Tom Rini [Thu, 10 Mar 2022 13:28:40 +0000 (08:28 -0500)]
Merge branch '2022-03-09-events-subsystem' into next
To quote the author:
It is a common need in U-Boot to have one subsystem notify another
when something happens. An example is reading a partition table when a
new block device is set up.
It is also common to add weak functions and 'hook' functions to modify
how U-Boot works. See for example ft_board_setup() and the like.
U-Boot would benefit from a generic mechanism to handle these cases,
with the ability to hook into various 'events' in a
subsystem-independent and transparent way.
This series provides a way to create and dispatch events, with a way of
registering a 'spy' which watches for events of different types. This
allows 'hook' functions to be created in a generic way.
It also includes a script to list the hooks in an image, which is a bit
easier to debug than weak functions, as well as an 'event' command to
do the same from within U-Boot.
These 'static' events can be used to replace hooks like misc_init_f(),
for example. Also included is basic support for 'dynamic' events, where
a spy can be registered at runtime. The need for this is still being
figured out.
Simon Glass [Fri, 4 Mar 2022 15:43:07 +0000 (08:43 -0700)]
event: Add a script to decode the event-spy list
For debugging and dicoverability it is useful to be able to see a list of
each event spy in a U-Boot ELF file. Add a script which shows this, along
with the event type and the source location. This makes events a little
easier to use than weak functions, for example.
Add a basic sandbox test as well. We could provide a test for other
boards, but for now, few use events.
Simon Glass [Fri, 4 Mar 2022 15:43:04 +0000 (08:43 -0700)]
event: Convert misc_init_f() to use events
This hook can be implmented using events, for the three boards that
actually use it.
Add the event type and event handlers. Drop CONFIG_MISC_INIT_F since we
can just use CONFIG_EVENT to control this. Since sandbox always enables
CONFIG_EVENT, we can drop the defconfig lines there too.
Simon Glass [Fri, 4 Mar 2022 15:43:00 +0000 (08:43 -0700)]
event: Add basic support for events
Add a way to create and dispatch events without needing to allocate
memory. Also add a way to 'spy' on events, thus allowing 'hooks' to be
created.
Use a linker list for static events, which we can use to replace functions
like arch_cpu_init_f(). Allow an EVENT_DEBUG option which makes it
easier to see what is going on at runtime, but uses more code space.
Dynamic events allow the creation of a spy at runtime. This is not always
necessary, but can be enabled with EVENT_DYNAMIC if needed.
Simon Glass [Fri, 4 Mar 2022 15:42:59 +0000 (08:42 -0700)]
binman: Expand elf support a little
Allow finding a symbol by its address. Also export the function to get
the file offset of a particular address, so it can be used by a script to
be added.
Andrew Jeffery [Tue, 15 Feb 2022 23:56:56 +0000 (10:26 +1030)]
gpio: Add Aspeed GPIO driver
The Aspeed GPIO driver supports the GPIO controllers found in the
AST2400, AST2500 and AST2600 BMC SoCs. The implementation is a cut-down
copy of the upstream Linux kernel driver, adapted for u-boot.
Tom Rini [Fri, 25 Feb 2022 16:19:51 +0000 (11:19 -0500)]
net: Remove CONFIG_BOOTP_DHCP_REQUEST_DELAY
This option is not in use anywhere and the documentation implies it's
for some very old and unlikely to be seen currently issues. Rather than
update the code so the CONFIG symbol could be easily in Kconfig, remove
the code.
Cc: Ramon Fried <rfried.dev@gmail.com> Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: Ramon Fried <rfried.dev@gmail.com>
Tom Rini [Fri, 25 Feb 2022 16:19:50 +0000 (11:19 -0500)]
Convert CONFIG_BOOTP_MAY_FAIL et al to Kconfig
This converts the following to Kconfig:
CONFIG_BOOTP_MAY_FAIL
CONFIG_BOOTP_VENDOREX
CONFIG_BOOTP_BOOTFILESIZE
CONFIG_BOOTP_NISDOMAIN
CONFIG_BOOTP_TIMEOFFSET
Cc: Ramon Fried <rfried.dev@gmail.com> Signed-off-by: Tom Rini <trini@konsulko.com>
Tom Rini [Wed, 23 Feb 2022 17:28:16 +0000 (12:28 -0500)]
arm: exynos: Move BL1/2 SPI flash defines to their user, drop CONFIG
These particular values are not configurable and today we always set
CONFIG_SECURE_BL1_ONLY. Move these to where they're used in the code,
and drop from the CONFIG namespace.
Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Minkyu Kang <mk7.kang@samsung.com>
Tom Rini [Wed, 23 Feb 2022 17:28:14 +0000 (12:28 -0500)]
powerpc: Remove unused MPC8540/60ADS code
Remove some code, primarily CPM2 related, that is now unused since the
removal of MPC8540/60ADS.
Fixes 0742457416d1 ("powerpc: mpc8540ads: mpc8560ads: Drop support for MPC8540/60ADS") Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Etienne Carriere [Mon, 21 Feb 2022 08:22:42 +0000 (09:22 +0100)]
clk: scmi: register scmi clocks with CCF
Implements SCMI APIs to retrieve the number exposed SCMI clocks using
SCMI_PROTOCOL_ATTRIBUTES messages and the names of the clocks using
SCMI_CLOCK_ATTRIBUTES messages.
This change updates sandbox SCMI clock test driver to manage these
2 new message IDs.
Cc: Lukasz Majewski <lukma@denx.de> Cc: Sean Anderson <seanga2@gmail.com> Cc: Clement Leger <clement.leger@bootlin.com> Cc: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Etienne Carriere [Mon, 21 Feb 2022 08:22:41 +0000 (09:22 +0100)]
firmware: scmi: fix sandbox and related tests for clock discovery
Updates sandbox SCMI clock driver and tests since enabling CCF will
mandate clock discovery that is all exposed SCMI clocks shall be
discovered at initialization. For this reason, sandbox SCMI clock
driver must emulate all clocks exposed by SCMI server, not only those
effectively consumed by some other U-Boot devices.
Therefore the sandbox SCMI test driver exposes 3 clocks (IDs 0, 1 and 2)
and sandbox SCMI clock consumer driver gets 2 of them.
Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Etienne Carriere [Mon, 21 Feb 2022 08:22:40 +0000 (09:22 +0100)]
scmi: change parameter dev in devm_scmi_process_msg
Changes devm_scmi_process_msg() first argument from target parent device
to current SCMI device and lookup the SCMI agent device among SCMI device
parents for find the SCMI agent operator needed for communication with
the firmware.
This change is needed in order to support CCF in clk_scmi driver unless
what CCF will fail to find the right udevice related to exposed SCMI
clocks.
This patch allows to simplify the caller sequence, using SCMI device
reference as parameter instead of knowing SCMI uclass topology. This
change also adds some protection in case devm_scmi_process_msg() API
function is called for an invalid device type.
Cc: Lukasz Majewski <lukma@denx.de> Cc: Sean Anderson <seanga2@gmail.com> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Etienne Carriere [Mon, 21 Feb 2022 08:22:39 +0000 (09:22 +0100)]
sandbox: scmi: test against a single scmi agent
As per DT bindings since Linux kernel v5.14, the device tree can define
only 1 SCMI agent node that is named scmi [1]. As a consequence, change
implementation of the SCMI driver test through sandbox architecture to
reflect that.
This change updates sandbox test DT and sandbox SCMI driver accordingly
since all these are impacted.
Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Tom Rini [Wed, 2 Mar 2022 18:59:33 +0000 (13:59 -0500)]
Merge branch '2022-03-02-armv8-fixes-and-cleanups' into next
To quote the author:
I was looking into the arm64 boot code lately and stumbled upon some
issues. Also Nishanth brought back memories of a lengthy debug session,
which was caused due to U-Boot keeping SErrors masked. As the resulting
patches are all somewhat related, I gathered this series here to address
those problems.
Patches 1 to 3 address exception handling issues, with the SError
enablement being the most prominent fix here.
Patch 4 cleans up asm/io.h. This was on the list before[1], but was
somehow lost when it was intercepted by a shorter version of itself.
Patches 5 and 6 clean up some unnecessarily complicated AArch64 assembly
code.
Andre Przywara [Fri, 11 Feb 2022 11:29:39 +0000 (11:29 +0000)]
armv8: Fix and simplify branch_if_master/branch_if_slave
The branch_if_master macro jumps to a label if the CPU is the "master"
core, which we define as having all affinity levels set to 0. To check
for this condition, we need to mask off some bits from the MPIDR
register, then compare the remaining register value against zero.
