It is possible to read an Image, locate its FDT map and then read it into
the binman data structures. This allows full access to the entries that
were written to the image. Add support for this.
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>
Add support for detecting entries that change size after they have already
been packed, and re-running packing when it happens.
This removes the limitation that entry size cannot change after
PackEntries() is called.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present if this function tries to update the contents such that the
size changes, it raises an error. We plan to add the ability to change
the size of entries after packing is completed, since in some cases it is
not possible to determine the size in advance.
An example of this is with a compressed device tree, where the values
of the device tree change in SetCalculatedProperties() or
ProcessEntryContents(). While the device tree itself does not change size,
since placeholders for any new properties have already bee added by
AddMissingProperties(), we cannot predict the size of the device tree
after compression. If a value changes from 0 to 0x1234 (say), then the
compressed device tree may expand.
As a first step towards supporting this, make ProcessContentsUpdate()
return a value indicating whether the content size is OK. For now this is
always True (since otherwise binman raises an error), but later patches
will adjust this.
Signed-off-by: Simon Glass <sjg@chromium.org>
This function raises an exception with its arguments around the wrong way
so the message is incorrect. Fix this as well as a few minor comment
problems.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present entry modules can only be accessed using Entry.Lookup() or
Entry.Create(). Most of the time this is fine, but sometimes a module
needs to provide constants or helper functions useful to other modules.
It is easier in this case to use 'import'.
Add an __init__ file to permit this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Compression is currently available only with blobs. However we want to
report the compression algorithm and uncompressed size for all entries,
so that other entry types can support compression. This will help with
the forthcoming 'list' feature which lists entries in the image.
Move the compression properties into the base class. Also fix up the docs
which had the wrong property name.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to be able to quickly locate the FDT map in the image. An
easy way to do this is with a pointer at the start or end of the image.
Add an 'image header' entry, which places a magic number followed by a
pointer to the FDT map. This can be located at the start or end of the
image, or at a chosen location.
As part of this, update GetSiblingImagePos() to detect missing siblings.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present this function always sets both the offset and the size of
entries. But in some cases we want to set only one or the other, for
example with the forthcoming ifwi entry, where we only set the offset.
Update the function to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present having a descriptor means that there is an ME (Intel
Management Engine) entry as well. The descriptor provides the ME location
and assumes that it is present.
For some SoCs this is not true. Before providing the location of a
potentially non-existent entry, check if it is present.
Update the comment in the ME entry also.
Signed-off-by: Simon Glass <sjg@chromium.org>
When we get a problem like overlapping regions it is sometimes hard to
figure what what is going on. At present we don't write the map file in
this case. However the file does provide useful information.
Catch any packing errors and write a map file (if enabled with -m) to aid
debugging.
Signed-off-by: Simon Glass <sjg@chromium.org>
Normally x86 platforms use the end-at-4gb option. This currently produces
an FMAP with positions which have a large offset. The use of end-at-4gb is
a useful convenience within binman, but we don't really want to export
a map with these offsets.
Fix this by subtracting the 'skip at start' parameter.
Also put the code which convers names to fmap format, for clarity.
Signed-off-by: Simon Glass <sjg@chromium.org>
Sometimesi it us useful to be able to verify the content of entries with
a hash. Add an easy way to do this in binman. The hash information can be
retrieved from the device tree at run time.
Signed-off-by: Simon Glass <sjg@chromium.org>
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>
