This existing code assumes that a reg property is larger than one cell,
but this is not always the case. Fix this assumption.
Also if a node's parent is missing the #address-cells and #size-cells
properties we use 2 as a default for each. But this should not happen in
practice. More likely the properties were removed for SPL due to there
being no 'u-boot,dm-pre-reloc' property, or similar. Add a warning for
this as the failure can be very confusing.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present an empty size is considered to be a 64-bit value. This does not
seem useful and wastes space. Limit the 64-bit detection to where one or
both of the addr/size is two cells or more.
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>
At present all possible files are generated, even if some of them just
have a header and an empty body. It is better to generate only the files
that are needed, so that the two types of build (based on the setting of
OF_PLATDATA_INST) can be mutually exclusive.
This is intended to fix a strange problem sometimes found with CI:
Building current source for 1 boards (1 thread, 40 jobs per thread)
sandbox: + sandbox_spl
+drivers/built-in.o: In function `dm_setup_inst':
+drivers/core/root.c:135: undefined reference to
`_u_boot_list_2_udevice_2_root'
+dts/dt-uclass.o:(.u_boot_list_2_uclass_2_serial+0x10): undefined
reference to `_u_boot_list_2_udevice_2_serial'
...
This likely happens when switching from !OF_PLATDATA_INST to
OF_PLATDATA_INST since running 'make xxx_defconfig" does not currently
cause any change in which files are generated. With !OF_PLATDATA_INST
the dt-device.c file has no declarations and this is assumed to be the
starting state. The error above seems to indicate that, after changing
to OF_PLATDATA_INST, the dt-uclass.c file is regenerated but the
dt-device.c files is not. This does not seem possible from the relevant
Makefile.spl rule:
u-boot-spl-platdata := $(obj)/dts/dt-plat.o $(obj)/dts/dt-uclass.o
$(obj)/dts/dt-device.o
cmd_dtoc = $(DTOC_ARGS) -c $(obj)/dts -C include/generated all
include/generated/dt-structs-gen.h $(u-boot-spl-platdata_c) &: \
$(obj)/$(SPL_BIN).dtb
@[ -d $(obj)/dts ] || mkdir -p $(obj)/dts
$(call if_changed,dtoc)
It seems that this cannot regenerate dt-uclass.c without dt-device.c since
'dtoc all' is used. So here the trail ends for now.
In any case it seems better to generate files that are uses and not bother
with those that serve no purpose. So update dtoc to do this automatically.
Signed-off-by: Simon Glass <sjg@chromium.org>
We can use extern instead, so let's drop these macros. It adds one more
thing to learn about and doesn't make the code any clearer.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Add support for generating a file containing udevice instances. This
avoids the need to create these at run time.
Update a test uclass to include a 'per_device_plat_auto' member, to
increase test coverage.
Add another tab to the driver_info output so it lines up nicely like the
device-instance output.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add support for generating a file containing uclass instances. This avoids
the need to create these at run time.
Update a test uclass to include a 'priv_auto' member, to increase test
coverage.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a summary to the top of the generated code, to make it easier to see
what the file contains.
Also add a tab to .plat so that its value lines up with the others.
Signed-off-by: Simon Glass <sjg@chromium.org>
This file is not used when instantiating devices. Update dtoc to skip
generating its contents and just add a comment instead.
Also it is useful to see the driver name and parent for each device.
Update the file to show that information, to avoid updating the same
tests twice.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add an option to generate the declaration file, which declares all
drivers and uclasses, so references can be used in the code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add an option to instantiate devices at build time. For now this just
parses the option and sets up a few parameters.
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>
Now that we have the alias information we can assign a sequence number
to each device in the uclass. Store this in the node associated with each
device.
This requires renaming the sandbox test drivers to have the right name.
Note that test coverage is broken with this patch, but fixed in the next
one.
Signed-off-by: Simon Glass <sjg@chromium.org>
Scan the aliases in the device tree to establish the number of devices
within each uclass, and the sequence number of each.
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>
Add logic to assign property values to nodes as required by dtoc. The
references allow nodes to refer to each other in C code. The macros used
by dtoc are not yet defined in driver model. They will be added along
with the actual driver model implementation.
