Michal Simek [Tue, 27 Sep 2022 07:55:46 +0000 (09:55 +0200)]
xilinx: zynq: Enable early eeprom decoding
Xilinx Zynq evaluation boards have factory program content in eeprom.
Enable reading and decoding eeprom content to get information about board
name, revision and especially getting ethernet mac address.
Alexander Dahl [Fri, 30 Sep 2022 12:04:30 +0000 (14:04 +0200)]
dm: fpga: Introduce new uclass
For future DM based FPGA drivers and for now to have a meaningful
logging class for old FPGA drivers.
Suggested-by: Michal Simek <michal.simek@amd.com> Suggested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Dahl <post@lespocky.de> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20220930120430.42307-2-post@lespocky.de Signed-off-by: Michal Simek <michal.simek@amd.com>
Fabio Estevam [Mon, 3 Oct 2022 14:02:03 +0000 (11:02 -0300)]
imx8mn-ddr4-evk-u-boot: Fix broken boot
When the imx8mn.dtsi file was pulled in from Linux, the UARTs
were moved into an spba sub-node which wasn't being included
in the SPL device tree. This meant the references to the UART
weren't being handled properly and when booting the system would
constantly reboot. Fix this by adding the spba node to the spl
device tree to restore normal booting.
Based on the patch from Adam Ford for the imx8mn-beacon-kit-u-boot
board.
Fixes: 4e5114daf9eb ("imx8mn: synchronise device tree with linux") Signed-off-by: Fabio Estevam <festevam@denx.de>
Fabio Estevam [Mon, 3 Oct 2022 14:01:15 +0000 (11:01 -0300)]
imx8mn-venice-u-boot: Fix broken boot
When the imx8mn.dtsi file was pulled in from Linux, the UARTs
were moved into an spba sub-node which wasn't being included
in the SPL device tree. This meant the references to the UART
weren't being handled properly and when booting the system would
constantly reboot. Fix this by adding the spba node to the spl
device tree to restore normal booting.
Based on the patch from Adam Ford for the imx8mn-beacon-kit-u-boot
board.
Fixes: 4e5114daf9eb ("imx8mn: synchronise device tree with linux") Signed-off-by: Fabio Estevam <festevam@denx.de>
Tom Rini [Fri, 30 Sep 2022 19:52:10 +0000 (15:52 -0400)]
Merge branch '2022-09-29-dm-core-support-multiple-device-trees-in-ofnode' into next
To quote the author:
At present the ofnode interface is somewhat limited, in that it cannot
access the device tree provided by the OS, only the one used by U-Boot
itself (assuming these are separate). This prevents using ofnode functions
to handle device tree fixups, i.e. ft_board_setup() and the like.
The ofnode interface was introduced to allow a consistent API to access
the device tree, whether a flat tree or a live tree (OF_LIVE) is in use.
With the flat tree, adding nodes and properties at the start of the tree
(as often happens when writing to the /chosen node) requires copying a
lot of data for each operation. With live tree, such operations are
quite a bit faster, since there is no memory copying required. This has to
be weighed against the required memory allocation with OF_LIVE, as well
as the cost of unflattening and flattening the device tree which U-Boot
is running.
This series enables support for access to multiple device trees with the
ofnode interface. This is already available to some extent with OF_LIVE,
but some of the ofnode functions need changes to allow the tree to be
specified.
The mechanism works by using the top 1-4 bits of the device tree offset.
The sign bit is not affected, since negative values must be supported.
With this implemented, it becomes possible to use the ofnode interface
to do device tree fixups. The only current user is the EVT_FT_FIXUP
event.
This has two main benefits:
- ofnode can now be used everywhere, in preference to the libfdt calls
- live tree can eventually be used everywhere, with potential speed
improvements when larger number of fixups are used
This series is only a step along the way. Firstly, while it is possible
to access the 'fix-up' tree using OF_LIVE, most of the fixup functions use
flat tree directly, rather than the ofnode interface. These need to be
updated. Also the tree must be flattened again before it is passed to the
OS. This is not currently implemented.
With OFNODE_MULTI_TREE disabled this has almost no effect on code size:
around 4 bytes if EVENT is enabled, 0 if not. With the feature enabled,
the increase is around 700 bytes, e.g. on venice2:
$ buildman -b ofn2a venice2 -sS --step 0
Summary of 2 commits for 1 boards (1 thread, 64 jobs per thread)
01: image: Drop some other #ifdefs in image-board.c
arm: w+ venice2
48: wip
arm: (for 1/1 boards) all +668.0 text +668.0
This size increase is not too bad, considering the extra functionality,
but is too large to enable everywhere. So for now this features needs to
be opt-in only, based on EVENT.
