On Fri, Aug 10, 2012 at 8:26 PM, Scott Wood <scottw...@freescale.com> wrote: > On 08/08/2012 04:33 PM, Bill wrote: >> All, >> >> I'm needing the ability to upgrade the kernel and root-filesystem on >> the NAND chip on the imx28evk from new files that reside on a USB memory >> stick. That is I want to partition the NAND (mtd) into 3 sections that >> contain u-boot, kernel, rootfs. Then whenever the system is booted, >> u-boot will probe the USB memory stick (using fatls and looking for a >> kernel file and rootfs file) If the files exist on the USB memory >> stick, uboot will automatically (first it will verify a CRC/Checksum) >> erase the kernel and rootfs sections on the NAND chip, and then copy the >> new kernel and rootfs from the USB stick to their respective sections in >> the flash chip (I think using fatload)?. It will never write a new u-boot. >> >> I've also seen where u-boot can define the NAND flash partitions >> using the mtdparts command and pass these along to the kernel via >> command line args? >> >> Can u-boot write/erase to a nand partition (i.e. /dev/mtd0) instead >> of using absolute memory addresses? > > If you use U-Boot's mtdparts support, you can reference partitions by > name (mtdparts name, not Linux device node name) in NAND commands.
Maybe https://github.com/otavio/u-boot/commit/7ccde26310719a9caef4cbe23bdf080d49d41791 might help? -- Otavio Salvador O.S. Systems E-mail: ota...@ossystems.com.br http://www.ossystems.com.br Mobile: +55 53 9981-7854 http://projetos.ossystems.com.br _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
