add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/arc/include/asm/barrier.h
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@@ -1,9 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #ifndef __ASM_BARRIER_H
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@@ -30,7 +27,7 @@
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 #define rmb()	asm volatile("dmb 1\n" : : : "memory")
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 #define wmb()	asm volatile("dmb 2\n" : : : "memory")
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-#elif !defined(CONFIG_ARC_PLAT_EZNPS)  /* CONFIG_ISA_ARCOMPACT */
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+#else
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 /*
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  * ARCompact based cores (ARC700) only have SYNC instruction which is super
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@@ -39,13 +36,6 @@
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  */
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 #define mb()	asm volatile("sync\n" : : : "memory")
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-
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-#else	/* CONFIG_ARC_PLAT_EZNPS */
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-
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-#include <plat/ctop.h>
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-
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-#define mb()	asm volatile (".word %0" : : "i"(CTOP_INST_SCHD_RW) : "memory")
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-#define rmb()	asm volatile (".word %0" : : "i"(CTOP_INST_SCHD_RD) : "memory")
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 #endif
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