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. -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
