From 7bbc9a512aa1e19b8cb172fa3ad1cea5743bd3f3 Mon Sep 17 00:00:00 2001 From: Sean Rhodes Date: Mon, 18 Jul 2022 11:31:00 +0100 Subject: payloads/edk2: Disable the CPU Timer Lib unless supported For recent X86 CPUs, the 0x15 CPUID instruction will return Time Stamp Counter Frequence. For CPUs that do not support this instruction, EDK2 must include a different library which is the reason why this must be configured at build time. If this is enabled, and the CPU doesn't support 0x15, it will fail to boot. If is not enabled, and the CPU does support 0x15, it will still boot but without support for the leaf. Consequently, disabled it by default. Signed-off-by: Sean Rhodes Change-Id: I4f0f43ce50c4f6f7eb03063fff34d015468f6daa Reviewed-on: https://review.coreboot.org/c/coreboot/+/65950 Tested-by: build bot (Jenkins) Reviewed-by: Lean Sheng Tan --- src/soc/intel/apollolake/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'src/soc/intel/apollolake') diff --git a/src/soc/intel/apollolake/Kconfig b/src/soc/intel/apollolake/Kconfig index b2c224646f..fcde2ec3b7 100644 --- a/src/soc/intel/apollolake/Kconfig +++ b/src/soc/intel/apollolake/Kconfig @@ -37,6 +37,7 @@ config CPU_SPECIFIC_OPTIONS select SOC_INTEL_COMMON_NHLT # Misc options select CACHE_MRC_SETTINGS + select EDK2_CPU_TIMER_LIB if PAYLOAD_EDK2 select FAST_SPI_GENERATE_SSDT select FSP_PLATFORM_MEMORY_SETTINGS_VERSIONS select FSP_STATUS_GLOBAL_RESET_REQUIRED_5 -- cgit v1.2.3