The implementation of this was slighly broken (it preserved the upper
RES0 bits), overly complicated and hard to understand, especially since
it lacked comments. The same was true for the very similar
branch_if_slave macro.
Use a much shorter assembly sequence for those checks, use the same
masking for both macros (just negate the final branch), and put some
comments on them, to make it clear what the code does.
This allows to drop the second temporary register for branch_if_master,
so we adjust all call sites as well.
Also use the opportunity to remove a misleading comment: the macro
works fine on SoCs with multiple clusters. Judging by the commit
message, the original problem with the Juno SoC stems from the fact that
the master CPU *can* be configured to be from cluster 1, so the
assumption that the master CPU has all affinity values set to 0 does not
hold there. But this is already mentioned above in a comment, so remove
the extra comment.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Andre Przywara [Fri, 11 Feb 2022 11:29:38 +0000 (11:29 +0000)]
armv8: Simplify switch_el macro
The switch_el macro is a neat contraption to handle cases where we need
different code depending on the current exception level, but its
implementation was longer than needed.
Simplify it by doing just one comparison, then using the different
condition codes to branch to the desired target. PState.CurrentEL just
holds two bits, and since we don't care about EL0, we can use >, =, < to
select EL3, EL2 and EL1, respectively.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Andre Przywara [Fri, 11 Feb 2022 11:29:37 +0000 (11:29 +0000)]
arm: Clean up asm/io.h
asm/io.h is the header file containing the central MMIO accessor macros.
Judging by the header and the comments, it was apparently once copied
from the Linux kernel, but has deviated since then *heavily*. There is
absolutely no point in staying close to the original Linux code anymore,
so just remove the old cruft, by:
- removing pointless Linux history
- removing commented code
- removing outdated comments
- removing unused definitions (for mem_isa)
This massively improves the readability of the file.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Andre Przywara [Fri, 11 Feb 2022 11:29:36 +0000 (11:29 +0000)]
armv8: Force SP_ELx stack pointer usage
In ARMv8 we have the choice between two stack pointers to use: SP_EL0 or
SP_ELx, which is banked per exception level. This choice is stored in
the SP field of PState, and can be read and set via the SPSel special
register. When the CPU takes an exception, it automatically switches to
the SP_ELx stack pointer.
Trusted Firmware enters U-Boot typically with SPSel set to 1, so we use
SP_ELx all along as our sole stack pointer, both for normal operation and
for exceptions.
But if we now for some reason enter U-Boot with SPSel cleared, we will
setup and use SP_EL0, which is fine, but leaves SP_ELx uninitialised.
When we now take an exception, we try to save the GPRs to some undefined
location, which will usually end badly.
To make sure we always have SP_ELx pointing to some memory, set SPSel
to 1 in the early boot code, to ensure safe operation at all times.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Andre Przywara [Fri, 11 Feb 2022 11:29:35 +0000 (11:29 +0000)]
armv8: Always unmask SErrors
The ARMv8 architecture describes the "SError interrupt" as the fourth
kind of exception, next to synchronous exceptions, IRQs, and FIQs.
Those SErrors signal exceptional conditions from which the system might
not easily recover, and are normally generated by the interconnect as a
response to some bus error. A typical situation is access to a
non-existing memory address or device, but it might be deliberately
triggered by a device as well.
The SError interrupt replaces the Armv7 asynchronous abort.
Trusted Firmware enters U-Boot (BL33) typically with SErrors masked,
and we never enable them. However any SError condition still triggers
the SError interrupt, and this condition stays pending, it just won't be
handled. If now later on the Linux kernel unmasks the "A" bit in PState,
it will immediately take the exception, leading to a kernel crash.
This leaves many people scratching their head about the reason for
this, and leads to long debug sessions, possibly looking at the wrong
places (the kernel, but not U-Boot).
To avoid the situation, just unmask SErrors early in the ARMv8 boot
process, so that the U-Boot exception handlers reports them in a timely
manner. As SErrors are typically asynchronous, the register dump does
not need to point at the actual culprit, but it should happen very
shortly after the condition.
For those exceptions to be taken, we also need to route them to EL2,
if U-Boot is running in this exception level.
This removes the respective code snippet from the Freescale lowlevel
routine, as this is now handled in generic ARMv8 code.
