[RFC] arm: Defer lookup of machine_type and vet of atags to setup.c

On Mon, 10 Jan 2011, Grant Likely wrote:

Since the debug macros no longer depend on the machine type
information, both the machine type lookup and the atags vetting can be
deferred to setup_arch() in setup.c which simplifies the code
somewhat.

This patch removes both __machine_type_lookup and __vet_atags() from
head.S.  The atags vetting is moved to setup_arch().  machine_type
lookup is already called from setup_machine() in addition to where it
was called from head.S.

While at it, you could also remove the code for __lookup_machine_type, 
lookup_machine_type and __error_a, replacing that with a C 
implementation living in setup.c instead.  If this code is not called 
from head.S anymore, there is no reason to keep it there any longer.


Nicolas