It is useful to display log messages on the console. Add a simple driver
to handle this.
Note that this driver outputs to the console, which may be serial or
video. It does not specifically select serial output.
Signed-off-by: Simon Glass <s...@chromium.org>
Reviewed-by: Bin Meng <bmeng...@gmail.com>
---
Changes in v4: None
Changes in v3: None
Changes in v2:
- Update commit message to explain that this is not just for serial output
common/Kconfig | 20 ++++++++++++++++++++
common/Makefile | 1 +
common/log_console.c | 23 +++++++++++++++++++++++
3 files changed, 44 insertions(+)
create mode 100644 common/log_console.c
diff --git a/common/Kconfig b/common/Kconfig
index 9747443feb..1b157e47c3 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -474,6 +474,26 @@ config SPL_LOG_MAX_LEVEL
6 - detail
7 - debug
+config LOG_CONSOLE
+ bool "Allow log output to the console"
+ depends on LOG
+ default y
+ help
+ Enables a log driver which writes log records to the console.
+ Generally the console is the serial port or LCD display. Only the
+ log message is shown - other details like level, category, file and
+ line number are omitted.
+
+config LOG_SPL_CONSOLE
+ bool "Allow log output to the console in SPL"
+ depends on LOG_SPL
+ default y
+ help
+ Enables a log driver which writes log records to the console.
+ Generally the console is the serial port or LCD display. Only the
+ log message is shown - other details like level, category, file and
+ line number are omitted.
+
endmenu
config DEFAULT_FDT_FILE
diff --git a/common/Makefile b/common/Makefile
index f4b632761f..14166209fe 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -129,5 +129,6 @@ obj-$(CONFIG_FSL_DDR_INTERACTIVE) += cli_simple.o
cli_readline.o
obj-$(CONFIG_CMD_DFU) += dfu.o
obj-y += command.o
obj-$(CONFIG_$(SPL_)LOG) += log.o
+obj-$(CONFIG_$(SPL_)LOG_CONSOLE) += log_console.o
obj-y += s_record.o
obj-y += xyzModem.o
diff --git a/common/log_console.c b/common/log_console.c
new file mode 100644
index 0000000000..5af73bd8be
--- /dev/null
+++ b/common/log_console.c
@@ -0,0 +1,23 @@
+/*
+ * Logging support
+ *
+ * Copyright (c) 2017 Google, Inc
+ * Written by Simon Glass <s...@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <log.h>
+
+static int log_console_emit(struct log_device *ldev, struct log_rec *rec)
+{
+ puts(rec->msg);
+
+ return 0;
+}
+
+LOG_DRIVER(console) = {
+ .name = "console",
+ .emit = log_console_emit,
+};
--
2.15.0.531.g2ccb3012c9-goog
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