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authorSubrata Banik <subratabanik@google.com>2022-10-26 20:06:42 +0530
committerSubrata Banik <subratabanik@google.com>2022-10-27 08:50:57 +0000
commit6526e78967276e0299e890020267c560223bc90a (patch)
tree87b245a49152db195534b54e5c808995ad641b04 /src/soc/intel/alderlake/Kconfig
parent2f5025efeda354cf3180059ade8e35201884bea3 (diff)
soc/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 <subratabanik@google.com> Change-Id: I1886bc5e60c2f6bc1e2f9d3c8d9c11799d2b53c5 Reviewed-on: https://review.coreboot.org/c/coreboot/+/68901 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nick Vaccaro <nvaccaro@google.com> Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com> Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Diffstat (limited to 'src/soc/intel/alderlake/Kconfig')
-rw-r--r--src/soc/intel/alderlake/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 548ef3d712..cbc02e75e5 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -7,6 +7,7 @@ config SOC_INTEL_ALDERLAKE
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.