1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/mxc/security/sahara2/fsl_shw_user.c b/drivers/mxc/security/sahara2/fsl_shw_user.c
new file mode 100644
index 000000000000..e53b29cfd404
--- /dev/null
+++ b/drivers/mxc/security/sahara2/fsl_shw_user.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/*!
+ * @file fsl_shw_user.c
+ *
+ * This file implements user and platform capabilities functions of the FSL SHW
+ * API for Sahara
+ */
+#include "sahara.h"
+#include <adaptor.h>
+#include <sf_util.h>
+
+#ifdef __KERNEL__
+EXPORT_SYMBOL(fsl_shw_get_capabilities);
+EXPORT_SYMBOL(fsl_shw_register_user);
+EXPORT_SYMBOL(fsl_shw_deregister_user);
+EXPORT_SYMBOL(fsl_shw_get_results);
+#endif				/* __KERNEL__ */
+
+struct cap_t {
+	unsigned populated;
+	union {
+		uint32_t buffer[sizeof(fsl_shw_pco_t)];
+		fsl_shw_pco_t pco;
+	};
+};
+
+static struct cap_t cap = {
+	0,
+	{}
+};
+
+/* REQ-S2LRD-PINTFC-API-GEN-003 */
+/*!
+ * Determine the hardware security capabilities of this platform.
+ *
+ * Though a user context object is passed into this function, it will always
+ * act in a non-blocking manner.
+ *
+ * @param  user_ctx   The user context which will be used for the query.
+ *
+ * @return  A pointer to the capabilities object.
+ */
+fsl_shw_pco_t *fsl_shw_get_capabilities(fsl_shw_uco_t * user_ctx)
+{
+	fsl_shw_pco_t *retval = NULL;
+
+	if (cap.populated) {
+		retval = &cap.pco;
+	} else {
+		if (get_capabilities(user_ctx, &cap.pco) == FSL_RETURN_OK_S) {
+			cap.populated = 1;
+			retval = &cap.pco;
+		}
+	}
+	return retval;
+}
+
+/* REQ-S2LRD-PINTFC-API-GEN-004 */
+
+/*!
+ * Create an association between the the user and the provider of the API.
+ *
+ * @param  user_ctx   The user context which will be used for this association.
+ *
+ * @return    A return code of type #fsl_shw_return_t.
+ */
+fsl_shw_return_t fsl_shw_register_user(fsl_shw_uco_t * user_ctx)
+{
+	return sah_register(user_ctx);
+}
+
+/* REQ-S2LRD-PINTFC-API-GEN-005 */
+
+/*!
+ * Destroy the association between the the user and the provider of the API.
+ *
+ * @param  user_ctx   The user context which is no longer needed.
+ *
+ * @return    A return code of type #fsl_shw_return_t.
+ */
+fsl_shw_return_t fsl_shw_deregister_user(fsl_shw_uco_t * user_ctx)
+{
+	return sah_deregister(user_ctx);
+}
+
+/* REQ-S2LRD-PINTFC-API-GEN-006 */
+
+/*!
+ * Retrieve results from earlier operations.
+ *
+ * @param         user_ctx     The user's context.
+ * @param         result_size  The number of array elements of @a results.
+ * @param[in,out] results      Pointer to first of the (array of) locations to
+ *                             store results.
+ * @param[out]    result_count Pointer to store the number of results which
+ *                             were returned.
+ *
+ * @return    A return code of type #fsl_shw_return_t.
+ */
+fsl_shw_return_t fsl_shw_get_results(fsl_shw_uco_t * user_ctx,
+				     unsigned result_size,
+				     fsl_shw_result_t results[],
+				     unsigned *result_count)
+{
+	fsl_shw_return_t status;
+
+	/* perform a sanity check on the uco */
+	status = sah_validate_uco(user_ctx);
+
+	/* if uco appears ok, build structure and pass to get results */
+	if (status == FSL_RETURN_OK_S) {
+		sah_results arg;
+
+		/* if requested is zero, it's done before it started */
+		if (result_size > 0) {
+			arg.requested = result_size;
+			arg.actual = result_count;
+			arg.results = results;
+			/* get the results */
+			status = sah_get_results(&arg, user_ctx);
+		}
+	}
+
+	return status;
+}