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This uclass is intended for devices that do not need any features from the
uclass, including binding children.
This will typically be used by devices that are used to bind child devices
but do not use dm_scan_fdt_dev() to do it. That is for example the case of
several USB wrappers that have 2 child devices (1 for device and 1 for
host) but bind only one at a any given time.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This function takes an argument, blob,
but never uses it, instead uses gd->fdt_blob directly.
Fixes: e81c98649b7a ("dm: core: add clocks node scan")
Reported-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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It was returning an int, which doesn't work if the u32 it is reading,
or the default value, will overflow a signed int.
While it could be made to work, when using a C standard/compiler where
casting negative signed values to unsigned has a defined behavior,
combined with careful casting, it seems obvious one is meant to use
ofnode_read_s32_default() with signed values.
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
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Add ofnode_get_addr_size_index function to fetch the address
and size of the reg space based on index.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Update the condition to translate only if this is enabled for SPL.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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Testing has shown that the current DM implementation of a platform /
board specific translation offset, as its needed for the SPL on MVEBU
platforms is buggy. The translation offset is confingured too late,
after the driver bind functions are run. This may result in incorrect
address translations. With the current implementation its not possible
to configure the offset earlier, as the DM code has not run at all.
This patch now removed the set_/get_translation_offset() calls and
moves the translation offset into the GD variable translation_offset.
This variable will get used when CONFIG_TRANSLATION_OFFSET is enabled.
This option is enabled only for MVEBU on ARM32 platforms, where its
currenty needed and configured in the SPL.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Pierre Bourdon <delroth@gmail.com>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Simon Glass <sjg@chromium.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Tested-by: Pierre Bourdon <delroth@gmail.com>
Tested-by: Baruch Siach <baruch@tkos.co.il>
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Boards such as qemu-riscv, which receive their device tree at runtime,
for example from QEMU or firmware, are unable to add the appropriate
device tree properties to make devices available pre relocation.
Instead, they must rely on the DM_FLAG_PRE_RELOC flag to be set for the
required drivers.
Add the DM_FLAG_PRE_RELOC flag to the simple-bus driver to make devices
under it with drivers that have set the flag as well available pre
relocation for these boards.
Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
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The function dm_ofnode_pre_reloc should be used instead
of the function dm_fdt_pre_reloc and avoid duplicated code.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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v2019.04-rc3 sandbox U-Boot fails to boot when compiled with
-fsanitize=address and linked against -lasan, reporting [1].
Git bisecting shows that the issue is contributed by v2019.01 commit
1678754f5e2c ("core: ofnode: Fix ofnode_get_addr_index function").
The root cause seems to be the mismatch between sizeof(u64) and
sizeof(fdt_size_t) on sandbox. Luckily, thanks to the fact that the
size argument of both of_get_address() and fdtdec_get_addr_size_fixed()
is optional, we can pass NULL in its place, avoiding the problem.
[1] Backtrace reported by ASAN (gcc 8.1.0):
$> ./u-boot -d arch/sandbox/dts/sandbox.dtb
[..]
