i82801gx: Enable upper CMOS in bootblock.
Otherwise checksum may not work correctly on early stages.
For compatibility with old bootblocks also enable it early in romstage.
Change-Id: Ie541d71bd76af182e445aa5ef21fe5ba77091159
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7556
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/northbridge/intel/i945/early_init.c b/src/northbridge/intel/i945/early_init.c
index 08ffdf6..b12ad3a 100644
--- a/src/northbridge/intel/i945/early_init.c
+++ b/src/northbridge/intel/i945/early_init.c
@@ -171,6 +171,9 @@
outw((1 << 11), DEFAULT_PMBASE | 0x60 | 0x08); /* halt timer */
printk(BIOS_DEBUG, " done.\n");
+ /* Enable upper 128bytes of CMOS */
+ RCBA32(0x3400) = (1 << 2);
+
printk(BIOS_DEBUG, "Setting up static northbridge registers...");
/* Set up all hardcoded northbridge BARs */
pci_write_config32(PCI_DEV(0, 0x00, 0), EPBAR, DEFAULT_EPBAR | 1);