In some cases it is useful to add a group of files to the image and be
able to access them at run-time. Of course it is possible to generate
the binman config file with a set of blobs each with a filename. But for
convenience, add an entry type which can do this.
Add required support (for adding nodes and string properties) into the
state module.
Signed-off-by: Simon Glass <sjg@chromium.org>
Binman currently supports updating the main device tree with things like
the position of each entry. Extend this support to SPL and TPL as well,
since they may need (a subset of) this information.
Also adjust DTB output files to have a .out extension since this seems
clearer than having a .dtb extension with 'out' in the name somwhere.
Also add a few missing comments and update the DT setup code to use
ReadFile and WriteFile().
Signed-off-by: Simon Glass <sjg@chromium.org>
We always have a device tree for U-Boot proper. But we may also have one
for SPL and TPL. Add a new Entry method to find out what DTs an entry
has, and use that list when updating DTs.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we have a few calls to device-tree functions in binman and plan
to add more as we add new entry types which need to report their results.
It makes sense to put this code in a central place so that we can make
sure all device trees are updated. At present we only have U-Boot proper,
but plan to add SPL and TPL too.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the control module has state information in it, since it is the
primary user of this. But it is a bit odd to have entries and other
modules importing control to obtain this information.
It seems better to have a dedicated state module, which control can use as
well. Create a new module using code from control and update other modules
to use it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Various entry implementations provide a way to obtain the default filename
for an entry. But at present there is no base-class implementation for
this function. Add one so that the API is defined.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present if there are two vblock entries an image their contents are
written to the same file in the output directory. This prevents checking
the contents of each separately.
Fix this by adding part of the entry path to the filename, and add some
missing comments.
Signed-off-by: Simon Glass <sjg@chromium.org>
This property has been changed to 'offset'. To help downstream users who
might still be using 'pos', add a check that this is not used by mistake.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the map only shows the offset and size for each region. The
image position provides the actual position of each entry in the image,
regardless of the section hierarchy.
Add the image position to the map.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add an entry which can hold an FMAP region as used by flashrom, an
open-source flashing tool used on Linux x86 machines. This provides a
simplified non-hierarchical view of the entries in the image and has a
signature at the start to allow flashrom to find it in the image.
Signed-off-by: Simon Glass <sjg@chromium.org>
Binman supports quite a number of different entries now. The operation of
these is not always obvious but at present the source code is the only
reference for understanding how an entry works.
Add a way to create documentation (from the source code) which can be put
in a new 'README.entries' file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Sometimes it is useful to pass binman the value of an entry property from
the command line. For example some entries need access to files and it is
not always convenient to put these filenames in the image definition
(device tree).
Add a -a option which can be used like this:
-a<prop>=<value>
where
<prop> is the property to set
<value> is the value to set it to
Signed-off-by: Simon Glass <sjg@chromium.org>
At present each entry has an offset within its parent section. This is
useful for figuring out how entries relate to one another. However it
is sometimes necessary to locate an entry within an image, regardless
of which sections it is nested inside.
Add a new 'image-pos' property to provide this information. Also add
some documentation for the -u option binman provides, which updates the
device tree with final entry information.
Since the image position is a better symbol to use for the position of
U-Boot as obtained by SPL, update the SPL symbols to use this instead of
offset, which might be incorrect if hierarchical sections are used.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the .map file produced for each image does not include the
overall image size. This is useful information.
Update the code to generate it in the .map file as well as the updated
FDT. Also fix a few comments while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
After some thought, I believe there is an unfortunate naming flaw in
binman. Entries have a position and size, but now that we support
hierarchical sections it is unclear whether a position should be an
absolute position within the image, or a relative position within its
parent section.
At present 'position' actually means the relative position. This indicates
a need for an 'image position' for code that wants to find the location of
an entry without having to do calculations back through parents to
discover this image position.
A better name for the current 'position' or 'pos' is 'offset'. It is not
always an absolute position, but it is always an offset from its parent
offset.
It is unfortunate to rename this concept now, 18 months after binman was
introduced. However I believe it is the right thing to do. The impact is
mostly limited to binman itself and a few changes to in-tree users to
binman:
tegra
sunxi
x86
The change makes old binman definitions (e.g. downstream or out-of-tree)
incompatible if they use the 'pos = <...>' property. Later work will
adjust binman to generate an error when it is used.
Signed-off-by: Simon Glass <sjg@chromium.org>
Once binman has packed the image, the position and size of each entry is
known. It is then possible for binman to update the device tree with these
positions. Since placeholder values have been added, this does not affect
the size of the device tree and therefore the packing does not need to be
performed again.
Add a new SetCalculatedProperties method to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Some entry types modify the device tree, e.g. to remove microcode or add a
property. So far this just modifies their local copy and does not affect
a 'shared' device tree.
Rather than doing this modification in the ObtainContents() method, and a
new ProcessFdt() method which is specifically designed to modify this
shared device tree.
Move the existing device-tree code over to use this method, reducing
ObtainContents() to the goal of just obtaining the contents without any
processing, even for device tree.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the contents of an entry are set in subclasses simply by
assigning to the data and content_size properties. Add some methods to do
this, so that we have more control. In particular, add a method to set the
contents without changing its size, so we can validate that case.
Add a test case for trying to change the size when this is not allowed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Sometimes we have several sections which repeat the same entries (e.g. for
a read-only and read-write version of the same section). It is useful to
be able to tell these entries apart by name.
Add a new 'name-prefix' property for sections, which causes all entries
within that section to have a given name prefix.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to be able to see a list of regions in each image produced by
binman. Add a -m option to output this information in a '.map' file
alongside the image file.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to be able to split an image into multiple sections,
each with its own size and position, for cases where a flash device has
read-only and read-write portions.
Add support for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we set the Python path at the start of binman so we can read
modules in the 'etype' directory. This is a bit messy since it affects
'import' statements through binman.
Adjust the code to set the path locally, just where it is needed. Move
the 'entry' module in with the other base modules to help with this. It
makes more sense here anyway since it does not implement an entry type.
Signed-off-by: Simon Glass <sjg@chromium.org>
2018-06-07 11:25:08 -08:00
Renamed from tools/binman/etype/entry.py (Browse further)