Simon Glass [Wed, 7 Sep 2022 02:27:32 +0000 (20:27 -0600)]
dm: core: Allow copying ofnode property data when writing
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.
Simon Glass [Wed, 7 Sep 2022 02:27:30 +0000 (20:27 -0600)]
dm: core: Expand ofnode tests
The current tests do not cover all functions, nor do they cover the new
multi-tree functionality. Add and update the tests accordingly and update
the 'future work' notes in the documentation.
There is a still more testing needed for the failure cases, since at
present some ofnode functions return a libfdt error code instead of
converting it to an errno.
Simon Glass [Wed, 7 Sep 2022 02:27:28 +0000 (20:27 -0600)]
dm: core: Update comments for default-FDT ofnode functions
Some ofnode functions can only operate on the default device tree, i.e.
U-Boot's control FDT. Add comments to that effect. Fix up the reference to
device tree bindings while we are here.
Simon Glass [Wed, 7 Sep 2022 02:27:27 +0000 (20:27 -0600)]
dm: core: Complete phandle implementation using the other FDT
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.
Simon Glass [Wed, 7 Sep 2022 02:27:26 +0000 (20:27 -0600)]
dm: core: Add the ofnode multi-tree implementation
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().
Simon Glass [Wed, 7 Sep 2022 02:27:25 +0000 (20:27 -0600)]
dm: core: Add definitions for multiple ofnode trees
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.
Simon Glass [Wed, 7 Sep 2022 02:27:24 +0000 (20:27 -0600)]
dm: core: Split ofnode_path_root() into two functions
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().
Simon Glass [Wed, 7 Sep 2022 02:27:23 +0000 (20:27 -0600)]
dm: core: Allow obtaining a node offset in the same tree
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.
Simon Glass [Wed, 7 Sep 2022 02:27:22 +0000 (20:27 -0600)]
dm: core: Add a way to look up a phandle in an oftree
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.
Simon Glass [Wed, 7 Sep 2022 02:27:20 +0000 (20:27 -0600)]
dm: core: Add an ofnode function to obtain the flat tree
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.
Simon Glass [Wed, 7 Sep 2022 02:27:19 +0000 (20:27 -0600)]
dm: core: Provide a way to reset the device tree
At present there is only one device tree used by the ofnode functions,
except for some esoteric use of live tree. In preparation for supporting
more than one, add a way to reset the list of device trees.
Simon Glass [Wed, 7 Sep 2022 02:27:18 +0000 (20:27 -0600)]
dm: core: Expand integer-reading tests
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.
Simon Glass [Wed, 7 Sep 2022 02:27:15 +0000 (20:27 -0600)]
dm: core: Avoid creating a name property when unflattening
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.
Simon Glass [Wed, 7 Sep 2022 02:27:11 +0000 (20:27 -0600)]
sandbox: test: Provide an easy way to use the other FDT
Add a test flag which indicates that the 'other' FDT should be set up
ready for use. Handle this by copying in the FDT, unflattening it for
livetree tests. Free the structures when the tests have run.
We cannot use the other FDT unless we are using live tree or
OFNODE_MULTI_TREE is enabled, since only one tree is supported by the
ofnode interface in that case. Add this condition into
ut_run_test_live_flat() and update the comments.
Simon Glass [Wed, 7 Sep 2022 02:27:10 +0000 (20:27 -0600)]
sandbox: Support setting up the other FDT for testing
Provide a way to copy over the 'other' FDT when running tests. This loads
it and allocates memory for the copy, if not done already, then does the
copy.
Avoid using U-Boot's malloc() pool for these copies, at least for now,
since they are part of the test system.
Simon Glass [Wed, 7 Sep 2022 02:27:07 +0000 (20:27 -0600)]
test: Drop the UT_TESTF_LIVE_OR_FLAT flag
This was a workaround for a rare situation. Now that it will be more
common and we have a proper fix, drop the flag. We can run both types of
tests in the same sandbox executable, even if the flat device tree is
modified.
Simon Glass [Wed, 7 Sep 2022 02:27:05 +0000 (20:27 -0600)]
test: Make a copy of the device tree before running a test
When the flat device tree changes it can mess up the live tree since that
uses the flat tree for its strings. This affects only a few sandbox tests
which modify the device tree, but the number will grow as ofnode support
for writing improves.
