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>

1 files changed, 12 insertions, 0 deletions

diff --git a/programmer.h b/programmer.h
index 7698ef05..cd5d584c 100644
--- a/programmer.h
+++ b/programmer.h
@@ -316,6 +316,18 @@ uint32_t mmio_le_readl(void *addr);
 #define pci_mmio_readb mmio_le_readb
 #define pci_mmio_readw mmio_le_readw
 #define pci_mmio_readl mmio_le_readl
+void rmmio_writeb(uint8_t val, void *addr);
+void rmmio_writew(uint16_t val, void *addr);
+void rmmio_writel(uint32_t val, void *addr);
+void rmmio_le_writeb(uint8_t val, void *addr);
+void rmmio_le_writew(uint16_t val, void *addr);
+void rmmio_le_writel(uint32_t val, void *addr);
+#define pci_rmmio_writeb rmmio_le_writeb
+#define pci_rmmio_writew rmmio_le_writew
+#define pci_rmmio_writel rmmio_le_writel
+void rmmio_valb(void *addr);
+void rmmio_valw(void *addr);
+void rmmio_vall(void *addr);
 
 /* programmer.c */
 int noop_shutdown(void);