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binman: Allow the fdtmap to remain unchanged

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When updating an existing image where the size of all entries remains the
same, we should not need to regenerate the fdtmap. Update the entry to
return the same fdtmap as was read from the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2019-07-20 12:23:48 -06:00
parent 6ccbfcdd96
commit 02fd463cfe
1 changed files with 27 additions and 22 deletions
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49
tools/binman/etype/fdtmap.py
View File

@ -93,31 +93,36 @@ class Entry_fdtmap(Entry):
with fsw.add_node(subnode.name):
_AddNode(subnode)
# Get the FDT data into an Fdt object
data = state.GetFdtContents()[1]
infdt = Fdt.FromData(data)
infdt.Scan()
outfdt = self.GetImage().fdtmap_dtb
# If we have an fdtmap it means that we are using this as the
# read-only fdtmap for this image.
if not outfdt:
# Get the FDT data into an Fdt object
data = state.GetFdtContents()[1]
infdt = Fdt.FromData(data)
infdt.Scan()
# Find the node for the image containing the Fdt-map entry
path = self.section.GetPath()
self.Detail("Fdtmap: Using section '%s' (path '%s')" %
(self.section.name, path))
node = infdt.GetNode(path)
if not node:
self.Raise("Internal error: Cannot locate node for path '%s'" %
path)
# Find the node for the image containing the Fdt-map entry
path = self.section.GetPath()
self.Detail("Fdtmap: Using section '%s' (path '%s')" %
(self.section.name, path))
node = infdt.GetNode(path)
if not node:
self.Raise("Internal error: Cannot locate node for path '%s'" %
path)
# Build a new tree with all nodes and properties starting from that node
fsw = libfdt.FdtSw()
fsw.finish_reservemap()
with fsw.add_node(''):
fsw.property_string('image-node', node.name)
_AddNode(node)
fdt = fsw.as_fdt()
# Build a new tree with all nodes and properties starting from that
# node
fsw = libfdt.FdtSw()
fsw.finish_reservemap()
with fsw.add_node(''):
fsw.property_string('image-node', node.name)
_AddNode(node)
fdt = fsw.as_fdt()
# Pack this new FDT and return its contents
fdt.pack()
outfdt = Fdt.FromData(fdt.as_bytearray())
# Pack this new FDT and return its contents
fdt.pack()
outfdt = Fdt.FromData(fdt.as_bytearray())
data = FDTMAP_MAGIC + tools.GetBytes(0, 8) + outfdt.GetContents()
return data