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<!-- Copyright (C) 2003 Red Hat, Inc. --><!-- This material may be distributed only subject to the terms --><!-- and conditions set forth in the Open Publication License, v1.0 --><!-- or later (the latest version is presently available at --><!-- http://www.opencontent.org/openpub/). --><!-- Distribution of the work or derivative of the work in any --><!-- standard (paper) book form is prohibited unless prior --><!-- permission is obtained from the copyright holder. --><HTML><HEAD><TITLE>fis free</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos Reference Manual"HREF="ecos-ref.html"><LINKREL="UP"TITLE="Flash Image System (FIS)"HREF="flash-image-system.html"><LINKREL="PREVIOUS"TITLE="fis list"HREF="fis-list-command.html"><LINKREL="NEXT"TITLE="fis create"HREF="fis-create-command.html"></HEAD><BODYCLASS="REFENTRY"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">eCos Reference Manual</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="fis-list-command.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="fis-create-command.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><H1><ANAME="FIS-FREE-COMMAND">fis free</H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN3991"></A><H2>Name</H2>fis free -- Free flash image</DIV><DIVCLASS="REFSYNOPSISDIV"><ANAME="AEN3994"><H2>Synopsis</H2><P><BCLASS="COMMAND">fis free</B> </P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN3997"></A><H2>Description</H2><P>This command shows which areas of the flash memory are currentlynot in use. When a block contains non-erased contents it is consideredin use. Since it is possible to force an image to be loaded at aparticular flash location, this command can be used to check whetherthat location is in use by any other image.</P><DIVCLASS="NOTE"><BLOCKQUOTECLASS="NOTE"><P><B>Note: </B>There is currently no cross-checking between actual flashcontents and the FIS directory, which mans that there could be asegment of flash which is not erased that does not correspond to anamed image, or vice-versa.</P></BLOCKQUOTE></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN4002"></A><H2>Examples</H2><P>Show free flash areas.<TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="SCREEN">RedBoot> <TTCLASS="USERINPUT"><B>fis free</B></TT> 0xA0040000 .. 0xA07C0000 0xA0840000 .. 0xA0FC0000</PRE></TD></TR></TABLE></P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="fis-list-command.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-ref.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="fis-create-command.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">fis list</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="flash-image-system.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">fis create</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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