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-rw-r--r--hw/hpet_emul.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/hpet_emul.h b/hw/hpet_emul.h
index e8b794c7fa..d7bc102c22 100644
--- a/hw/hpet_emul.h
+++ b/hw/hpet_emul.h
@@ -46,7 +46,9 @@
#define HPET_TN_SETVAL 0x040
#define HPET_TN_32BIT 0x100
#define HPET_TN_INT_ROUTE_MASK 0x3e00
-#define HPET_TN_CFG_WRITE_MASK 0x3f4e
+#define HPET_TN_FSB_ENABLE 0x4000
+#define HPET_TN_FSB_CAP 0x8000
+#define HPET_TN_CFG_WRITE_MASK 0x7f4e
#define HPET_TN_INT_ROUTE_SHIFT 9
#define HPET_TN_INT_ROUTE_CAP_SHIFT 32
#define HPET_TN_CFG_BITS_READONLY_OR_RESERVED 0xffff80b1U