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Diffstat (limited to 'src/cpu/x86')
| -rw-r--r-- | src/cpu/x86/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/cpu/x86/Kconfig b/src/cpu/x86/Kconfig index 07e9d9ecbf..9a96aeadd8 100644 --- a/src/cpu/x86/Kconfig +++ b/src/cpu/x86/Kconfig @@ -23,6 +23,22 @@ config TSC_CALIBRATE_WITH_IO bool default n +config TSC_SYNC_LFENCE + bool + default n + help + The CPU driver should select this if the CPU needs + to execute an lfence instruction in order to synchronize + rdtsc. This is true for all modern AMD CPUs. + +config TSC_SYNC_MFENCE + bool + default n + help + The CPU driver should select this if the CPU needs + to execute an mfence instruction in order to synchronize + rdtsc. This is true for all modern Intel CPUs. + config XIP_ROM_SIZE hex default ROM_SIZE if ROMCC |