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When `gd` is relocated during `spl_relocate_stack_gd()` the
doubly-linked circular list in the `log_head` member is broken.
The last element of the list should point back to the initial
`list_head`, but as the initial `list_head` is moved the pointer becomes
stale. As a result the loop in `log_dispatch` would never finish.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
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This feature is different enough from bootstd that it probably deserves
its own log category. It cannot use a uclass since it is not a device.
Add a new category.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Sometimes it is useful to log things related to filesystems. Add a new
category and place it at the top of one of the FAT files.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add some advice on string size here.
Signed-off-by: Simon Glass <sjg@chromium.org>
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These functions are not needed anymore since we now have logic which can
output to the console if logging is disabled. Drop the declarations.
Signed-off-by: Simon Glass <sjg@chromium.org>
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When CONFIG_LOG is activated, if LOG_DEBUG is defined in a file and
DEBUG is not defined the trace with debug() macro are not displayed,
because the parameter cond : _DEBUG = 0 is checked in debug_cond().
With this patch the define DEBUG, used to force the trace generated by
debug() macro, is linked with the define LOG_DEBUG, used to force the
trace generated by other macros (log_debug, dev_dbg, pr_debug).
We only need to define LOG_DEBUG in a file to activate all the
traces generated by any U-Boot debug macro, as it is described in
/doc/develop/logging.rst
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
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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.
A 'test' event is the only option for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
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At present if logging not enabled, log_info() becomes a nop. But we want
log output at the 'info' level to be akin to printf(). Update the macro to
pass the output straight to printf() in this case.
This mimics the behaviour for the log_...() macros like log_debug() and
log_info(), so we can drop the special case for these.
Add new tests to cover this case.
Signed-off-by: Simon Glass <sjg@chromium.org>
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The print_buffer() function is very useful for debugging. Add a version
of this in the log system also.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present debug() statements can cause debuf output to appear when LOG is
enabled but DEBUG is not. This is not intended and it seems that the
condition is wrong.
Fix it.
Signed-off-by: Simon Glass <sjg@chromium.org>
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The existing log_ret() and log_msg_ret() macros consider an error to be
less than zero. But some function may return a positive number to indicate
a different kind of failure. Add macros to check for that also.
Signed-off-by: Simon Glass <sjg@chromium.org>
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When multiple log() calls are used which don't end in newline, the
log prefix is prepended multiple times in the same line. This makes the
output look strange.
Fix this by detecting when the previous log record did not end in newline.
In that case, setting a flag.
Drop the unused BUFFSIZE in the test while we are here.
As an example implementation, update log_console to check the flag and
produce the expected output.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present only a single flag (force_debug) is used in log records. Before
adding more, convert this into a bitfield, so more can be added without
using more space.
To avoid expanding the log_record struct itself (which some drivers may
wish to store in memory) reduce the line-number field to 16 bits. This
provides for up to 64K lines which should be enough for anyone.
Signed-off-by: Simon Glass <sjg@chromium.org>
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With commit d094a0734cee ("log: allow for message continuation") we have
defined a special log level and category for message continuation. Let's
have a macro for using these.
If logging is enabled log_cont() will create a continuation log output with
the same logging level and category as the previous message.
If logging is not enabled, log_cont() will print like printf().
Provide macros for logging levels LOG_EMERG, LOG_ALERT, LOG_CRIT.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Change debug_cond() such that it can be used instead of a function like
debug().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Correct several typos.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This comment is in the wrong format, so reports an error with
'make htmldocs'. Fix it.
Fixes: b73d61a5565 ("x86: zimage: Add a little more logging")
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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Add logging for each part of the boot process, using a new
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
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The functions in log.h are already mostly documented, so add them to the
generated documentation.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This allows users to query which categories and drivers are available on
their system. This allows them to construct filter-add commands without
(e.g.) adjusting the log format to show categories and drivers.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This is the complement of the existing behavior to match only messages with
a log level less than a threshold. This is primarily useful in conjunction
with LOGFF_DENY.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Without this flag, log filters can only explicitly accept messages.
Allowing denial makes it easier to filter certain subsystems. Unlike
allow-ing filters, deny-ing filters are added to the beginning of the
filter list. This should do the Right Thing most of the time, but it's
less-universal than allowing filters to be inserted anywhere. If this
becomes a problem, then perhaps log_filter_add* should take a filter number
to insert before/after.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This function exposes a way to specify flags when creating a filter.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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These functions are required by "cmd: log: Add commands to manipulate
filters" and "test: Add a test for log filter-*".
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Logging category lists are terminated by LOGC_END, not LOGC_NONE.
Fixes: e9c8d49d54 ("log: Add an implementation of logging")
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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Some drivers use macro pr_cont() for continuing a message sent via printk.
Hence if we want to convert printk messaging to using the logging system,
we must support continuation of log messages too.
As pr_cont() does not provide a message level we need a means of
remembering the last log level.
