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dtoc: Allow DTC environment variable to provide path to dtc

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The system device-tree compiler may not be new enough to run the tests we
use in U-Boot (e.g. with binman). Allow use of a DTC environment variable
to point to the correct dtc. If not defined, the dtc on the default PATH
is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-12-24 12:12:07 -07:00
parent 4d4db83d18
commit 3ed0de31b4
2 changed files with 6 additions and 1 deletions
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4
tools/binman/README
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@ -536,6 +536,10 @@ entry contents.
Most of the time such essoteric behaviour is not needed, but it can be Most of the time such essoteric behaviour is not needed, but it can be
essential for complex images. essential for complex images.
If you need to specify a particular device-tree compiler to use, you can define
the DTC environment variable. This can be useful when the system dtc is too
old.
History / Credits History / Credits
----------------- -----------------

3
tools/dtoc/fdt_util.py
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@ -79,7 +79,8 @@ def EnsureCompiled(fname):
'-W', 'no-unit_address_vs_reg'] '-W', 'no-unit_address_vs_reg']
args.extend(search_list) args.extend(search_list)
args.append(dts_input) args.append(dts_input)
command.Run('dtc', *args) dtc = os.environ.get('DTC') or 'dtc'
command.Run(dtc, *args)
return dtb_output return dtb_output
def GetInt(node, propname, default=None): def GetInt(node, propname, default=None):