[S] Change in coreboot[master]: oc/intel/alderlake: Select X86_INIT_NEED_1_SIPI Kconfig for RPL

[Subrata Banik (Code Review)]

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/68901 )

Change subject: oc/intel/alderlake: Select X86_INIT_NEED_1_SIPI Kconfig for RPL
......................................................................

oc/intel/alderlake: Select X86_INIT_NEED_1_SIPI Kconfig for RPL

This patch helps to save 10.200ms of booting time without any issue
seen during MP Init. All cores are out from reset and alive.

Additionally, no performance degradation is observed while running
benchmarks.

Refer to Intel Technical White Paper number:751003 for more details.

BUG=b:211770003
TEST=Able to boot to ChromeOS with all cores are enabled.

Signed-off-by: Subrata Banik 
Change-Id: I1886bc5e60c2f6bc1e2f9d3c8d9c11799d2b53c5
---
M src/soc/intel/alderlake/Kconfig
1 file changed, 22 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/01/68901/1

diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 92a8c06..4fe9984 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -7,6 +7,7 @@

config SOC_INTEL_RAPTORLAKE
    bool
+	select X86_INIT_NEED_1_SIPI
    help
     Intel Raptorlake support. Mainboards using RPL should select
     SOC_INTEL_RAPTORLAKE and SOC_INTEL_ALDERLAKE_PCH_* together.