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Diffstat (limited to 'src/include/cpu/x86/mtrr.h')
-rw-r--r--src/include/cpu/x86/mtrr.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h
index bff736d296..15a5cad090 100644
--- a/src/include/cpu/x86/mtrr.h
+++ b/src/include/cpu/x86/mtrr.h
@@ -78,9 +78,12 @@ int x86_mtrr_check(void);
#if CONFIG_CACHE_ROM
void x86_mtrr_enable_rom_caching(void);
void x86_mtrr_disable_rom_caching(void);
+/* Return the variable range MTRR index of the ROM cache. */
+long x86_mtrr_rom_cache_var_index(void);
#else
static inline void x86_mtrr_enable_rom_caching(void) {}
static inline void x86_mtrr_disable_rom_caching(void) {}
+static inline long x86_mtrr_rom_cache_var_index(void) { return -1; }
#endif /* CONFIG_CACHE_ROM */
#endif