Signed-off-by: Simon Glass <sjg@chromium.org>
These have '_test' suffixes which are not present on the drivers in the
source code. Drop the suffixes to avoid a mismatch when scanning.
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>
At present most of the tests scan the U-Boot source tree as part of their
run. This information does not change across tests, so we can save time
by remembering it.
Add a way to set up this information and use it for each test, taking a
copy first, so as not to mess up the original.
This reduces the run time from about 1.6 seconds to 1.5 seconds on my
machine. For code coverage (which cannot run in parallel), it reduces from
33 seconds to 5.
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>
Before expanding the scanning features any more, move this into a separate
file. This will make it easier to maintain in the future. In particular,
it reduces the size of dtb_platdata.py and allows us to add tests
specifically for scanning, without going through that file.
The pieces moved are the Driver class, the scanning code and the various
naming functions, since they mostly depend on the scanning results.
So far there is are no separate tests for src_scan. These will be added
as new functionality appears.
This introduces no functional change.
Signed-off-by: Simon Glass <sjg@chromium.org>
This has not been needed since parent information was added and we started
using indicies for references to other drivers instead of pointers. It was
kept around in the expectation that it might be needed later.
However with the latest updates, it doesn't seem likely that we'll need
this in the foreseeable future.
Drop dm_populate_phandle_data() from dtoc and driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Previously we had to worry about nodes being output before those that they
depended on, thus causing build errors. So the current algorithm is
careful to output nodes in the right order.
We now use a different method for outputting phandles that does not
involve pointers. Also we plan to add a 'declarations' header file to
declare all drivers as 'extern'.
Update the code to drop the dependency checking and output in a simple
loop. This makes the output easier to follow since drivers are in order of
thier indices (0, 1, ...), which is also the order it appears in in the
linker list.
Signed-off-by: Simon Glass <sjg@chromium.org>
The base directory of U-Boot, where the source is, it currently calculated
from the directory of the dtb_platdata.py script. If this is installed
elsewhere that will not work. Also it is inconvenient for tests.
Add a parameter to allow specifying this base directory.
To test this, pass a temporary directory with some files in it and check
that they are passed to scan_driver().
Signed-off-by: Simon Glass <sjg@chromium.org>
Use this new name to be consistent with the rest of U-Boot, which talks
about 'plat' for the platform data, which is what this file holds.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is currently fairly obvious what the two generated files are for, but
this will change as more are added. It is helpful for readers to describe
the purpose of each file.
Add a header commment field to OutputFile and use it to generate a comment
at the top of each file.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current macro is a misnomer since it does not declare a device
directly. Instead, it declares driver_info record which U-Boot uses at
runtime to create a device.
The distinction seems somewhat minor most of the time, but is becomes
quite confusing when we actually want to declare a device, with
of-platdata. We are left trying to distinguish between a device which
isn't actually device, and a device that is (perhaps an 'instance'?)
It seems better to rename this macro to describe what it actually is. The
macros is not widely used, since boards should use devicetree to declare
devices.
Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is
declaring a new driver_info record, not a device.
Signed-off-by: Simon Glass <sjg@chromium.org>
With upcoming changes, dtoc will output several files for different
of-platdata components.
Add a way to output all ava!ilable files at once ('all'), to the
appropriate directories, without needing to specify each one invidually.
This puts the commands in alphabetical order, so update the tests
accordingly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Implement the 'output directory' feature, allowing dtoc to write the
output files separately to the supplied directories. This allows us to
handle the struct and platdata output in one run of dtoc.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present dtoc writes only a single file on each invocation. U-Boot
writes the two files it needs by separate invocations of dtoc. Since dtoc
now scans all U-Boot driver source, this is fairly slow (about 1 second
per file).
It would be better if dtoc could write all the files at once.
In preparation for this, add a way to specify an output directory for the
files.
Signed-off-by: Simon Glass <sjg@chromium.org>
Normally dtoc outputs to a file but it also offers a way to write output
to stdout. At present the test for that does not actually check that the
output is correct. Add this to the test.
This uses a member variable to hold the expected text, so it can be used
in muitiple places.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present dtoc uses '-' internally to mean that output should go to
stdout. This is not necessary and None is more convenient. Update it.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present this member holds a simple list of driver names. Update it to
be a dict of DriverInfo, with the name being the key. This will allow more
information to be added about each driver, in future patches.
