[PATCH v2 2/3] tools: binman: Add a property to pass a key directory to mkimage

[Paul HENRYS]

The property 'fit,keys-directory' can be added to the configuration file
passed to binman to specify a directory where keys are stored and can be
used by mkimage to sign and cipher data.

Signed-off-by: Paul HENRYS <paul.henrys_...@softathome.com>
---
 tools/binman/btool/mkimage.py | 5 ++++-
 tools/binman/entries.rst      | 3 +++
 tools/binman/etype/fit.py     | 6 ++++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/tools/binman/btool/mkimage.py b/tools/binman/btool/mkimage.py
index 39a4c8c1432..dbcf8daac30 100644
--- a/tools/binman/btool/mkimage.py
+++ b/tools/binman/btool/mkimage.py
@@ -22,7 +22,7 @@ class Bintoolmkimage(bintool.Bintool):
 
     # pylint: disable=R0913
     def run(self, reset_timestamp=False, output_fname=None, external=False,
-            pad=None, align=None):
+            pad=None, align=None, keys_dir=None):
         """Run mkimage
 
         Args:
@@ -34,6 +34,7 @@ class Bintoolmkimage(bintool.Bintool):
                 other things to be easily added later, if required, such as
                 signatures
             align: Bytes to use for alignment of the FIT and its external data
+            keys_dir: directory where keys are stored
             version: True to get the mkimage version
         """
         args = []
@@ -45,6 +46,8 @@ class Bintoolmkimage(bintool.Bintool):
             args += ['-B', f'{align:x}']
         if reset_timestamp:
             args.append('-t')
+        if keys_dir:
+            args += ['-k', keys_dir]
         if output_fname:
             args += ['-F', output_fname]
         return self.run_cmd(*args)
diff --git a/tools/binman/entries.rst b/tools/binman/entries.rst
index 12482703782..eb33eb9eedf 100644
--- a/tools/binman/entries.rst
+++ b/tools/binman/entries.rst
@@ -864,6 +864,9 @@ The top-level 'fit' node supports the following special 
properties:
 
             fit,fdt-list-dir = "arch/arm/dts
 
+    fit,keys-directory
+        Provides a directory where keys can be retrieved.
+
 Substitutions
 ~~~~~~~~~~~~~
 
diff --git a/tools/binman/etype/fit.py b/tools/binman/etype/fit.py
index ee44e5a1cd6..d20906aab3b 100644
--- a/tools/binman/etype/fit.py
+++ b/tools/binman/etype/fit.py
@@ -96,6 +96,9 @@ class Entry_fit(Entry_section):
 
                 fit,fdt-list-dir = "arch/arm/dts
 
+        fit,keys-directory
+            Provides a directory where keys can be retrieved.
+
     Substitutions
     ~~~~~~~~~~~~~
 
@@ -518,6 +521,9 @@ class Entry_fit(Entry_section):
         align = self._fit_props.get('fit,align')
         if align is not None:
             args.update({'align': fdt_util.fdt32_to_cpu(align.value)})
+        keys_dir = self._fit_props.get('fit,keys-directory')
+        if keys_dir is not None:
+            args.update({'keys_dir': keys_dir.value})
         if self.mkimage.run(reset_timestamp=True, output_fname=output_fname,
                             **args) is None:
             if not self.GetAllowMissing():
-- 
2.25.1