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-rw-r--r--src/arch/arm/include/armv7/arch/arch_io.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/src/arch/arm/include/armv7/arch/arch_io.h b/src/arch/arm/include/armv7/arch/arch_io.h
new file mode 100644
index 000000000..360fa6425
--- /dev/null
+++ b/src/arch/arm/include/armv7/arch/arch_io.h
@@ -0,0 +1,68 @@
+/*
+ * Originally imported from linux/include/asm-arm/io.h. This file has changed
+ * substantially since then.
+ *
+ * Copyright 2013 Google Inc.
+ * Copyright (C) 1996-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Modifications:
+ * 08-Apr-2013 G Replaced several macros with inlines for type safety.
+ * 16-Sep-1996 RMK Inlined the inx/outx functions & optimised for both
+ * constant addresses and variable addresses.
+ * 04-Dec-1997 RMK Moved a lot of this stuff to the new architecture
+ * specific IO header files.
+ * 27-Mar-1999 PJB Second parameter of memcpy_toio is const..
+ * 04-Apr-1999 PJB Added check_signature.
+ * 12-Dec-1999 RMK More cleanups
+ * 18-Jun-2000 RMK Removed virt_to_* and friends definitions
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include <arch/cache.h> /* for dmb() */
+#include <stdint.h>
+
+static inline uint8_t read8(const void *addr)
+{
+ dmb();
+ return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t read16(const void *addr)
+{
+ dmb();
+ return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t read32(const void *addr)
+{
+ dmb();
+ return *(volatile uint32_t *)addr;
+}
+
+static inline void write8(uint8_t val, void *addr)
+{
+ dmb();
+ *(volatile uint8_t *)addr = val;
+ dmb();
+}
+
+static inline void write16(uint16_t val, void *addr)
+{
+ dmb();
+ *(volatile uint16_t *)addr = val;
+ dmb();
+}
+
+static inline void write32(uint32_t val, void *addr)
+{
+ dmb();
+ *(volatile uint32_t *)addr = val;
+ dmb();
+}
+
+#endif /* __ASM_ARM_ARCH_IO_H */