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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<!-- or later (the latest version is presently available at          -->
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<HTML
><HEAD
><TITLE
>cache</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="eCos Reference Manual"
HREF="ecos-ref.html"><LINK
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TITLE="Common Commands"
HREF="common-commands.html"><LINK
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TITLE="baudrate"
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><BODY
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TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
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><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>eCos Reference Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="baudrate-command.html"
ACCESSKEY="P"
>Prev</A
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></TD
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ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="CACHE-COMMAND">cache</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN3044"
></A
><H2
>Name</H2
>cache&nbsp;--&nbsp;Control hardware caches</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN3047"><H2
>Synopsis</H2
><P
><B
CLASS="COMMAND"
>cache</B
>  [on | off]</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3053"
></A
><H2
>Arguments</H2
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN3055"><P
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><THEAD
><TR
><TH
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>Name</TH
><TH
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>Type</TH
><TH
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>Description</TH
><TH
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>Default</TH
></TR
></THEAD
><TBODY
><TR
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>on</TD
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>&nbsp;</TD
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>Turn the caches on</TD
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>none</I
></SPAN
></TD
></TR
><TR
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>off</TD
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>&nbsp;</TD
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
>Turn the caches off</TD
><TD
WIDTH="25%"
ALIGN="LEFT"
VALIGN="TOP"
><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>none</I
></SPAN
></TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3080"
></A
><H2
>Description</H2
><P
>The <B
CLASS="COMMAND"
>cache</B
> command is used to manipulate the caches on the processor. </P
><P
>With no options, this command specifies the state of the system caches.</P
><P
>When an option is given, the caches are turned off or on appropriately.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3086"
></A
><H2
>Examples</H2
><P
>Show the current cache state.
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>
RedBoot&#62; <TT
CLASS="USERINPUT"
><B
>cache</B
></TT
>
Data cache: On, Instruction cache: On</PRE
></TD
></TR
></TABLE
> </P
><P
>Disable the caches.
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>
RedBoot&#62; <TT
CLASS="USERINPUT"
><B
>cache off</B
></TT
>
RedBoot&#62; <TT
CLASS="USERINPUT"
><B
>cache</B
></TT
>
Data cache: Off, Instruction cache: Off</PRE
></TD
></TR
></TABLE
> </P
><P
>Enable the caches.
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>
RedBoot&#62; <TT
CLASS="USERINPUT"
><B
>cache on</B
></TT
>
RedBoot&#62; <TT
CLASS="USERINPUT"
><B
>cache</B
></TT
>
Data cache: On, Instruction cache: On</PRE
></TD
></TR
></TABLE
>
      </P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="baudrate-command.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ecos-ref.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="channel-command.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>baudrate</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="common-commands.html"
