[PATCH v3 15/49] binman: Allow external binaries to be missing
Simon Glass
sjg at chromium.org
Fri Jul 10 02:39:38 CEST 2020
Sometimes it is useful to build an image even though external binaries are
not present. This allows the build system to continue to function without
these files, albeit not producing valid images.
U-Boot does with with ATF (ARM Trusted Firmware) today.
Add a new flag to binman to request this behaviour.
Signed-off-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---
Changes in v3:
- Move the SetAllowMissing() function into this patch
- Keep the _allow_missing property to sections only
tools/binman/README.entries | 3 +++
tools/binman/cmdline.py | 2 ++
tools/binman/control.py | 7 +++++--
tools/binman/entry.py | 9 +++++++++
tools/binman/etype/blob_ext.py | 13 ++++++++++---
tools/binman/etype/section.py | 24 ++++++++++++++++++++++++
tools/binman/ftest.py | 8 +++++++-
tools/patman/tools.py | 8 ++++++--
8 files changed, 66 insertions(+), 8 deletions(-)
diff --git a/tools/binman/README.entries b/tools/binman/README.entries
index 46f6ab1899..f45f51428a 100644
--- a/tools/binman/README.entries
+++ b/tools/binman/README.entries
@@ -48,6 +48,9 @@ Entry: blob-ext: Entry containing an externally built binary blob
Note: This should not be used by itself. It is normally used as a parent
class by other entry types.
+If the file providing this blob is missing, binman can optionally ignore it
+and produce a broken image with a warning.
+
See 'blob' for Properties / Entry arguments.
diff --git a/tools/binman/cmdline.py b/tools/binman/cmdline.py
index 1e38593579..bb4d9d1288 100644
--- a/tools/binman/cmdline.py
+++ b/tools/binman/cmdline.py
@@ -53,6 +53,8 @@ controlled by a description in the board device tree.'''
help='Add a path to the list of directories to use for input files')
build_parser.add_argument('-m', '--map', action='store_true',
default=False, help='Output a map file for each image')
+ build_parser.add_argument('-M', '--allow-missing', action='store_true',
+ default=False, help='Allow external blobs to be missing')
build_parser.add_argument('-O', '--outdir', type=str,
action='store', help='Path to directory to use for intermediate and '
'output files')
diff --git a/tools/binman/control.py b/tools/binman/control.py
index dc1dd2a7dc..8c6eae83f1 100644
--- a/tools/binman/control.py
+++ b/tools/binman/control.py
@@ -387,7 +387,7 @@ def PrepareImagesAndDtbs(dtb_fname, select_images, update_fdt):
def ProcessImage(image, update_fdt, write_map, get_contents=True,
- allow_resize=True):
+ allow_resize=True, allow_missing=False):
"""Perform all steps for this image, including checking and # writing it.
This means that errors found with a later image will be reported after
@@ -402,8 +402,10 @@ def ProcessImage(image, update_fdt, write_map, get_contents=True,
the contents is already present
allow_resize: True to allow entries to change size (this does a re-pack
of the entries), False to raise an exception
+ allow_missing: Allow blob_ext objects to be missing
"""
if get_contents:
+ image.SetAllowMissing(allow_missing)
image.GetEntryContents()
image.GetEntryOffsets()
@@ -523,7 +525,8 @@ def Binman(args):
images = PrepareImagesAndDtbs(dtb_fname, args.image,
args.update_fdt)
for image in images.values():
- ProcessImage(image, args.update_fdt, args.map)
+ ProcessImage(image, args.update_fdt, args.map,
+ allow_missing=args.allow_missing)
# Write the updated FDTs to our output files
for dtb_item in state.GetAllFdts():
diff --git a/tools/binman/entry.py b/tools/binman/entry.py
index 90ffd27617..9388586e7c 100644
--- a/tools/binman/entry.py
+++ b/tools/binman/entry.py
@@ -794,3 +794,12 @@ features to produce new behaviours.
elif self == entries[-1]:
return 'end'
return 'middle'
+
+ def SetAllowMissing(self, allow_missing):
+ """Set whether a section allows missing external blobs
+
+ Args:
+ allow_missing: True if allowed, False if not allowed
+ """
+ # This is meaningless for anything other than sections
+ pass
diff --git a/tools/binman/etype/blob_ext.py b/tools/binman/etype/blob_ext.py
index cc8d91bb59..51779c88c9 100644
--- a/tools/binman/etype/blob_ext.py
+++ b/tools/binman/etype/blob_ext.py
@@ -18,6 +18,9 @@ class Entry_blob_ext(Entry_blob):
Note: This should not be used by itself. It is normally used as a parent
class by other entry types.
