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x86: Allow overriding TSC_FREQ_IN_MHZ

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We should allow the value of TSC_FREQ_IN_MHZ to be overridden by
the one in arch/cpu/<xxx>/Kconfig.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng
2015-02-05 23:42:20 +08:00
committed by Simon Glass
parent ef46bea02b
commit f56aeaa4ac
1 changed files with 20 additions and 20 deletions
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40
arch/x86/Kconfig
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@@ -348,26 +348,6 @@ config FRAMEBUFFER_VESA_MODE
endmenu endmenu
config TSC_CALIBRATION_BYPASS
bool "Bypass Time-Stamp Counter (TSC) calibration"
default n
help
By default U-Boot automatically calibrates Time-Stamp Counter (TSC)
running frequency via Model-Specific Register (MSR) and Programmable
Interval Timer (PIT). If the calibration does not work on your board,
select this option and provide a hardcoded TSC running frequency with
CONFIG_TSC_FREQ_IN_MHZ below.
Normally this option should be turned on in a simulation environment
like qemu.
config TSC_FREQ_IN_MHZ
int "Time-Stamp Counter (TSC) running frequency in MHz"
depends on TSC_CALIBRATION_BYPASS
default 1000
help
The running frequency in MHz of Time-Stamp Counter (TSC).
config HAVE_FSP config HAVE_FSP
bool "Add an Firmware Support Package binary" bool "Add an Firmware Support Package binary"
help help
@@ -416,6 +396,26 @@ source "arch/x86/cpu/quark/Kconfig"
source "arch/x86/cpu/queensbay/Kconfig" source "arch/x86/cpu/queensbay/Kconfig"
config TSC_CALIBRATION_BYPASS
bool "Bypass Time-Stamp Counter (TSC) calibration"
default n
help
By default U-Boot automatically calibrates Time-Stamp Counter (TSC)
running frequency via Model-Specific Register (MSR) and Programmable
Interval Timer (PIT). If the calibration does not work on your board,
select this option and provide a hardcoded TSC running frequency with
CONFIG_TSC_FREQ_IN_MHZ below.
Normally this option should be turned on in a simulation environment
like qemu.
config TSC_FREQ_IN_MHZ
int "Time-Stamp Counter (TSC) running frequency in MHz"
depends on TSC_CALIBRATION_BYPASS
default 1000
help
The running frequency in MHz of Time-Stamp Counter (TSC).
source "board/coreboot/coreboot/Kconfig" source "board/coreboot/coreboot/Kconfig"
source "board/google/chromebook_link/Kconfig" source "board/google/chromebook_link/Kconfig"