Yes thanks Liu, I am using this toolchain gcc-4.1.78-eglibc-2.5.78-dp-1 from the freescale ltib for 8548cds which I guess needs to be fixed for these mnemonics. Your patch works fine. Also, I see all your e500 patches in the qemu git tree now (just created a new tree). I am able to build directly without applying your patches by hand. Still don't see the guest console when I telnet to the boardip/port. Also tried without the console command line arg while starting qemu, tried to launch without console and without any -serial tcp::4444,server but no luck . Just get the qemu command prompt but nothing on the telnet session Tried toggling ctrl-alt-f/ctr-alt-n etc.. Any other tips on this? I'd appreciate your help Thanks, rahul (qemu) q /bin # ./qemu-system-ppcemb -enable-kvm -m 64 -nographic -M mpc8544ds -kernel / tmp/uImage.8544 -initrd /tmp/rootfs.ext2.gz.small -L /usr/local/share/qemu -app end "root=/dev/ram rw console=ttyS0,115200" -serial tcp::4444,server QEMU waiting for connection on: tcp:0.0.0.0:4444,server (qemu) QEMU 0.10.0 monitor - type 'help' for more information (qemu) info kvm kvm support: enabled (qemu) info status VM status: running /bin # ./qemu-system-ppcemb -enable-kvm -m 64 -nographic -M mpc8544ds -kernel / tmp/uImage.8544 -initrd /tmp/rootfs.ext2.gz.small -L /usr/local/share/qemu -app end "root=/dev/ram rw" -serial tcp::4444,server QEMU waiting for connection on: tcp:0.0.0.0:4444,server -----Original Message----- From: Liu Yu-B13201 [mailto:Yu.Liu@xxxxxxxxxxxxx] Sent: Tuesday, March 17, 2009 12:36 AM To: Rahul Kulkarni; Hollis Blanchard Cc: kvm-ppc@xxxxxxxxxxxxxxx Subject: RE: qemu ppcemb illegal instruction Rahul, My toolchain(4.3.74-dp-2) interpret mftbl/u to mfspr, that's why the code can work in my environment. Could you try the patch in the attacthment? Btw: have you found the e500 commit in upstream qemu git tree? Hollis, As mftbl/u are consider as mnemonics of mfspr, I think it's more like a toolchain problem. Do we need to fix this? Best Regards. Yu > -----Original Message----- > From: Rahul Kulkarni [mailto:rkulkarn@xxxxxxxxxxxxxxxxxxx] > Sent: Tuesday, March 17, 2009 8:19 AM > To: Hollis Blanchard; Liu Yu-B13201 > Cc: kvm-ppc@xxxxxxxxxxxxxxx > Subject: qemu ppcemb illegal instruction > > Hi Liu, > > I could trace the illegal instruction during qemu startup > down to this function in cpu-all.h cpu_get_real_ticks(void) > which is using the time base registers - the crash is during > vm_start - cpu_enable_ticks which calls cpu_get_real_ticks. > > I believe e500 is using SPR's for this purpose and not > dedicated time base registers - am I missing a patch to this file? > > This is what I have in cpu_get_real_ticks - ( _ARCH_PPC is > defined and not ARCH_PPC64) > > __asm__ __volatile__ ( > "mftbu %1\n\t" > "mftb %L0\n\t" > "mftbu %0\n\t" > "cmpw %0,%1\n\t" > "bne $-16" > : "=r" (retval), "=r" (junk)); > > > I did try to short circuit this by borrowing this from the > code below to see if I can avoid the crash which I could do so - > > static int64_t ticks = 0; > return ticks++ > > qemu does boot up and goes to the qemu prompt when I telnet > to the boardip/port but I don't seem to get any login prompt > for the VM - bear with me..but I am fiddling with this - > sending this out anyway for suggestions.. > > On my 8548 CDS board > /bin # ./qemu-system-ppcemb -enable-kvm -m 64 -nographic -M > mpc8544ds -kernel /tmp/uImage.8544 -initrd > /tmp/rootfs.ext2.gz.small -L /usr/local/share/qemu -append > "root=/dev/ram rw console=ttyS0,115200" -serial tcp::4444,server > > << goes to qemu prompt when I telnet to board ip / port >> > > (qemu) > (qemu) info version > 0.9.1 > (qemu) info network > VLAN 0 devices: > user.0: > virtio.0: model=virtio,macaddr=52:54:00:12:34:56 > (qemu) info kvm > kvm support: enabled > (qemu) info status > VM status: running > > > On the telnet session: > $ telnet 10.11.224.180 4444 > Trying 10.11.224.180... > Connected to 10.11.224.180 (10.11.224.180). > Escape character is '^]'. > > << nothing here >> > > > i'd appreciate your reply.. > > Thanks, Rahul > > -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
