Implement log framework
This patch gives users control over logging messages printed from the C
code using the LOG macros defined in debug.h Users now have the ability
to reduce the log_level at run time using the tf_log_set_max_level()
function. The default prefix string can be defined by platform by
overriding the `plat_log_get_prefix()` platform API which is also
introduced in this patch.
The new log framework results in saving of some RO data. For example,
when BL1 is built for FVP with LOG_LEVEL=LOG_LEVEL_VERBOSE, resulted
in saving 384 bytes of RO data and increase of 8 bytes of RW data. The
framework also adds about 108 bytes of code to the release build of FVP.
Fixes ARM-software/tf-issues#462
Change-Id: I476013d9c3deedfdd4c8b0b0f125665ba6250554
Co-authored-by: Eleanor Bonnici <Eleanor.bonnici@arm.com>
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index bd721bb..e189f64 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -79,6 +79,7 @@
int plat_crash_console_flush(void);
void plat_error_handler(int err) __dead2;
void plat_panic_handler(void) __dead2;
+const char *plat_log_get_prefix(unsigned int log_level);
/*******************************************************************************
* Mandatory BL1 functions