[coreboot-gerrit] Change in coreboot[master]: mb/google/volteer: Implement weak function `cse_board_reset`

[Tim Wawrzynczak (Code Review)]

Tim Wawrzynczak has submitted this change. ( https://review.coreboot.org/c/coreboot/+/44536 )

Change subject: mb/google/volteer: Implement weak function `cse_board_reset`
......................................................................

mb/google/volteer: Implement weak function `cse_board_reset`

Since Volteer also uses the CSE Lite SKU and the cr50, it is subject
to a problem where old cr50 FW will not be able to properly detect an
SoC reset, so the reset on cold boots caused by the CSE Lite RO->RW
jump should instead get an assist from the EC, which can perform a
full cold reset.

BUG=b:162977697
TEST=Verify EC performs the cold reset

Signed-off-by: Tim Wawrzynczak 
Change-Id: Ie8ae21c203da218459d5fd30a23be23520ed0598
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44536
Tested-by: build bot (Jenkins) 
Reviewed-by: Caveh Jalali 
Reviewed-by: Karthik Ramasubramanian 
---
M src/mainboard/google/volteer/mainboard.c
1 file changed, 8 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Caveh Jalali: Looks good to me, approved
  Karthik Ramasubramanian: Looks good to me, approved

diff --git a/src/mainboard/google/volteer/mainboard.c b/src/mainboard/google/volteer/mainboard.c
index 5317c11..a926673 100644
--- a/src/mainboard/google/volteer/mainboard.c
+++ b/src/mainboard/google/volteer/mainboard.c
@@ -6,10 +6,18 @@
 #include <device/device.h>
 #include <ec/ec.h>
 #include <ec/google/chromeec/ec.h>
+#include <halt.h>
+#include <intelblocks/cse.h>
 #include <soc/gpio.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 #include <variant/gpio.h>

+void cse_board_reset(void)
+{
+	if (!google_chromeec_ap_reset())
+		halt();
+}
+
 static void mainboard_init(struct device *dev)
 {
    mainboard_ec_init();