host bind [-r] <label> [<filename>] host unbind <label|seq> host info [<label|seq>] host dev [<label|seq>]
The host command provides a way to attach disk images on the host to U-Boot sandbox. This can be useful for testing U-Boot’s filesystem implementations.
This is used to specify a host device. It can either be a label (a string) or the sequence number of the device. An invalid value causes the command to fail.
This creates a new host device and binds a file to it.
Label to use to identify this binding. This can be any string.
Host filename to bind to
Mark the device as removable
This unbinds a host device that was previously bound. The sequence numbers of other devices remain unchanged.
Provides information about a particular host binding, or all of them.
Allowing selecting a particular device, or (with no arguments) seeing which one is selected.
Initially there are no devices:
=> host info dev blocks label path
Bind a device:
=> host bind -r test2 2MB.ext2.img => host bind fat 1MB.fat32.img => host info dev blocks label path 0 4096 test2 2MB.ext2.img 1 2048 fat 1MB.fat32.img
Select a device by label or sequence number:
=> host dev fat Current host device: 1: fat => host dev 0 Current host device: 0: test2
Write a file:
=> ext4write host 0 0 /dump 1e00 File System is consistent 7680 bytes written in 3 ms (2.4 MiB/s) => ext4ls host 0 <DIR> 4096 . <DIR> 4096 .. <DIR> 16384 lost+found 4096 testing 7680 dump
Unbind a device:
=> host unbind test2 => host info dev blocks label path 1 2048 fat 1MB.fat32.img
The return value $? indicates whether the command succeeded.