Description

This command shows which areas of the flash memory are currently not in use. When a block contains non-erased contents it is considered in use. Since it is possible to force an image to be loaded at a particular flash location, this command can be used to check whether that location is in use by any other image.

	Note
	There is currently no cross-checking between actual flash contents and the FIS directory, which mans that there could be a segment of flash which is not erased that does not correspond to a named image, or vice-versa.

Examples

Show free flash areas.

RedBoot> fis free
        0xA0040000 .. 0xA07C0000
        0xA0840000 .. 0xA0FC0000