对Uboot使用的研究学习

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之前只是编译Uboot,并用其刷写固件。

这里将对其使用进行新一步的研究

通过help得:

? – alias for ‘help’
bootm – boot application image from memory
cp – memory copy
erase – erase SPI FLASH memory
go – start application at address ‘addr’
help – print online help
loadb – load binary file over serial line (kermit mode)
md – memory display
mdio – Ralink PHY register R/W command !!
mm – memory modify (auto-incrementing)
nm – memory modify (constant address)
printenv- print environment variables
reset – Perform RESET of the CPU
rf – read/write rf register
saveenv – save environment variables to persistent storage
setenv – set environment variables
tftpboot- boot image via network using TFTP protocol
version – print monitor version

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