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Diffstat (limited to 'platform/drivers/arm/juno_trng/mmio.h')
-rw-r--r--platform/drivers/arm/juno_trng/mmio.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/platform/drivers/arm/juno_trng/mmio.h b/platform/drivers/arm/juno_trng/mmio.h
new file mode 100644
index 000000000..da8d82fde
--- /dev/null
+++ b/platform/drivers/arm/juno_trng/mmio.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2013-2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copied from trustedfirmware-a and stripped down to only provide functions
+ * used by juno_trng.c.
+ */
+
+#ifndef MMIO_H
+#define MMIO_H
+
+#include <stdint.h>
+
+
+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;
+}
+
+#endif /* MMIO_H */