tools: mkimage: use common ALIGN to do the size align

[oweals/u-boot.git] / tools / env / fw_env.config

diff --git a/tools/env/fw_env.config b/tools/env/fw_env.config
index 776e16f784c59934c29b42237bacc80c9ab60a68..053895a2c07b23891e098c2370066204f04b8ea1 100644 (file)
--- a/tools/env/fw_env.config
+++ b/tools/env/fw_env.config
@@ -4,6 +4,7 @@
 # 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
@@ -18,8 +19,20 @@
 # 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