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Now that all utils have converted to the new usage framework, we can
rename to just plain "usage()" and avoid naming conflicts.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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This helps standardize the flag processing and the usage screens.
Only lightly tested; would be great if someone who uses these utils
could double check.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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This reverts commit cc2c178727cdeca4eb9756637c2e09e50e0856e7.
It was the wrong version of the patch.
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For a follow up commit, we want to be able to scan the buffer that was
returned to us. In order to do that safely, we need to know how big
the buffer actually is, so pass that back if requested.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Sometimes the requested node or property is not present in the device
tree. This option provides a way of reporting a default value in this
case, rather than halting with an error.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
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This option lists the subnodes of each node given as a parameter, one
subnode per line.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
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This option lists the properties of each node given as a parameter, one
property per line.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
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There is a rather unfortunate bug in fdtget in that if multiple argument
sets are provided, it just repeats displaying the first set ones for
each set.
Fix this bug and add a test for it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
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Having braces on an if branch but not the else branch, or vice
versa is ugly and can trick you when reading the code.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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This simply utility makes it easy for scripts to read values from the device
tree. It is written in C and uses the same libfdt as the rest of the dtc
package.
What is it for:
- Reading fdt values from scripts
- Extracting fdt information within build systems
- Looking at particular values without having to dump the entire tree
To use it, specify the fdt binary file on command line followed by a list of
node, property pairs. The utility then looks up each node, finds the property
and displays the value.
Each value is printed on a new line.
fdtget tries to guess the type of each property based on its contents. This
is not always reliable, so you can use the -t option to force fdtget to decode
the value as a string, or byte, etc.
To read from stdin, use - as the file.
Usage:
fdtget <options> <dt file> [<node> <property>]...
Options:
-t <type> Type of data
-h Print this help
<type> s=string, i=int, u=unsigned, x=hex
Optional modifier prefix:
hh or b=byte, h=2 byte, l=4 byte (default)
Signed-off-by: Simon Glass <sjg@chromium.org>
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