Re: [PATCH v5 01/13] powerpc: Remove Xilinx PPC405/PPC440 support
From: Nick Desaulniers
Date: Wed Jun 17 2020 - 14:16:57 EST
On Wed, Jun 17, 2020 at 3:20 AM Michael Ellerman <mpe@xxxxxxxxxxxxxx> wrote:
>
> Michael Ellerman <mpe@xxxxxxxxxxxxxx> writes:
> > Michal Simek <michal.simek@xxxxxxxxxx> writes:
> <snip>
>
> >> Or if bamboo requires uImage to be built by default you can do it via
> >> Kconfig.
> >>
> >> diff --git a/arch/powerpc/platforms/44x/Kconfig
> >> b/arch/powerpc/platforms/44x/Kconfig
> >> index 39e93d23fb38..300864d7b8c9 100644
> >> --- a/arch/powerpc/platforms/44x/Kconfig
> >> +++ b/arch/powerpc/platforms/44x/Kconfig
> >> @@ -13,6 +13,7 @@ config BAMBOO
> >> select PPC44x_SIMPLE
> >> select 440EP
> >> select FORCE_PCI
> >> + select DEFAULT_UIMAGE
> >> help
> >> This option enables support for the IBM PPC440EP evaluation board.
> >
> > Who knows what the actual bamboo board used. But I'd be happy to take a
> > SOB'ed patch to do the above, because these days the qemu emulation is
> > much more likely to be used than the actual board.
>
> I just went to see why my CI boot of 44x didn't catch this, and it's
> because I don't use the uImage, I just boot the vmlinux directly:
>
> $ qemu-system-ppc -M bamboo -m 128m -display none -kernel build~/vmlinux -append "console=ttyS0" -display none -nodefaults -serial mon:stdio
> Linux version 5.8.0-rc1-00118-g69119673bd50 (michael@alpine1-p1) (gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #4 Wed Jun 17 20:19:22 AEST 2020
> Using PowerPC 44x Platform machine description
> ioremap() called early from find_legacy_serial_ports+0x690/0x770. Use early_ioremap() instead
> printk: bootconsole [udbg0] enabled
>
>
> So that's probably the simplest solution?
If the uImage or zImage self decompresses, I would prefer to test that as well.
> That means previously arch/powerpc/boot/zImage was just a hardlink to
> the uImage:
It sounds like we can just boot the zImage, or is that no longer
created with the uImage?
--
Thanks,
~Nick Desaulniers