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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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This function is also available as ofnode_is_enabled(), so use that
instead.
Signed-off-by: Simon Glass <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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Drop the 'get' in these names since it does not fit with the rest of
the API.
Signed-off-by: Simon Glass <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add a new function to write an integer to an ofnode (live tree or
flat tree).
Signed-off-by: Simon Glass <[email protected]>
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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 <[email protected]>
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It is normal for the length to come after the value in libfdt. Follow this
same convention with ofnode.
Signed-off-by: Simon Glass <[email protected]>
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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 <[email protected]>
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Rename constant PHY_INTERFACE_MODE_NONE to PHY_INTERFACE_MODE_NA to make
it compatible with Linux' naming.
Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
Reviewed-by: Ramon Fried <[email protected]>
Reviewed-by: Vladimir Oltean <[email protected]>
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Rename constant PHY_INTERFACE_MODE_COUNT to PHY_INTERFACE_MODE_MAX to
make it compatible with Linux' naming.
Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
Reviewed-by: Vladimir Oltean <[email protected]>
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Add helpers ofnode_read_phy_mode() and dev_read_phy_mode() to parse the
"phy-mode" / "phy-connection-type" property. Add corresponding UT test.
Use them treewide.
This allows us to inline the phy_get_interface_by_name() into
ofnode_read_phy_mode(), since the former is not used anymore.
Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Ramon Fried <[email protected]>
Tested-by: Patrice Chotard <[email protected]>
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Add helpers ofnode_get_phy_node() and dev_get_phy_node() and use it in
net/mdio-uclass.c function dm_eth_connect_phy_handle(). Also add
corresponding UT test.
This is useful because other part's of U-Boot may want to get PHY ofnode
without connecting a PHY.
Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Ramon Fried <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add new function to get ethernet phy id from compatible property
of the mdio phy node.
Signed-off-by: Michal Simek <[email protected]>
Signed-off-by: T Karthik Reddy <[email protected]>
Link: https://lore.kernel.org/r/16019efb3820a50330935fdaae191cec1f101b5c.1645627539.git.michal.simek@xilinx.com
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At present we support reading a string list a string at a time. Apart
from being inefficient, this makes it impossible to separate reading of
the devicetree into the of_to_plat() method where it belongs, since any
code which needs access to the string must read it from the devicetree.
Add a function which returns the string property as an array of pointers
to the strings, which is easily used by clients.
Signed-off-by: Simon Glass <[email protected]>
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The current API is outdated as it requires a devicetree pointer.
Move these functions to use the ofnode API and update this globally. Add
some tests while we are here.
Correct the call in exynos_dsim_config_parse_dt() which is obviously
wrong.
Signed-off-by: Simon Glass <[email protected]>
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Add helper to compare node names.
Signed-off-by: Kishon Vijay Abraham I <[email protected]>
Signed-off-by: Lokesh Vutla <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Fixed a defect of a null pointer being discovered by Coverity Scan:
CID 331544: Null pointer dereferences (REVERSE_INULL)
Null-checking "size" suggests that it may be null, but it has already been
dereferenced on all paths leading to the check.
Signed-off-by: Chen Guanqiao <[email protected]>
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Add function for retrieving full node path of a given ofnode.
This uses np->full_name if OF is live, otherwise a call to
fdt_get_path() is made.
Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Miquel Raynal <[email protected]>
Tested-by: Patrice Chotard <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>
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Add functions ofnode_get_addr_size_index_notrans(), which is a
non-translating version of ofnode_get_addr_size_index().
Some addresses are not meant to be translated, for example those of MTD
fixed-partitions.
Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Miquel Raynal <[email protected]>
Tested-by: Patrice Chotard <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>
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This reverts commit d64b9cdcd475eb7f07b49741ded87e24dae4a5fc.
As pointed by [1] and [2], the reverted patch made every DT 'reg'
property translatable. What the patch was trying to fix was fixed in a
different way from previously submitted patches which instead of
correcting the generic address translation function fixed the issue with
appropriate platform code.
