diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index a42110e..01130e9 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -51,6 +51,9 @@ extern void pci_console_init(const char *arg);

 static unsigned long long MAX_MEMORY = 512ull << 20;

+DEFINE_SEMAPHORE(octeon_bootbus_sem);
+EXPORT_SYMBOL(octeon_bootbus_sem);
+
 struct octeon_boot_descriptor *octeon_boot_desc_ptr;

 struct cvmx_bootinfo *octeon_bootinfo;
diff --git a/arch/mips/include/asm/octeon/octeon.h b/arch/mips/include/asm/octeon/octeon.h
index 0415965..de9f74e 100644
--- a/arch/mips/include/asm/octeon/octeon.h
+++ b/arch/mips/include/asm/octeon/octeon.h
@@ -335,4 +335,6 @@ void octeon_irq_set_ip4_handler(octeon_irq_ip4_handler_t);

 extern void octeon_fixup_irqs(void);

+extern struct semaphore octeon_bootbus_sem;
+
 #endif /* __ASM_OCTEON_OCTEON_H */
