diff --git a/src/southbridge/intel/i82371eb/bootblock.c b/src/southbridge/intel/i82371eb/bootblock.c
index 711b317..581db81 100644
--- a/src/southbridge/intel/i82371eb/bootblock.c
+++ b/src/southbridge/intel/i82371eb/bootblock.c
@@ -61,4 +61,7 @@
 	reg16 |= LOWER_BIOS_ENABLE | EXT_BIOS_ENABLE | EXT_BIOS_ENABLE_1MB;
 	reg16 &= ~(WRITE_PROTECT_ENABLE);	/* Disable ROM write access. */
 	pci_write_config16(dev, XBCS, reg16);
+
+	/* Enable (RTC and) upper NVRAM bank. */
+	pci_write_config8(dev, RTCCFG, RTC_POS_DECODE | UPPER_RAM_EN | RTC_ENABLE);
 }