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-rw-r--r--src/cpu/x86/mtrr/earlymtrr.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/cpu/x86/mtrr/earlymtrr.c b/src/cpu/x86/mtrr/earlymtrr.c
index 3c8d5f5eca..150091e7a8 100644
--- a/src/cpu/x86/mtrr/earlymtrr.c
+++ b/src/cpu/x86/mtrr/earlymtrr.c
@@ -101,6 +101,7 @@ static void do_early_mtrr_init(const unsigned long *mtrr_msrs)
#if defined(CONFIG_XIP_ROM_SIZE)
#if defined(CONFIG_TINY_BOOTBLOCK) && CONFIG_TINY_BOOTBLOCK
+extern unsigned long AUTO_XIP_ROM_BASE;
#define REAL_XIP_ROM_BASE AUTO_XIP_ROM_BASE
#else
#define REAL_XIP_ROM_BASE CONFIG_XIP_ROM_BASE