+
+/* RT-Thread Components */
+
+#define RT_USING_COMPONENTS_INIT
+#define RT_USING_USER_MAIN
+#define RT_MAIN_THREAD_STACK_SIZE 8192
+#define RT_MAIN_THREAD_PRIORITY 10
+
+/* C++ features */
+
+
+/* Command shell */
+
+#define RT_USING_FINSH
+#define RT_USING_MSH
+#define FINSH_THREAD_NAME "tshell"
+#define FINSH_USING_HISTORY
+#define FINSH_HISTORY_LINES 10
+#define FINSH_USING_SYMTAB
+#define FINSH_USING_DESCRIPTION
+#define FINSH_THREAD_PRIORITY 20
+#define FINSH_THREAD_STACK_SIZE 4096
+#define FINSH_CMD_SIZE 256
+#define FINSH_ARG_MAX 10
+
+/* Device virtual file system */
+
+#define RT_USING_DFS
+#define DFS_USING_WORKDIR
+#define DFS_FILESYSTEMS_MAX 4
+#define DFS_FILESYSTEM_TYPES_MAX 8
+#define DFS_FD_MAX 32
+#define RT_USING_DFS_DEVFS
+#define RT_USING_DFS_ROMFS
+
+/* Device Drivers */
+
+#define RT_USING_DEVICE_IPC
+#define RT_PIPE_BUFSZ 512
+#define RT_USING_SERIAL
+#define RT_SERIAL_USING_DMA
+#define RT_SERIAL_RB_BUFSZ 256
+#define RT_USING_PIN
+
+/* Using USB */
+
+
+/* POSIX layer and C standard library */
+
+#define RT_USING_LIBC
+#define RT_USING_MUSL
+#define RT_USING_POSIX
+#define RT_USING_POSIX_CLOCKTIME
+
+/* Network */
+
+/* Socket abstraction layer */
+
+
+/* Network interface device */
+
+
+/* light weight TCP/IP stack */
+
+
+/* AT commands */
+
+
+/* VBUS(Virtual Software BUS) */
+
+
+/* Utilities */
+
+#define RT_USING_LWP
+#define RT_LWP_MAX_NR 30
+#define LWP_TASK_STACK_SIZE 16384
+#define RT_CH_MSG_MAX_NR 1024
+#define RT_LWP_SHM_MAX_NR 64
+#define LWP_CONSOLE_INPUT_BUFFER_SIZE 1024
+#define LWP_TID_MAX_NR 64
+
+/* RT-Thread online packages */
+
+/* IoT - internet of things */
+
+
+/* Wi-Fi */
+
+/* Marvell WiFi */
+
+
+/* Wiced WiFi */
+
+
+/* IoT Cloud */
+
+
+/* security packages */
+
+
+/* language packages */
+
+
+/* multimedia packages */
+
+
+/* tools packages */
+
+
+/* system packages */
+
+/* acceleration: Assembly language or algorithmic acceleration packages */
+
+
+/* Micrium: Micrium software products porting for RT-Thread */
+
+
+/* peripheral libraries and drivers */
+
+
+/* AI packages */
+
+
+/* miscellaneous packages */
+
+
+/* samples: kernel and components samples */
+
+
+/* entertainment: terminal games and other interesting software packages */
+
+#define SOC_VIRT64_AARCH64
+
+/* AARCH64 qemu virt64 configs */
+
+#define BSP_SUPPORT_FPU
+#define BSP_USING_UART
+#define RT_USING_UART0
+#define BSP_USING_GIC
+#define BSP_USING_GIC390
+
+#endif

