c_cache.htm

mips架构的bootloader,99左右的版本 但源代码现在没人更新了

<title>The cache Command</title>
<h1>cache</h1>

<!--INDEX "cache command" "display cache contents" locked valid tag -->

The cache command displays the contents of the caches.<p>

</dl><h2>Format</h2><dl><dd>

The format for the cache command is:<p>

<pre>
cache  [-idvl][set [adr]]
</pre>

where:<p>

<dl compact>
<dt>
-i	<dd>is a flag indicating that the Icache should be displayed.
<dt>
-d	<dd>is a flag indicating that the Dcache should be displayed (default).
<dt>
-v	<dd>is a flag indicating that only valid entries should be displayed.

<dt>
-l	<dd>is a flag indicating that only locked entries should be displayed
	(400x cores only).

<dt>
set	<dd>is the set number, eg. 0 or 1 for set0 and set1 respectively 
	(default is set0).
<dt>
adr	<dd>is the address of the first cache entry to be displayed.

</dl><p>

By default, the cache command displays the first 8 lines of set0 of the
Dcache.<p>

</dl><h2>Functional Description</h2><dl><dd>

The cache command displays the contents of the caches. If the user does 
not specify the 
starting address adr or set number, display starts at address zero.
Note that, because PMON generally executes from cache, the values
displayed by this command will change even though no user application
has been executed. With IMON this restriction is avoided.  <p>

If the user specifies the -i option, the contents of the Icache
will be displayed, otherwise the Dcache will be displayed.
If set is specified, the command will display the contents of the
specified cache set.
If adr is specified, the display will start at that address.<p>

Examples illustrating the use of the cache command follow.<p>

<pre>
PMON> cache			Display Dcache set0 starting at 
                                address zero.

PMON> cache 1 80020000		Display Dcache set 1 starting at
				address 0x80020000.

PMON> cache -i 0 80020000	Display Icache set 0 starting at
				address 0x80020000.
</pre>

</dl><h2>Files</h2><dl><dd>
The cache command is located in <a href="../lib/c400x.c">lib/c400x.c</a>
or <a href="../lib/c401x.c">lib/c401x.c</a>

</dl><h2>See Also</h2><dl><dd>
<a href="c_flush.htm">flush command</a>
</dl><p><hr>
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