diff --git a/src/mainboard/intel/beechnutcity_crb/romstage.c b/src/mainboard/intel/beechnutcity_crb/romstage.c
index ef91b39f93..a77819955c 100644
--- a/src/mainboard/intel/beechnutcity_crb/romstage.c
+++ b/src/mainboard/intel/beechnutcity_crb/romstage.c
@@ -10,6 +10,7 @@
 #include <soc/dimm_slot.h>
 #include <soc/iio.h>
 #include <soc/romstage.h>
+#include <spi_flash.h>
 #include <static.h>
 
 #include "chip.h"
@@ -32,7 +33,10 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 			CONFIG_BMC_KCS_BASE);
 
 	/* Set BIOS regeion UPD, otherwise MTRR might set incorrectly during TempRamExit API */
-	m_cfg->BiosRegionBase = FMAP_SECTION_SI_BIOS_START;
+	struct flash_mmap_window table;
+	spi_flash_get_mmap_windows(&table);
+
+	m_cfg->BiosRegionBase = table.host_base + FMAP_SECTION_SI_BIOS_START;
 	m_cfg->BiosRegionSize = FMAP_SECTION_SI_BIOS_SIZE;
 	printk(BIOS_INFO, "BiosRegionBase is set to %x\n", mupd->FspmConfig.BiosRegionBase);
 	printk(BIOS_INFO, "BiosRegionSize is set to %x\n", mupd->FspmConfig.BiosRegionSize);