log: use console puts to output trace before LOG init

Use the console puts functions to output the traces before
the log initialization (when CONFIG_LOG is not activated).

This patch allows to display the first U-Boot traces
(with macro debug) when CONFIG_DEBUG_UART is activated
and not only drop them.

For example for traces in board_f.c requested by the macro debug,
when LOG_DEBUG is defined and CONFIG_LOG is activated.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/common/log.c b/common/log.c
index 212789d6b3..a4ed7d79f8 100644
--- a/common/log.c
+++ b/common/log.c
@@ -246,6 +246,15 @@ int _log(enum log_category_t cat, enum log_level_t level, const char *file,
 
 	if (!(gd->flags & GD_FLG_LOG_READY)) {
 		gd->log_drop_count++;
+
+		/* display dropped traces with console puts and DEBUG_UART */
+		if (rec.level <= CONFIG_LOG_DEFAULT_LEVEL || rec.force_debug) {
+			va_start(args, fmt);
+			vsnprintf(buf, sizeof(buf), fmt, args);
+			puts(buf);
+			va_end(args);
+		}
+
 		return -ENOSYS;
 	}
 	va_start(args, fmt);