On Fri, Sep 5, 2014 at 9:09 PM, Robert P. J. Day <[email protected]> wrote: > > i'm perusing the openwrt QEMU page here: > > http://wiki.openwrt.org/doc/howto/qemu > > so i thought i'd test a couple of the architectures with images > downloaded from the 14.07-rc3 directory. all this is being done on a > 64-bit fedora rawhide system with the appropriate qemu-system-* > packages installed. so here's where i'm getting the images from: > > https://downloads.openwrt.org/barrier_breaker/14.07-rc3/... > > first, MIPS, where i tried to boot just the kernel image: > > $ qemu-system-mipsel -kernel openwrt-malta-le-vmlinux.elf -nographic -m 256 > [ 0.000000] Linux version 3.10.49 (bb@builder1) (gcc version 4.8.3 > (OpenWrt/Linaro GCC 4.8-2014.04 r41989) ) #1 SMP Fri Aug 8 02:50:38 > CEST 2014 > [ 0.000000] Config serial console: console=ttyS0,38400n8r > [ 0.000000] bootconsole [early0] enabled > [ 0.000000] CPU revision is: 00019300 (MIPS 24Kc) > [ 0.000000] FPU revision is: 00739300 > ... snip ... > [ 0.560000] VFS: Cannot open root device "(null)" or unknown-block(0,0): > error -6 > [ 0.560000] Please append a correct "root=" boot option; here are the > available partitions: > [ 0.570000] 1f00 1024 mtdblock0 (driver?) > [ 0.570000] 1f01 2944 mtdblock1 (driver?) > [ 0.570000] 1f02 128 mtdblock2 (driver?) > [ 0.570000] Kernel panic - not syncing: VFS: Unable to mount root fs on > unknown-block(0,0) > > which is, of course, exactly what i expected -- choke on a lack of > rootfs, so that looks good. > > now try with initramfs, which doesn't work so well: > > $ qemu-system-mipsel -kernel openwrt-malta-le-vmlinux-initramfs.elf > -nographic -m 256 > ... snip ... > [ 0.710000] Freeing YAMON memory: 956k freed > [ 0.720000] Freeing unused kernel memory: 4940K (8045d000 - 80930000) > [ 0.760000] Kernel panic - not syncing: Attempted to kill init! > exitcode=0x00000004 > [ 0.760000] > > should i have expected that? it is precisely the command on the > openwrt QEMU page that is implied to work.
Qemu 1.6+ has broken mips16 support, which is why init gets killed. You need to either use an old qemu version (1.5 or older), compile your own with the fix applied, or wait for a new qemu release containing the fix. See <https://dev.openwrt.org/ticket/16881> for reference. Jonas _______________________________________________ openwrt-users mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-users
