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>

diff --git a/common/log.c b/common/log.c
index 212789d..a4ed7d7 100644 (file)
--- 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);