diff options
| author | Frans Hendriks <fhendriks@eltan.com> | 2018-11-16 12:08:41 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-11-21 12:08:45 +0000 |
| commit | f2af702df93a057fed54192abc8a907613841284 (patch) | |
| tree | 7bdf748fffe45c72e06640961c680a734dc15499 /src/soc/intel/braswell/acpi.c | |
| parent | ef169d6cc6095f4088119117daa0421a835fef3c (diff) | |
soc/intel/braswell: Disable OS use of HPET
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 <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/29655
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Diffstat (limited to 'src/soc/intel/braswell/acpi.c')
| -rw-r--r-- | src/soc/intel/braswell/acpi.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/soc/intel/braswell/acpi.c b/src/soc/intel/braswell/acpi.c index 820e56a6f7..e7910724c4 100644 --- a/src/soc/intel/braswell/acpi.c +++ b/src/soc/intel/braswell/acpi.c @@ -4,6 +4,7 @@ * Copyright (C) 2007-2009 coresystems GmbH * Copyright (C) 2013 Google Inc. * Copyright (C) 2015 Intel Corp. + * Copyright (C) 2018 Eltan B.V. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -486,8 +487,10 @@ unsigned long southcluster_write_acpi_tables(struct device *device, acpi_header_t *ssdt2; global_nvs_t *gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); - current = acpi_write_hpet(device, current, rsdp); - current = acpi_align_current(current); + if (!IS_ENABLED(CONFIG_DISABLE_HPET)) { + current = acpi_write_hpet(device, current, rsdp); + current = acpi_align_current(current); + } if (IS_ENABLED(CONFIG_INTEL_GMA_ADD_VBT)) { igd_opregion_t *opregion; |