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authorWu, Josh <Josh.wu@atmel.com>2015-03-24 17:07:22 +0800
committerAndreas Bießmann <andreas.devel@googlemail.com>2015-04-01 01:04:29 +0200
commit23ac62d4c72c9be762cb8613b8269599295f7c88 (patch)
treec40aabe316f7bdb4daa1bf16ee525fec35b8b5d5
parentda78fb541494ac778a0fe66cc02e2fea33e228d9 (diff)
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ARM: at91: at91sam9n12ek: save the environment to a fat file in MMC card
Insteading in mmc's raw sectors, this patch will save the environment in a fat file (uboot.env) in mmc card's first FAT patition by default. If you want to save in mmc's raw sectors, you only need to define CONFIG_ENV_IS_IN_MMC. Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Bo Shen <voice.shen@atmel.com>
-rw-r--r--include/configs/at91sam9n12ek.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h
index f02fce9..058e0e4 100644
--- a/include/configs/at91sam9n12ek.h
+++ b/include/configs/at91sam9n12ek.h
@@ -201,11 +201,22 @@
#else /* CONFIG_SYS_USE_MMC */
/* bootstrap + u-boot + env + linux in mmc */
-#define CONFIG_ENV_IS_IN_MMC
-/* For FAT system, most cases it should be in the reserved sector */
+
+#ifdef CONFIG_ENV_IS_IN_MMC
+/* Use raw reserved sectors to save environment */
#define CONFIG_ENV_OFFSET 0x2000
#define CONFIG_ENV_SIZE 0x1000
#define CONFIG_SYS_MMC_ENV_DEV 0
+#else
+/* Use file in FAT file to save environment */
+#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_AND_PART "0"
+#define CONFIG_ENV_SIZE 0x4000
+#endif
+
#define CONFIG_BOOTCOMMAND \
"setenv bootargs ${console} ${mtdparts} ${bootargs_mmc};" \
"fatload mmc 0:1 0x21000000 dtb;" \