soc/intel/common/block/cpu: Refactor init_cpus function

This patch makes init_cpus function external so that it can be used
in below scenarios:

1. When coreboot is doing MP initialization as part of
   BS_DEV_INIT_CHIPS (exclude this call if user has selected
   USE_INTEL_FSP_MP_INIT)
2. coreboot would like to take APs control back after FSP-S has done
   with MP initialization based on user select USE_INTEL_FSP_MP_INIT

Also make sure post_cpus_init function is getting executed
unconditionally to update MTRR snapshot on all cores.

Change-Id: Idc03090360f34df074b33ba0fced2d192edf068a
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44076
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/include/intelblocks/mp_init.h b/src/soc/intel/common/block/include/intelblocks/mp_init.h
index 10dd19be3170..6220b766ab03 100644
--- a/src/soc/intel/common/block/include/intelblocks/mp_init.h
+++ b/src/soc/intel/common/block/include/intelblocks/mp_init.h
@@ -70,6 +70,16 @@ const void *intel_mp_current_microcode(void);
 void get_microcode_info(const void **microcode, int *parallel);
 
 /*
+ * Perform BSP and AP initialization
+ * This function can be called in below cases
+ * 1. During coreboot is doing MP initialization as part of BS_DEV_INIT_CHIPS (exclude
+ * this call if user has selected USE_INTEL_FSP_MP_INIT)
+ * 2. coreboot would like to take APs control back after FSP-S has done with MP
+ * initialization based on user select USE_INTEL_FSP_MP_INIT
+ */
+void init_cpus(void);
+
+/*
  * SoC Overrides
  *
  * All new SoC must implement below functionality for ramstage.