[U-Boot] [PATCH 2/2] ARM: at91: sama5d3: mmc: save enviroment as a fat file (uboot.env)

[Josh Wu]

This patch will save U-Boot environment as a file: uboot.env, in FAT partition
instead of saving it in raw sector of SD card.

Since saving environment in raw sector has risk of corrupting the SD card and
only can use very small size. Save as a FAT file has no above limitation.

Signed-off-by: Josh Wu <josh.wu at atmel.com>
---
 include/configs/sama5d3xek.h |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/include/configs/sama5d3xek.h b/include/configs/sama5d3xek.h
index 5a6f0fc..a77ab5f 100644
--- a/include/configs/sama5d3xek.h
+++ b/include/configs/sama5d3xek.h
@@ -196,9 +196,13 @@
 				"bootm 0x22000000 - 0x21000000"
 #elif CONFIG_SYS_USE_MMC
 /* bootstrap + u-boot + env in sd card */
-#define CONFIG_ENV_IS_IN_MMC
-#define CONFIG_ENV_OFFSET	0x2000
-#define CONFIG_ENV_SIZE		0x1000
+#define CONFIG_ENV_IS_IN_FAT
+#define CONFIG_FAT_WRITE
+#define FAT_ENV_INTERFACE	"mmc"
+#define FAT_ENV_FILE		"uboot.env"
+#define FAT_ENV_DEVICE		0
+#define FAT_ENV_PART		1
+#define CONFIG_ENV_SIZE		0x4000
 #define CONFIG_BOOTCOMMAND	"fatload mmc 0:1 0x21000000 dtb; " \
 				"fatload mmc 0:1 0x22000000 uImage; " \
 				"bootm 0x22000000 - 0x21000000"
-- 
1.7.9.5