From f2af702df93a057fed54192abc8a907613841284 Mon Sep 17 00:00:00 2001 From: Frans Hendriks Date: Fri, 16 Nov 2018 12:08:41 +0100 Subject: soc/intel/braswell: Disable OS use of HPET MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The timer interrupts don't appear when HPET is enabled. This result in Linux reporting 'MP-BIOS bug: 8254 timer not connected to IO-APIC' Enabling CONFIG_DISABLE_HPET disables OS use of HPET. Intel issue 4800413 (doc #5965535) reports Windows7/Ubuntu Installation Hang or Slow Boot Issue. BUG=Intel #4800413 TEST=Portwell PQ7-M107 Change-Id: Ie9a78dcc736eb057c040a0a303c812adb1f76f3c Signed-off-by: Frans Hendriks Reviewed-on: https://review.coreboot.org/c/29655 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi Reviewed-by: Michał Żygowski --- src/soc/intel/braswell/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/soc/intel/braswell/Kconfig') diff --git a/src/soc/intel/braswell/Kconfig b/src/soc/intel/braswell/Kconfig index 50c2802c6d..c383cdf892 100644 --- a/src/soc/intel/braswell/Kconfig +++ b/src/soc/intel/braswell/Kconfig @@ -128,4 +128,11 @@ config CHIPSET_BOOTBLOCK_INCLUDE string default "soc/intel/braswell/bootblock/timestamp.inc" +config DISABLE_HPET + bool "Disable the HPET device" + default n + help + Enable this to disable the HPET support + Solves the Linux MP-BIOS bug timer not connected. + endif -- cgit v1.2.3