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-rw-r--r--src/cpu/x86/Kconfig16
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