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binman: Add info to allow safely repacking an image later

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At present it is not possible to discover the contraints to repacking an
image (e.g. maximum section size) since this information is not preserved
from the original image description.

Add new 'orig-offset' and 'orig-size' properties to hold this. Add them to
the main device tree in the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2019-07-20 12:23:51 -06:00
parent 10f9d0066b
commit 12bb1a99c2
8 changed files with 165 additions and 14 deletions
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70
tools/binman/ftest.py
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@@ -75,6 +75,9 @@ EXTRACT_DTB_SIZE = 0x3c9
# Properties expected to be in the device tree when update_dtb is used
BASE_DTB_PROPS = ['offset', 'size', 'image-pos']
# Extra properties expected to be in the device tree when allow-repack is used
REPACK_DTB_PROPS = ['orig-offset', 'orig-size']
class TestFunctional(unittest.TestCase):
"""Functional tests for binman
@@ -1244,7 +1247,7 @@ class TestFunctional(unittest.TestCase):
update_dtb=True)
dtb = fdt.Fdt(out_dtb_fname)
dtb.Scan()
props = self._GetPropTree(dtb, BASE_DTB_PROPS)
props = self._GetPropTree(dtb, BASE_DTB_PROPS + REPACK_DTB_PROPS)
self.assertEqual({
'image-pos': 0,
'offset': 0,
@@ -1587,7 +1590,8 @@ class TestFunctional(unittest.TestCase):
for item in ['', 'spl', 'tpl']:
dtb = fdt.Fdt.FromData(data[start:])
dtb.Scan()
props = self._GetPropTree(dtb, BASE_DTB_PROPS + ['spl', 'tpl'])
props = self._GetPropTree(dtb, BASE_DTB_PROPS + REPACK_DTB_PROPS +
['spl', 'tpl'])
expected = dict(base_expected)
if item:
expected[item] = 0
@@ -2821,5 +2825,67 @@ class TestFunctional(unittest.TestCase):
# Check the state looks right.
self.assertEqual('/binman/first-image', state.fdt_path_prefix)
def testUpdateFdtAllRepack(self):
"""Test that all device trees are updated with offset/size info"""
data = self._DoReadFileRealDtb('134_fdt_update_all_repack.dts')
SECTION_SIZE = 0x300
DTB_SIZE = 602
FDTMAP_SIZE = 608
base_expected = {
'offset': 0,
'size': SECTION_SIZE + DTB_SIZE * 2 + FDTMAP_SIZE,
'image-pos': 0,
'section:offset': 0,
'section:size': SECTION_SIZE,
'section:image-pos': 0,
'section/u-boot-dtb:offset': 4,
'section/u-boot-dtb:size': 636,
'section/u-boot-dtb:image-pos': 4,
'u-boot-spl-dtb:offset': SECTION_SIZE,
'u-boot-spl-dtb:size': DTB_SIZE,
'u-boot-spl-dtb:image-pos': SECTION_SIZE,
'u-boot-tpl-dtb:offset': SECTION_SIZE + DTB_SIZE,
'u-boot-tpl-dtb:image-pos': SECTION_SIZE + DTB_SIZE,
'u-boot-tpl-dtb:size': DTB_SIZE,
'fdtmap:offset': SECTION_SIZE + DTB_SIZE * 2,
'fdtmap:size': FDTMAP_SIZE,
'fdtmap:image-pos': SECTION_SIZE + DTB_SIZE * 2,
}
main_expected = {
'section:orig-size': SECTION_SIZE,
'section/u-boot-dtb:orig-offset': 4,
}
# We expect three device-tree files in the output, with the first one
# within a fixed-size section.
# Read them in sequence. We look for an 'spl' property in the SPL tree,
# and 'tpl' in the TPL tree, to make sure they are distinct from the
# main U-Boot tree. All three should have the same positions and offset
# except that the main tree should include the main_expected properties
start = 4
for item in ['', 'spl', 'tpl', None]:
if item is None:
start += 16 # Move past fdtmap header
dtb = fdt.Fdt.FromData(data[start:])
dtb.Scan()
props = self._GetPropTree(dtb,
BASE_DTB_PROPS + REPACK_DTB_PROPS + ['spl', 'tpl'],
prefix='/' if item is None else '/binman/')
expected = dict(base_expected)
if item:
expected[item] = 0
else:
# Main DTB and fdtdec should include the 'orig-' properties
expected.update(main_expected)
# Helpful for debugging:
#for prop in sorted(props):
#print('prop %s %s %s' % (prop, props[prop], expected[prop]))
self.assertEqual(expected, props)
if item == '':
start = SECTION_SIZE
else:
start += dtb._fdt_obj.totalsize()
if __name__ == "__main__":
unittest.main()