While the control FDT is not intended to change while U-Boot is running,
some tests do so. For example, the ofnode interface only supports
modifying properties in the control FDT, so tests must use that.
To solve this problem, keep a copy of the FDT and restore it as needed
when the test is finished. The copy only happens on sandbox (except SPL
builds), to reduce memory usage and because these tests are not useful on
other boards. For other boards, a checksum is taken to ensure that nothing
changes.
It would be possible to always checksum the FDT on sandbox and only
restore it if needed, but this is slightly slower than restoring it every
time, at least with crc8.
Move the code which checks for success to the very end, for clarity.
Simon Glass [Wed, 7 Sep 2022 02:27:02 +0000 (20:27 -0600)]
dm: core: Allow adding ofnode subnodes
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.
Simon Glass [Wed, 7 Sep 2022 02:26:59 +0000 (20:26 -0600)]
test: Fix missing livetree test runs
At present the live tree tests are not run on sandbox. This bug is in two
parts, with a duplicate flag value and incorrect logic in the test runner.
This was not noticed because the bug was fixed in a later commit and does
not cause test failures.
Fix this.
Fixes: 7b1dfc9fd7e ("dm: core: Prepare for updating the device tree with ofnode") Signed-off-by: Simon Glass <sjg@chromium.org>
board_r: Relocate OF_EMBED if NEEDS_MANUAL_RELOC only
When the embedded device tree is pointed to by the __dtb_dt_*begin
symbols, it seems to be covered by the early relocation code and doesn't
need to be manually patched.
Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
board: ti: common: board_detect: Fix EEPROM read quirk for AM6 style data
The situation is similar to commit bf6376642fe8 ("board: ti: common:
board_detect: Fix EEPROM read quirk"). This is seen on a variant of
eeproms seen on some BeagleBone-AI64 which now has a mix of both 1 byte
addressing and 2 byte addressing eeproms.
Unlike the am335x (ti_i2c_eeprom_am_get) and dra7
(ti_i2c_eeprom_dra7_get) which use constant data structure which allows
us to do a complete read of the data, the
am6(ti_i2c_eeprom_am6_get) eeprom parse operation is dynamic.
This removes the option of being able to read the complete eeprom data
in one single shot.
Fortunately, on the I2C bus, we do see the following behavior: In 1
byte mode, if we attempt to read the first header data yet again, the
misbehaving 2 byte addressing device acts in constant addressing mode
which results in the header not matching up and follow on attempt at 2
byte addressing scheme grabs the correct data.
This costs us an extra ~3 milliseconds, which is a minor penalty
compared to the consistent image support we need to have.
Reported-by: Jason Kridner <jkridner@beagleboard.org> Fixes: a58147c2dbbf ("board: ti: common: board_detect: Do 1byte address checks first.") Signed-off-by: Nishanth Menon <nm@ti.com>
Andre Przywara [Wed, 21 Sep 2022 17:09:46 +0000 (18:09 +0100)]
vexpress64: also consider DTB pointer in x1
Commit c0fce929564f("vexpress64: fvp: enable OF_CONTROL") added code to
consider a potential DTB address being passed in the x0 register, or
revert to the built-in DTB otherwise.
The former case was used when using the boot-wrapper, to which we sell
U-Boot as a Linux kernel. The latter was meant for TF-A, for which we
couldn't find an easy way to use the DTB it uses itself. We have some
quirk to filter for a valid DTB, as TF-A happens to pass a pointer to
some special devicetree blob in x0 as well.
Now the TF-A case is broken, when enabling proper emulation of secure
memory (-C bp.secure_memory=1). TF-A carves out some memory at the top
of the first DRAM bank for its own purposes, and configures the
TrustZone DRAM controller to make this region secure-only. U-Boot will
then hang when it tries to relocate itself exactly to the end of DRAM.
TF-A announces this by carving out that region of the /memory node, in
the DT it passes on to BL33 in x1, but we miss that so far.
Instead of repeating this carveout in our DT copy, let's try to look for
a DTB at the address x1 points to as well. This will let U-Boot pick up
the DTB provided by TF-A, which has the correct carveout in place,
avoiding the hang.
While we are at it, make the detection more robust: the length test (is
the DT larger than 256 bytes?) is too fragile, in fact the TF-A port for
a new FVP model already exceeds this. So we test x1 first, consider 0
an invalid address, and also require a /memory node to detect a valid DTB.
