On Mon, Nov 19, 2018 at 10:44:30AM -0800, Florian Fainelli wrote: > On 11/15/18 5:16 PM, Guenter Roeck wrote: > > On Thu, Nov 15, 2018 at 11:48:20AM -0800, Florian Fainelli wrote: > >> > >> OK, would you mind testing this below? It seems to me that 8250_of.c is > >> incompatible with arch/powerpc/kernel/legacy_serial.c and that is what > >> is causing the issue here. > >> > >> diff --git a/drivers/tty/serial/8250/Kconfig > >> b/drivers/tty/serial/8250/Kconfig > >> index d7737dca0e48..21cb14cbd34a 100644 > >> --- a/drivers/tty/serial/8250/Kconfig > >> +++ b/drivers/tty/serial/8250/Kconfig > >> @@ -483,7 +483,7 @@ config SERIAL_8250_PXA > >> > >> config SERIAL_OF_PLATFORM > >> tristate "Devicetree based probing for 8250 ports" > >> - depends on SERIAL_8250 && OF > >> + depends on SERIAL_8250 && OF && !(PPC && PPC_UDBG_16550) > >> default SERIAL_8250 > >> help > >> This option is used for all 8250 compatible serial ports that > > > > 44x/virtex5_defconfig has both PPC_UDBG_16550 and SERIAL_OF_PLATFORM enabled > > and fails to boot (or display anything on the console) with this patch > > applied. > > Thanks for trying, can you either share or provide a link to the mpc85xx > and ml507 qemu command lines that you use? I spent a good chunk of my > time trying to get a kernel to boot but has failed so far. >
Good to hear that this doesn't just happen to me ;-). The scripts are all at https://github.com/groeck/linux-build-test/. This includes root file systems. The one used below is at https://github.com/groeck/linux-build-test/blob/master/rootfs/ppc/rootfs.cpio.gz ml507: qemu-system-ppc -kernel vmlinux -M virtex-ml507 -m 256 -no-reboot \ -initrd rootfs.cpio -dtb arch/powerpc/boot/dts/virtex440-ml507.dtb \ --append 'rdinit=/sbin/init panic=-1 mem=256M console=ttyS0' \ -monitor none -nographic mpc85xx: qemu-system-ppc -kernel arch/powerpc/boot/uImage -M mpc8544ds -m 256 \ -no-reboot -initrd rootfs.cpio \ --append 'rdinit=/sbin/init panic=-1 mem=256M console=ttyS0' \ -monitor none -nographic Hope this helps, Guenter
