From mboxrd@z Thu Jan 1 00:00:00 1970 From: jiale.Yin Date: Mon, 19 May 2008 20:13:39 +0800 Subject: [U-Boot-Users] Boot from NAND FLASH References: <200805161454272032219@gmail.com>, <20080516191747.GA2777@loki.buserror.net> Message-ID: <200805192013359849581@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Thank you for your answer. But as you said in the letter, "NOR can be mapped in its entirety, while with NAND only the first 4KiB gets mapped, and that code has to fetch the rest of u-boot from NAND and copy it to RAM before continuing." Why did you also mentioned that there is no need to modify the start.s, isn't there any difference between booting from NOR and NAND for start.s? 2008-05-19 jiale.Yin ???? Scott Wood ????? 2008-05-17 03:16:52 ???? jiale.Yin ??? u-boot-users ??? Re: [U-Boot-Users] Boot from NAND FLASH On Fri, May 16, 2008 at 02:54:34PM +0800, jiale.Yin wrote: > Our board is reference with the mpc8313erdb,and its design is to link CS0 > to the NAND FLASH, so I have to boot from NAND other than NOR.In > /board/mpc8313erdb I can find some files, such as nand_boot.c, nand.c and > nand_ecc.c, I assume you're talking about the Freescale BSP, as those files are not in mainline u-boot. > which I think are related with booting from NAND.What I want > to know is if booting from NAND,is there any need to modify the start.s No, beyond what's already been changed in the BSP to support it. Make sure you use a NAND configuration when building u-boot. > and what is needed to ba added. What's the difference between NOR-BOOT and > NAND-BOOT. Thank you! NOR can be mapped in its entirety, while with NAND only the first 4KiB gets mapped, and that code has to fetch the rest of u-boot from NAND and copy it to RAM before continuing. -Scott -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.denx.de/pipermail/u-boot/attachments/20080519/ed2a4dcb/attachment.htm -------------- next part -------------- A non-text attachment was scrubbed... Name: jiale Yin.vcf Type: text/x-vcard Size: 2162 bytes Desc: not available Url : http://lists.denx.de/pipermail/u-boot/attachments/20080519/ed2a4dcb/attachment.vcf -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 1476 bytes Desc: not available Url : http://lists.denx.de/pipermail/u-boot/attachments/20080519/ed2a4dcb/attachment.bin