env/fat.c: allow loading from a FAT partition on the MMC boot device
I don't want to have to specify the device; only the partition.
This allows me to use the same image on internal eMMC or SD card for
Banana Pi R2, and it finds its own environment either way.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
[trini: Add #if/#else/#endif logic around CONFIG_SYS_MMC_ENV_DEV usage,
whitespace changes]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/env/Kconfig b/env/Kconfig
index 38e7fad..5784136 100644
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -434,6 +434,10 @@
If none, first valid partition in device D. If no
partition table then means device D.
+ If ENV_FAT_INTERFACE is set to "mmc" then device 'D' can be omitted,
+ leaving the string starting with a colon, and the boot device will
+ be used.
+
config ENV_FAT_FILE
string "Name of the FAT file to use for the environment"
depends on ENV_IS_IN_FAT