drivers/intel/fsp2_0: Do AP re-init after FSP-S if USE_INTEL_FSP_MP_INIT enable
This patch ensures that coreboot is able to take control of APs back
by doing a full AP re-initialization after FSP-S is done.
TEST=Able to see all cores available after booting to OS using below command
when coreboot is built with USE_INTEL_FSP_MP_INIT enable.
> cat /proc/cpuinfo
Without this CL :
shows only 1 core (only BSP)
With this CL :
shows all possible cores available (BSP + APs)
Change-Id: I247d8d1166c77bd01922323b6a0f14ec6640a666
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44077
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/drivers/intel/fsp2_0/silicon_init.c b/src/drivers/intel/fsp2_0/silicon_init.c
index 663b1d7..0b6540e 100644
--- a/src/drivers/intel/fsp2_0/silicon_init.c
+++ b/src/drivers/intel/fsp2_0/silicon_init.c
@@ -127,6 +127,10 @@
fsp_debug_after_silicon_init(status);
fsps_return_value_handler(FSP_SILICON_INIT_API, status);
+ /* Reinitialize CPUs if FSP-S has done MP Init */
+ if (CONFIG(USE_INTEL_FSP_MP_INIT))
+ do_mpinit_after_fsp();
+
if (!CONFIG(PLATFORM_USES_FSP2_2))
return;