[1] https://patchwork.ozlabs.org/project/uboot/patch/[email protected]/
[2] https://lore.kernel.org/linux-clk/[email protected]/T/
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Add functions to add size of addresses in the device tree using ofnode
references.
If the size is not set, return FDT_SIZE_T_NONE.
Signed-off-by: Chen Guanqiao <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add the following functions to get a specific device's DMA ranges:
- dev_get_dma_range()
- ofnode_get_dma_range()
- of_get_dma_range()
- fdt_get_dma_range()
They are specially useful in oder to be able validate a physical address
space range into a bus's and to convert addresses from and to address
spaces.
Signed-off-by: Nicolas Saenz Julienne <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Tested-by: Peter Robinson <[email protected]>
Signed-off-by: Matthias Brugger <[email protected]>
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Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.
Signed-off-by: Simon Glass <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
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The __of_translate_address routine translates an address from the
device tree into a CPU physical address. A note in the description of
the routine explains that the crossing of any level with
since inherited from IBM. This does not happen for Texas Instruments, or
at least for the beaglebone device tree. Without this patch, in fact,
the translation into physical addresses of the registers contained in the
am33xx-clocks.dtsi nodes would not be possible. They all have a parent
with #size-cells = <0>.
The CONFIG_OF_TRANSLATE_ZERO_SIZE_CELLS symbol makes translation
possible even in the case of crossing levels with #size-cells = <0>.
The patch acts conservatively on address translation, except for
removing a check within the of_translate_one function in the
drivers/core/of_addr.c file:
+
ranges = of_get_property(parent, rprop, &rlen);
- if (ranges == NULL && !of_empty_ranges_quirk(parent)) {
- debug("no ranges; cannot translate\n");
- return 1;
- }
if (ranges == NULL || rlen == 0) {
offset = of_read_number(addr, na);
memset(addr, 0, pna * 4);
debug("empty ranges; 1:1 translation\n");
There are two reasons:
1 The function of_empty_ranges_quirk always returns false, invalidating
the following if statement in case of null ranges. Therefore one of
the two checks is useless.
2 The implementation of the of_translate_one function found in the
common/fdt_support.c file has removed this check while keeping the one
about the 1:1 translation.
The patch adds a test and modifies a check for the correctness of an
address in the case of enabling translation also for zero size cells.
The added test checks translations of addresses generated by nodes of
a device tree similar to those you can find in the files am33xx.dtsi
and am33xx-clocks.dtsi for which the patch was created.
The patch was also tested on a beaglebone black board. The addresses
generated for the registers of the loaded drivers are those specified
by the AM335x reference manual.
Signed-off-by: Dario Binacchi <[email protected]>
Tested-by: Dario Binacchi <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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A recent change to unify the flattree/livetree code introduced a small
size increase in SPL on some boards. For example SPL code size for
px30-core-ctouch2-px30 increased by 40 bytes.
To address this we can take advantage of the fact that some of the ofnode
functions are only called a few times in SPL, so it is worth inlining
them.
Add new Kconfig options to control this. These functions are not inlined
for U-Boot proper, since this increases code size.
Fixes: 2ebea5eaebf ("dm: core: Combine the flattree and livetree binding code")
Signed-off-by: Simon Glass <[email protected]>
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Add a way to find out if a node is enabled or not, based on its 'status'
property.
Signed-off-by: Simon Glass <[email protected]>
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Add support for getting a node/property from aliases.
The similar functionality is provided for chosen node and this
implemenatation is copy of it.
Signed-off-by: Michal Simek <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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The cell_count argument is required when cells_name is NULL.
This patch adds this parameter in live tree API
- of_count_phandle_with_args
- ofnode_count_phandle_with_args
- dev_count_phandle_with_args
This parameter solves issue when these API is used to count
the number of element of a cell without cell name. This parameter
allow to force the size cell.
