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>eCos Reference Manual</TH
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>eCos Reference Manual</TH
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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-LOCK-COMMAND">fis lock</H1
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NAME="FIS-LOCK-COMMAND">fis lock</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="AEN4208"
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NAME="AEN4208"
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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 lock -- Lock flash area</DIV
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>fis lock -- Lock 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="AEN4211"><H2
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NAME="AEN4211"><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 lock</B
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>fis lock</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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><A
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><A
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NAME="AEN4218"
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NAME="AEN4218"
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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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CLASS="INFORMALTABLE"
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CLASS="INFORMALTABLE"
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><A
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><A
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NAME="AEN4220"><P
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></P
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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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>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 locked.</TD
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>Address of area to be locked.</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 locked.</TD
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>Length of area to be locked.</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="AEN4245"
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NAME="AEN4245"
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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 write-protect (lock) a portion of flash memory,
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>This command is used to write-protect (lock) a portion of flash memory,
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to prevent accidental overwriting of images. In order to make make any modifications
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to prevent accidental overwriting of images. In order to make make any modifications
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to the flash, a matching <B
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to the flash, a matching <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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> command must be
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> command must be
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issued. This command is optional and will only be provided on hardware
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issued. This command is optional and will only be provided on hardware
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which can support write-protection of the flash space.</P
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which can support write-protection of the flash space.</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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>Depending on the system, attempting to write to write-protected flash
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>Depending on the system, attempting to write to write-protected flash
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may generate errors or warnings, or be benignly quiet. </P
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may generate errors or warnings, or be benignly quiet. </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="AEN4251"
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NAME="AEN4251"
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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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>Lock an area of the flash
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>Lock an area of the flash
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<TABLE
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><TR
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><TD
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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 lock -f 0xa0040000 -l 0x20000</B
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>fis lock -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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... Lock from 0xa0040000-0xa0060000: .</PRE
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... Lock from 0xa0040000-0xa0060000: .</PRE
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></TD
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></TD
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></TR
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></TR
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HREF="fis-delete-command.html"
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>Prev</A
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>fis delete</TD
|
>fis delete</TD
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><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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>fis unlock</TD
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>fis unlock</TD
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