diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/include/arch/smp/spinlock.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/arch/x86/include/arch/smp/spinlock.h b/src/arch/x86/include/arch/smp/spinlock.h index 5c1dd94c36..32be2f25fb 100644 --- a/src/arch/x86/include/arch/smp/spinlock.h +++ b/src/arch/x86/include/arch/smp/spinlock.h @@ -1,6 +1,8 @@ #ifndef ARCH_SMP_SPINLOCK_H #define ARCH_SMP_SPINLOCK_H +#ifndef __PRE_RAM__ + /* * Your basic SMP spinlocks, allowing only a single CPU anywhere */ @@ -61,4 +63,16 @@ static inline __attribute__((always_inline)) void cpu_relax(void) __asm__ __volatile__("rep;nop": : :"memory"); } +#else /* !__PRE_RAM__ */ + +#define DECLARE_SPIN_LOCK(x) +#define barrier() do {} while(0) +#define spin_is_locked(lock) 0 +#define spin_unlock_wait(lock) do {} while(0) +#define spin_lock(lock) do {} while(0) +#define spin_unlock(lock) do {} while(0) +#define cpu_relax() do {} while(0) + +#endif /* !__PRE_RAM__ */ + #endif /* ARCH_SMP_SPINLOCK_H */ |