And for the records:
Some asking around revealed what is really going on with TF-A and that
ominous DTB pointer in x0: TF-A expects EDK-2 as its non-secure payload
(BL33), and there apparently was some long-standing ad-hoc boot protocol
defined just between the two: x0 would carry the MPIDR register value of
the boot CPU, and the hardware DTB address would be stored in x1.
Now the MPIDR of CPU 0 is typically 0, plus bit 31 set, which is defined
as RES1 in the ARMv7 and ARMv8 architectures. This gives 0x80000000,
which is the same value as the address of the beginning of DRAM (2GB).
And coincidentally TF-A put some DTB structure exactly there, for its
own purposes (passing it between stages). So U-Boot was trying to use
this DTB, which requires the quirk to check for its validity.
Signed-off-by: Andre Przywara <andre.przywara@arm.com> Tested-by: Peter Hoyes <peter.hoyes@arm.com>
The max size is defined at architectural level. On the same commit
I have checked mostly all the other architecture and look like they are
Fixes: commit ca8a329a1b7f ("Convert CONFIG_SPL_PAD_TO et al to Kconfig") Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com> Reviewed-by: Tom Rini <trini@konsulko.com>
- autoboot: make sure watchdog device(s) are handled with keyed
autoboot (Rasmus)
- gpio_wdt: use __udelay() to avoid recursion (Rasmus)
- watchdog: max6370: use __udelay() to avoid recursion (Pali)
Tom Rini [Tue, 27 Sep 2022 12:53:51 +0000 (08:53 -0400)]
Merge tag 'u-boot-stm32-20220927' of https://source.denx.de/u-boot/custodians/u-boot-stm into next
- Increase SYS_MALLOC_F_LEN for STM32 MCU's board
- SPL fixes for STM32F7 MCUs
- Device tree alignement with kernelv6.0-rc4 for MCU's board
- Device tree alignement with kernelv6.0-rc3 for MPU's board
- Update DDR node for STM32MP15
- Cleanup config file for STM32MP1
- Update for cmd_stm32key command
- Fix compatible string to add partitions for STM32MP1
- Update for stm32programmer tool
autoboot: make sure watchdog device(s) are handled with keyed autoboot
Currently, AUTOBOOT_KEYED and its variant AUTOBOOT_ENCRYPTION are
broken when one has an external always-running watchdog device with a
timeout shorter than the configured boot delay (in my case, I have a
gpio-wdt one with a timeout of 1 second), because we fail to call
WATCHDOG_RESET() in the loops where we wait for the bootdelay to
elapse.
This is done implicitly in the !AUTOBOOT_KEYED case,
i.e. abortboot_single_key(), because that loop contains a
udelay(10000), and udelay() does a WATCHDOG_RESET().
To fix this, simply add similar udelay() calls in the other loops.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Reviewed-by: Stefan Roese <sr@denx.de>
watchdog: gpio_wdt: use __udelay() to avoid recursion
The udelay() function in lib/time.c contains a WATCHDOG_RESET()
call. The only reason this doesn't lead to a catastrophic infinite
recursion is due to the rate-limiting in wdt-uclass.c:
if (time_after_eq(now, priv->next_reset)) {
priv->next_reset = now + priv->reset_period;
wdt_reset(dev);
}
But this would fall apart if ->next_reset was updated after calling the
device's reset method.
This is needlessly fragile, and it's easy enough to avoid that
recursion in the first place by just using __udelay() directly.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Reviewed-by: Stefan Roese <sr@denx.de>
configs: increase SYS_MALLOC_F_LEN for STM32 MCU's board
Some STM32 MCU's board need their SYS_MALLOC_F_LEN value enlarged
to avoid the "alloc space exhausted" error message during their boot
process.
Use the default SYS_MALLOC_F_LEN value which is set to 0x2000 in
Kconfig.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This is due to SYS_UBOOT_START flag set to 0x080083FD which is not correct.
If unset, SYS_UBOOT_START is set by default to CONFIG_SYS_TEXT_BASE
which match with our requirement.
arch-stm32f7/stm32.h file is shared between STM32F746 and STM32F769
MCUs. But STM32F769 embeds 2MB of internal flash instead of 1MB for
STM32F746. The flash layout is quite similar between the 2 SoCs :
STM32F746 embeds 1 MB of internal flash [0x08000000-0x080fffff],
fix CONFIG_SYS_SPL_ARGS_ADDR accordingly
It solves hard fault when jumping from SPL to U-Boot.
