diff --git a/src/mainboard/google/brya/Kconfig b/src/mainboard/google/brya/Kconfig
index a1ae043..008ebb3 100644
--- a/src/mainboard/google/brya/Kconfig
+++ b/src/mainboard/google/brya/Kconfig
@@ -550,6 +550,7 @@
 
 config BOARD_GOOGLE_XOL
 	select BOARD_GOOGLE_BASEBOARD_BRYA
+	select CHROMEOS_WIFI_SAR if CHROMEOS
 	select DRIVERS_I2C_DA7219
 	select DRIVERS_INTEL_ISH
 	select SOC_INTEL_RAPTORLAKE
diff --git a/src/mainboard/google/brya/variants/xol/Makefile.mk b/src/mainboard/google/brya/variants/xol/Makefile.mk
index c346b0a..d85ce1b 100644
--- a/src/mainboard/google/brya/variants/xol/Makefile.mk
+++ b/src/mainboard/google/brya/variants/xol/Makefile.mk
@@ -4,3 +4,4 @@
 romstage-y += memory.c
 ramstage-y += gpio.c
 ramstage-y += ramstage.c
+ramstage-$(CONFIG_FW_CONFIG) += variant.c
diff --git a/src/mainboard/google/brya/variants/xol/overridetree.cb b/src/mainboard/google/brya/variants/xol/overridetree.cb
index e1568f5..d73702c 100644
--- a/src/mainboard/google/brya/variants/xol/overridetree.cb
+++ b/src/mainboard/google/brya/variants/xol/overridetree.cb
@@ -3,6 +3,10 @@
 		option STORAGE_UFS			0
 		option STORAGE_NVME			1
 	end
+	field WIFI_SAR_ID 31
+		option WIFI_SAR_ID_0			0
+		option WIFI_SAR_ID_1			1
+	end
 end
 
 chip soc/intel/alderlake
diff --git a/src/mainboard/google/brya/variants/xol/variant.c b/src/mainboard/google/brya/variants/xol/variant.c
new file mode 100644
index 0000000..26ced21
--- /dev/null
+++ b/src/mainboard/google/brya/variants/xol/variant.c
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <baseboard/variants.h>
+#include <chip.h>
+#include <fw_config.h>
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	return "wifi_sar_0.hex";
+}