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path: root/include/log.h
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2018-02-03log: add category LOGC_EFIHeinrich Schuchardt
The EFI implementation does not fit into any of the existing categories. Provide LOGC_EFI so that EFI related message can be filtered. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-02-03log: Add a way to log error-return valuesSimon Glass
When functions return an error it propagates up the stack to the point where it is reported. Often the error code provides enough information about the root cause of the error that this is obvious what went wrong. However in some cases the error may be hard to trace. For example if a driver uses several devices to perform an operation, it may not be obvious which one failed. Add a log_ret() macro to help with this. This can be used to wrap any error-return value. The logging system will then output a log record when the original error is generated, making it easy to trace the call stack of the error. This macro can significantly impact code size, so its use is controlled by a Kconfig option, which is enabled for sandbox. Signed-off-by: Simon Glass <sjg@chromium.org>
2018-02-03log: Add control over log formattingSimon Glass
It is useful to be able to control the output format of log records on the console. As a starting point, add definitions for controlling which elements of the log record are displayed. Use function and message as the default, since these are the most useful fields. Signed-off-by: Simon Glass <sjg@chromium.org>
2018-02-03log: Add functions to convert IDs to/from namesSimon Glass
Category and level both use an enum for their ID values. Add functions to convert these IDs to strings and vice versa. This will allow the log to output the strings instead of the (inscrutable) values. At the same time, add a new 'driver-model' category, to cover core driver-model functions and fix an incorrect value for LOGL_MAX. Tests will be added with the new 'log' subcommands. Signed-off-by: Simon Glass <sjg@chromium.org> (Updated to correct clang warnings)
2017-12-07log: Add a test commandSimon Glass
Add a command which exercises the logging system. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-12-07log: Add an implementation of loggingSimon Glass
Add the logging header file and implementation with some configuration options to control it. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-12-07Move debug and logging support to a separate headerSimon Glass
Before adding new features, move these definitions to a separate header to avoid further cluttering common.h. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>