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><H1
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><H1
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><A
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><A
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NAME="FIS-UNLOCK-COMMAND">fis unlock</H1
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NAME="FIS-UNLOCK-COMMAND">fis unlock</H1
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><DIV
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><DIV
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CLASS="REFNAMEDIV"
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CLASS="REFNAMEDIV"
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><A
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><A
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NAME="AEN4257"
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NAME="AEN4257"
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></A
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></A
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><H2
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><H2
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>Name</H2
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>Name</H2
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>fis unlock -- Unlock flash area</DIV
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>fis unlock -- Unlock flash area</DIV
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><DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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CLASS="REFSYNOPSISDIV"
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><A
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><A
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NAME="AEN4260"><H2
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NAME="AEN4260"><H2
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>Synopsis</H2
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>Synopsis</H2
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><P
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><P
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><B
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><B
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CLASS="COMMAND"
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CLASS="COMMAND"
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>fis unlock</B
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>fis unlock</B
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> {-f <TT
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> {-f <TT
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CLASS="REPLACEABLE"
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CLASS="REPLACEABLE"
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><I
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><I
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>flash_address</I
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>flash_address</I
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></TT
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></TT
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>} {-l <TT
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>} {-l <TT
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CLASS="REPLACEABLE"
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CLASS="REPLACEABLE"
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><I
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><I
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>length</I
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>length</I
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></TT
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></TT
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>}</P
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>}</P
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></DIV
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></DIV
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><DIV
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><DIV
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CLASS="REFSECT1"
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CLASS="REFSECT1"
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><A
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><A
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NAME="AEN4267"
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NAME="AEN4267"
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></A
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></A
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><H2
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><H2
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>Arguments</H2
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>Arguments</H2
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><DIV
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><DIV
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><A
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><TH
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><TH
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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VALIGN="TOP"
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>Name</TH
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>Name</TH
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><TH
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><TH
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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>Type</TH
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>Type</TH
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><TH
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><TH
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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>Description</TH
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>Description</TH
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><TH
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><TH
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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>Default</TH
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>Default</TH
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></TR
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></TR
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></THEAD
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></THEAD
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><TBODY
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><TBODY
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><TR
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><TR
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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><TT
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><TT
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CLASS="REPLACEABLE"
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CLASS="REPLACEABLE"
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><I
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><I
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>flash_address</I
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>flash_address</I
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></TT
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></TT
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></TD
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></TD
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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>Number</TD
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>Number</TD
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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>Address of area to be unlocked.</TD
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>Address of area to be unlocked.</TD
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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> </TD
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> </TD
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></TR
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></TR
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><TR
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><TR
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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><TT
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><TT
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CLASS="REPLACEABLE"
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CLASS="REPLACEABLE"
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><I
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><I
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>length</I
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>length</I
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></TT
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></TT
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></TD
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></TD
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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>Number</TD
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>Number</TD
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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>Length of area to be unlocked.</TD
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>Length of area to be unlocked.</TD
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><TD
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><TD
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WIDTH="25%"
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WIDTH="25%"
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ALIGN="LEFT"
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ALIGN="LEFT"
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VALIGN="TOP"
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VALIGN="TOP"
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> </TD
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> </TD
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></TR
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></TR
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></TBODY
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></TBODY
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></TABLE
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></TABLE
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><P
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><P
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></P
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></P
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></DIV
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></DIV
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></DIV
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></DIV
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><DIV
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><DIV
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CLASS="REFSECT1"
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CLASS="REFSECT1"
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><A
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><A
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NAME="AEN4294"
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NAME="AEN4294"
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></A
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></A
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><H2
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><H2
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>Description</H2
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>Description</H2
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><P
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><P
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>This command is used to unlock a portion of flash memory forcibly, allowing
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>This command is used to unlock a portion of flash memory forcibly, allowing
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it to be updated. It must be issued for regions which have been locked before
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it to be updated. It must be issued for regions which have been locked before
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the FIS can reuse those portions of flash.</P
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the FIS can reuse those portions of flash.</P
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><DIV
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><DIV
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CLASS="NOTE"
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CLASS="NOTE"
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><BLOCKQUOTE
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><BLOCKQUOTE
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CLASS="NOTE"
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CLASS="NOTE"
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><P
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><P
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><B
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><B
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>Note: </B
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>Note: </B
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>Some flash devices power up in locked state and always need to
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>Some flash devices power up in locked state and always need to
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be manually unlocked before they can be written to.</P
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be manually unlocked before they can be written to.</P
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></BLOCKQUOTE
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></BLOCKQUOTE
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></DIV
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></DIV
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></DIV
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></DIV
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><DIV
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><DIV
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CLASS="REFSECT1"
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CLASS="REFSECT1"
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><A
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><A
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NAME="AEN4299"
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NAME="AEN4299"
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></A
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></A
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><H2
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><H2
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>Examples</H2
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>Examples</H2
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><P
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><P
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>Unlock an area of the flash
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>Unlock an area of the flash
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<TABLE
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><PRE
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><PRE
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CLASS="SCREEN"
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CLASS="SCREEN"
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>RedBoot> <TT
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>RedBoot> <TT
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CLASS="USERINPUT"
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CLASS="USERINPUT"
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><B
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><B
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>fis unlock -f 0xa0040000 -l 0x20000</B
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>fis unlock -f 0xa0040000 -l 0x20000</B
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></TT
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></TT
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>
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>
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... Unlock from 0xa0040000-0xa0060000: .</PRE
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... Unlock from 0xa0040000-0xa0060000: .</PRE
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></TD
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>fis lock</TD
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>fis lock</TD
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>fis erase</TD
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>fis erase</TD
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