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  • 【uboot】uboot调试

    Platform: S905D2_U200

    g12a_u200_v1#version
    U-Boot 2015.01-g40abd73 (Sep 19 2018 - 03:00:24)
    aarch64-none-elf-gcc (crosstool-NG linaro-1.13.1-4.8-2013.11 - Linaro GCC 2013.10) 4.8.3 2)
    GNU ld (crosstool-NG linaro-1.13.1-4.8-2013.11 - Linaro GCC 2013.10) 2.23.2.20130610 Linar4

    g12a_u200_v1#?
    ?       - alias for 'help'
    aml_sysrecovery- Burning with amlogic format package from partition sysrecovery
    amlmmc  - AMLMMC sub system
    amlnf   - aml mtd nand sub-system
    autoscr - run script from memory
    base    - print or set address offset
    bcb     - bcb
    bmp     - manipulate BMP image data
    booti   - boot arm64 Linux Image image from memory
    bootm   - boot application image from memory
    bootp   - boot image via network using BOOTP/TFTP protocol
    cbusreg - cbus register read/write
    chpart  - change active partition
    clkmsr  - Amlogic measure clock
    cmp     - memory compare
    cp      - memory copy
    crc32   - checksum calculation
    cvbs    - CVBS sub-system
    dcache  - enable or disable data cache
    defenv_reserv- reserve some specified envs after defaulting env
    dhcp    - boot image via network using DHCP/TFTP protocol
    echo    - echo args to console
    efuse   - efuse commands
    efuse_user- efuse user space read write ops
    emmc    - EMMC sub system
    env     - environment handling commands
    exit    - exit script
    false   - do nothing, unsuccessfully
    fastboot- use USB Fastboot protocol
    fatinfo - print information about filesystem
    fatload - load binary file from a dos filesystem
    fatls   - list files in a directory (default /)
    fatsize - determine a file's size
    fdt     - flattened device tree utility commands
    forceupdate- forceupdate
    get_rebootmode- get reboot mode
    get_valid_slot- get_valid_slot
    go      - start application at address 'addr'
    gpio    - query and control gpio pins
    gpt     - GUID Partition Table
    guid    - GUID - generate Globally Unique Identifier based on random UUID
    hdmitx  - HDMITX sub-system
    help    - print command description/usage
    i2c     - I2C sub-system
    icache  - enable or disable instruction cache
    imgread - Read the image from internal flash with actual size
    itest   - return true/false on integer compare
    jtagoff - disable jtag
    jtagon  - enable jtag
    keyman  - Unify key ops interfaces based dts cfg
    keyunify- key unify sub-system
    lcd     - lcd sub-system
    loadb   - load binary file over serial line (kermit mode)
    loadx   - load binary file over serial line (xmodem mode)
    loady   - load binary file over serial line (ymodem mode)
    loop    - infinite loop on address range
    macreg  - ethernet mac register read/write/dump
    md      - memory display
    mm      - memory modify (auto-incrementing address)
    mmc     - MMC sub system
    mmcinfo - display MMC info
    mtdparts- define flash/nand partitions
    mw      - memory write (fill)
    mwm     - mw mask function
    nand    - NAND sub-system
    nboot   - boot from NAND device
    nm      - memory modify (constant address)
    open_scp_log- print SCP messgage
    osd     - osd sub-system
    phyreg  - ethernet phy register read/write/dump
    ping    - send ICMP ECHO_REQUEST to network host
    printenv- print environment variables
    query   - SoC query commands
    rarpboot- boot image via network using RARP/TFTP protocol
    read_temp- cpu temp-system
    reboot  - set reboot mode and reboot system
    reset   - Perform RESET of the CPU
    ringmsr - Amlogic measure ring
    rpmb_state- RPMB sub-system
    rsvmem  - reserve memory
    run     - run commands in an environment variable
    saradc  - saradc sub-system
    saradc_12bit- saradc sub-system
    saveenv - save environment variables to persistent storage
    sdc_burn- Burning with amlogic format package in sdmmc
    sdc_update- Burning a partition with image file in sdmmc card
    set_active_slot- set_active_slot
    set_trim_base- cpu temp-system
    set_usb_boot- set usb boot mode
    setenv  - set environment variables
    sf      - SPI flash sub-system
    showvar - print local hushshell variables
    sleep   - delay execution for some time
    sspi    - SPI utility command
    store   - STORE sub-system
    systemoff- system off
    tee_log_level- update tee log level
    temp_triming- cpu temp-system
    test    - minimal test like /bin/sh
    testcache- cache test
    testsmp - test each CPU power on/off
    tftpboot- boot image via network using TFTP protocol
    true    - do nothing, successfully
    ubi     - ubi commands
    ubifsload- load file from an UBIFS filesystem
    ubifsls - list files in a directory
    ubifsmount- mount UBIFS volume
    ubifsumount- unmount UBIFS volume
    unpackimg- un pack logo image into pictures
    update  - Enter v2 usbburning mode
    usb     - USB sub-system
    usb_burn- Burning with amlogic format package in usb
    usb_update- Burning a partition with image file in usb host
    usbboot - boot from USB device
    uuid    - UUID - generate random Universally Unique Identifier
    version - print monitor, compiler and linker version
    viu_probe- enable viu probe in no secure chip
    vout    - VOUT sub-system
    vpp     - vpp sub-system
    vpu     - vpu sub-system
    write_trim- cpu temp-system
    write_version- cpu temp-system

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  • 原文地址:https://www.cnblogs.com/kevinchase/p/11452180.html
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