[PATCH v2 01/13] smegw01: Enable setting additional boot params

[Fabio Estevam <festevam@gmail.com>]

From: Eduard Strehlau <eduard@lionizers.com>

Introduce EXTRA_BOOTPARAMS to allow passing additional parameters
to kernel command line. This is useful for debugging purposes.

Signed-off-by: Eduard Strehlau <eduard@lionizers.com>
Signed-off-by: Fabio Estevam <festevam@denx.de>
---
Changes since v1:
- None

 include/configs/smegw01.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/configs/smegw01.h b/include/configs/smegw01.h
index 11031744be..a356f095a6 100644
--- a/include/configs/smegw01.h
+++ b/include/configs/smegw01.h
@@ -17,6 +17,11 @@
 /* MMC Config*/
 #define CFG_SYS_FSL_ESDHC_ADDR	0
 
+/* default to no extra bootparams, we need an empty define for stringification*/
+#ifndef EXTRA_BOOTPARAMS
+#define EXTRA_BOOTPARAMS
+#endif
+
 #define CFG_EXTRA_ENV_SETTINGS \
 	"image=zImage\0" \
 	"console=ttymxc0\0" \
@@ -26,7 +31,8 @@
 	"mmcdev=0\0" \
 	"mmcpart=1\0" \
 	"mmcargs=setenv bootargs console=${console},${baudrate} " \
-		"root=/dev/mmcblk0p${mmcpart} rootwait rw\0" \
+		"root=/dev/mmcblk0p${mmcpart} rootwait rw " \
+		__stringify(EXTRA_BOOTPARAMS) "\0" \
 	"loadimage=load mmc ${mmcdev}:${mmcpart} ${loadaddr} boot/${image}\0" \
 	"loadfdt=load mmc ${mmcdev}:${mmcpart} ${fdt_addr} boot/${fdtfile}\0" \
 	"mmcboot=echo Booting from mmc ...; " \
-- 
2.38.1