For example:
count = dev_count_phandle_with_args(dev, "array", NULL, 3);
Signed-off-by: Patrick Delaunay <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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In the live tree API ofnode_parse_phandle_with_args, the cell_count
argument must be used when cells_name is NULL.
But this argument is not provided to the live DT function
of_parse_phandle_with_args even it is provided to
fdtdec_parse_phandle_with_args.
This patch adds support of the cells_count parameter in dev_ and
of_node API to allow migration and support of live DT:
- of_parse_phandle_with_args
Signed-off-by: Patrick Delaunay <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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In the case of the live tree ofnode_read_addr_cells() and
ofnode_read_size_cells() return the #address-cells and #size-cells defined
in the parent node. With the patch the same is done for a non-live tree.
The only consumer of these functions is currently the CFI flash driver.
This patch fixes the incorrect parsing of the device tree leading to
'saveenv' failing on qemu_arm64_defconfig.
For testing qemu-system-aarch64 has to be called with
-drive if=pflash,format=raw,index=1,file=envstore.img
to provide the flash memory. envstore.img must be 64 MiB large.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
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Move this header out of the common header.
Signed-off-by: Simon Glass <[email protected]>
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This patch add function used to get the child count of
a ofnode or a device
Signed-off-by: Chunfeng Yun <[email protected]>
Signed-off-by: Frank Wunderlich <[email protected]>
Reviewed-by: Weijie Gao <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add functions to iterate on all property with livetree
- dev_read_first_prop
- dev_read_next_prop
- dev_read_prop_by_prop
and
- ofnode_get_first_property
- ofnode_get_next_property
- ofnode_get_property_by_prop
And helper: dev_for_each_property
For example:
struct ofprop property;
dev_for_each_property(property, config) {
value = dev_read_prop_by_prop(&property, &propname, &len);
or:
for (res = ofnode_get_first_property(node, &property);
!res;
res = ofnode_get_next_property(&property))
{
value = ofnode_get_property_by_prop(&property, &propname, &len);
....
}
Signed-off-by: Patrick Delaunay <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Now reading a 32 bit value from a device-tree property can be expressed
as reading the first element of an array with a single value.
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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The patch adds helper functions to allow reading a single indexed u32
value from a device-tree property containing multiple u32 values, that
is an array of integers.
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.
Move the compatibility features into a separate header file.
Signed-off-by: Simon Glass <[email protected]>
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Add a function to read a property from the chosen node, providing access
to its length. Update ofnode_get_chosen_string() to make use of it.
Signed-off-by: Simon Glass <[email protected]>
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Now that we have ofnode_read_prop() we can rewrite this function using
that one, reducing the amount of duplicated code.
Update ofnode_read_size() and move it up next to the other similar
functions.
Signed-off-by: Simon Glass <[email protected]>
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Add a new function to read a property that supports reading the length as
well.
Reimplement ofnode_read_string() using it and fix its comment.
Signed-off-by: Simon Glass <[email protected]>
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This function is actually intended to read a string rather than a
property. All of its current callers use it that way. Also there is no way
to return the length of the property from this function.
Rename it to better indicate its purpose, using ofnode_read as the prefix
since this matches most other functions.
Also add some tests which are missing for these functions.
Signed-off-by: Simon Glass <[email protected]>
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The FDT specification [0] gives a requirement of aligning properties on
32-bits. Make sure that the compiler is aware of this constraint when
accessing 64-bits properties.
[0]: https://github.com/devicetree-org/devicetree-specification/blob/master/source/flattened-format.rst
Signed-off-by: Jean-Jacques Hiblot <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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At present this code passes an fdt_addr_t pointer as a u64 pointer which
is not safe, since sizeof(fdt_addr_t) may be 4, e.g. with sandbox. Correct
this to avoid a stack corruption problem.
Fixes: e679d03b08 (core: ofnode: Add ofnode_get_addr_size_index)
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
[bmeng: correct one typo in the commit message]
Signed-off-by: Bin Meng <[email protected]>
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