[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/frv/lib/atomic-ops.S b/src/kernel/linux/v4.14/arch/frv/lib/atomic-ops.S
new file mode 100644
index 0000000..b7439a9
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/frv/lib/atomic-ops.S
@@ -0,0 +1,62 @@
+/* atomic-ops.S: kernel atomic operations
+ *
+ * For an explanation of how atomic ops work in this arch, see:
+ * Documentation/frv/atomic-ops.txt
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <asm/spr-regs.h>
+
+ .text
+ .balign 4
+
+###############################################################################
+#
+# uint32_t __xchg_32(uint32_t i, uint32_t *v)
+#
+###############################################################################
+ .globl __xchg_32
+ .type __xchg_32,@function
+__xchg_32:
+ or.p gr8,gr8,gr10
+0:
+ orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
+ ckeq icc3,cc7
+ ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */
+ orcr cc7,cc7,cc3 /* set CC3 to true */
+ cst.p gr10,@(gr9,gr0) ,cc3,#1
+ corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
+ beq icc3,#0,0b
+ bralr
+
+ .size __xchg_32, .-__xchg_32
+
+###############################################################################
+#
+# uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new)
+#
+###############################################################################
+ .globl __cmpxchg_32
+ .type __cmpxchg_32,@function
+__cmpxchg_32:
+ or.p gr8,gr8,gr11
+0:
+ orcc gr0,gr0,gr0,icc3
+ ckeq icc3,cc7
+ ld.p @(gr11,gr0),gr8
+ orcr cc7,cc7,cc3
+ subcc gr8,gr9,gr7,icc0
+ bnelr icc0,#0
+ cst.p gr10,@(gr11,gr0) ,cc3,#1
+ corcc gr29,gr29,gr0 ,cc3,#1
+ beq icc3,#0,0b
+ bralr
+
+ .size __cmpxchg_32, .-__cmpxchg_32