[U-Boot] [PATCH v2 02/34] log: Add a Kconfig option to set the default log level

[Simon Glass]

At present the default log level is set to LOGL_INFO on start-up. Allow
this to be controlled from Kconfig.

Signed-off-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---

Changes in v2:
- Add the log-level names into the Kconfig help
- Correct the default log level to 6 (LOGL_INFO)

 common/Kconfig | 20 ++++++++++++++++++++
 common/log.c   |  2 +-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/common/Kconfig b/common/Kconfig
index 849d8ff90ad..e100c229496 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -535,6 +535,26 @@ config TPL_LOG_MAX_LEVEL
 	    8 - debug content
 	    9 - debug hardware I/O
 
+config LOG_DEFAULT_LEVEL
+	int "Default logging level to display"
+	default 6
+	help
+	  This is the default logging level set when U-Boot starts. It can
+	  be adjusted later using the 'log level' command. Note that setting
+	  this to a value abnove LOG_MAX_LEVEL will be ineffective, since the
+	  higher levels are not compiled in to U-Boot.
+
+	    0 - emergency
+	    1 - alert
+	    2 - critical
+	    3 - error
+	    4 - warning
+	    5 - note
+	    6 - info
+	    7 - debug
+	    8 - debug content
+	    9 - debug hardware I/O
+
 config LOG_CONSOLE
 	bool "Allow log output to the console"
 	depends on LOG
diff --git a/common/log.c b/common/log.c
index ec14644516c..ffb3cd69332 100644
--- a/common/log.c
+++ b/common/log.c
@@ -316,7 +316,7 @@ int log_init(void)
 	}
 	gd->flags |= GD_FLG_LOG_READY;
 	if (!gd->default_log_level)
-		gd->default_log_level = LOGL_INFO;
+		gd->default_log_level = CONFIG_LOG_DEFAULT_LEVEL;
 	gd->log_fmt = LOGF_DEFAULT;
 
 	return 0;
-- 
2.21.0.rc0.258.g878e2cd30e-goog