+ If the file providing this blob is missing, binman can optionally ignore it
+ and produce a broken image with a warning.
+
See 'blob' for Properties / Entry arguments.
"""
def __init__(self, section, etype, node):
@@ -26,6 +29,10 @@ class Entry_blob_ext(Entry_blob):
def ObtainContents(self):
self._filename = self.GetDefaultFilename()
- self._pathname = tools.GetInputFilename(self._filename)
- self.ReadBlobContents()
- return True
+ self._pathname = tools.GetInputFilename(self._filename,
+ self.section.GetAllowMissing())
+ # Allow the file to be missing
+ if not self._pathname:
+ self.SetContents(b'')
+ return True
+ return super().ObtainContents()
diff --git a/tools/binman/etype/section.py b/tools/binman/etype/section.py
index f108121c3a..9b718f1fa7 100644
--- a/tools/binman/etype/section.py
+++ b/tools/binman/etype/section.py
@@ -34,6 +34,11 @@ class Entry_section(Entry):
name-prefix: Adds a prefix to the name of every entry in the section
when writing out the map
+ Properties:
+ _allow_missing: True if this section permits external blobs to be
+ missing their contents. The second will produce an image but of
+ course it will not work.
+
Since a section is also an entry, it inherits all the properies of entries
too.
@@ -49,6 +54,7 @@ class Entry_section(Entry):
self._sort = False
self._skip_at_start = None
self._end_4gb = False
+ self._allow_missing = False
def ReadNode(self):
"""Read properties from the image node"""
@@ -535,3 +541,21 @@ class Entry_section(Entry):
def WriteChildData(self, child):
return True
+
+ def SetAllowMissing(self, allow_missing):
+ """Set whether a section allows missing external blobs
+
+ Args:
+ allow_missing: True if allowed, False if not allowed
+ """
+ self._allow_missing = allow_missing
+ for entry in self._entries.values():
+ entry.SetAllowMissing(allow_missing)
+
+ def GetAllowMissing(self):
+ """Get whether a section allows missing external blobs
+
+ Returns:
+ True if allowed, False if not allowed
+ """
+ return self._allow_missing
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index f8d5191672..7c8b3eb3a0 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -285,7 +285,7 @@ class TestFunctional(unittest.TestCase):
def _DoTestFile(self, fname, debug=False, map=False, update_dtb=False,
entry_args=None, images=None, use_real_dtb=False,
- verbosity=None):
+ verbosity=None, allow_missing=False):
"""Run binman with a given test file
Args:
@@ -319,6 +319,8 @@ class TestFunctional(unittest.TestCase):
if entry_args:
for arg, value in entry_args.items():
args.append('-a%s=%s' % (arg, value))
+ if allow_missing:
+ args.append('-M')
if images:
for image in images:
args += ['-i', image]
@@ -3376,6 +3378,10 @@ class TestFunctional(unittest.TestCase):
self.assertIn("Filename 'missing-file' not found in input path",
str(e.exception))
+ def testExtblobMissingOk(self):
+ """Test an image with an missing external blob that is allowed"""
+ self._DoTestFile('158_blob_ext_missing.dts', allow_missing=True)
+
if __name__ == "__main__":
unittest.main()
diff --git a/tools/patman/tools.py b/tools/patman/tools.py
index b50370dfe8..7d92e20afa 100644
--- a/tools/patman/tools.py
+++ b/tools/patman/tools.py
@@ -114,14 +114,16 @@ def SetInputDirs(dirname):
indir = dirname
tout.Debug("Using input directories %s" % indir)
-def GetInputFilename(fname):
+def GetInputFilename(fname, allow_missing=False):
"""Return a filename for use as input.
Args:
fname: Filename to use for new file
+ allow_missing: True if the filename can be missing
Returns:
- The full path of the filename, within the input directory
+ The full path of the filename, within the input directory, or
+ None on error
"""
if not indir or fname[:1] == '/':
return fname
@@ -130,6 +132,8 @@ def GetInputFilename(fname):
if os.path.exists(pathname):
return pathname
+ if allow_missing:
+ return None
raise ValueError("Filename '%s' not found in input path (%s) (cwd='%s')" %
(fname, ','.join(indir), os.getcwd()))
--
2.27.0.389.gc38d7665816-goog
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