3 files changed, 24 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/craask/Makefile.inc b/src/mainboard/google/brya/variants/craask/Makefile.inc
index 8ae0e3b61c..86ba20d3c3 100644
--- a/src/mainboard/google/brya/variants/craask/Makefile.inc
+++ b/src/mainboard/google/brya/variants/craask/Makefile.inc
@@ -4,4 +4,5 @@ bootblock-y += gpio.c
 romstage-y += gpio.c
 
 ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
+ramstage-$(CONFIG_FW_CONFIG) += variant.c
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/craask/overridetree.cb b/src/mainboard/google/brya/variants/craask/overridetree.cb
index ebf8c30d70..fa79d8b569 100644
--- a/src/mainboard/google/brya/variants/craask/overridetree.cb
+++ b/src/mainboard/google/brya/variants/craask/overridetree.cb
@@ -20,6 +20,10 @@ fw_config
 	field AMP 6 7
 		option AMP_MX98360A		0
 	end
+	field WIFI_SAR_ID 13 15
+		option ID_0			0
+		option UNUSED			7
+	end
 	field CODEC 32 33
 		option CODEC_ALC5682I_VS	0
 		option CODEC_NAU8825		1
diff --git a/src/mainboard/google/brya/variants/craask/variant.c b/src/mainboard/google/brya/variants/craask/variant.c
new file mode 100644
index 0000000000..689a59a8a6
--- /dev/null
+++ b/src/mainboard/google/brya/variants/craask/variant.c
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <fw_config.h>
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	if (fw_config_probe(FW_CONFIG(WIFI_SAR_ID, ID_0))) {
+		printk(BIOS_INFO, "Use wifi_sar_0.hex.\n");
+		return "wifi_sar_0.hex";
+	}
+
+	else if (fw_config_probe(FW_CONFIG(WIFI_SAR_ID, UNUSED))) {
+		printk(BIOS_INFO, "Wi-Fi SAR not used, return NULL!\n");
+	}
+
+	return NULL;
+}