From 9c33138d729d1296cd4a7e3245266a6bf0ae5ea3 Mon Sep 17 00:00:00 2001
From: Piotr Dymacz <pepe2k@gmail.com>
Date: Mon, 10 Feb 2014 22:19:55 +0100
Subject: [PATCH] Allow to build images with disabled U-Boot console output

---
 Makefile                        |  3 +++
 u-boot/Makefile                 |  4 ++++
 u-boot/common/main.c            | 11 +++++++++++
 u-boot/include/configs/ar7240.h |  4 ++++
 4 files changed, 22 insertions(+)

diff --git a/Makefile b/Makefile
index f266e07..64cb467 100755
--- a/Makefile
+++ b/Makefile
@@ -6,6 +6,9 @@ export MAKECMD=make --silent ARCH=mips CROSS_COMPILE=mips-linux-gnu-
 # boot delay (time to autostart boot command)
 export CONFIG_BOOTDELAY=1
 
+# uncomment following line, to disable output in U-Boot console
+#export DISABLE_CONSOLE_OUTPUT=1
+
 tplink_mr3020:	export UBOOT_FILE_NAME=uboot_for_tp-link_tl-mr3020
 tplink_mr3020:	export MAX_UBOOT_SIZE=64
 tplink_mr3020:	export COMPRESSED_UBOOT=1
diff --git a/u-boot/Makefile b/u-boot/Makefile
index 8a09d51..48e3ed3 100755
--- a/u-boot/Makefile
+++ b/u-boot/Makefile
@@ -278,6 +278,10 @@ ifdef CFG_PLL_FREQ
 	@echo "#define CFG_PLL_FREQ "$(CFG_PLL_FREQ)           >> include/config.h
 endif
 
+ifdef DISABLE_CONSOLE_OUTPUT
+	@echo "#define CONFIG_SILENT_CONSOLE                1" >> include/config.h
+endif
+
 	@echo "#define CONFIG_DELAY_TO_AUTORUN_HTTPD        3" >> include/config.h
 	@echo "#define CONFIG_DELAY_TO_AUTORUN_CONSOLE      5" >> include/config.h
 	@echo "#define CONFIG_DELAY_TO_AUTORUN_NETCONSOLE   7" >> include/config.h
diff --git a/u-boot/common/main.c b/u-boot/common/main.c
index 0ae2c4d..65bef06 100755
--- a/u-boot/common/main.c
+++ b/u-boot/common/main.c
@@ -146,6 +146,17 @@ void main_loop(void){
 	// are we going to run web failsafe mode, U-Boot console, U-Boot netconsole or just boot command?
 	if(reset_button_status()){
 
+#ifdef CONFIG_SILENT_CONSOLE
+		if(gd->flags & GD_FLG_SILENT){
+			/* Restore serial console */
+			console_assign(stdout, "serial");
+			console_assign(stderr, "serial");
+		}
+
+		/* enable normal console output */
+		gd->flags &= ~(GD_FLG_SILENT);
+#endif
+
 		// wait 0,5s
 		milisecdelay(500);
 
diff --git a/u-boot/include/configs/ar7240.h b/u-boot/include/configs/ar7240.h
index 82d872c..23fb89a 100755
--- a/u-boot/include/configs/ar7240.h
+++ b/u-boot/include/configs/ar7240.h
@@ -33,6 +33,10 @@
 #define CFG_MEMTEST_END		0x83800000
 #define CFG_RX_ETH_BUFFER   16
 
+#if defined(CONFIG_SILENT_CONSOLE)
+	#define CONFIG_EXTRA_ENV_SETTINGS	"silent=1\0"
+#endif
+
 /*
  ** PLL Config for different CPU/DDR/AHB frequencies
  */
-- 
2.25.1