With the patch a pseudo log level LOGL_CONT as well as a pseudo log
category LOGC_CONT are introduced. Using these results in the application
of the same log level and category as in the previous log message.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Add some category names that were missed in recent changes. Update the
comment as a reminder.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present all log devices are enabled by default. Add a function to allow
devices to be disabled or enabled at runtime.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present there is no way to disable a log driver. But the syslog driver
causes (attempted) network traffic in sandbox every time a log message
is printed, which is often.
Add a flag to enable a log driver. Adjust struct log_device to use a short
for next_filter_num so that no more memory is used for devices. Also fix
a missing line in the struct log_driver comment while here.
To maintain compatibility, enable it for all drivers for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present if CONFIG_LOG enabled, putting LOG_DEBUG at the top of a file
(before log.h inclusion) causes _log() to be executed for every log()
call, regardless of the build- or run-time logging level.
However there is no guarantee that the log record will actually be
displayed. If the current log level is lower than LOGL_DEBUG then it will
not be.
Add a way to signal that the log record should always be displayed and
update log_passes_filters() to handle this.
With the new behaviour, log_debug() will always log if LOG_DEBUG is
enabled.
Move log_test_syslog_nodebug() into its own file since it cannot be made
to work where it is, with LOG_DEBUG defined.
Signed-off-by: Simon Glass <sjg@chromium.org>
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The name of the function emitting a log message may be of interest for a
developer but is distracting for normal users. See the example below:
try_load_entry() Booting: Debian
Make the default format for log messages customizable. By default show
only the message text.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.
Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.
This requires quite a few header-file additions.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Move this header out of the common header. Network support is used in
quite a few places but it still does not warrant blanket inclusion.
Note that this net.h header itself has quite a lot in it. It could be
split into the driver-mode support, functions, structures, checksumming,
etc.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Functions for reading indexed values from device tree
Enhancements to 'dm' command
Log test enhancements and syslog driver
DM change to read parent ofdata before children
Minor fixes
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If CONFIG_LOG=n, we should still output errors, warnings, notices, infos,
and for DEBUG=1 also debug messages.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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ACPI (Advanced Configuration and Power Interface) is a standard for
specifying information about a platform. It is a little like device
tree but the bindings are part of the specification and it supports an
interpreted bytecode language.
Driver model does not use ACPI for U-Boot's configuration, but it is
convenient to have it support generation of ACPI tables for passing to
Linux, etc.
As a starting point, add an optional set of ACPI operations to each
device. Initially only a single operation is available, to obtain the
ACPI name for the device. More operations are added later.
Enable ACPI for sandbox to ensure build coverage and so that we can add
tests.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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log.h references cmd_tbl_t but command.h was not included
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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At present when CONFIG_DEBUG_DEVRES is enabled, U-Boot prints log messages
to the console with every devres allocation/free event. This causes most
tests to fail since the console output is not as expected.
In particular this prevents us from adding a device to sandbox which uses
devres in its bind method.
Move devres over to use U-Boot's logging feature instead, and add a new
category for devres.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Some U-Boot code uses BUG_ON() and WARN_ON() macros. These use __FILE__
which can include quite a large path, depending on how U-Boot is built.
The existing assert() is only checked if DEBUG is enabled. Add a new one
which is always checked, and prints a (smaller) error in that case.
Signed-off-by: Simon Glass <sjg@chromium.org>
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If a log statement includes a variable and logging is disabled, this can
generate warnings about unused variables. Add a bit more complexity to the
macros to avoid this for the common case.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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Provide a concise description of the assert() macro. Point out that the
tested expression is always executed, irrespective of the value of _DEBUG.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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At present it is possible to '#define DEBUG' at the top of a file which
causes all debug() statements in that file to become active. There is
currently no equivalent with logging, but this is a useful function.
Add a LOG_DEBUG define along with documentation.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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The log level numbers in the Kconfig are not actually correct. Fix them
and also add a missing space in the header-file comment.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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At present logging does not check printf() arguments. Now that all users
have been corrected, enable this to prevent further problems.
Signed-off-by: Simon Glass <sjg@chromium.org>
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It is sometimes useful to see what memory is being allocated early during
boot. Add logging to support this, using a new LOGC_ALLOC category.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present there is no standard way in U-Boot to pass information from SPL
to U-Boot proper. But sometimes SPL wants to convey information to U-Boot
that U-Boot cannot easily figure out. For example, if SPL sets up SDRAM
then it might want to pass the size of SDRAM, or the location of each
bank, to U-Boot proper.
Add a new 'bloblist' feature which provides this. A bloblist is set up in
the first phase of U-Boot that runs (i.e. TPL or SPL). The location of
this info may be in SRAM or CAR (x86 cache-as-RAM) or somewhere else.
Information placed in this region is preserved (with a checksum) through
TPL and SPL and ends up in U-Boot. At this point it is copied into SDRAM
so it can be used after relocation.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Andreas Dannenberg <dannenberg@ti.com>
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It is sometimes useful to log information in SPL and TPL. Add support for
this.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
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It seems useful to make sandbox its own log category since it is used for
so much testing. Add this as a new category.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present some of the log categories are missing comments. Add them.
Signed-off-by: Simon Glass <sjg@chromium.org>
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