Diff: targets/cmsis/core_cmSecureAccess.h

Revision:

144:ef7eb2e8f9f7

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+++ b/targets/cmsis/core_cmSecureAccess.h	Fri Sep 02 15:07:44 2016 +0100
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+/**************************************************************************//**
+ * @file     core_cmSecureAccess.h
+ * @brief    CMSIS Cortex-M Core Secure Access Header File
+ * @version  XXX
+ * @date     10. June 2016
+ *
+ * @note
+ *
+ ******************************************************************************/
+/* Copyright (c) 2016 ARM LIMITED
+
+   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 ARM 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND 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 __CORE_CM_SECURE_ACCESS_H
+#define __CORE_CM_SECURE_ACCESS_H
+
+
+/* ###########################  Core Secure Access  ########################### */
+
+#ifdef FEATURE_UVISOR
+#include "uvisor-lib.h"
+
+/* Secure uVisor implementation. */
+
+/** Set the value at the target address.
+ *
+ * Equivalent to: `*address = value`.
+ * @param address[in]  Target address
+ * @param value[in]    Value to write at the address location.
+ */
+#define SECURE_WRITE(address, value) \
+    uvisor_write(main, UVISOR_RGW_SHARED, address, value, UVISOR_RGW_OP_WRITE, 0xFFFFFFFFUL)
+
+/** Get the value at the target address.
+ *
+ * @param address[in]  Target address
+ * @returns The value `*address`.
+ */
+#define SECURE_READ(address) \
+    uvisor_read(main, UVISOR_RGW_SHARED, address, UVISOR_RGW_OP_READ, 0xFFFFFFFFUL)
+
+/** Get the selected bits at the target address.
+ *
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ * @returns The value `*address & mask`.
+ */
+#define SECURE_BITS_GET(address, mask) \
+    UVISOR_BITS_GET(main, UVISOR_RGW_SHARED, address, mask)
+
+/** Check the selected bits at the target address.
+ *
+ * @param address[in]  Address at which to check the bits
+ * @param mask[in]     Bits to select out of the target address
+ * @returns The value `((*address & mask) == mask)`.
+ */
+#define SECURE_BITS_CHECK(address, mask) \
+    UVISOR_BITS_CHECK(main, UVISOR_RGW_SHARED, address, mask)
+
+/** Set the selected bits to 1 at the target address.
+ *
+ * Equivalent to: `*address |= mask`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ */
+#define SECURE_BITS_SET(address, mask) \
+    UVISOR_BITS_SET(main, UVISOR_RGW_SHARED, address, mask)
+
+/** Clear the selected bits at the target address.
+ *
+ * Equivalent to: `*address &= ~mask`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ */
+#define SECURE_BITS_CLEAR(address, mask) \
+    UVISOR_BITS_CLEAR(main, UVISOR_RGW_SHARED, address, mask)
+
+/** Set the selected bits at the target address to the given value.
+ *
+ * Equivalent to: `*address = (*address & ~mask) | (value & mask)`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ * @param value[in]    Value to write at the address location. Note: The value
+ *                     must be already shifted to the correct bit position
+ */
+#define SECURE_BITS_SET_VALUE(address, mask, value) \
+    UVISOR_BITS_SET_VALUE(main, UVISOR_RGW_SHARED, address, mask, value)
+
+/** Toggle the selected bits at the target address.
+ *
+ * Equivalent to: `*address ^= mask`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ */
+#define SECURE_BITS_TOGGLE(address, mask) \
+    UVISOR_BITS_TOGGLE(main, UVISOR_RGW_SHARED, address, mask)
+
+#else
+
+/* Insecure fallback implementation. */
+
+/** Set the value at the target address.
+ *
+ * Equivalent to: `*address = value`.
+ * @param address[in]  Target address
+ * @param value[in]    Value to write at the address location.
+ */
+#define SECURE_WRITE(address, value) \
+    *(address) = (value)
+
+/** Get the value at the target address.
+ *
+ * @param address[in]  Target address
+ * @returns The value `*address`.
+ */
+#define SECURE_READ(address) \
+    (*(address))
+
+/** Get the selected bits at the target address.
+ *
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ * @returns The value `*address & mask`.
+ */
+#define SECURE_BITS_GET(address, mask) \
+    (*(address) & (mask))
+
+/** Check the selected bits at the target address.
+ *
+ * @param address[in]  Address at which to check the bits
+ * @param mask[in]     Bits to select out of the target address
+ * @returns The value `((*address & mask) == mask)`.
+ */
+#define SECURE_BITS_CHECK(address, mask) \
+    ((*(address) & (mask)) == (mask))
+
+/** Set the selected bits to 1 at the target address.
+ *
+ * Equivalent to: `*address |= mask`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ */
+#define SECURE_BITS_SET(address, mask) \
+    *(address) |= (mask)
+
+/** Clear the selected bits at the target address.
+ *
+ * Equivalent to: `*address &= ~mask`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ */
+#define SECURE_BITS_CLEAR(address, mask) \
+    *(address) &= ~(mask)
+
+/** Set the selected bits at the target address to the given value.
+ *
+ * Equivalent to: `*address = (*address & ~mask) | (value & mask)`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ * @param value[in]    Value to write at the address location. Note: The value
+ *                     must be already shifted to the correct bit position
+ */
+#define SECURE_BITS_SET_VALUE(address, mask, value) \
+    *(address) = (*(address) & ~(mask)) | ((value) & (mask))
+
+/** Toggle the selected bits at the target address.
+ *
+ * Equivalent to: `*address ^= mask`.
+ * @param address[in]  Target address
+ * @param mask[in]     Bits to select out of the target address
+ */
+#define SECURE_BITS_TOGGLE(address, mask) \
+    *(address) ^= (mask)
+
+#endif
+
+#endif /* __CORE_CM_SECURE_ACCESS_H */