Reported-by: Nishanth Menon <nm@ti.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Andre Przywara [Fri, 11 Feb 2022 11:29:34 +0000 (11:29 +0000)]
cmd: exception: arm64: fix undefined, add faults
The arm64 version of the exception command was just defining the
undefined exception, but actually copied the AArch32 instruction.
Replace that with an encoding that is guaranteed to be and stay
undefined. Also add instructions to trigger unaligned access faults and
a breakpoint.
This brings ARM64 on par with ARM(32) for the exception command.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Simon Glass [Fri, 11 Feb 2022 20:23:25 +0000 (13:23 -0700)]
buildman: Update default config to build for sandbox
At present the default .buildman file written by buildman does not specify
a default toolchain. Add an 'other' line so this works correctly and
sandbox builds run as expected.
Simon Glass [Fri, 11 Feb 2022 20:23:21 +0000 (13:23 -0700)]
binman: Correct pylint errors
Fix pylint errors that can be fixed and mask those that seem to be
incorrect.
A complication with binman is that it tries to avoid importing libfdt
(or anything that imports it) unless needed, so that things like help
still work if it is missing.
Note that two tests are duplicated in binman and two others have
duplicate names, so both of these issues are fixed also.
Linus Walleij [Sun, 20 Feb 2022 22:47:01 +0000 (23:47 +0100)]
board: stemmy: Detect board variants and patch DTB
This patch scans the cmdline from the Samsung SBL (second stage
bootloader) and stores the parameters board_id=N and lcdtype=N
in order to augment the DTB for different board and LCD types.
We then add a custom ft_board_setup() callback that will inspect
the DTB and patch it using the stored LCD type. At this point
we know which product we are dealing with, so using the passed
board_id we can also print the board variant for diagnostics.
We patch the Codina, Skomer and Kyle DTBs to use the right
LCD type as passed in lcdtype from the SBL.
This also creates an infrastructure for handling any other
Samsung U8500 board variants that may need a slightly augmented
DTB.
Janne Grunau [Sat, 19 Feb 2022 13:05:19 +0000 (14:05 +0100)]
arm: apple: Switch to fully dynamic mem layout
Support for Apple M1 Pro and Max will allow using a single binary for
all M1 SoCs. The M1 Pro/Max have a different memory layout. The RAM
start address is 0x100_0000_0000 instead of 0x8_0000_0000.
Replace the hardcoded memory layout with dynamic initialized
environment variables in board_late_init().
Tested on Mac Mini (2020) and Macbook Pro 14-inch (2021).
Signed-off-by: Janne Grunau <j@jannau.net> Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Felix Brack [Mon, 21 Feb 2022 13:26:05 +0000 (14:26 +0100)]
arm: pdu001: Setup pinmux for console UART as early as possible
To make sure we get a working console as soon as possible in the SPL the
UART pins require to be configured earlier. This is especially
true for the pins of UART3, since the PDU001 board uses this UART for
the console by default.
Felix Brack [Tue, 15 Feb 2022 14:27:23 +0000 (15:27 +0100)]
arm: pdu001: Fix early debugging UART
The changes from commit f4d0c01c88e5 ("arm: Init the debug UART")
prevent the early debug UART from being initialized correctly.
To fix this we not just configure the pin multiplexer but add setting up
early clocks.
Signed-off-by: Felix Brack <fb@ltec.ch> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Pali Rohár [Sun, 13 Feb 2022 00:09:46 +0000 (01:09 +0100)]
tools: mkimage/dumpimage: Allow to use -l with -T
Currently -l option for mkimage and dumpimage ignores option -T and always
tries to autodetect image type.
With this change it is possible to tell mkimage and dumpimage to parse
image file as specific type (and not random autodetected type). This allows
to use mkimage -l or dumpimage -l as tool for validating image.
params.type for -l option is now by default initialized to zero
(IH_TYPE_INVALID) instead of IH_TYPE_KERNEL. imagetool_get_type() for
IH_TYPE_INVALID returns NULL, which is assigned to tparams. mkimage and
dumpimage code is extended to handle tparams with NULL for -l option. And
imagetool_verify_print_header() is extended to do validation via tparams if
is not NULL.
Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Masahisa Kojima [Tue, 22 Feb 2022 00:58:30 +0000 (09:58 +0900)]
efi_loader: update the timing of enabling and disabling EFI watchdog
UEFI specification requires that 5 minutes watchdog timer is
armed before the firmware's boot manager invokes an EFI boot option.
This watchdog timer is updated as follows, according to the
UEFI specification.
1) The EFI Image may reset or disable the watchdog timer as needed.
2) If control is returned to the firmware's boot manager,
the watchdog timer must be disabled.
3) On successful completion of EFI_BOOT_SERVICES.ExitBootServices()
the watchdog timer is disabled.
1) is up to the EFI image, and 3) is already implemented in U-Boot.
This patch implements 2), the watchdog is disabled when control is
returned to U-Boot.
In addition, current implementation arms the EFI watchdog at only
the first "bootefi" invocation. The EFI watchdog must be armed
in every EFI boot option invocation.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org> Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Masami Hiramatsu [Wed, 16 Feb 2022 06:16:12 +0000 (15:16 +0900)]
efi_loader: test/py: Reset system after capsule update on disk
Add a cold reset soon after processing capsule update on disk.
This is required in UEFI specification 2.9 Section 8.5.5
"Delivery of Capsules via file on Mass Storage device" as;
In all cases that a capsule is identified for processing the system is
restarted after capsule processing is completed.
This also reports the result of each capsule update so that the user can
notice that the capsule update has been succeeded or not from console log.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu@linaro.org> Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Masami Hiramatsu [Wed, 16 Feb 2022 06:16:02 +0000 (15:16 +0900)]
test/py: Handle expected reboot while booting sandbox
Add expected_reset optional argument to ConsoleBase::ensure_spawned(),
ConsoleBase::restart_uboot() and ConsoleSandbox::restart_uboot_with_flags()
so that it can handle a reset while the 1st boot process after main
boot logo before prompt correctly.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu@linaro.org> Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Masami Hiramatsu [Wed, 16 Feb 2022 06:15:42 +0000 (15:15 +0900)]
efi_loader: use efi_update_capsule_firmware() for capsule on disk
Since the efi_update_capsule() represents the UpdateCapsule() runtime
service, it has to handle the capsule flags and update ESRT. However
the capsule-on-disk doesn't need to care about such things.
Thus, the capsule-on-disk should use the efi_capsule_update_firmware()
directly instead of calling efi_update_capsule().
This means the roles of the efi_update_capsule() and capsule-on-disk
are different. We have to keep the efi_update_capsule() for providing
runtime service API at boot time.
Ilias Apalodimas [Mon, 14 Feb 2022 09:14:22 +0000 (11:14 +0200)]
efi_loader: fix uefi secure boot with intermediate certs
The general rule of accepting or rejecting an image is
1. Is the sha256 of the image in dbx
2. Is the image signed with a certificate that's found in db and
not in dbx
3. The image carries a cert which is signed by a cert in db (and
not in dbx) and the image can be verified against the former
4. Is the sha256 of the image in db
For example SHIM is signed by "CN=Microsoft Windows UEFI Driver Publisher",
which is issued by "CN=Microsoft Corporation UEFI CA 2011", which in it's
turn is issued by "CN=Microsoft Corporation Third Party Marketplace Root".
The latter is a self-signed CA certificate and with our current implementation
allows shim to execute if we insert it in db.
However it's the CA cert in the middle of the chain which usually ends up
in the system's db. pkcs7_verify_one() might or might not return the root
certificate for a given chain. But when verifying executables in UEFI, the
trust anchor can be in the middle of the chain, as long as that certificate
is present in db. Currently we only allow this check on self-signed
certificates, so let's remove that check and allow all certs to try a
match an entry in db.
Open questions:
- Does this break any aspect of variable authentication since
efi_signature_verify() is used on those as well?
The wrong phy was being enabled, because it worked and the proper
PHY did not. After the Renesas maintainer made some adjustments
to the device tree, Linux was able to use the proper driver, and
when that device tree was ported to Linux, the ethernet stopped
working due to the lack of rgmii-rxid support. Now that
rgmii-rxid is supported, enable the proper driver to restore
ethernet function.
Fixes: 554d24f11eb5 ("arm: dts: beacon-rzg2: Resync device trees with Linux 5.16-rc3") Signed-off-by: Adam Ford <aford173@gmail.com>
Adam Ford [Fri, 25 Feb 2022 20:32:52 +0000 (14:32 -0600)]
net: ravb: Add tx/rx delay flag checks and support for rgmii-rxid
Some boards like the Beacon RZ/G2 SOM use either flags for
tx-internal-delay-ps, rx-internal-delay-ps or rgmii-rxid.
