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-rw-r--r--src/include/cpu/x86/smm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h
index ca834743b5..513b6df708 100644
--- a/src/include/cpu/x86/smm.h
+++ b/src/include/cpu/x86/smm.h
@@ -17,6 +17,7 @@
#define SMM_SAVE_STATE_BEGIN(x) (SMM_ENTRY_OFFSET + (x))
#define APM_CNT 0xb2
+#define APM_CNT_NOOP_SMI 0x00
#define APM_CNT_CST_CONTROL 0x85
#define APM_CNT_PST_CONTROL 0x80
#define APM_CNT_ACPI_DISABLE 0x1e