soc/amd/stoneyridge: Create a HALT_THIS_AP callout

It was required for all cores use the same CAR teardown function
(exit_car.S and gcccar.inc). AGESA has already been modified to do the
AP to do the call out. Create assembly code to call chipset_teardown_car
and then enter an endless loop with halt instruction. Then create the
call out that will call this new assembly code.

BUG=b:70338633
AGESA COMMIT=3313d277
TEST=Created a debug version of AGESA that would print the returned
status of HALT_THIS_AP. Build code without the fix, see the return.
Build code with the fix, see that there's no return.

Change-Id: I05ee405812211d93dfdbdc5ee7d9978c2eb585e1
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/24999
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/soc/amd/common/block/pi/def_callouts.c b/src/soc/amd/common/block/pi/def_callouts.c
index c05d4de8cc..beb2d18c2e 100644
--- a/src/soc/amd/common/block/pi/def_callouts.c
+++ b/src/soc/amd/common/block/pi/def_callouts.c
@@ -29,6 +29,7 @@
 const BIOS_CALLOUT_STRUCT BiosCallouts[] = {
 	{ AGESA_DO_RESET,                 agesa_Reset },
 	{ AGESA_FCH_OEM_CALLOUT,          agesa_fch_initreset },
+	{ AGESA_HALT_THIS_AP,             agesa_HaltThisAp },
 	{ AGESA_GNB_PCIE_SLOT_RESET,      agesa_PcieSlotResetControl }
 };
 #else