Reviewed-by: Simon Glass <sjg@chromium.org>
=================================================================
==10998==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffcc2331140 at pc 0x0000004eeeb0 bp 0x7ffcc2330f80 sp 0x7ffcc2330f70
WRITE of size 8 at 0x7ffcc2331140 thread T0
#0 0x4eeeaf in of_get_address drivers/core/of_addr.c:154
#1 0x4f7441 in ofnode_get_addr_index drivers/core/ofnode.c:263
#2 0x5b2a78 in sb_eth_ofdata_to_platdata drivers/net/sandbox.c:422
#3 0x4dccd8 in device_probe drivers/core/device.c:407
#4 0x753170 in eth_initialize net/eth-uclass.c:428
#5 0x47d9bf in initr_net common/board_r.c:557
#6 0x6bcfa7 in initcall_run_list lib/initcall.c:30
#7 0x47e1fe in board_init_r common/board_r.c:859
#8 0x4060e5 in main arch/sandbox/cpu/start.c:356
#9 0x7fb8d135482f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#10 0x40a3a8 in _start (/path/to/u-boot/u-boot+0x40a3a8)
Address 0x7ffcc2331140 is located in stack of thread T0 at offset 32 in frame
#0 0x4f72b8 in ofnode_get_addr_index drivers/core/ofnode.c:255
This frame has 3 object(s):
[32, 36) 'size' <== Memory access at offset 32 partially overflows this variable
[96, 100) 'flags'
[160, 168) 'node'
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow drivers/core/of_addr.c:154 in of_get_address
Shadow bytes around the buggy address:
0x10001845e1d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10001845e1e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10001845e1f0: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
0x10001845e200: 04 f2 f2 f2 f2 f2 f2 f2 04 f2 f2 f2 f2 f2 f2 f2
0x10001845e210: 04 f2 f2 f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00
=>0x10001845e220: 00 00 00 00 f1 f1 f1 f1[04]f2 f2 f2 f2 f2 f2 f2
0x10001845e230: 04 f2 f2 f2 f2 f2 f2 f2 00 f2 f2 f2 f3 f3 f3 f3
0x10001845e240: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10001845e250: 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2 f3 f3 f3 f3
0x10001845e260: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1
0x10001845e270: f1 f1 00 f2 f2 f2 f3 f3 f3 f3 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==10998==ABORTING
'To' list:
git log --since=1year drivers/core/ofnode.c | grep "\-by: .*@" | \
sed 's/.*-by: //' | sort | uniq -c | sort -rn
10 Simon Glass <sjg@chromium.org>
3 Mario Six <mario.six@gdsys.cc>
2 Martin Fuzzey <mfuzzey@parkeon.com>
2 Marek Vasut <marek.vasut+renesas@gmail.com>
1 Tom Rini <trini@konsulko.com>
1 Masahiro Yamada <yamada.masahiro@socionext.com>
1 Keerthy <j-keerthy@ti.com>
1 Jens Wiklander <jens.wiklander@linaro.org>
1 Bin Meng <bmeng.cn@gmail.com>
Fixes: 1678754f5e2c ("core: ofnode: Fix ofnode_get_addr_index function")
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
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Change the function syscon_regmap_lookup_by_phandle()
introduced by commit 6c3af1f24e4b ("syscon: dm: Add a
new method to get a regmap from DTS") to have
Linux-compatible syscon API.
Same modification than commit e151a1c288bd ("syscon: add
Linux-compatible syscon API") solves issue when the node
identified by the phandle has several compatibles and is
already bound to a dedicated driver.
See Linux commit bdb0066df96e ("mfd: syscon: Decouple syscon
interface from platform devices").
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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We can remove the pre reloc property in SPL and TPL device-tree:
- u-boot,dm-pre-reloc
- u-boot,dm-spl
- u-boot,dm-tpl
As only the needed node are kept by fdtgrep (1st pass).
The associated function (XXX_pre_reloc) are simple for SPL/TPL:
return always true.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
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At present it is not possible to use the syscon devices for PCI devices
since a regmap is required. Since PCI uses a 3-cell address the conversion
of the 'reg' property to an address always fails. In any case, the regmap
is not useful with PCI since devices are accessed through the PCI bus
which regmap does not support.
Add a special case for PCI syscon devices, so that they don't set up a
regmap.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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- DM I2C improvements
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While uclass_find_device() fails with -ENODEV in case of list_empty
strangely uclass_find_first_device() returns 0.
