-# Configuration file for fw_(printenv/saveenv) utility.
-# Up to two entries are valid, in this case the redundand
+# Configuration file for fw_(printenv/setenv) utility.
+# Up to two entries are valid, in this case the redundant
# environment sector is assumed present.
-# Notice, that the "Number of sectors" is ignored on NOR.
+# Notice, that the "Number of sectors" is not required on NOR and SPI-dataflash.
+# Futhermore, if the Flash sector size is omitted, this value is assumed to
+# be the same as the Environment size, which is valid for NOR and SPI-dataflash
+# Device offset must be prefixed with 0x to be parsed as a hexadecimal value.
+# NOR example
# MTD device name Device offset Env. size Flash sector size Number of sectors
/dev/mtd1 0x0000 0x4000 0x4000
/dev/mtd2 0x0000 0x4000 0x4000
+# MTD SPI-dataflash example
+# MTD device name Device offset Env. size Flash sector size Number of sectors
+#/dev/mtd5 0x4200 0x4200
+#/dev/mtd6 0x4200 0x4200
+
# NAND example
#/dev/mtd0 0x4000 0x4000 0x20000 2
+
+# On a block device a negative offset is treated as a backwards offset from the
+# end of the device/partition, rather than a forwards offset from the start.
+
+# Block device example
+#/dev/mmcblk0 0xc0000 0x20000
+#/dev/mmcblk0 -0x20000 0x20000
+
+# VFAT example
+#/boot/uboot.env 0x0000 0x4000
+
+# UBI volume
+#/dev/ubi0_0 0x0 0x1f000 0x1f000
+#/dev/ubi0_1 0x0 0x1f000 0x1f000
+
+# UBI volume by name
+#/dev/ubi0:env 0x0 0x1f000 0x1f000
+#/dev/ubi0:env-redund 0x0 0x1f000 0x1f000