[U-Boot] [PATCH] zynq: Allow board specific files to over write CONFIG_EXTRA_ENV_SETTINGS.

[Philip Balister <philip@balister.org>]

The zynq-common.h header file is usually included last in the board specific
header file. Check if the CONFIG_EXTRA_ENV_SETTINGS variable is set before
applying the default value. This makes it easier for a board to set a
board specific environment.

Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Philip Balister <philip@opensdr.com>
---
 include/configs/zynq-common.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
index 9ff3df2..ea8b0b0 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -205,6 +205,7 @@
 #endif
 
 /* Default environment */
+#ifndef CONFIG_EXTRA_ENV_SETTINGS
 #define CONFIG_EXTRA_ENV_SETTINGS	\
 	"fit_image=fit.itb\0"		\
 	"load_addr=0x2000000\0"		\
@@ -227,6 +228,7 @@
 			"load usb 0 ${load_addr} ${fit_image} && " \
 			"bootm ${load_addr}; fi\0" \
 		DFU_ALT_INFO
+#endif
 
 #define CONFIG_BOOTCOMMAND		"run $modeboot"
 #define CONFIG_BOOTDELAY		3 /* -1 to Disable autoboot */
-- 
2.5.5