soc/intel/xeon_sp/cpx: Add multi-core init

Add minimal MP init. No SMM, no turbo, not c/p states.

TEST=boot linux kernel, observe CPUs are online, schedule tasks
and perform useful work. Tested on Cedar Island CRB with only 1
socket populated

Change-Id: I0af374ab3956009e9208917d911d29eb21db6069
Signed-off-by: Andrey Petrov <anpetrov@fb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40035
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/src/soc/intel/xeon_sp/cpx/chip.c b/src/soc/intel/xeon_sp/cpx/chip.c
index dbbf3b31a5..e4063dc99d 100644
--- a/src/soc/intel/xeon_sp/cpx/chip.c
+++ b/src/soc/intel/xeon_sp/cpx/chip.c
@@ -7,6 +7,7 @@
 #include <cpu/x86/lapic.h>
 #include <device/pci.h>
 #include <fsp/api.h>
+#include <soc/cpu.h>
 #include <soc/ramstage.h>
 #include <soc/pm.h>
 
@@ -29,16 +30,11 @@ static struct device_operations pci_domain_ops = {
 	.scan_bus = &pci_domain_scan_bus,
 };
 
-static void init_cpus(struct device *dev)
-{
-	/* not implemented yet */
-}
-
 static struct device_operations cpu_bus_ops = {
 	.read_resources = DEVICE_NOOP,
 	.set_resources = DEVICE_NOOP,
 	.enable_resources = DEVICE_NOOP,
-	.init = init_cpus,
+	.init = cpx_init_cpus,
 	.scan_bus = NULL,
 };