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-rw-r--r--src/include/cbmem.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/include/cbmem.h b/src/include/cbmem.h
index 5c4b7c7189..c13fe925ad 100644
--- a/src/include/cbmem.h
+++ b/src/include/cbmem.h
@@ -158,4 +158,20 @@ void set_top_of_ram(uint64_t ramtop);
void backup_top_of_ram(uint64_t ramtop);
#endif
+/*
+ * Returns 0 for the stages where we know that cbmem does not come online.
+ * Even if this function returns 1 for romstage, depending upon the point in
+ * bootup, cbmem might not actually be online.
+ */
+static inline int cbmem_possibly_online(void)
+{
+ if (ENV_BOOTBLOCK)
+ return 0;
+
+ if (ENV_VERSTAGE && IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK))
+ return 0;
+
+ return 1;
+}
+
#endif /* _CBMEM_H_ */