[PATCH v2 1/6] powerpc: Add hardware description string

[Michael Ellerman]

Michael Ellerman <mpe at ellerman.id.au> writes:
> Create a hardware description string, which we will use to record
> various details of the hardware platform we are running on.
>
> Print the accumulated description at boot, and use it to set the generic
> description which is printed in oopses.
>
> To begin with add ppc_md.name, aka the "machine description".
>
> Example output at boot with the full series applied:
>
>   Linux version 6.0.0-rc2-gcc-11.1.0-00199-g893f9007a5ce-dirty (michael at alpine1-p1) (powerpc64-linux-gcc (GCC) 11.1.0, GNU ld (GNU Binutils) 2.36.1) #844 SMP Thu Sep 29 22:29:53 AEST 2022
>   Hardware name: model:'IBM pSeries (emulated by qemu)' cpu:'POWER8 (raw)' pvr:0x4d0200 lpvr:0xf000004 of:'SLOF,HEAD' machine:pSeries
>   printk: bootconsole [udbg0] enabled
>
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> ---
>  arch/powerpc/include/asm/setup.h   |  2 ++
>  arch/powerpc/kernel/setup-common.c | 19 ++++++++++++++++++-
>  2 files changed, 20 insertions(+), 1 deletion(-)
>
> v2: Print the string at boot as suggested by Nathan.
>     Add some comments, update change log.

Ugh, I managed to bork the patches when sending. Don't send patches at
midnight.

New version coming.

cheers