tree f24b7ce88dfdedbb3388cb3f6e4e44ee4e9f15f0
parent 8ed293416dc3d47539dd95709f2b1dc0ccfe0736
author Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> 1304459381 +0000
committer Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> 1304459381 +0000

Revert MMIO space writes on shutdown as needed

Reversible MMIO space writes now use rmmio_write*().
Reversible PCI MMIO space writes now use pci_rmmio_write*().
If a MMIO value needs to be queued for restore without writing it,
use rmmio_val*().
MMIO space writes which are one-shot (e.g. communication with some chip)
should continue to use the permanent mmio_write* variants.

Corresponding to flashrom svn r1292.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

David tested it successfully on some NM10/ICH7 platforms which switch
between SPI and LPC targets (x86 BIOS ROM vs. EC firmware ROM).

Acked-by: David Hendricks <dhendrix@google.com>