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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>
This commit is contained in:
Frans Hendriks 2018-11-16 12:08:41 +01:00 committed by Patrick Georgi
parent ef169d6cc6
commit f2af702df9
3 changed files with 15 additions and 2 deletions
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7
src/soc/intel/braswell/Kconfig
View File

@ -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

7
src/soc/intel/braswell/acpi.c
View File

@ -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;

3
src/soc/intel/braswell/acpi/lpc.asl
View File

@ -3,6 +3,7 @@
*
* Copyright (C) 2007-2009 coresystems GmbH
* Copyright (C) 2013 Google Inc.
* 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
@ -47,6 +48,7 @@ Device (LPCB)
})
}
#if !IS_ENABLED(CONFIG_DISABLE_HPET)
Device (HPET)
{
Name (_HID, EISAID("PNP0103"))
@ -62,6 +64,7 @@ Device (LPCB)
Memory32Fixed(ReadOnly, 0xfed00000, 0x400)
})
}
#endif
Device(PIC) /* 8259 Interrupt Controller */
{