PlatformSP: Add Platform service
TF-M Platform service is a trusted service which allows secure
partitions and non-secure applications to interact with some
platform-specific components. There are a number of features which
requires some interaction with platform-specific components which
are at the same time essential for the security of the system.
Therefore, those components need to be handled by a secure partition
which is part of the trusted compute base.
This patch adds the Platform service which provides the system reset
as a first function.
Change-Id: I68253328db22a45fb6a3d6820dd85b1e24ea96f0
Signed-off-by: Marc Moreno <marc.morenoberengue@arm.com>
diff --git a/interface/include/tfm_platform_api.h b/interface/include/tfm_platform_api.h
new file mode 100644
index 0000000..1c3069e
--- /dev/null
+++ b/interface/include/tfm_platform_api.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2018, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef __TFM_PLATFORM_API__
+#define __TFM_PLATFORM_API__
+
+#include <limits.h>
+#include "tfm_api.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief TFM secure partition platform API version
+ */
+#define TFM_PLATFORM_API_VERSION_MAJOR (0)
+#define TFM_PLATFORM_API_VERSION_MINOR (1)
+
+/* The return value is shared with the TF-M partition status value.
+ * The Platform return codes shouldn't overlap with predefined TFM status
+ * values.
+ */
+#define TFM_PLATFORM_ERR_OFFSET (TFM_PARTITION_SPECIFIC_ERROR_MIN)
+
+/*!
+ * \enum tfm_platform_err_t
+ *
+ * \brief Platform service error types
+ *
+ */
+enum tfm_platform_err_t {
+ TFM_PLATFORM_ERR_SUCCESS = 0,
+ TFM_PLATFORM_ERR_SYSTEM_ERROR = TFM_PLATFORM_ERR_OFFSET,
+
+ /* Following entry is only to ensure the error code of int size */
+ TFM_PLATFORM_ERR_FORCE_INT_SIZE = INT_MAX
+};
+
+/*!
+ * \brief Resets the system.
+ *
+ * \return Returns values as specified by the \ref tfm_platform_err_t
+ */
+enum tfm_platform_err_t tfm_platform_system_reset(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __TFM_PLATFORM_API__ */