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Add some SD file paging logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2932 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
2010-09-08 22:06:38 +00:00
parent b3ae6bbf06
commit 3b35201498
5 changed files with 199 additions and 11 deletions
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Documentation/NuttxPortingGuide.html
+18
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@@ -2575,6 +2575,24 @@ build
If <code>CONFIG_PAGING_BINPATH</code> is defined, then it is the full path to a file on a mounted file system that contains a binary image of the NuttX executable.
Pages will be filled by reading from offsets into this file that correspond to virtual fault addresses.
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<li>
<code>CONFIG_PAGING_MOUNTPT</code>:
If <code>CONFIG_PAGING_BINPATH</code> is defined, additional options may be provided to control the initialization of underlying devices.
<code>CONFIG_PAGING_MOUNTPT</code> identifies the mountpoint to be used if a device is mounted.
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<li>
<code>CONFIG_PAGING_MINOR</code>:
Some mount operations require a &quot;minor&quot; number to identify the specific device instance.
Default: 0
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<li>
<code>CONFIG_PAGING_SDSLOT</code>:
If <code>CONFIG_PAGING_BINPATH</code> is defined, additional options may be provided to control the initialization of underlying devices.
<code>CONFIG_PAGING_SDSLOT</code> identifies the slot number of the SD device to initialize.
This must be undefined if SD is not being used.
This should be defined to be zero for the typical device that has only a single slot (See <code>CONFIG_MMCSD_NSLOTS</code>).
If defined, <code>CONFIG_PAGING_SDSLOT</code> will instruct certain board-specific logic to initialize the media in this SD slot.
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</ul>
<p>
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