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    <title>topic i.MX6UL 修改Nand 分区 in i.MX Processors</title>
    <link>https://community.nxp.com/t5/i-MX-Processors/i-MX6UL-%E4%BF%AE%E6%94%B9Nand-%E5%88%86%E5%8C%BA/m-p/582072#M88450</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0);"&gt;遇到如下问题：&lt;BR /&gt;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style="color: black; font-family: '微软雅黑',sans-serif; font-size: 10.5pt;"&gt;修改nand的分区，原来64m-boot，16m-kernel，16m-dtb，-rootfs，我现在改为&lt;/SPAN&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0);"&gt;mtdparts=gpmi-nand:2m(boot),2m(logo),6m(kernel),2m(dtb),-(rootfs&lt;/SPAN&gt;），在烧写fileware/和files/目录下都替换了新mtdparts的uboot.imx，但是烧写不成功，提示mtd太小！是否需要改uboot里nand相关的ecc大小等的相关操作函数？&lt;/P&gt;&lt;P&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0); color: black; font-size: 10.5pt; font-family: '微软雅黑',sans-serif;"&gt;nand: Micron MT29F32G08CBADBWP&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN lang="EN-US" style="color: black; font-family: '微软雅黑',sans-serif; font-size: 10.5pt;"&gt; &lt;SPAN lang="EN-US" style="color: black; font-family: '微软雅黑',sans-serif; font-size: 10.5pt;"&gt;nand: 4096MiB, MLC, page size: 8192, OOB size: 744&lt;BR /&gt;&lt;BR /&gt;gpmi-nand 1806000.gpmi-nand:&amp;nbsp; Default ecc strength(52) is beyond our capability(40). Try to use maximum ecc strength controller&lt;BR /&gt;&lt;BR /&gt; can support.&lt;BR /&gt;&lt;BR /&gt;gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5&lt;BR /&gt;&lt;BR /&gt;Bad block table found at page 524032, version 0x01&lt;BR /&gt;&lt;BR /&gt;Bad block table found at page 523776, version 0x01&lt;BR /&gt;&lt;BR /&gt;nand_read_bbt: bad block at 0x00000b400000&lt;BR /&gt;&lt;BR /&gt;nand_read_bbt: bad block at 0x00000b600000&lt;BR /&gt;&lt;BR /&gt;5 cmdlinepart partitions found on MTD device gpmi-nand&lt;BR /&gt;&lt;BR /&gt;Creating 5 MTD partitions on "gpmi-nand":&lt;BR /&gt;&lt;BR /&gt;0x000000000000-0x000000200000 : "boot"&lt;BR /&gt;&lt;BR /&gt;0x000000200000-0x000000400000 : "logo"&lt;BR /&gt;&lt;BR /&gt;0x000000400000-0x000000a00000 : "kernel"&lt;BR /&gt;&lt;BR /&gt;0x000000a00000-0x000000c00000 : "dtb"&lt;BR /&gt;&lt;BR /&gt;0x000000c00000-0x000100000000 : "rootfs"&lt;BR /&gt;&lt;BR /&gt;gpmi-nand 1806000.gpmi-nand: driver registered.&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0); color: black; font-size: 10.5pt; font-family: '微软雅黑',sans-serif;"&gt;mtd: opening: "/dev/mtd0"&lt;BR /&gt;&lt;BR /&gt;NFC geometry :&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; ECC Strength&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; : 40&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Page Size in Bytes : 8936&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Metadata size&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; : 10&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; ECC Chunk Size in byte : 1024&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; ECC Chunk count&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; : 8&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Block Mark Byte Offset : 7692&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Block Mark Bit Offset&amp;nbsp; : 0&lt;BR /&gt;&lt;BR /&gt;====================================================&lt;BR /&gt;&lt;BR /&gt;mtd: opened '/dev/mtd0' - '(null)'&lt;BR /&gt;&lt;BR /&gt;mtd: mtd size too small&lt;BR /&gt;&lt;BR /&gt;mtd_init failed!&lt;BR /&gt;&lt;BR /&gt;UTP: sending Non-success to kernel for command $ kobs-ng init -x -v --chip_0_device_path=/dev/mtd0 $FILE.&lt;BR /&gt;&lt;BR /&gt;utp_poll: exit with status 1280&lt;BR /&gt;&lt;BR /&gt;random: nonblocking pool is initialized.&lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Mon, 18 Jul 2016 07:00:52 GMT</pubDate>
    <dc:creator>yongban</dc:creator>
    <dc:date>2016-07-18T07:00:52Z</dc:date>
    <item>
      <title>i.MX6UL 修改Nand 分区</title>
      <link>https://community.nxp.com/t5/i-MX-Processors/i-MX6UL-%E4%BF%AE%E6%94%B9Nand-%E5%88%86%E5%8C%BA/m-p/582072#M88450</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0);"&gt;遇到如下问题：&lt;BR /&gt;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style="color: black; font-family: '微软雅黑',sans-serif; font-size: 10.5pt;"&gt;修改nand的分区，原来64m-boot，16m-kernel，16m-dtb，-rootfs，我现在改为&lt;/SPAN&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0);"&gt;mtdparts=gpmi-nand:2m(boot),2m(logo),6m(kernel),2m(dtb),-(rootfs&lt;/SPAN&gt;），在烧写fileware/和files/目录下都替换了新mtdparts的uboot.imx，但是烧写不成功，提示mtd太小！是否需要改uboot里nand相关的ecc大小等的相关操作函数？&lt;/P&gt;&lt;P&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0); color: black; font-size: 10.5pt; font-family: '微软雅黑',sans-serif;"&gt;nand: Micron MT29F32G08CBADBWP&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN lang="EN-US" style="color: black; font-family: '微软雅黑',sans-serif; font-size: 10.5pt;"&gt; &lt;SPAN lang="EN-US" style="color: black; font-family: '微软雅黑',sans-serif; font-size: 10.5pt;"&gt;nand: 4096MiB, MLC, page size: 8192, OOB size: 744&lt;BR /&gt;&lt;BR /&gt;gpmi-nand 1806000.gpmi-nand:&amp;nbsp; Default ecc strength(52) is beyond our capability(40). Try to use maximum ecc strength controller&lt;BR /&gt;&lt;BR /&gt; can support.&lt;BR /&gt;&lt;BR /&gt;gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5&lt;BR /&gt;&lt;BR /&gt;Bad block table found at page 524032, version 0x01&lt;BR /&gt;&lt;BR /&gt;Bad block table found at page 523776, version 0x01&lt;BR /&gt;&lt;BR /&gt;nand_read_bbt: bad block at 0x00000b400000&lt;BR /&gt;&lt;BR /&gt;nand_read_bbt: bad block at 0x00000b600000&lt;BR /&gt;&lt;BR /&gt;5 cmdlinepart partitions found on MTD device gpmi-nand&lt;BR /&gt;&lt;BR /&gt;Creating 5 MTD partitions on "gpmi-nand":&lt;BR /&gt;&lt;BR /&gt;0x000000000000-0x000000200000 : "boot"&lt;BR /&gt;&lt;BR /&gt;0x000000200000-0x000000400000 : "logo"&lt;BR /&gt;&lt;BR /&gt;0x000000400000-0x000000a00000 : "kernel"&lt;BR /&gt;&lt;BR /&gt;0x000000a00000-0x000000c00000 : "dtb"&lt;BR /&gt;&lt;BR /&gt;0x000000c00000-0x000100000000 : "rootfs"&lt;BR /&gt;&lt;BR /&gt;gpmi-nand 1806000.gpmi-nand: driver registered.&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="background-color: rgba(0, 0, 0, 0); color: black; font-size: 10.5pt; font-family: '微软雅黑',sans-serif;"&gt;mtd: opening: "/dev/mtd0"&lt;BR /&gt;&lt;BR /&gt;NFC geometry :&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; ECC Strength&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; : 40&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Page Size in Bytes : 8936&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Metadata size&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; : 10&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; ECC Chunk Size in byte : 1024&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; ECC Chunk count&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; : 8&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Block Mark Byte Offset : 7692&lt;BR /&gt;&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Block Mark Bit Offset&amp;nbsp; : 0&lt;BR /&gt;&lt;BR /&gt;====================================================&lt;BR /&gt;&lt;BR /&gt;mtd: opened '/dev/mtd0' - '(null)'&lt;BR /&gt;&lt;BR /&gt;mtd: mtd size too small&lt;BR /&gt;&lt;BR /&gt;mtd_init failed!&lt;BR /&gt;&lt;BR /&gt;UTP: sending Non-success to kernel for command $ kobs-ng init -x -v --chip_0_device_path=/dev/mtd0 $FILE.&lt;BR /&gt;&lt;BR /&gt;utp_poll: exit with status 1280&lt;BR /&gt;&lt;BR /&gt;random: nonblocking pool is initialized.&lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 18 Jul 2016 07:00:52 GMT</pubDate>
      <guid>https://community.nxp.com/t5/i-MX-Processors/i-MX6UL-%E4%BF%AE%E6%94%B9Nand-%E5%88%86%E5%8C%BA/m-p/582072#M88450</guid>
      <dc:creator>yongban</dc:creator>
      <dc:date>2016-07-18T07:00:52Z</dc:date>
    </item>
    <item>
      <title>Re: i.MX6UL 修改Nand 分区</title>
      <link>https://community.nxp.com/t5/i-MX-Processors/i-MX6UL-%E4%BF%AE%E6%94%B9Nand-%E5%88%86%E5%8C%BA/m-p/582073#M88451</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;this may help you &lt;A href="https://community.nxp.com/thread/430107"&gt;i.mx6ulevk nand too small?&lt;/A&gt; &lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 21 Jul 2016 07:55:56 GMT</pubDate>
      <guid>https://community.nxp.com/t5/i-MX-Processors/i-MX6UL-%E4%BF%AE%E6%94%B9Nand-%E5%88%86%E5%8C%BA/m-p/582073#M88451</guid>
      <dc:creator>jimmychan</dc:creator>
      <dc:date>2016-07-21T07:55:56Z</dc:date>
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