Fix uclass_find_first_device() to also fail with -ENODEV instead.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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It is wrapper for calling of_alias_get_highest_id() when live tree is
enabled and fdtdec_get_alias_highest_id() if not.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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The same functionality was added to Linux for i2c bus registration with this
commit message:
"
of: base: add function to get highest id of an alias stem
I2C supports adding adapters using either a dynamic or fixed id. The
latter is provided by aliases in the DT case. To prevent id collisions
of those two types, install this function which gives us the highest
fixed id, so we can then let the dynamically created ones come after
this highest number.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
"
Add it also to U-Boot for DM I2C support.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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At present the 'Index' column assumes there is only one digit. But on some
devices (e.g. snow) there are a lot of regulators and GPIO banks. Adjust
the output to allow for two digits without messing up the display.
Also capatalise the heading to match.
Fixes: 5197dafc42 (dm: core: Widen the dump tree to show more of the
driver's name.)
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Liviu Dudau <liviu.dudau@foss.arm.com>
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+ Update the function syscon_node_to_regmap() to force bound on
syscon uclass and directly use the list of device from DM.
+ Remove the static list syscon_list.
This patch avoid issue (crash) when syscon_node_to_regmap() is called
before and after reallocation (list content is invalid).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
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The current dev_read...() functions use s32 and u32 which are convenient
for device tree but not so useful for normal code, which often wants to
use normal integers for values.
Add a helper which supports returning an unsigned int. Also add signed
versions of the unsigned readers.
Signed-off-by: Simon Glass <sjg@chromium.org>
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- DM_I2C_COMPAT removal for all ti platforms from Jean-Jacques Hiblot
- Fix in i2c command help output from Chirstoph Muellner.
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To reset the DM after a new dtb is loaded, we need to call dm_uninit()
and then dm_init(). This fails however because gd->dm_root is not nullified
by dm_uninit().
Fixing it by setting gd->dm_root in dm_uninit().
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
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It is currently not possible to include the support to remove devices in
the SPL. This is however needed by platforms that re-select their dtb after
DM is initialized; they need to remove all the previously bound devices
before triggering a scan of the new DT.
Add a Kconfig option to be able to include the support for device removal
in the SPL.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Seeries-changes:3
- update commit message
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
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If OF_CONTROL is not enabled and DM_SEQ_ALIAS is enabled, we must
assign an alias (requested sequence number) to devices that belongs to a
class with the DM_UC_FLAG_SEQ_ALIAS flag. Otherwise
uclass_find_device_by_seq() cannot be used to get/probe a device. In
particular i2c_get_chip_for_busnum() cannot be used.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
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syscon_regmap_lookup_by_phandle() can be used to get the regmap of a syscon
device from a reference in the DTS. It operates similarly to the linux
version of the namesake function.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This functions allow us to get and remap I/O addresses by name, which is useful when there are multiple reg addresses indexed by reg-names property.
This is needed in bmips dma/eth patch series, but can also be used on many
other drivers.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Currently the else part of ofnode_get_addr_index function
does not fetch addresses based on the index but rather just
returns the base address. Fix that.
Signed-off-by: Keerthy <j-keerthy@ti.com>
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Add two functions which can find a child device by uclass or by name.
The first is useful with Multi-Function-Devices (MFDs) to find one of a
particular type. The second is useful when only the name is known.
Signed-off-by: Simon Glass <sjg@chromium.org>
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This function may be useful to code outside of the code driver-model
implementation. Export it and add a test.
Signed-off-by: Simon Glass <sjg@chromium.org>
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With drivers that have prefix names that are quite long (like
'versatile_') it is useful to have a wider column for the driver's
name when dumping the device driver tree.
Also update the tests to take into account the wider output format.
Signed-off-by: Liviu Dudau <liviu.dudau@foss.arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Similarly to uclass_first_device_err(), add uclass_next_device_err()
which returns an error if there are no next devices in that uclass.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Use the uclass_foreach_dev() macro instead of the open coded version.
Signed-off-by: Liviu Dudau <liviu.dudau@foss.arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Some buses need to set up their child devices after they are probed.
Support a common child_post_probe() method for the uclass.
With this change, the two APIs uclass_pre_probe_device() and
uclass_post_probe_device() become symmetric.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Add support for switching the endianness of regmap accesses via the
"little-endian", "big-endian", and "native-endian" boolean properties in
the device tree.
