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Add on-demand paging support to ARM9 prefetch abort handler

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2860 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
2010-08-17 01:37:39 +00:00
parent deb7fd1e23
commit 2d25eac7bc
7 changed files with 152 additions and 27 deletions
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Documentation/NuttxPortingGuide.html
+21 -1
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@@ -12,7 +12,7 @@
<h1><big><font color="#3c34ec">
<i>NuttX RTOS Porting Guide</i>
</font></big></h1>
<p>Last Updated: August 14, 2010</p>
<p>Last Updated: August 16, 2010</p>
</td>
</tr>
</table>
@@ -2390,6 +2390,26 @@ extern void up_ledoff(int led);
If CONFIG_PAGING is selected, then the following also apply:
</p>
<ul>
</li>
<li>
<code>CONFIG_PAGING_PAGESIZE</code>:
The size of one managed page.
This must be a value supported by the processor's memory management unit.
</li>
<li>
<code>CONFIG_PAGING_NLOCKED</code>:
This is the number of locked pages in the memory map.
The locked address region will then be from <code>CONFIG_DRAM_VSTART</code> through
(<code>CONFIG_DRAM_VSTART</code> + <code>CONFIG_PAGING_PAGESIZE</code>*<code>CONFIG_PAGING_NLOCKED</code>)
</li>
<li>
<code>CONFIG_PAGING_NPAGES</code>:
The number of pages in the paged region of the memory map.
This paged region then begins at
(<code>CONFIG_DRAM_VSTART</code> + <code>CONFIG_PAGING_PAGESIZE</code>*<code>CONFIG_PAGING_NLOCKED</code>)
and continues until (<code>CONFIG_DRAM_VSTART</code> +
<code>CONFIG_PAGING_PAGESIZE</code>*(<code>CONFIG_PAGING_NLOCKED</code> + <code>CONFIG_PAGING_NPAGES</code>)
</li>
<li>
<code>CONFIG_PAGING_DEFPRIO</code>:
The default, minimum priority of the page fill worker thread.