Signed-off-by: Simon Glass <sjg@chromium.org>
The spl-test4 node deliberately has an invalid compatible string. This
causes a warning from dtoc and the check it does is not really necessary.
Drop it, to avoid the warning and associated confusion.
Signed-off-by: Simon Glass <sjg@chromium.org>
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).
Rename some of the latter variables to end with 'plat' for consistency.
Signed-off-by: Simon Glass <sjg@chromium.org>
Use an Enum instead of the current ad-hoc constants, so that there is a
data type associated with each 'type' value.
Signed-off-by: Simon Glass <sjg@chromium.org>
With of-platdata, the devicetree is supposed to specify all the devices
in the system. So far this hasn't really mattered since of-platdata still
works correctly.
However, new of-platdata features rely on numbering the devices in a
particular order so that they can be referenced by a single integer. It is
tricky to implement this efficiently when other devices are present in the
build.
To address this, disable use of U_BOOT_DEVICE() when of-platdata is
enabled. This seems acceptable as it is not supposed to be used at all,
except in SPL/TPL, where of-platdata is the recommended approach.
This breaks one non-compliant boards at present: mx6cuboxi
Signed-off-by: Simon Glass <sjg@chromium.org>
(disable CONFIG_IMX_THERMAL for mx6cuboxi to avoid a build error)
At present we use a 'node' pointer in the of-platadata phandle_n_arg
structs. This is a pointer to the struct driver_info for a particular
device, and we can use it to obtain the struct udevice pointer itself.
Since we don't know the struct udevice pointer until it is allocated in
memory, we have to fix up the phandle_n_arg.node at runtime. This is
annoying since it requires that SPL's data is writable and adds a small
amount of extra (generated) code in the dm_populate_phandle_data()
function.
Now that we can find a driver_info by its index, it is easier to put the
index in the phandle_n_arg structures.
Update dtoc to do this, add a new device_get_by_driver_info_idx() to look
up a device by drive_info index and update the tests to match.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present of-platdata does not provide parent information. But this is
useful for I2C devices, for example, since it allows them to determine
which bus they are on.
Add support for setting the parent correctly, by storing the parent
driver_info index in dtoc and reading this in lists_bind_drivers(). This
needs multiple passes since we must process children after their parents
already have been bound.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present an integer is converted to bytes incorrectly. The whole 32-bit
integer is inserted as the first element of the byte array, and the other
three bytes are skipped. This was not noticed because the unit test did
not check it, and the functional test was checking for wrong values.
Update the code to handle this as a special case. Add one more test to
cover all code paths.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the structures are written in name order, but parents have to
be written before their children, so the file does not end up being in
order. The order of nodes in _valid_nodes matches the order of the
devicetree.
Update the code so that _valid_nodes is in sorted order, by C name of
the structure. This allows us to assign a sequential ordering to each
U_BOOT_DEVICE() declaration.
U-Boot's linker lists are also ordered alphabetically, which means that
the order in the driver_info list will match the order used by dtoc. This
defines an index ('idx') for the U_BOOT_DEVICE declarations. They appear
in alphabetical order, numbered from 0 in _valid_nodes and in the
driver_info linker list.
Add a comment against each declaration, showing the idx value.
Signed-off-by: Simon Glass <sjg@chromium.org>
After latest improvements in dtoc, compatible strings are checked
against driver and driver alias list to get a valid driver name. With
this new feature the list of compatible string aliases seems not
useful any more.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Currently dtoc checks if the first compatible string in a dtb node
matches either a driver o driver alias name, without taking into account
any other compatible string in the list. In the case that no driver matches
the first compatible string a warning is printed and the U_BOOT_DEVICE is
not being declared correctly.
This patch adds dtoc's support for try all the compatible strings in the
dtb node, in an effort to find the correct driver.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add an additional test to dtoc in order improve the coverage,
specifically to take into account the case of unicode error when
scanning drivers.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
The start of an ACPI path typically has backslashes in it. These are not
preserved during the translation from device tree to C code, since dtc
(correctly) uses the first backslash as an escape character, and dtoc
therefore leaves it out of the C string.
Fix this with special-case handling.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a test for dtoc taking into account the cd-gpios property.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
