From ce68d68e00bb4801b34efdd15eb786653a961d38 Mon Sep 17 00:00:00 2001 From: Lean Sheng Tan Date: Wed, 15 Mar 2023 15:32:01 +0100 Subject: [PATCH] soc/intel/alderlake: Enable early caching of RAMTOP region Enable early caching of the TOM region to optimize the boot time by selecting `SOC_INTEL_COMMON_BASECODE_RAMTOP` config. Purpose of this feature is to cache the TOM (with a fixed size of 16MB) for all consecutive boots even before calling into the FSP. Otherwise, this range remains un-cached until postcar boot stage updates the MTRR programming. FSP-M and late romstage uses this uncached TOM range for various purposes (like relocating services between SPI mapped cached memory to DRAM based uncache memory) hence having the ability to cache this range beforehand would help to optimize the boot time (more than 50ms as applicable). TEST=Able to build and boot Starlab ADL laptop to OS. Signed-off-by: Lean Sheng Tan Change-Id: Iba554af4ff0896e133d20860ff72dd1a10ebd1e3 Reviewed-on: https://review.coreboot.org/c/coreboot/+/73736 Reviewed-by: Subrata Banik Reviewed-by: Sean Rhodes Tested-by: build bot (Jenkins) Reviewed-by: Maximilian Brune --- src/soc/intel/alderlake/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig index 480ee0b8c4..09134805b8 100644 --- a/src/soc/intel/alderlake/Kconfig +++ b/src/soc/intel/alderlake/Kconfig @@ -83,6 +83,8 @@ config CPU_SPECIFIC_OPTIONS select SOC_INTEL_COMMON select CPU_INTEL_COMMON_VOLTAGE select SOC_INTEL_COMMON_ACPI_WAKE_SOURCE + select SOC_INTEL_COMMON_BASECODE + select SOC_INTEL_COMMON_BASECODE_RAMTOP select SOC_INTEL_COMMON_BLOCK select SOC_INTEL_COMMON_BLOCK_ACPI select SOC_INTEL_COMMON_BLOCK_ACPI_CPPC @@ -118,7 +120,6 @@ config CPU_SPECIFIC_OPTIONS select SOC_INTEL_COMMON_BLOCK_VTD select SOC_INTEL_COMMON_BLOCK_XHCI select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG - select SOC_INTEL_COMMON_BASECODE select SOC_INTEL_COMMON_FSP_RESET select SOC_INTEL_COMMON_PCH_CLIENT select SOC_INTEL_COMMON_RESET