The default endianness is native endianness.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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It is useful to be able to treat the different ranges of a regmap
separately to be able to use distinct offset for them, but this is
currently not implemented in the regmap API.
To preserve backwards compatibility, add regmap_read_range and
regmap_write_range functions that take an additional parameter
'range_num' that identifies the range to operate on.
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
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The regmap functions currently assume that all register map accesses
have a data width of 32 bits, but there are maps that have different
widths.
To rectify this, implement the regmap_raw_read and regmap_raw_write
functions from the Linux kernel API that specify the width of a desired
read or write operation on a regmap.
Implement the regmap_read and regmap_write functions using these raw
functions in a backwards-compatible manner.
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Add some debug output in cases where the initialization of a regmap
fails.
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
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Both fdtdec_get_addr_size_fixed and of_address_to_resource can fail with
an error, which is not currently checked during regmap initialization.
Since the indentation depth is already quite deep, extract a new
'init_range' method to do the initialization.
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
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A newly created property is currently not freed if a name could not be
allocated. This patch fixes the resulting memory leak in the error
patch.
Reported-by: Coverity (CID: 184085)
Fixes: e369e58df79c ("core: Add functions to set properties in live-tree")
Signed-off-by: Mario Six <mario.six@gdsys.cc>
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ofnode_read_simple_addr_cells may fail and return a negative error code.
Check for this when initializing regmaps.
Also check if both_len is zero, since this is perfectly possible, and
would lead to a division-by-zero further down the line.
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
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Document the regmap_alloc() function.
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
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Commit f2006808f099: ("dm: core: parse chosen node") added a logic
to parse the chosen node during dm_scan_fdt_node(), but unfortunately
it missed adding the same logic in dm_scan_fdt_live(). This mirrors
the logic in the livetree version.
The weird thing is that commit f2006808f099 did update the test case
to test such logic, but even if I reset to that commit, the test case
still fails, and I have no idea how it could pass.
With this fix, the following 2 test cases now pass:
Test: dm_test_bus_children: bus.c
test/dm/bus.c:112, dm_test_bus_children(): num_devices ==
list_count_items(&uc->dev_head): Expected 7, got 6
Test: dm_test_fdt: test-fdt.c
test/dm/test-fdt.c:184, dm_test_fdt(): num_devices ==
list_count_items(&uc->dev_head): Expected 7, got 6
Fixes: f2006808f099 ("dm: core: parse chosen node")
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Currently the comments of several APIs (eg: dm_init_and_scan()) say:
@pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
flag. If false bind all drivers.
The 'Pre-Relocation Support' chapter in doc/driver-model/README.txt
documents the same that both device tree properties and driver flag
are supported.
However the implementation only checks these special device tree
properties without checking the driver flag at all. This updates
lists_bind_fdt() to consider both scenarios.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Squashed in http://patchwork.ozlabs.org/patch/996473/ :
Signed-off-by: Simon Glass <sjg@chromium.org>
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This adds a new API dm_ofnode_pre_reloc(), a livetree equivalent
API of dm_fdt_pre_reloc().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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At present it is not possible to specify that a node should be used before
relocation (in U-Boot proper) without it also ending up in SPL and TPL
device trees. Add a new "u-boot,dm-pre-proper" boolean property for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present ofnode_read_fmap_entry() reads a flash map entry in a format
which is not supported by binman. To allow use to use binman-format
descriptions, update this function.
Also add a simple test.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Some devices have children and want to press an existing inactive child
into service when needed. Add a function to help with this.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Quite a few functions do not actually modify the device that is passed in.
Update the function signatures to reflect that.
Signed-off-by: Simon Glass <sjg@chromium.org>
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There is no reason why this feature should not be supported for uclass-
private data. Update the code accordingly.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Of CONFIG_OF_TRANSLATE is enabled, this function still returns
untranslated bogus results. Add the missing translation.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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