TS-7250-V3 u-boot environment: Difference between revisions
From embeddedTS Manuals
(Created page with "The U-Boot environment is stored in the on-board eMMC flash in the /dev/mmcblk0boot0 partition. <source lang=bash> # Print all environment variables env print -a # Sets the...") |
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# Sets the variable bootdelay to 5 seconds | # Sets the variable bootdelay to 5 seconds | ||
env set bootdelay 5 | env set bootdelay 5 | ||
# Variables can also contain commands | # Variables can also contain commands | ||
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# Execute commands saved in a variable | # Execute commands saved in a variable | ||
env run hellocmd | env run hellocmd | ||
# Commit env changes to the spi flash | # Commit env changes to the spi flash | ||
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# Remove a variable | # Remove a variable | ||
env delete | env delete hellocmd | ||
</source> | </source> | ||
Latest revision as of 15:36, 19 March 2020
The U-Boot environment is stored in the on-board eMMC flash in the /dev/mmcblk0boot0 partition.
# Print all environment variables
env print -a
# Sets the variable bootdelay to 5 seconds
env set bootdelay 5
# Variables can also contain commands
env set hellocmd 'led 0 off; echo Hello world; led 1 on;'
# Execute commands saved in a variable
env run hellocmd
# Commit env changes to the spi flash
# Otherwise changes are lost
env save
# Restore env to default
env default -a
# Remove a variable
env delete hellocmd