Hi, On Wed, 16 Mar 2005 11:33:39 -0500 (EST), Robert P. J. Day <rpjday at mindspring.com> wrote: > currently, the system i've built for our 850 board incorporates > > - boot loader (sadly, not u-boot, but i'm working on it) > - standard zImage.initrd.bin kernel+initrd image > ... mountable JFFS2 filesystem with persistent stuff ... > > obviously, with this layout, it's kind of a nuisance to update > anything individually in the initrd portion of the system, so i'd like > to at least experiment with a layout that has separate > > - boot loader (ideally, u-boot) > - kernel image > - updateable (normally mounted read-only?) root filesystem > ... rest of stuff the same ...
I'm using separate MTD partitions for bootloader, device parameters, zImage, initrd and persistent storage. When updating the initrd, the only thing necessary is a eraseall /dev/mtdX cat initrd.gz > /dev/mtdX When booting the kernel, you need something like this in the commandline: root=/dev/mtdblockX prompt_ramdisk=0 load_ramdisk=1 ramdisk_size=8192 This is bootloader independent, of course. HTH, Patrick
