[coreboot-gerrit] Change in coreboot[master]: arch/arm/include/smp/spinlock.h: Drop dead code

[Angel Pons (Code Review)]

Angel Pons has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/43255 )

Change subject: arch/arm/include/smp/spinlock.h: Drop dead code
......................................................................

arch/arm/include/smp/spinlock.h: Drop dead code

This code is not even being build-tested. Drop it before it grows moss.

Change-Id: I23f9aa969febe58dd3842e6a7cc75a6777b90b17
Signed-off-by: Angel Pons 
---
M src/arch/arm/include/smp/spinlock.h
1 file changed, 0 insertions(+), 45 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/43255/1

diff --git a/src/arch/arm/include/smp/spinlock.h b/src/arch/arm/include/smp/spinlock.h
index e7aa367..9fddfad 100644
--- a/src/arch/arm/include/smp/spinlock.h
+++ b/src/arch/arm/include/smp/spinlock.h
@@ -5,50 +5,5 @@

/* FIXME: implement this for ARM */
 #error "implement this for ARM"
-#if 0
-/*
- * Your basic SMP spinlocks, allowing only a single CPU anywhere
- */

-typedef struct {
-	volatile unsigned int lock;
-} spinlock_t;
-
-
-#define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 }
-#define DECLARE_SPIN_LOCK(x) static spinlock_t x = SPIN_LOCK_UNLOCKED;
-
-#define barrier() (__asm__ __volatile__("" : : : "memory"))
-#define spin_is_locked(x)	(*(volatile char *)(&(x)->lock) != 0)
-#define spin_unlock_wait(x)	do { barrier(); } while (spin_is_locked(x))
-
-static __always_inline void spin_lock(spinlock_t *lock)
-{
-	unsigned long tmp;
-	__asm__ __volatile__ (
-		"1:	ldrex	%0, [%1]\n"
-		"	teq	%0, #0\n"
-		"	strexeq	%0, %2, [%1]\n"
-		"	teqeq	%0, #0\n"
-		"	bne	1b\n"
-		: "=&r" (tmp)
-		: "r" (&lock->lock), "r" (1)
-		: "cc"
-	);
-	barrier();
-}
-
-static __always_inline void spin_unlock(spinlock_t *lock)
-{
-	__asm__ __volatile__(
-		"	str	%1, [%0]\n"
-		:
-		: "r" (&lock->lock), "r" (0)
-		: "cc"
-	);
-}
-
-#define cpu_relax() barrier()
-
-#endif
 #endif /* ARCH_SMP_SPINLOCK_H */