The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
We should only perform additional iteration steps when needed to
initialize the parent of a device. Other binding errors (such as a
missing driver) should not lead to additional iteration steps.
Unnecessary iteration steps can cause issues when memory is tightly
constrained (such as in the TPL/SPL) since device_bind_by_name()
unconditionally allocates memory for a struct udevice. On the SanCloud
BBE this led to boot failure caused by memory exhaustion in the SPL
when booting from SPI flash.
Signed-off-by: Paul Barker <paul.barker@sancloud.com>
Use dot instead of comma. The fix doesn't affect anything but it is good to
be aligned with used pattern. The first is used only for string size
calculation and the second change is in the comment.
Fixes: db681d4929 ("net: phy: Add new read ethernet phy id function")
Signed-off-by: Michal Simek <michal.simek@amd.com>
When probing a device fails NULL pointer is returned, and following
devices in uclass list cannot be iterated. Skip to next device on error
instead.
With that the only condition under which these simple iteration
functions return error is when the dm is not initialized at uclass_get
time. This is not all that interesting, change return type to void.
Fixes: 6494d708bf ("dm: Add base driver model support")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This is needed in the platforms that use "ranges" node property for
address translation in their dts for TPL.
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The call to device_bind_with_driver_data() passes id->data but if
the entry has no of_match then the id has not been set by the selected
driver.
Normally this passes unnoticed since a previous driver likely had an
of_match value, so the id is set to that. Of course it is not correct
to pass the id->data from a different driver.
With clang-14 the driver ordering is such that the id is never actually
set in the 'bind /usb@1 usb_ether' line in test_bind_unbind_with_node()
thus causing a crash.
Fix this by passing 0 if the of_match for a driver does not exist.
Signed-off-by: Simon Glass <sjg@chromium.org>
There are no longer any platforms which do not enable DM, move this to a
def_bool y and remove the check in the Makefile.
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The _err variant iterators use the simple iterators without suffix as
basis.
However, there is no user that uclass_next_device_err for iteration,
many users of uclass_first_device_err use it to get the first and
(assumed) only device of an uclass, and a couple that use
uclass_next_device_err to get the device following a known device in the
uclass list.
While there are some truly singleton device classes in which more than
one device cannot exist these are quite rare, and most classes can have
multiple devices even if it is not the case on the SoC's EVB.
In a later patch the simple iterators will be updated to not stop on
error and return next device instead. With this in many cases the code
that expects the first device or an error if it fails to probe may get
the next device instead. Use the _check iterators as the basis of _err
iterators to preserve the old behavior.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
uclass_probe_all uses uclass_first_device/uclass_next_device assigning
the return value.
The interface for getting meaningful error is
uclass_first_device_check/uclass_next_device_check, use it.
Also do not stop iteration when an error is encountered. Probing all
devices includes those that happen to be after a failing device in the
uclass order.
Fixes: a59153dfeb ("dm: core: add function uclass_probe_all() to probe all devices")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
A recent change to regmap breaks building of phycore-rk3288 for me. The
difference is only a few bytes. Somehow CI seems to pass, even though it
fails when I run docker locally. But it prevents me from sending any more
pull requests.
In any case this board is clearly near the limit. We could revert the
offending change, but it is needed for sandbox tests.
Instead, add a way to drop the range checks in SPL, since they end up
doing nothing if everything is working as expected.
This makes phycore-rk3288 build again for me and reduces the size of SPL
slightly for a number of boards.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 947d4f132b ("regmap: fix range checks")
On the 32bit ARM sandbox 'dm ut dm_test_devm_regmap' fails with an abort.
This is due to incorrect range checks.
On 32-bit systems the size of size_t and int is both 32 bit. The expression
(offset + val_len) is bound to overflow if offset == -1. Add an overflow
check.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
At present ofnode_write_prop() is inconsistent between livetree and
flattree, in that livetree requires the caller to ensure the property
value is stable (e.g. in rodata or allocated) but flattree does not, since
it makes a copy.
