diff --git a/src/include/cpu/p6/l2_cache.h b/src/include/cpu/p6/l2_cache.h
new file mode 100644
index 0000000000..3390cdac18
--- /dev/null
+++ b/src/include/cpu/p6/l2_cache.h
@@ -0,0 +1,18 @@
+#ifndef __LINUXBIOS_P6_L2_CACHE_H
+#define __LINUXBIOS_P6_L2_CACHE_H
+
+#define EBL_CR_POWERON	0x2A
+
+#define BBL_CR_D0	0x88
+#define BBL_CR_D1	0x89
+#define BBL_CR_D2	0x8A
+#define BBL_CR_D3	0x8B
+
+#define BBL_CR_ADDR	0x116
+#define BBL_CR_DECC	0x118
+#define BBL_CR_CTL	0x119
+#define BBL_CR_TRIG	0x11A
+#define BBL_CR_BUSY	0x11B
+#define BBL_CR_CTL3	0x11E
+
+#endif /* __LINUXBIOS_P6_L2_CACHE_H */