i.MX ProcessorsのトピックHow to boot imx25 with NAND https://community.nxp.com/t5/i-MX-Processors/How-to-boot-imx25-with-NAND/m-p/233541#M18095 <HTML><HEAD></HEAD><BODY><P>Hi, All</P><P></P><P>Is it possible to boot imx25 directly with NAND. If it's possible how to write a XLDR or if the XLDR is available.</P><P></P><P>The so called directly booting means:</P><P>(1) BOOT_MODE[1:0] = 2'b10</P><P>(2) BT_MEM_CTL[1:0] = 2'b01&nbsp;&nbsp;&nbsp; // -&gt; NandFlash</P><P>(3) eFuse is NOT blown.</P><P></P><P>The internal boot (with NAND of course) is now used in my design, which takes about 220ms to go to my initial code after power-up. It's required to reduce the booting time. Is it possible to reduce the booting time by using external (direct) booting with NAND?</P><P></P><P>It's appreciated for any comments</P><P></P><P>BR</P><P></P><P>Cheng Shi</P><P><A href="http://www.emtronix.com/">www.emtronix.com</A></P></BODY></HTML> Thu, 21 Mar 2013 09:40:14 GMT x10 2013-03-21T09:40:14Z How to boot imx25 with NAND https://community.nxp.com/t5/i-MX-Processors/How-to-boot-imx25-with-NAND/m-p/233541#M18095 <HTML><HEAD></HEAD><BODY><P>Hi, All</P><P></P><P>Is it possible to boot imx25 directly with NAND. If it's possible how to write a XLDR or if the XLDR is available.</P><P></P><P>The so called directly booting means:</P><P>(1) BOOT_MODE[1:0] = 2'b10</P><P>(2) BT_MEM_CTL[1:0] = 2'b01&nbsp;&nbsp;&nbsp; // -&gt; NandFlash</P><P>(3) eFuse is NOT blown.</P><P></P><P>The internal boot (with NAND of course) is now used in my design, which takes about 220ms to go to my initial code after power-up. It's required to reduce the booting time. Is it possible to reduce the booting time by using external (direct) booting with NAND?</P><P></P><P>It's appreciated for any comments</P><P></P><P>BR</P><P></P><P>Cheng Shi</P><P><A href="http://www.emtronix.com/">www.emtronix.com</A></P></BODY></HTML> Thu, 21 Mar 2013 09:40:14 GMT https://community.nxp.com/t5/i-MX-Processors/How-to-boot-imx25-with-NAND/m-p/233541#M18095 x10 2013-03-21T09:40:14Z Re: How to boot imx25 with NAND https://community.nxp.com/t5/i-MX-Processors/How-to-boot-imx25-with-NAND/m-p/233542#M18096 <HTML><HEAD></HEAD><BODY><P>The i.MX25PDK can boot from NAND. You can take it as your reference.</P><P>You can download all the information from this web page.</P><P><A href="http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=IMX25PDK">http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=IMX25PDK</A></P></BODY></HTML> Fri, 29 Mar 2013 03:45:00 GMT https://community.nxp.com/t5/i-MX-Processors/How-to-boot-imx25-with-NAND/m-p/233542#M18096 jimmychan 2013-03-29T03:45:00Z