<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>Bad block table related constants</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="MTD NAND Driver Programming Interface" /><link rel="up" href="ch08.html" title="Chapter 8. Constants" /><link rel="prev" href="ch08s03.html" title="Hardware control related constants" /><link rel="next" href="ch09.html" title="Chapter 9. Structures" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Bad block table related constants</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch08s03.html">Prev</a> </td><th width="60%" align="center">Chapter 8. Constants</th><td width="20%" align="right"> <a accesskey="n" href="ch09.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Bad block table related constants"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="Bad_block_table_constants"></a>Bad block table related constants</h2></div></div></div><p> These constants describe the options used for bad block table descriptors. </p><pre class="programlisting"> /* Options for the bad block table descriptors */ /* The number of bits used per block in the bbt on the device */ #define NAND_BBT_NRBITS_MSK 0x0000000F #define NAND_BBT_1BIT 0x00000001 #define NAND_BBT_2BIT 0x00000002 #define NAND_BBT_4BIT 0x00000004 #define NAND_BBT_8BIT 0x00000008 /* The bad block table is in the last good block of the device */ #define NAND_BBT_LASTBLOCK 0x00000010 /* The bbt is at the given page, else we must scan for the bbt */ #define NAND_BBT_ABSPAGE 0x00000020 /* The bbt is at the given page, else we must scan for the bbt */ #define NAND_BBT_SEARCH 0x00000040 /* bbt is stored per chip on multichip devices */ #define NAND_BBT_PERCHIP 0x00000080 /* bbt has a version counter at offset veroffs */ #define NAND_BBT_VERSION 0x00000100 /* Create a bbt if none axists */ #define NAND_BBT_CREATE 0x00000200 /* Search good / bad pattern through all pages of a block */ #define NAND_BBT_SCANALLPAGES 0x00000400 /* Scan block empty during good / bad block scan */ #define NAND_BBT_SCANEMPTY 0x00000800 /* Write bbt if neccecary */ #define NAND_BBT_WRITE 0x00001000 /* Read and write back block contents when writing bbt */ #define NAND_BBT_SAVECONTENT 0x00002000 </pre><p> </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch08s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch08.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ch09.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Hardware control related constants </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 9. Structures</td></tr></table></div></body></html>
