diff --git a/include/asm-ppc/config.h b/include/asm-ppc/config.h
index d5f82b4..796707e 100644
--- a/include/asm-ppc/config.h
+++ b/include/asm-ppc/config.h
@@ -63,6 +63,13 @@
 #define CONFIG_TSECV2
 #endif
 
+/* Number of TLB CAM entries we have on FSL Book-E chips */
+#if defined(CONFIG_E500MC)
+#define CONFIG_SYS_NUM_TLBCAMS	64
+#elif defined(CONFIG_E500)
+#define CONFIG_SYS_NUM_TLBCAMS	16
+#endif
+
 /* Relocation to SDRAM works on all PPC boards */
 #define CONFIG_RELOC_FIXUP_WORKS
 
diff --git a/include/asm-ppc/global_data.h b/include/asm-ppc/global_data.h
index 55e7e20..3f11918 100644
--- a/include/asm-ppc/global_data.h
+++ b/include/asm-ppc/global_data.h
@@ -107,6 +107,9 @@
 #if defined(CONFIG_FSL_LAW)
 	u32 used_laws;
 #endif
+#if defined(CONFIG_E500)
+	u32 used_tlb_cams[(CONFIG_SYS_NUM_TLBCAMS+31)/32];
+#endif
 #if defined(CONFIG_MPC5xxx)
 	unsigned long	ipb_clk;
 	unsigned long	pci_clk;
diff --git a/include/asm-ppc/mmu.h b/include/asm-ppc/mmu.h
index ec22a50..fd10249 100644
--- a/include/asm-ppc/mmu.h
+++ b/include/asm-ppc/mmu.h
@@ -479,6 +479,8 @@
 extern void invalidate_tlb(u8 tlb);
 extern void init_tlbs(void);
 extern int find_tlb_idx(void *addr, u8 tlbsel);
+extern void init_used_tlb_cams(void);
+extern int find_free_tlbcam(void);
 
 extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg);