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-rw-r--r--src/include/cpu/x86/mtrr.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h
index 017a77eb84..913ba47487 100644
--- a/src/include/cpu/x86/mtrr.h
+++ b/src/include/cpu/x86/mtrr.h
@@ -92,6 +92,10 @@ static inline long x86_mtrr_rom_cache_var_index(void) { return -1; }
#endif
+#if !defined(__ASSEMBLER__) && defined(__PRE_RAM__) && !defined(__ROMCC__)
+void set_var_mtrr(unsigned reg, unsigned base, unsigned size, unsigned type);
+#endif
+
#if !defined(CONFIG_RAMTOP)
# error "CONFIG_RAMTOP not defined"
#endif