Sometimes it is useful to specify the default alignment for all entries
in a section, such as when word-alignment is necessary, for example. It
is tedious and error-prone to specify this individually for each section.
Add a property to control this for a section.
Signed-off-by: Simon Glass <sjg@chromium.org>
Many entries start 'Entry containing a'. This looks fine in the source
code but is annoying when viewed in the htmldocs table of contents. Drop
these unnecessary words.
Signed-off-by: Simon Glass <sjg@chromium.org>
When a section is compressed, all entries within it are grouped together
into a compressed block of data. This obscures the start of each
individual child entry.
Avoid reporting bogus 'image-pos' properties in this case, since it is
not possible to access the entry at the location provided. The entire
section must be decompressed first.
CBFS does not support compressing whole sections, only individual files,
so needs no special handling here.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is easier and less error-prone to use super() when the parent type is
needed. Update binman to remove the type names.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
It is easier and less error-prone to use super() when the parent type is
needed. Update binman to remove the type names.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
At present binman sets the python path on startup so that it can access
the libraries it needs. If we convert to use absolute imports this is not
necessary.
Move binman to use absolute imports. This enables removable of the path
adjusting in Entry also.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present if libfdt is not available binman can't do anything much.
Improve the situation a little.
Ideally there should be a test to cover this, but I'm not quite sure how
to fake this.
Signed-off-by: Simon Glass <sjg@chromium.org>
(fixed up missing ReadChildData() enty test)
At present binman cannot replace data within a CBFS since it does not
allow rewriting of the files in that CBFS. Implement this by using the
new WriteData() method to handle the case.
Add a header to compressed data so that the amount of compressed data can
be determined without reference to the size of the containing entry. This
allows the entry to be larger that the contents, without causing errors in
decompression. This is necessary to cope with a compressed device tree
being updated in such a way that it shrinks after the entry size is
already set (an obscure case). It is not used with CBFS since it has its
own metadata for this. Increase the number of passes allowed to resolve
the position of entries, to handle this case.
Add a test for this new logic.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present this method assumes that the parent section does not need
to recalculate its position or adjust any metadata it may contain. But
when the entry changes size this may not be true. Also if the parent
section is more than just a container (e.g. it is a CBFS) then the
section may need to regenerate its output.
Add a new WriteChildData() method to sections and call this from the
WriteData() method, to handle this situation.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we simply extract the data directly from entries using the
image_pos information. This happens to work on current entry types, but
cannot work if the entry type encodes the data in some way. Update the
ReadData() method to provide the data by calling a new ReadChildData()
method in the parent. This allows the entry_Section class, or possibly
any other container class, to return the correct data in all cases.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the Entry constructor sets up the object and then immediately
reads its device-tree node to obtain its properties.
This breaks a convention that constructors should not do any processing.
A consequence is that we must pass all arguments to the constructor and
cannot have the node-reading proceed in a different way unless we pass
flags to that constructor. We already have a 'test' flag in a few cases,
and now need to control whether the 'orig_offset' and 'orig_size'
properties are set or not.
Adjust the code to require a separate call to ReadNode() after
construction. The Image class remains as it was.
Signed-off-by: Simon Glass <sjg@chromium.org>
CBFS is a bit like a section but with a custom format. Provide the list of
entries and the compression type to binman so that it can extract the data
from the CBFS, just like any other part of the image.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to be able to summarise all the entries in an image, e.g. to
display this to this user. Add a new ListEntries() method to Entry, and
set up a way to call it through the Image class.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to add the CBFS file information (offset, size, etc.) into
the FDT so that the layout is complete. Add support for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
A feature of CBFS is that it allows files to be positioned at particular
offset (as with binman in general). This is useful to support
execute-in-place (XIP) code, since this may not be relocatable.
Add a new cbfs-offset property to control this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add support for putting CBFSs (Coreboot Filesystems) in an image. This
allows binman to produce firmware images used by coreboot to boot.
Signed-off-by: Simon Glass <sjg@chromium.org>
