At present if a driver is missing a uclass or compatible stirng, this
is silently ignored. This makes sense in most cases, particularly for
the compatible string, since it is not required except when the driver
is used with of-platdata.
But it is also not very helpful. When there is some sort of problem
with a driver, the missing compatible string (for example) may be the
cause.
Add a warning in this case, showing it only for drivers which are used
by the build.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Walter Lozano <walter.lozano@collabora.com>
Some rockchip drivers use a suffix on the of_match line which is not
strictly valid. At present this causes the parsing to fail. Fix this
and offer a warning.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present warnings are shown as soon as they are discovered in the
source scannner. But the function that detects them may be called multiple
times.
Collect all the warnings and show them at the end.
Signed-off-by: Simon Glass <sjg@chromium.org>
The device for the root node is normally bound by driver model on init.
With devices being instantiated at build time, we must handle the root
device also.
Add support for processing the root node, which may not have a compatible
string.
Signed-off-by: Simon Glass <sjg@chromium.org>
We only care about uclasses that are actually used. This is determined by
the drivers that use them. Check all the used drivers and build a list of
'valid' uclasses.
Also add references to the uclasses so we can generate C code that uses
them. Attach a uclass to each valid driver.
For the tests, now that we have uclasses we must create an explicit test
for the case where a node does not have one. This should only happen if
the source code does not build, or the source-code scanning fails to find
it.
Signed-off-by: Simon Glass <sjg@chromium.org>
If drivers have the same name then we cannot distinguish them. This only
matters if the driver is actually used by dtoc, but in that case, issue
a warning.
Signed-off-by: Simon Glass <sjg@chromium.org>
Typically dtoc can detect the header file needed for a driver by looking
for the structs that it uses. For example, if a driver as a .priv_auto
that uses 'struct serial_priv', then dtoc can search header files for the
definition of that struct and use the file.
In some cases, enums are used in drivers, typically with the .data field
of struct udevice_id. Since dtoc does not support searching for these,
add a way to tell dtoc which header to use. This works as a macro included
in the driver definition.
Signed-off-by: Simon Glass <sjg@chromium.org>
U-Boot operates in several phases, typically TPL, SPL and U-Boot proper.
The latter does not use dtoc.
In some rare cases different drivers are used for two phases. For example,
in TPL it may not be necessary to use the full PCI subsystem, so a simple
driver can be used instead.
This works in the build system simply by compiling in one driver or the
other (e.g. PCI driver + uclass for SPL; simple_bus for TPL). But dtoc has
no way of knowing which code is compiled in for which phase, since it does
not inspect Makefiles or dependency graphs.
So to make this work for dtoc, we need to be able to explicitly mark
drivers with their phase. This is done by adding an empty macro to the
driver. Add support for this in dtoc.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is confusing to have the test files in the same places as the
implementation. Move them into a separate directory.
Add a helper function for test_dtoc, to avoid repeating the same
path.
Signed-off-by: Simon Glass <sjg@chromium.org>
Drivers can have private / platform data contained in structs and these
struct definitions are generally kept in header files. In order to
generate build-time devices, dtoc needs to generate code that declares
the data contained in those structs. This generated code must include the
relevant header file, to avoid a build error.
We need a way for dtoc to scan header files for struct definitions. Then,
when it wants to generate code that uses a struct, it can make sure it
includes the correct header file, first.
Add a parser for struct information, similar to drivers. Keep a dict of
the structs that were found.
Signed-off-by: Simon Glass <sjg@chromium.org>
Uclasses can have per-device private / platform data so dtoc needs to
scan these drivers. This allows it to find out the size of this data so
it can be allocated a build time.
Add a parser for uclass information, similar to drivers. Keep a dict of
the uclasses that were found.
Signed-off-by: Simon Glass <sjg@chromium.org>
In order to output variables to hold the priv/plat information used by
each device, dtoc needs to know the struct for each. With this, it can
declare this at build time:
u8 xxx_priv [sizeof(struct <name>)];
Collect the various struct names from the drivers.
Signed-off-by: Simon Glass <sjg@chromium.org>
We should ignore anything in the .git directory or any of the
build-sandbox, etc. directories created by 'make check'. These can confuse
dtoc. Update the code to ignore these.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we simply record the name of a driver parsed from its
implementation file. We also need to get the uclass and a few other
things so we can instantiate devices at build time. Add support for
collecting this information. This requires parsing each driver file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Some of these tests don't actually check anything. Add a few more checks
to complete the tests.
Also add a simple scan test that does the basics.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move the tests related to scanning into their own class, updating them
to avoid using dtb_platdata as a pass-through.
Signed-off-by: Simon Glass <sjg@chromium.org>
