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-rw-r--r--src/include/cpu/x86/smm.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h
index 68c7c3bba7..a240ac2f51 100644
--- a/src/include/cpu/x86/smm.h
+++ b/src/include/cpu/x86/smm.h
@@ -33,6 +33,15 @@
#define SMM_PCI_RESOURCE_STORE_NUM_RESOURCES 6
+/*
+ * SMI Transfer Monitor (STM) descriptor reserved in SMM save state.
+ */
+#if CONFIG(STM)
+#define STM_PSD_SIZE ALIGN_UP(sizeof(TXT_PROCESSOR_SMM_DESCRIPTOR), 0x100)
+#else
+#define STM_PSD_SIZE 0
+#endif
+
/* Send cmd to APM_CNT with HAVE_SMI_HANDLER checking. */
int apm_control(u8 cmd);
u8 apm_get_apmc(void);