This makes the API call a bit painful to use, since the caller must do
different things depending on OF_LIVE.
Add a new 'copy' argument which tells the function to make a copy if
needed. Add some tests to cover this behaviour.
Signed-off-by: Simon Glass <sjg@chromium.org>
We need to be able to look up phandles in any FDT, not just the control
FDT. Use the 'other' FDT to test this, with a helper function which gets
this as an oftree that can then we used as needed.
Add a few more tests and some comments at the top of the file, to explain
what is going on.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add the logic to redirect requests for the device tree through a function
which can look up the tree ID. This works by using the top bits of
ofnode.of_offset to encode a tree.
It is assumed that there will only be a few device trees used at runtime,
typically the control FDT (always tree ID 0) and possibly a separate FDT
to be passed the OS.
The maximum number of device trees supported at runtime is 8, with this
implementation. That would use bits 30:28 of the node-offset value,
meaning that the positive offset range is limited to bits 27:0, versus
30:1 with this feature disabled. That still allows a device tree of up
to 256MB, which should be enough for most FITs. Larger ones can be
supported by using external data with the FIT, or by enabling OF_LIVE.
Update the documentation a little and fix up the comment for
ofnode_valid().
Signed-off-by: Simon Glass <sjg@chromium.org>
At present, unless OF_LIVE is enabled, ofnode only supports access to one
device tree, the control FDT. This is because only the node offset is
encoded in ofnode, with the tree being implicit.
This makes ofnode (without OF_LIVE) unsuitable for device tree fixups, as
implemented by ft_board_setup() and other such functions.
To solve this, we can use the top bits of the node offset to hold a tree
ID.
Add the definitions for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
This function turns out to be a little confusing since it looks up a path
and also registers the tree. Split it into two, one that gets the root
node and one that looks up a path, so the purpose is clear.
Registering the tree will happen in a function to be added in a later
patch, called oftree_from_fdt().
Signed-off-by: Simon Glass <sjg@chromium.org>
In some cases we want to obtain an ofnode in the same tree as a different
ofnode, such as when looking up a subnode. At present this is trivial,
since there is only one tree. When there are multiple trees, this
implementation will change.
Also move the ofnode_to_offset() function up higher in the header file,
since we will need to provide a different implementation with multiple
trees.
Signed-off-by: Simon Glass <sjg@chromium.org>
When we have multiple trees, the ofnode logic needs to be told which one
to use. Create a new function which takes an oftree argument, along with
a helper to obtain the FDT pointer from an oftree.
Signed-off-by: Simon Glass <sjg@chromium.org>
The flat device tree is assumed to be the control FDT but this is not
always the case. Update the ofnode implementation to obtain the node via
an function call so we can eventually add support for selecting different
trees.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current tests do not cover all the behaviour. Add some more.
Tidy up a few inconsistencies between livetree and flattree which come to
light with these tests. Also drop the -ENODATA error since it is never
actually returned.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current implementation creates a 'name' value for every node. This
is not needed for the latest device tree format, which includes a name in
the node header.
Adjust the code to point the name at the node header instead.
Also simplify ofnode_get_name(), now that we can rely on it to set the
name correctly. Update the comment to make it clear what name the root
node has.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current name is quite unwieldy. Change it to use an ofprop_ prefix
and shorten it. Fix the return-value comment while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
Update the function to mark it with the const attribute. Also avoid
calling it multiple times in the devfdt_get_addr_index() function.
Signed-off-by: Simon Glass <sjg@chromium.org>
Now that we support writing to ofnodes, the const is not accurate. Drop
it to avoid undesirable casting.
Also drop the ofnode_to_npw() which is now the same as ofnode_to_np().
Signed-off-by: Simon Glass <sjg@chromium.org>
Add this feature to the ofnode interface, supporting both livetree and
flattree. If the node exists it is returned, along with a -EEXIST error.