ACCESSKEY="U"
>Up</A
></TD
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ALIGN="right"
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>channel</TD
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></DIV
></BODY
></HTML
>

Line No.	Rev	Author	Line
1	28	unneback	`<!-- Copyright (C) 2003 Red Hat, Inc. -->`
2			`<!-- This material may be distributed only subject to the terms -->`
3			`<!-- and conditions set forth in the Open Publication License, v1.0 -->`
4			`<!-- or later (the latest version is presently available at -->`
5			`<!-- http://www.opencontent.org/openpub/). -->`
6			`<!-- Distribution of the work or derivative of the work in any -->`
7			`<!-- standard (paper) book form is prohibited unless prior -->`
8			`<!-- permission is obtained from the copyright holder. -->`
9			`<HTML`
10			`><HEAD`
11			`><TITLE`
12			`>cache</TITLE`
13			`><meta name="MSSmartTagsPreventParsing" content="TRUE">`
14			`<META`
15			`NAME="GENERATOR"`
16			`CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+`
17			`"><LINK`
18			`REL="HOME"`
19			`TITLE="eCos Reference Manual"`
20			`HREF="ecos-ref.html"><LINK`
21			`REL="UP"`
22			`TITLE="Common Commands"`
23			`HREF="common-commands.html"><LINK`
24			`REL="PREVIOUS"`
25			`TITLE="baudrate"`
26			`HREF="baudrate-command.html"><LINK`
27			`REL="NEXT"`
28			`TITLE="channel"`
29			`HREF="channel-command.html"></HEAD`
30			`><BODY`
31			`CLASS="REFENTRY"`
32			`BGCOLOR="#FFFFFF"`
33			`TEXT="#000000"`
34			`LINK="#0000FF"`
35			`VLINK="#840084"`
36			`ALINK="#0000FF"`
37			`><DIV`
38			`CLASS="NAVHEADER"`
39			`><TABLE`
40			`SUMMARY="Header navigation table"`
41			`WIDTH="100%"`
42			`BORDER="0"`
43			`CELLPADDING="0"`
44			`CELLSPACING="0"`
45			`><TR`
46			`><TH`
47			`COLSPAN="3"`
48			`ALIGN="center"`
49			`>eCos Reference Manual</TH`
50			`></TR`
51			`><TR`
52			`><TD`
53			`WIDTH="10%"`
54			`ALIGN="left"`
55			`VALIGN="bottom"`
56			`><A`
57			`HREF="baudrate-command.html"`
58			`ACCESSKEY="P"`
59			`>Prev</A`
60			`></TD`
61			`><TD`
62			`WIDTH="80%"`
63			`ALIGN="center"`
64			`VALIGN="bottom"`
65			`></TD`
66			`><TD`
67			`WIDTH="10%"`
68			`ALIGN="right"`
69			`VALIGN="bottom"`
70			`><A`
71			`HREF="channel-command.html"`
72			`ACCESSKEY="N"`
73			`>Next</A`
74			`></TD`
75			`></TR`
76			`></TABLE`
77			`><HR`
78			`ALIGN="LEFT"`
79			`WIDTH="100%"></DIV`
80			`><H1`
81			`><A`
82			`NAME="CACHE-COMMAND">cache</H1`
83			`><DIV`
84			`CLASS="REFNAMEDIV"`
85			`><A`
86			`NAME="AEN3044"`
87			`></A`
88			`><H2`
89			`>Name</H2`
90			`>cache -- Control hardware caches</DIV`
91			`><DIV`
92			`CLASS="REFSYNOPSISDIV"`
93			`><A`
94			`NAME="AEN3047"><H2`
95			`>Synopsis</H2`
96			`><P`
97			`><B`
98			`CLASS="COMMAND"`
99			`>cache</B`
100			`> [on \| off]</P`
101			`></DIV`
102			`><DIV`
103			`CLASS="REFSECT1"`
104			`><A`
105			`NAME="AEN3053"`
106			`></A`
107			`><H2`
108			`>Arguments</H2`
109			`><DIV`
110			`CLASS="INFORMALTABLE"`
111			`><A`
112			`NAME="AEN3055"><P`
113			`></P`
114			`><TABLE`
115			`BORDER="1"`
116			`CLASS="CALSTABLE"`
117			`><THEAD`
118			`><TR`
119			`><TH`
120			`WIDTH="25%"`
121			`ALIGN="LEFT"`
122			`VALIGN="TOP"`
123			`>Name</TH`
124			`><TH`
125			`WIDTH="25%"`
126			`ALIGN="LEFT"`
127			`VALIGN="TOP"`
128			`>Type</TH`
129			`><TH`
130			`WIDTH="25%"`
131			`ALIGN="LEFT"`
132			`VALIGN="TOP"`
133			`>Description</TH`
134			`><TH`
135			`WIDTH="25%"`
136			`ALIGN="LEFT"`
137			`VALIGN="TOP"`
138			`>Default</TH`
139			`></TR`
140			`></THEAD`
141			`><TBODY`
142			`><TR`
143			`><TD`
144			`WIDTH="25%"`
145			`ALIGN="LEFT"`
146			`VALIGN="TOP"`
147			`>on</TD`
148			`><TD`
149			`WIDTH="25%"`
150			`ALIGN="LEFT"`
151			`VALIGN="TOP"`
152			`> </TD`
153			`><TD`
154			`WIDTH="25%"`
155			`ALIGN="LEFT"`
156			`VALIGN="TOP"`
157			`>Turn the caches on</TD`
158			`><TD`
159			`WIDTH="25%"`
160			`ALIGN="LEFT"`
161			`VALIGN="TOP"`
162			`><SPAN`
163			`CLASS="emphasis"`
164			`><I`
165			`CLASS="EMPHASIS"`
166			`>none</I`