bsp/qemu-virt64-aarch64/rtconfig.py

@@ -0,0 +1,45 @@
+import os
+
+# toolchains options
+ARCH        ='aarch64'
+CPU         ='cortex-a'
+CROSS_TOOL  = 'gcc'
+PLATFORM    = 'gcc'
+EXEC_PATH   = os.getenv('RTT_EXEC_PATH') or '/usr/bin'
+BUILD       = 'debug'
+
+if PLATFORM == 'gcc':
+    # toolchains
+    PREFIX  = os.getenv('RTT_CC_PREFIX') or 'aarch64-linux-musleabi-'
+    CC      = PREFIX + 'gcc'
+    CXX     = PREFIX + 'g++'
+    AS      = PREFIX + 'gcc'
+    AR      = PREFIX + 'ar'
+    LINK    = PREFIX + 'gcc'
+    TARGET_EXT = 'elf'
+    SIZE    = PREFIX + 'size'
+    OBJDUMP = PREFIX + 'objdump'
+    OBJCPY  = PREFIX + 'objcopy'
+    STRIP   = PREFIX + 'strip'
+    CFPFLAGS = ' '
+    AFPFLAGS = ' '
+    DEVICE   = ' -march=armv8-a -mtune=cortex-a53 -ftree-vectorize -ffast-math -funwind-tables -fno-strict-aliasing'
+
+    CXXFLAGS= DEVICE + CFPFLAGS + ' -Wall'
+    CFLAGS  = DEVICE + CFPFLAGS + ' -Wall -std=gnu99'
+    AFLAGS  = ' -c' + AFPFLAGS + ' -x assembler-with-cpp'
+    LFLAGS  = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors -T link.lds' + ' -lsupc++ -lgcc'
+    CPATH   = ''
+    LPATH   = ''
+
+    if BUILD == 'debug':
+        CFLAGS   += ' -O0 -gdwarf-2'
+        CXXFLAGS += ' -O0 -gdwarf-2'
+        AFLAGS   += ' -gdwarf-2'
+    else:
+        CFLAGS   += ' -Os'
+        CXXFLAGS += ' -Os'
+    CXXFLAGS += ' -Woverloaded-virtual -fno-exceptions -fno-rtti'
+
+DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtt.asm\n'
+POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'

components/drivers/serial/serial.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -469,7 +469,7 @@ static void rt_dma_recv_update_put_index(struct rt_serial_device *serial, rt_siz
             rx_fifo->is_full = RT_TRUE;
         }
     }
-    
+
     if(rx_fifo->is_full == RT_TRUE)
     {
         _serial_check_buffer_size();
@@ -626,7 +626,7 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
 
     /* initialize the Rx/Tx structure according to open flag */
     if (serial->serial_rx == RT_NULL)
-    { 
+    {
         if (oflag & RT_DEVICE_FLAG_INT_RX)
         {
             struct rt_serial_rx_fifo* rx_fifo;
@@ -645,7 +645,7 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
             /* configure low level device */
             serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_RX);
         }
-#ifdef RT_SERIAL_USING_DMA        
+#ifdef RT_SERIAL_USING_DMA
         else if (oflag & RT_DEVICE_FLAG_DMA_RX)
         {
             if (serial->config.bufsz == 0) {
@@ -682,10 +682,14 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
     else
     {
         if (oflag & RT_DEVICE_FLAG_INT_RX)
+        {
             dev->open_flag |= RT_DEVICE_FLAG_INT_RX;
+        }
 #ifdef RT_SERIAL_USING_DMA
         else if (oflag & RT_DEVICE_FLAG_DMA_RX)
+        {
             dev->open_flag |= RT_DEVICE_FLAG_DMA_RX;
+        }
 #endif /* RT_SERIAL_USING_DMA */  
     }
 
@@ -730,11 +734,15 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
     else
     {
         if (oflag & RT_DEVICE_FLAG_INT_TX)
+        {
             dev->open_flag |= RT_DEVICE_FLAG_INT_TX;
+        }
 #ifdef RT_SERIAL_USING_DMA
         else if (oflag & RT_DEVICE_FLAG_DMA_TX)
+        {
             dev->open_flag |= RT_DEVICE_FLAG_DMA_TX;
-#endif /* RT_SERIAL_USING_DMA */    
+        }            
+#endif /* RT_SERIAL_USING_DMA */
     }
 
     /* set stream flag */
@@ -792,7 +800,7 @@ static rt_err_t rt_serial_close(struct rt_device *dev)
         serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void *) RT_DEVICE_FLAG_DMA_RX);
     }
 #endif /* RT_SERIAL_USING_DMA */
-    
+
     if (dev->open_flag & RT_DEVICE_FLAG_INT_TX)
     {
         struct rt_serial_tx_fifo* tx_fifo;
@@ -853,7 +861,7 @@ static rt_size_t rt_serial_read(struct rt_device *dev,
     {
         return _serial_dma_rx(serial, (rt_uint8_t *)buffer, size);
     }
-#endif /* RT_SERIAL_USING_DMA */    
+#endif /* RT_SERIAL_USING_DMA */
 