STM32F746 embeds 1 MB of internal flash [0x08000000-0x080fffff],
fix CONFIG_SYS_SPL_ARGS_ADDR accordingly
It solves hard fault when jumping from SPL to U-Boot.
Commit 'b4b9a00ed593 ("Convert CONFIG_SYS_SPL_ARGS_ADDR to Kconfig")'
replaces CONFIG_SYS_FDT_BASE by CONFIG_SYS_SPL_ARGS_ADDR.
As CONFIG_SYS_SPL_ARGS_ADDR enables additional code when enable, it
increases SPL size over the initial 0x8000 limit.
Increase the SPL size to 0x9000 to fix SPL boot.
Set SPL_SIZE_LIMIT to 0x9000 to avoid similar issue in the future.
Fixes 'b4b9a00ed593 ("Convert CONFIG_SYS_SPL_ARGS_ADDR to Kconfig")'
Commit 'b4b9a00ed593 ("Convert CONFIG_SYS_SPL_ARGS_ADDR to Kconfig")'
replaces CONFIG_SYS_FDT_BASE by CONFIG_SYS_SPL_ARGS_ADDR.
As CONFIG_SYS_SPL_ARGS_ADDR enables additional code when enable, it
increases SPL size over the initial 0x8000 limit.
Increase the SPL size to 0x9000 to fix SPL boot.
Set SPL_SIZE_LIMIT to 0x9000 to avoid similar issue in the future.
Fixes 'b4b9a00ed593 ("Convert CONFIG_SYS_SPL_ARGS_ADDR to Kconfig")'
Commit 'b4b9a00ed593 ("Convert CONFIG_SYS_SPL_ARGS_ADDR to Kconfig")'
replaces CONFIG_SYS_FDT_BASE by CONFIG_SYS_SPL_ARGS_ADDR.
As CONFIG_SYS_SPL_ARGS_ADDR enables additional code when enable, it
increases SPL size over the initial 0x8000 limit.
Increase the SPL size to 0x9000 to fix SPL boot.
Set SPL_SIZE_LIMIT to 0x9000 to avoid similar issue in the future.
Fixes 'b4b9a00ed593 ("Convert CONFIG_SYS_SPL_ARGS_ADDR to Kconfig")'
Michal Simek [Mon, 19 Sep 2022 12:21:10 +0000 (14:21 +0200)]
arm64: versal-net: Add support for mini configuration
Versal NET mini configuration is designed for running memory test. Current
output is on DCC but changing serial0 alias to pl011 will move console to
serial port.
Michal Simek [Mon, 19 Sep 2022 12:21:02 +0000 (14:21 +0200)]
arm64: versal-net: Add support for Versal NET platform
Versal NET platform is based on Versal chip which is reusing a lot of IPs.
For more information about new IPs please take a look at DT which describe
currently supported devices.
The patch is adding architecture and board support with soc detection
algorithm. Generic setting should be very similar to Versal but it will
likely diverge in longer run.
Currently all GPIOs supported by CMD_EXT_CONTROL/CMD_GET_EXT_CONTROL_STATUS
commands (last 16 GPIOs) are available only when FEAT_PERIPH_MCU feature
bit is set. So do not register these GPIOs by U-Boot driver when this
feature bit is not set, so U-Boot 'gpio' command would see only GPIOs which
really exists.
Fixes: 5e4d24ccc115 ("gpio: Add Turris Omnia MCU driver") Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Stefan Roese <sr@denx.de>
Rick Chen [Wed, 21 Sep 2022 06:34:54 +0000 (14:34 +0800)]
riscv: Introduce AVAILABLE_HARTS
In SMP all harts will register themself in available_hart
during start up. Then main hart will send IPI to other harts
according to this variables. But this mechanism may not
guarantee that all other harts can jump to next stage.
When main hart is sending IPI to other hart according to
available_harts, but other harts maybe still not finish the
registration. Then the SMP booting will miss some harts finally.
So let it become an option and it will be enabled by default.
Please refer to the discussion:
https://www.mail-archive.com/u-boot@lists.denx.de/msg449997.html
Signed-off-by: Rick Chen <rick@andestech.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
When processing USB_REQ_CLEAR_FEATURE, USB_REQ_SET_FEATURE, and
USB_REQ_GET_STATUS packets in dwc2_ep0_setup an out of bounds access
can occur. This is caused by the wIndex field of the usb control packet
being used as an index into an array whose size is DWC2_MAX_ENDPOINTS (4).
projects / u-boot.git / log
