1 files changed, 0 insertions, 73 deletions
diff --git a/core/cortex-m0/atomic.h b/core/cortex-m0/atomic.h
deleted file mode 100644
index 0c58e71e41..0000000000
--- a/core/cortex-m0/atomic.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/* Copyright 2014 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* Atomic operations for ARMv6-M */
-
-#ifndef __CROS_EC_ATOMIC_H
-#define __CROS_EC_ATOMIC_H
-
-#include "common.h"
-
-typedef int atomic_t;
-typedef atomic_t atomic_val_t;
-
-/**
- * Implements atomic arithmetic operations on 32-bit integers.
- *
- * There is no load/store exclusive on ARMv6-M, just disable interrupts
- */
-#define ATOMIC_OP(asm_op, a, v)					\
-({								\
-	uint32_t reg0, reg1;					\
-								\
-	__asm__ __volatile__("   cpsid i\n"			\
-			     "   ldr  %0, [%2]\n"		\
-			     "   mov  %1, %0\n"			\
-			     #asm_op" %0, %0, %3\n"		\
-			     "   str  %0, [%2]\n"		\
-			     "   cpsie i\n"			\
-			     : "=&l"(reg0), "=&l"(reg1)		\
-			     : "l"(a), "r"(v)			\
-			     : "cc", "memory");			\
-	reg1;							\
-})
-
-static inline atomic_val_t atomic_clear_bits(atomic_t *addr, atomic_val_t bits)
-{
-	return ATOMIC_OP(bic, addr, bits);
-}
-
-static inline atomic_val_t atomic_or(atomic_t *addr, atomic_val_t bits)
-{
-	return ATOMIC_OP(orr, addr, bits);
-}
-
-static inline atomic_val_t atomic_add(atomic_t *addr, atomic_val_t value)
-{
-	return ATOMIC_OP(add, addr, value);
-}
-
-static inline atomic_val_t atomic_sub(atomic_t *addr, atomic_val_t value)
-{
-	return ATOMIC_OP(sub, addr, value);
-}
-
-static inline atomic_val_t atomic_clear(atomic_t *addr)
-{
-	atomic_t ret;
-
-	__asm__ __volatile__("   mov     %2, #0\n"
-			     "   cpsid   i\n"
-			     "   ldr     %0, [%1]\n"
-			     "   str     %2, [%1]\n"
-			     "   cpsie   i\n"
-			     : "=&l" (ret)
-			     : "l" (addr), "r" (0)
-			     : "cc", "memory");
-
-	return ret;
-}
-
-#endif  /* __CROS_EC_ATOMIC_H */