Update the functions it calls to handle this too.
Signed-off-by: Simon Glass <sjg@chromium.org>
This function currently assumes that the control FDT is used. Update it
to allow a root node to be passed, so it can work with any tree.
Also add a comment to ofnode_get_by_phandle() so that its purpose is
clear.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add functions to read 8/16-bit integers like the existing functions for
32/64-bit to simplify read of 8/16-bit integers from device tree
properties.
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
In generally it is not permitted to implement an ofnode function only for
flat tree or live tree. Both must be supported. Also the code for
live tree access should be in of_access.c rather than ofnode.c which is
really just for holding the API-conversion code.
Update ofnode_write_prop() accordingly and fix the test so it can work
with flat tree too.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present ofnode only works with a single device tree, for the most part.
This is the control FDT used by U-Boot.
When booting an OS we may obtain a different device tree and want to
modify it. Add some initial support for this into the ofnode API.
Note that we don't permit aliases in this other device tree, since the
of_access implementation maintains a list of aliases collected at
start-up. Also, we don't need aliases to do fixups in the other FDT. So
make sure that flat tree and live tree processing are consistent in this
area.
Signed-off-by: Simon Glass <sjg@chromium.org>
Replace logically correct word in the description.
Fixes: 91a91ff804 ("dm: Add Kconfig options for driver model SPL support")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Reviewed-by: Simon Glass <sjg@chromium.org>
If parameter drv of lists_bind_fdt() is specified, we shall bind only to
this very driver and to no other.
If the driver drv has an of_match property, we shall only bind to the
driver if it matches the compatible string of the device.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
If parameter drv of lists_bind_fdt() is specified, we want to bind to this
specific driver even if its field of_match is NULL.
If entry->of_match is NULL, we should not dereference it in a debug
statement.
Fixes: d3e773613b ("dm: core: Use U-Boot logging instead of pr_debug()")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tighten up symbol dependencies in a number of places. Ensure that a TPL
specific option has at least a direct dependency on TPL. In places
where it's clear that we depend on something more specific, use that
dependency instead.
Reported-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Add an option to tell SPL to show memory usage for driver model just
before it boots into the next phase.
Signed-off-by: Simon Glass <sjg@chromium.org>
This command shows the memory used by driver model along with various
hints as to what it might be if some 'core' tags were moved to use the
tag list instead of a core (i.e. always-there) pointer.
This may help with future work to reduce memory usage.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a function for collecting the amount of memory used by driver model,
including devices, uclasses and attached data and tags.
This information can provide insights into how to reduce the memory
required by driver model. Future work may look at execution speed also.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present tag numbers are only allocated for non-core data, meaning that
the 'core' data, like priv and plat, are accessed through dedicated
functions.
For debugging and consistency it is convenient to use tags for this 'core'
data too. Add support for this, with new tag numbers and functions to
access the pointer and size for each.
Update one of the test drivers so that the uclass-private data can be
tested here.
There is some code duplication with functions like device_alloc_priv() but
this is not addressed for now. At some point, some rationalisation may
help to reduce code size, but more thought it needed on that.
Signed-off-by: Simon Glass <sjg@chromium.org>
This command converts pointers to addresses, but the pointers being
converted are in the image's rodata region. For sandbox this means it
is not in DRAM so it does not make sense to do this conversion.
Fix this by showing a simple pointer instead. Drop the unnecessary
@ and hex prefixes.
Signed-off-by: Simon Glass <sjg@chromium.org>
This is not a good name anymore as it does not dump everything. Rename it
to dm_dump_tree() to avoid confusion.
Signed-off-by: Simon Glass <sjg@chromium.org>
Insert an empty line after each uclass independent of whether it has
devices or not.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
We have some nice macros for iterating over devices in device.h, but they
are not used by the driver core. Convert all the users I could find.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
