msm8660: scm-io: Support secure io operations
Some registers accesses need to be done securely. Implement a thin
API similar to readl/writel which requests the secure side to
read or write a register securely.
Change-Id: If41f7321877ceead7ab38f36faeee1114bd82f4d
Signed-off-by: Ajay Dudani <adudani@codeaurora.org>
diff --git a/platform/msm8x60/include/platform/scm-io.h b/platform/msm8x60/include/platform/scm-io.h
new file mode 100644
index 0000000..78df5c9
--- /dev/null
+++ b/platform/msm8x60/include/platform/scm-io.h
@@ -0,0 +1,37 @@
+/*
+ * * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of Code Aurora Forum, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __PLATFORM_MSM8X60_SCM_IO_H
+#define __PLATFORM_MSM8X60_SCM_IO_H
+
+#include <sys/types.h>
+
+uint32_t secure_readl(uint32_t);
+void secure_writel(uint32_t, uint32_t);
+
+#endif