log: Add an implementation of logging
Add the logging header file and implementation with some configuration
options to control it.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/Kconfig b/common/Kconfig
index c50d6eb..9747443 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -420,6 +420,62 @@
endmenu
+menu "Logging"
+
+config LOG
+ bool "Enable logging support"
+ help
+ This enables support for logging of status and debug messages. These
+ can be displayed on the console, recorded in a memory buffer, or
+ discarded if not needed. Logging supports various categories and
+ levels of severity.
+
+config SPL_LOG
+ bool "Enable logging support in SPL"
+ help
+ This enables support for logging of status and debug messages. These
+ can be displayed on the console, recorded in a memory buffer, or
+ discarded if not needed. Logging supports various categories and
+ levels of severity.
+
+config LOG_MAX_LEVEL
+ int "Maximum log level to record"
+ depends on LOG
+ default 5
+ help
+ This selects the maximum log level that will be recorded. Any value
+ higher than this will be ignored. If possible log statements below
+ this level will be discarded at build time. Levels:
+
+ 0 - panic
+ 1 - critical
+ 2 - error
+ 3 - warning
+ 4 - note
+ 5 - info
+ 6 - detail
+ 7 - debug
+
+config SPL_LOG_MAX_LEVEL
+ int "Maximum log level to record in SPL"
+ depends on SPL_LOG
+ default 3
+ help
+ This selects the maximum log level that will be recorded. Any value
+ higher than this will be ignored. If possible log statements below
+ this level will be discarded at build time. Levels:
+
+ 0 - panic
+ 1 - critical
+ 2 - error
+ 3 - warning
+ 4 - note
+ 5 - info
+ 6 - detail
+ 7 - debug
+
+endmenu
+
config DEFAULT_FDT_FILE
string "Default fdt file"
help