Re: [PATCH] early printk for x86

[Andi Kleen]

On Thu, Nov 14, 2002 at 02:50:43PM -0800, Dave Hansen wrote:
> Jeff Garzik wrote:
> >VGA and serial are certainly not hammer+ia32-specific.  Make the generic 
> >parts generic...   the arch-specific components would need to change 
> >early-foo base addresses perhaps, but otherwise, it's pretty generic.
> 
> Take 2.
> 
> - Move the x86_64 early_printk.c into kernel/
> - move some of the basic defines into linux/early_printk.h and
>   asm-{i386,x86_64}/early_printk.h
> - run the setup in start_kernel() before setup_arch()

That's overkill. Most architectures have an early_printk equivalent in 
firmware. Only i386 and x86-64 are not lucky enough to have one 
that is usable from the CPU mode linux uses.

-Andi