     return _serial_poll_rx(serial, (rt_uint8_t *)buffer, size);
 }
@@ -874,7 +882,7 @@ static rt_size_t rt_serial_write(struct rt_device *dev,
     {
         return _serial_int_tx(serial, (const rt_uint8_t *)buffer, size);
     }
-#ifdef RT_SERIAL_USING_DMA    
+#ifdef RT_SERIAL_USING_DMA
     else if (dev->open_flag & RT_DEVICE_FLAG_DMA_TX)
     {
         return _serial_dma_tx(serial, (const rt_uint8_t *)buffer, size);
@@ -1130,6 +1138,8 @@ static rt_err_t rt_serial_control(struct rt_device *dev,
             break;
         case TCXONC:
             break;
+        case TIOCGWINSZ:
+            break;
 #endif
 #ifdef RT_USING_POSIX
         case FIONREAD:
@@ -1155,7 +1165,7 @@ static rt_err_t rt_serial_control(struct rt_device *dev,
 }
 
 #ifdef RT_USING_DEVICE_OPS
-const static struct rt_device_ops serial_ops = 
+const static struct rt_device_ops serial_ops =
 {
     rt_serial_init,
     rt_serial_open,

components/lwp/lwp_console.c

@@ -293,6 +293,16 @@ static int console_fops_write(struct dfs_fd *fd, const void *buf, size_t count)
     return size;
 }
 
+static int console_fops_ioctl(struct dfs_fd *fd, int cmd, void *args)
+{
+    int size = 0;
+    struct rt_device *device = RT_NULL;
+
+    device = (struct rt_device *)fd->fnode->data;
+    RT_ASSERT(device != RT_NULL);
+    size = rt_device_control(device, cmd, args);
+    return size;	
+}
 static int console_fops_poll(struct dfs_fd *fd, struct rt_pollreq *req)
 {
     rt_base_t level = 0;
@@ -332,7 +342,7 @@ const static struct dfs_file_ops _console_fops =
 {
     console_fops_open,
     console_fops_close,
-    RT_NULL,
+    console_fops_ioctl,
     console_fops_read,
     console_fops_write,
     RT_NULL, /* flush */
@@ -451,6 +461,23 @@ static rt_size_t rt_console_write(struct rt_device *dev,
 
     return len;
 }
+		
+static rt_err_t  rt_console_control(rt_device_t dev, int cmd, void *args)
+{
+	rt_base_t level = 0;
+    rt_size_t len = 0;
+    struct rt_console_device *console = RT_NULL;
+
+    console = (struct rt_console_device *)dev;
+    RT_ASSERT(console != RT_NULL);
+    RT_ASSERT(console->init_flag == CONSOLE_INIT_FLAG_INITED);
+
+    level = rt_hw_interrupt_disable();
+    len = rt_device_control((struct rt_device *)console->iodev, cmd, args);
+    rt_hw_interrupt_enable(level);
+
+    return len;
+}
 
 #ifdef RT_USING_DEVICE_OPS
 const static struct rt_device_ops console_ops =
@@ -460,7 +487,7 @@ const static struct rt_device_ops console_ops =
     rt_console_close,
     rt_console_read,
     rt_console_write,
-    RT_NULL,
+    rt_console_control,
 };
 #endif
 
@@ -490,7 +517,7 @@ rt_err_t rt_console_register(const char *name, struct rt_device *iodev)
     device->close       = rt_console_close;
     device->read        = rt_console_read;
     device->write       = rt_console_write;
-    device->control     = RT_NULL;
+    device->control     = rt_console_control;
 #endif
 
     /* register a character device */

libcpu/aarch64/common/context_gcc.S

@@ -120,9 +120,9 @@ rt_hw_get_gtimer_frq:
     BL      lwp_check_exit
 
     BL      rt_thread_self
-    MOV     X8, X0
+    MOV     X19, X0
     BL      lwp_mmu_switch
-    MOV     X0, X8
+    MOV     X0, X19
     BL      lwp_user_setting_restore
 
     LDP     X2, X3, [SP], #0x10  /* SPSR and ELR. */

libcpu/aarch64/common/interrupt.c

@@ -25,8 +25,8 @@ rt_ubase_t rt_thread_switch_interrupt_flag = 0;
 #endif
 
 const unsigned int VECTOR_BASE = 0x00;
-extern void rt_cpu_vector_set_base(unsigned int addr);
-extern int system_vectors;
+extern void rt_cpu_vector_set_base(void *addr);
+extern void *system_vectors;
 
 #ifdef RT_USING_SMP
 #define rt_interrupt_nest rt_cpu_self()->irq_nest
@@ -47,7 +47,7 @@ static void default_isr_handler(int vector, void *param)
 
 void rt_hw_vector_init(void)
 {
-    rt_cpu_vector_set_base((unsigned long)&system_vectors);
+    rt_cpu_vector_set_base(&system_vectors);
 }
 
