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binman: Allow updating entries that change size

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So far we don't allow entries to change size when repacking. But this is
not very useful since it is common for entries to change size after an
updated binary is built, etc.

Add support for this, respecting the original offset/size/alignment
constraints of the image layout. For this to work the original image
must have been created with the 'allow-repack' property.

This does not support entry types with sub-entries such as files and
CBFS, but it does support sections.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2019-07-20 12:23:56 -06:00
parent eba1f0cc94
commit 51014aabc2
7 changed files with 113 additions and 26 deletions
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3
tools/binman/image.py
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@ -97,12 +97,13 @@ class Image(section.Entry_section):
fdt_data = fdtmap_data[fdtmap.FDTMAP_HDR_LEN:]
out_fname = tools.GetOutputFilename('fdtmap.in.dtb')
tools.WriteFile(out_fname, fdt_data)
dtb = fdt.Fdt.FromData(fdt_data, out_fname)
dtb = fdt.Fdt(out_fname)
dtb.Scan()
# Return an Image with the associated nodes
root = dtb.GetRoot()
image = Image('image', root, copy_to_orig=False)
image.image_node = fdt_util.GetString(root, 'image-node', 'image')
image.fdtmap_dtb = dtb
image.fdtmap_data = fdtmap_data