167			`></SPAN`
168			`></TD`
169			`></TR`
170			`><TR`
171			`><TD`
172			`WIDTH="25%"`
173			`ALIGN="LEFT"`
174			`VALIGN="TOP"`
175			`>off</TD`
176			`><TD`
177			`WIDTH="25%"`
178			`ALIGN="LEFT"`
179			`VALIGN="TOP"`
180			`> </TD`
181			`><TD`
182			`WIDTH="25%"`
183			`ALIGN="LEFT"`
184			`VALIGN="TOP"`
185			`>Turn the caches off</TD`
186			`><TD`
187			`WIDTH="25%"`
188			`ALIGN="LEFT"`
189			`VALIGN="TOP"`
190			`><SPAN`
191			`CLASS="emphasis"`
192			`><I`
193			`CLASS="EMPHASIS"`
194			`>none</I`
195			`></SPAN`
196			`></TD`
197			`></TR`
198			`></TBODY`
199			`></TABLE`
200			`><P`
201			`></P`
202			`></DIV`
203			`></DIV`
204			`><DIV`
205			`CLASS="REFSECT1"`
206			`><A`
207			`NAME="AEN3080"`
208			`></A`
209			`><H2`
210			`>Description</H2`
211			`><P`
212			`>The <B`
213			`CLASS="COMMAND"`
214			`>cache</B`
215			`> command is used to manipulate the caches on the processor. </P`
216			`><P`
217			`>With no options, this command specifies the state of the system caches.</P`
218			`><P`
219			`>When an option is given, the caches are turned off or on appropriately.</P`
220			`></DIV`
221			`><DIV`
222			`CLASS="REFSECT1"`
223			`><A`
224			`NAME="AEN3086"`
225			`></A`
226			`><H2`
227			`>Examples</H2`
228			`><P`
229			`>Show the current cache state.`
230			`<TABLE`
231			`BORDER="5"`
232			`BGCOLOR="#E0E0F0"`
233			`WIDTH="70%"`
234			`><TR`
235			`><TD`
236			`><PRE`
237			`CLASS="SCREEN"`
238			`>`
239			`RedBoot> <TT`
240			`CLASS="USERINPUT"`
241			`><B`
242			`>cache</B`
243			`></TT`
244			`>`
245			`Data cache: On, Instruction cache: On</PRE`
246			`></TD`
247			`></TR`
248			`></TABLE`
249			`> </P`
250			`><P`
251			`>Disable the caches.`
252			`<TABLE`
253			`BORDER="5"`
254			`BGCOLOR="#E0E0F0"`
255			`WIDTH="70%"`
256			`><TR`
257			`><TD`
258			`><PRE`
259			`CLASS="SCREEN"`
260			`>`
261			`RedBoot> <TT`
262			`CLASS="USERINPUT"`
263			`><B`
264			`>cache off</B`
265			`></TT`
266			`>`
267			`RedBoot> <TT`
268			`CLASS="USERINPUT"`
269			`><B`
270			`>cache</B`
271			`></TT`
272			`>`
273			`Data cache: Off, Instruction cache: Off</PRE`
274			`></TD`
275			`></TR`
276			`></TABLE`
277			`> </P`
278			`><P`
279			`>Enable the caches.`
280			`<TABLE`
281			`BORDER="5"`
282			`BGCOLOR="#E0E0F0"`
283			`WIDTH="70%"`
284			`><TR`
285			`><TD`
286			`><PRE`
287			`CLASS="SCREEN"`
288			`>`
289			`RedBoot> <TT`
290			`CLASS="USERINPUT"`
291			`><B`
292			`>cache on</B`
293			`></TT`
294			`>`
295			`RedBoot> <TT`
296			`CLASS="USERINPUT"`
297			`><B`
298			`>cache</B`
299			`></TT`
300			`>`
301			`Data cache: On, Instruction cache: On</PRE`
302			`></TD`
303			`></TR`
304			`></TABLE`
305			`>`
306			`</P`
307			`></DIV`
308			`><DIV`
309			`CLASS="NAVFOOTER"`
310			`><HR`
311			`ALIGN="LEFT"`
312			`WIDTH="100%"><TABLE`
313			`SUMMARY="Footer navigation table"`
314			`WIDTH="100%"`
315			`BORDER="0"`
316			`CELLPADDING="0"`
317			`CELLSPACING="0"`
318			`><TR`
319			`><TD`
320			`WIDTH="33%"`
321			`ALIGN="left"`
322			`VALIGN="top"`
323			`><A`
324			`HREF="baudrate-command.html"`
325			`ACCESSKEY="P"`
326			`>Prev</A`
327			`></TD`
328			`><TD`
329			`WIDTH="34%"`
330			`ALIGN="center"`
331			`VALIGN="top"`
332			`><A`
333			`HREF="ecos-ref.html"`
334			`ACCESSKEY="H"`
335			`>Home</A`
336			`></TD`
337			`><TD`
338			`WIDTH="33%"`
339			`ALIGN="right"`
340			`VALIGN="top"`
341			`><A`
342			`HREF="channel-command.html"`
343			`ACCESSKEY="N"`
344			`>Next</A`
345			`></TD`
346			`></TR`
347			`><TR`
348			`><TD`
349			`WIDTH="33%"`
350			`ALIGN="left"`
351			`VALIGN="top"`
352			`>baudrate</TD`
353			`><TD`
354			`WIDTH="34%"`
355			`ALIGN="center"`
356			`VALIGN="top"`
357			`><A`
358			`HREF="common-commands.html"`
359			`ACCESSKEY="U"`
360			`>Up</A`
361			`></TD`
362			`><TD`
363			`WIDTH="33%"`
364			`ALIGN="right"`
365			`VALIGN="top"`
366			`>channel</TD`
367			`></TR`
368			`></TABLE`
369			`></DIV`
370			`></BODY`
371			`></HTML`
372			`>`

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