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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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><TITLE
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>fis erase</TITLE
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<META
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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"><LINK
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REL="HOME"
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TITLE="eCos Reference Manual"
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TITLE="Flash Image System (FIS)"
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TITLE="fis unlock"
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>eCos Reference Manual</TH
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>Next</A
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><H1
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><A
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NAME="FIS-ERASE-COMMAND">fis erase</H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN4305"
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></A
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><H2
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>Name</H2
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>fis erase&nbsp;--&nbsp;Erase flash area</DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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><A
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NAME="AEN4308"><H2
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>Synopsis</H2
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><P
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><B
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CLASS="COMMAND"
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>fis erase</B
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>  {-f <TT
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CLASS="REPLACEABLE"
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><I
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>flash_address</I
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></TT
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>} {-l <TT
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CLASS="REPLACEABLE"
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><I
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>length</I
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></TT
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>}</P
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN4315"
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></A
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><H2
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>Arguments</H2
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><DIV
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CLASS="INFORMALTABLE"
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><A
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NAME="AEN4317"><P
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></P
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><TABLE
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BORDER="1"
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CLASS="CALSTABLE"
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><THEAD
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><TH
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WIDTH="25%"
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>Name</TH
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><TH
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WIDTH="25%"
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ALIGN="LEFT"
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>Type</TH
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><TH
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Description</TH
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><TH
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Default</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="REPLACEABLE"
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><I
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>flash_address</I
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></TT
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></TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Number</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Address of area to be erased.</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>&nbsp;</TD
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></TR
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><TR
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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><TT
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CLASS="REPLACEABLE"
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><I
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>length</I
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></TT
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></TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Number</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Length of area to be erased.</TD
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><TD
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>&nbsp;</TD
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></TR
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></TBODY
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><P
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></P
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN4342"
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></A
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><H2
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>Description</H2
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><P
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>This command is used to erase a portion of flash memory forcibly. There
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is no cross-checking to ensure that the area being erased does not correspond
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to an existing image.</P
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN4345"
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></A
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><H2
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>Examples</H2
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><P
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>Erase an area of the flash
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<TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>RedBoot&#62; <TT
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CLASS="USERINPUT"
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><B
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>fis erase -f 0xa0040000 -l 0x20000</B
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></TT
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>
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... Erase from 0xa0040000-0xa0060000: .</PRE
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></TD
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></TR
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></TABLE
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></P
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WIDTH="33%"
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HREF="fis-unlock-command.html"
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>Prev</A
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HREF="ecos-ref.html"
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>Home</A
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HREF="fis-write-command.html"
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>fis unlock</TD
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ALIGN="center"
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HREF="flash-image-system.html"
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>Up</A
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WIDTH="33%"
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>fis write</TD
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