1 files changed, 76 insertions, 0 deletions
diff --git a/include/lib/mmio.h b/include/lib/mmio.h
new file mode 100644
index 0000000..3242a7c
--- /dev/null
+++ b/include/lib/mmio.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MMIO_H
+#define MMIO_H
+
+#include <stdint.h>
+
+static inline void mmio_write_8(uintptr_t addr, uint8_t value)
+{
+	*(volatile uint8_t*)addr = value;
+}
+
+static inline uint8_t mmio_read_8(uintptr_t addr)
+{
+	return *(volatile uint8_t*)addr;
+}
+
+static inline void mmio_write_16(uintptr_t addr, uint16_t value)
+{
+	*(volatile uint16_t*)addr = value;
+}
+
+static inline uint16_t mmio_read_16(uintptr_t addr)
+{
+	return *(volatile uint16_t*)addr;
+}
+
+static inline void mmio_clrsetbits_16(uintptr_t addr,
+				uint16_t clear,
+				uint16_t set)
+{
+	mmio_write_16(addr, (mmio_read_16(addr) & ~clear) | set);
+}
+
+static inline void mmio_write_32(uintptr_t addr, uint32_t value)
+{
+	*(volatile uint32_t*)addr = value;
+}
+
+static inline uint32_t mmio_read_32(uintptr_t addr)
+{
+	return *(volatile uint32_t*)addr;
+}
+
+static inline void mmio_write_64(uintptr_t addr, uint64_t value)
+{
+	*(volatile uint64_t*)addr = value;
+}
+
+static inline uint64_t mmio_read_64(uintptr_t addr)
+{
+	return *(volatile uint64_t*)addr;
+}
+
+static inline void mmio_clrbits_32(uintptr_t addr, uint32_t clear)
+{
+	mmio_write_32(addr, mmio_read_32(addr) & ~clear);
+}
+
+static inline void mmio_setbits_32(uintptr_t addr, uint32_t set)
+{
+	mmio_write_32(addr, mmio_read_32(addr) | set);
+}
+
+static inline void mmio_clrsetbits_32(uintptr_t addr,
+				uint32_t clear,
+				uint32_t set)
+{
+	mmio_write_32(addr, (mmio_read_32(addr) & ~clear) | set);
+}
+
+#endif /* MMIO_H */