 /**

libcpu/aarch64/cortex-a/entry_point.S

@@ -4,97 +4,90 @@
  * SPDX-License-Identifier: Apache-2.0
  *
  * Date           Author       Notes
- * 2020-01-15     bigmagic    the first version
+ * 2020-01-15     bigmagic     the first version
+ * 2020-08-10     SummerGift   support clang compiler
  */
 
 #include "rtconfig.h"
 .section ".text.entrypoint","ax"
-
 .set EL1_stack,         __el1_stack
-
 .global __start
 
-// This symbol is set to 0x80000 in ld script. That is the address that raspi3's firmware
-// loads 'kernel8.img' file in.
 __start:
-    // read cpu id, stop slave cores
-    mrs     x1, mpidr_el1            // MPIDR_EL1: Multi-Processor Affinity Register
+    /* read cpu id, stop slave cores */
+    mrs     x1, mpidr_el1           /* MPIDR_EL1: Multi-Processor Affinity Register */
     and     x1, x1, #3
-    cbz     x1, .L__cpu_0             // .L prefix is the local label in ELF
+    cbz     x1, .L__cpu_0           /* .L prefix is the local label in ELF */
 
-    // cpu id > 0, stop
-    // cpu id == 0 will also goto here after returned from entry() if possible
+    /* cpu id > 0, stop */
+    /* cpu id == 0 will also goto here after returned from entry() if possible */
 .L__current_cpu_idle:
     wfe
     b       .L__current_cpu_idle
 
-.L__cpu_0:  // cpu id == 0
-
-    // set stack before our code
-
-	/* Define stack pointer for current exception level */
-	// ldr	x2, =EL1_stack
-	// mov	sp, x2
+.L__cpu_0:
+    /* set stack before our code, Define stack pointer for current exception level */
+    /* ldr	x2, =EL1_stack */
+    /* mov	sp, x2         */
 
     adr     x1, __start
 
-    // set up EL1
-    mrs     x0, CurrentEL           // CurrentEL Register. bit 2, 3. Others reserved
-    and     x0, x0, #12             // clear reserved bits
+    /* set up EL1 */
+    mrs     x0, CurrentEL           /* CurrentEL Register. bit 2, 3. Others reserved */
+    and     x0, x0, #12             /* clear reserved bits */
 
-    // running at EL3?
-    cmp     x0, #12                // 1100b. So, EL3
-    bne     .L__not_in_el3         // 11?  !EL3 -> 5:
+    /* running at EL3? */
+    cmp     x0, #12                 /* 1100b. So, EL3 */
+    bne     .L__not_in_el3          /* 11?  !EL3 -> 5: */
 
-    // should never be executed, just for completeness. (EL3)
+    /* should never be executed, just for completeness. (EL3) */
     mov     x2, #0x5b1
-    msr     scr_el3, x2            // SCR_ELn  Secure Configuration Register
+    msr     scr_el3, x2             /* SCR_ELn  Secure Configuration Register */
     mov     x2, #0x3c9
-    msr     spsr_el3, x2           // SPSR_ELn. Saved Program Status Register. 1111001001
+    msr     spsr_el3, x2            /* SPSR_ELn. Saved Program Status Register. 1111001001 */
     adr     x2, .L__not_in_el3
     msr     elr_el3, x2
-    eret                           // Exception Return: from EL3, continue from .L__not_in_el3
-
-    // running at EL2 or EL1
-.L__not_in_el3:
-    cmp     x0, #4                 // 0x04  0100 EL1
-    beq     .L__in_el1             // EL1 -> 5:
+    eret                            /* Exception Return: from EL3, continue from .L__not_in_el3 */
 
+.L__not_in_el3:                     /* running at EL2 or EL1 */
+    cmp     x0, #4                  /* 0x04  0100 EL1 */
+    beq     .L__in_el1              /* EL1 -> 5: */
+ 
     mrs     x0, hcr_el2
     bic     x0, x0, #0xff
     msr     hcr_el2, x0
-    // in EL2
-    msr     sp_el1, x1             // Set sp of EL1 to _start
 
-    // enable CNTP for EL1
-    mrs     x0, cnthctl_el2         // Counter-timer Hypervisor Control register
+    msr     sp_el1, x1              /* in EL2, set sp of EL1 to _start */
+
+    /* enable CNTP for EL1 */
+    mrs     x0, cnthctl_el2         /* Counter-timer Hypervisor Control register */
     orr     x0, x0, #3
     msr     cnthctl_el2, x0
     msr     cntvoff_el2, xzr
 
-    // enable AArch64 in EL1
-    mov     x0, #(1 << 31)          // AArch64
-    orr     x0, x0, #(1 << 1)       // SWIO hardwired on Pi3
+    /* enable AArch64 in EL1 */
+    mov     x0, #(1 << 31)          /* AArch64 */
+    orr     x0, x0, #(1 << 1)       /* SWIO hardwired on Pi3 */
     msr     hcr_el2, x0
     mrs     x0, hcr_el2
 
-    // change execution level to EL1
+    /* change execution level to EL1 */
     mov     x2, #0x3c4
-    msr     spsr_el2, x2        // 1111000100
+    msr     spsr_el2, x2            /* 1111000100 */
     adr     x2, .L__in_el1
     msr     elr_el2, x2
 
-    eret                        // exception return. from EL2. continue from .L__in_el1
+    eret                            /* exception return. from EL2. continue from .L__in_el1 */
 
 .L__in_el1:
     ldr     x9, =PV_OFFSET
-    mov     sp, x1             // in EL1. Set sp to _start
+    mov     sp, x1                  /* in EL1. Set sp to _start */
 
-    // Set CPACR_EL1 (Architecture Feature Access Control Register) to avoid trap from SIMD or float point instruction
-    mov     x1, #0x00300000       // Don't trap any SIMD/FP instructions in both EL0 and EL1
+    /* Set CPACR_EL1 (Architecture Feature Access Control Register) to avoid trap from SIMD or float point instruction */
+    mov     x1, #0x00300000         /* Don't trap any SIMD/FP instructions in both EL0 and EL1 */
     msr     cpacr_el1, x1
 
-    // clear bss
+    /* clear bss */
     ldr     x1, =__bss_start
     add     x1, x1, x9
     ldr     w2, =__bss_size
@@ -105,8 +98,7 @@ __start:
     sub     w2, w2, #1
     cbnz    w2, .L__clean_bss_loop
 
-    // jump to C code, should not return
-.L__jump_to_entry:
+.L__jump_to_entry:          /* jump to C code, should not return */        
 
     bl get_free_page
     mov x21, x0
@@ -123,32 +115,32 @@ __start:
     msr ttbr1_el1, x1
     dsb sy
 
-    ldr x2, =0x40000000 //1G
-    mov x3, x9
+    ldr x2, =0x40000000      /* map 1G memory for kernel space */
+    ldr x3, =PV_OFFSET
     bl rt_hw_mmu_setup_early
 
     ldr x30, =after_mmu_enable
 
     mrs x1, sctlr_el1
-    bic x1, x1, #(3 << 3) /* dis SA, SA0 */
-    bic x1, x1, #(1 << 1) /* dis A */
-    orr x1, x1, #(1 << 12) /* I */
-    orr x1, x1, #(1 << 2) /* C */
-    orr x1, x1, #(1 << 0) /* M */
-    msr sctlr_el1, x1
+    bic x1, x1, #(3 << 3)    /* dis SA, SA0 */
+    bic x1, x1, #(1 << 1)    /* dis A */
+    orr x1, x1, #(1 << 12)   /* I */
+    orr x1, x1, #(1 << 2)    /* C */
+    orr x1, x1, #(1 << 0)    /* M */
+    msr sctlr_el1, x1        /* enable MMU */
+
     dsb sy
     isb sy
-    ic ialluis
+    ic ialluis               /* Invalidate all instruction caches in Inner Shareable domain to Point of Unification */
     dsb sy
     isb sy
-    tlbi vmalle1
+    tlbi vmalle1             /* Invalidate all stage 1 translations used at EL1 with the current VMID */
     dsb sy
     isb sy
     ret
 
 after_mmu_enable:
-    // disable ttbr0
-    mrs x0, tcr_el1
+    mrs x0, tcr_el1          /* disable ttbr0, only using kernel space */
     orr x0, x0, #(1 << 7)
     msr tcr_el1, x0
     msr ttbr0_el1, xzr
@@ -157,6 +149,6 @@ after_mmu_enable:
     mov     x0, #1
     msr     spsel, x0
     adr     x1, __start
-    mov     sp, x1             // sp_el1 set to _start
+    mov     sp, x1           /* sp_el1 set to _start */
 
     b  rtthread_startup