On Wed, Aug 22, 2012 at 12:22 PM, Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx> wrote: > On Wed, Aug 22, 2012 at 12:20 PM, Jessica Allison > <jessica.allison.2012@xxxxxxxxxxx> wrote: >> >> >>> Date: Wed, 22 Aug 2012 11:24:11 -0400 >>> Subject: Re: Working rootfs to load host file system from RAM >>> From: c.dall@xxxxxxxxxxxxxxxxxxxxxx >>> To: jessica.allison.2012@xxxxxxxxxxx >>> CC: kvmarm@xxxxxxxxxxxxxxxxxxxxx >>> >>> On Wed, Aug 22, 2012 at 11:10 AM, Jessica Allison >>> <jessica.allison.2012@xxxxxxxxxxx> wrote: >>> > Has anyone got a working rootfs that I can boot from directly on the ARM >>> > Fast Model simulator? I'm not talking about one for the guest but one >>> > for >>> > the host. >>> > >>> > I can properly boot the system in the simulator from NFS, but when I try >>> > to >>> > build an initramfs from my NFS filesystem and attach that to the >>> > simulator >>> > with --initrd xxx then the kernel seems to hang after having extracted >>> > the >>> > initramfs and then freed the memory - it stops doing anything after >>> > saying >>> > "Freeing init memory". >>> > >>> > I have created the initramfs by just doing a >>> > >>> > find ./ | cpio -o -H newc | gzip > ./initrd.cpio.gz >>> > >>> > in the directory which is my NFS filesystem. Isn't that sufficient? >>> > >>> > Btw I have also tried to build the initramfs into the kernel by >>> > configuring >>> > CONFIG_INITRAMFS_SOURCE=xxx - however, then what happened is that when >>> > the >>> > system booted it only said "error uncompressing kernel" right at the >>> > start. >>> > >>> For your host system you should be fine with NFS. >>> >>> For the guest you need something really simple if it's not going to be >>> too big, try with this one: >>> http://www.cs.columbia.edu/~cdall/initrd.img >> >> >> What format is this initramfs and how can I modify it? It doesn't seem to be >> a cpio.gz? >> > it most certainly is. > just tested: gzip -d -c initrd.img | cpio -i works just fine _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