In Linux the APSR_RDM flag is set when either rx-internal-delay-ps
is set or the mode is rgmii-rxid, and the APSR_TDM is set when
tx-internal-delay-ps is found or rgmii-txid is set, and both
are set if rgmii-id is set.
The ravb driver in U-Boot driver was missing rgmii-rxid support,
so add that support in a similar fashion to what is done in Linux.
Philippe Reynes [Tue, 22 Feb 2022 13:54:39 +0000 (14:54 +0100)]
scripts: Makefile.lib: generate dsdt_generated.c instead of dsdt.c
There is a conflict between the static file
lib/acpi/dsdt.c and the file dsdt.c generated
dynamicaly by scripts/Makefile.lib. When a
mrproper is done, the static file dsdt.c is
removed. If a build with acpi enabled is
launched after, the following error is raised:
CC lib/acpi/acpi_table.o
make[2]: *** No rule to make target 'lib/acpi/dsdt.asl', needed by 'lib/acpi/dsdt.c'. Stop.
scripts/Makefile.build:394: recipe for target 'lib/acpi' failed
To avoid such error, the generated file is named
dsdt_generated.c instead of dstdt.c.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com> Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Patrick Delaunay [Mon, 31 Jan 2022 16:21:38 +0000 (17:21 +0100)]
cmd: clk: replace clk_lookup by uclass_get_device_by_name
The function clk_lookup can be replaced by a direct call
to uclass_get_device_by_name for UCLASS_CLK.
This patch removes duplicated codes by the generic DM API and avoids
issue in clk_lookup because result of uclass_get_device wasn't tested;
when ret < 0, dev = NULL and dev->name is invalid, the next function
call strcmp(name, dev->name) causes a crash.
Patrick Delaunay [Mon, 24 Jan 2022 13:17:14 +0000 (14:17 +0100)]
clk: ccf: correct the test on the parent uclass in clk_enable/clk_disable
It is safe to check if the uclass id on the device is UCLASS_CLK
before to call the clk_ functions, but today this comparison is
not done on the device used in API: clkp->dev->parent
but on the device himself: clkp->dev.
This patch corrects this behavior and tests if the parent device
is a clock device before to call the clock API, clk_enable or
clk_disable, on this device.
Fixes: 885bbfa08df6 ("clk: prograte clk enable/disable to parent") Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Sean Anderson <seanga2@gmail.com>
Sean Anderson [Sat, 15 Jan 2022 20:52:47 +0000 (15:52 -0500)]
clk: Add clk_get_by_name_optional
This adds a helper function for clk_get_by_name in cases where the clock is
optional. Hopefully this helps point driver writers in the right direction.
Also convert some existing users.
Sean Anderson [Wed, 22 Dec 2021 17:11:13 +0000 (12:11 -0500)]
clk: Add driver API to HTML docs
This converts the existing driver API docs (clk-uclass.h) to kernel doc
format and adds them to the HTML documentation. Because the kernel doc
sphinx converter does not handle functions in structs very well, the
individual methods are documented separately. This is primarily inspired by
the phylink documentation [1], which uses this trick extensively.
Sean Anderson [Wed, 22 Dec 2021 17:11:12 +0000 (12:11 -0500)]
clk: Add client API to HTML docs
This converts the existing client (aka clk.h) documentation to kernel doc
format, and adds it to the HTML docs. I have tried to preserve existing
comments as much as possible, refraining from semantic changes.
Signed-off-by: Sean Anderson <seanga2@gmail.com> Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20211222171114.3091780-4-seanga2@gmail.com
[rebased onto u-boot/master and resolved conflicts] Signed-off-by: Sean Anderson <seanga2@gmail.com>
Sean Anderson [Wed, 22 Dec 2021 17:11:11 +0000 (12:11 -0500)]
clk: Inline clk_get_*_optional
The optional varients of clk_get_* functions are just simple wrappers.
Reduce code size a bit by inlining them. On platforms where it is not used
(most of them), it will not be compiled in any more. On platforms where
they are used, the inlined branch should not cause any significant growth.
projects / uboot.git / log