nb/intel/x4x/raminit: Change reset type on incomplete raminit reset
commit8565c03caf6ea505e3542be01a2cc9b532449728
authorArthur Heymans <arthur@aheymans.xyz>
Sun, 30 Apr 2017 15:36:31 +0000 (30 17:36 +0200)
committerArthur Heymans <arthur@aheymans.xyz>
Thu, 4 May 2017 07:31:26 +0000 (4 09:31 +0200)
treec6dcc20995e5577f072392c96566a9571168dde4
parenteae521f9136aff255fa71712c0a145cdfcea358d
nb/intel/x4x/raminit: Change reset type on incomplete raminit reset

The checkreset() function checks if raminit previously
succeeded (pmcon2 bit7 == 0). If this is not the case it will issue a
hot reset (writing 0x6 to 0xcf9). On the next attempt to boot the
system BOOT_PATH_RESET path will be taken. This boot path can only
successfully initialize memory if the system was reset from a state
where raminit succeeded, which is not the case here.

This can be fixed by issuing a cold reset instead of a hot reset.

Change-Id: Idbcf034c3777a64cc3fb92dc603d10470a6c8cb6
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19506
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
src/northbridge/intel/x4x/raminit.c