Change in coreboot[master]: mb/google/volteer: Add WiFi SAR table support for Lindar/Lillipup

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/50872 )

Change subject: mb/google/volteer: Add WiFi SAR table support for Lindar/Lillipup
......................................................................

mb/google/volteer: Add WiFi SAR table support for Lindar/Lillipup

Lindar/Lillipup uses the WIFI_SAR_ID field in FW_CONFIG to pick which
SAR table to load.

BUG=b:178302811
BRANCH=volteer
TEST=build and test no lindar/lillipup

Signed-off-by: Kevin Chang 
Change-Id: Ibe829062033ba8246b9d9550cdcdc360f5f67dd3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50872
Tested-by: build bot (Jenkins) 
Reviewed-by: Tim Wawrzynczak 
Reviewed-by: YH Lin 
---
M src/mainboard/google/volteer/variants/lindar/Makefile.inc
A src/mainboard/google/volteer/variants/lindar/variant.c
2 files changed, 18 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  YH Lin: Looks good to me, but someone else must approve
  Tim Wawrzynczak: Looks good to me, approved

diff --git a/src/mainboard/google/volteer/variants/lindar/Makefile.inc b/src/mainboard/google/volteer/variants/lindar/Makefile.inc
index b0bfc56..22bcbd7 100644
--- a/src/mainboard/google/volteer/variants/lindar/Makefile.inc
+++ b/src/mainboard/google/volteer/variants/lindar/Makefile.inc
@@ -5,3 +5,5 @@
 romstage-y += memory.c

ramstage-y += gpio.c
+
+ramstage-$(CONFIG_FW_CONFIG) += variant.c
diff --git a/src/mainboard/google/volteer/variants/lindar/variant.c b/src/mainboard/google/volteer/variants/lindar/variant.c
new file mode 100644
index 0000000..b8d7165
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/lindar/variant.c
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <fw_config.h>
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	const char *filename = NULL;
+
+	if (fw_config_probe(FW_CONFIG(WIFI_SAR_ID, WIFI_SAR_ID_0)))
+		filename = "wifi_sar_0.hex";
+	else if (fw_config_probe(FW_CONFIG(WIFI_SAR_ID, WIFI_SAR_ID_1)))
+		filename = "wifi_sar_1.hex";
+
+	return filename;
+}