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Diffstat (limited to 'drivers/timer/Kconfig')
| -rw-r--r-- | drivers/timer/Kconfig | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig index 5f4bc6edb6..96cc49273f 100644 --- a/drivers/timer/Kconfig +++ b/drivers/timer/Kconfig @@ -174,6 +174,29 @@ config X86_TSC_TIMER help Select this to enable Time-Stamp Counter (TSC) timer for x86. +config X86_TSC_READ_BASE + bool "Read the TSC timer base on start-up" + depends on X86_TSC_TIMER + help + On x86 platforms the TSC timer tick starts at the value 0 on reset. + This it makes no sense to read the timer on boot and use that as the + base, since we will miss some time taken to load U-Boot, etc. This + delay is controlled by the SoC and we cannot reduce it, but for + bootstage we want to record the time since reset as accurately as + possible. + + The only exception is when U-Boot is used as a secondary bootloader, + where this option should be enabled. + +config TPL_X86_TSC_TIMER_NATIVE + bool "x86 TSC timer uses native calibration" + depends on TPL && X86_TSC_TIMER + help + Selects native timer calibration for TPL and don't include the other + methods in the code. This helps to reduce code size in TPL and works + on fairly modern Intel chips. Code-size reductions is about 700 + bytes. + config MTK_TIMER bool "MediaTek timer support" depends on TIMER |