【uboot】uboot調試

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

轉載于:https://www.cnblogs.com/kevinchase/p/11452180.html