Jean Lucas has uploaded this change for review.
paylods/edk2: Add Kconfig to use LAPIC timer
GM45 / Core 2 Duo platforms have issues with HPET. Enable support to use
the LAPIC driver so machines actually boot and don't hang. Tested on a
Lenovo X200.
Change-Id: I33144d6c1c120e7faa47b99e8262b0997c45c9b9
Signed-off-by: Jean Lucas <jean@4ray.co>
---
M payloads/external/edk2/Kconfig
M payloads/external/edk2/Makefile
M src/northbridge/intel/gm45/Kconfig
3 files changed, 15 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/00/82000/1
diff --git a/payloads/external/edk2/Kconfig b/payloads/external/edk2/Kconfig
index 68eb455..e3e00c0 100644
--- a/payloads/external/edk2/Kconfig
+++ b/payloads/external/edk2/Kconfig
@@ -308,6 +308,13 @@
It is needed for AMD Picasso boards with eMMC storage, but will conflict with the
PCI-based eMMC driver, so should only be enabled for AMD Picasso boards.
+config EDK2_USE_LAPIC_TIMER
+ bool "Use LAPIC timer instead of HPET"
+ default n
+ help
+ Select this option to use the LAPIC timer driver instead of HPET. It is needed for GM45
+ platforms which have issues with the HPET on Intel Core 2 Duo.
+
config EDK2_CUSTOM_BUILD_PARAMS
string "edk2 additional custom build parameters"
default "-D VARIABLE_SUPPORT=SMMSTORE" if EDK2_REPO_MRCHROMEBOX && SMMSTORE_V2
diff --git a/payloads/external/edk2/Makefile b/payloads/external/edk2/Makefile
index e7f11f0..4cb7f0f 100644
--- a/payloads/external/edk2/Makefile
+++ b/payloads/external/edk2/Makefile
@@ -141,6 +141,10 @@
ifeq ($(CONFIG_EDK2_PCO_MMIO_EMMC),y)
BUILD_STR += -D USE_PCO_MMIO_EMMC=TRUE
endif
+# TIMER_SUPPORT = HPET
+ifeq ($(CONFIG_EDK2_USE_LAPIC_TIMER),y)
+BUILD_STR += -D TIMER_SUPPORT=LAPIC
+endif
endif
diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index 4fe20ee..baeb209 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -49,4 +49,8 @@
config FIXED_EPBAR_MMIO_BASE
default 0xfed19000
+config EDK2_USE_LAPIC_TIMER
+ bool
+ default y
+
endif
To view, visit change 82000. To unsubscribe, or for help writing mail filters, visit settings.