SST: Use asset ID instead of handle in all APIs

This patch updates the SST interfaces to:
- use asset ID instead of asset handle as the object is always
  close at the end of each request
- change the asset ID type from uint16_t to uint32_t to allow
  longer asset IDs which can contain vendor specific ID codes
- remove tfm_sst_get_handle API
- updates all files which depend on these APIs and
  their documentation

Change-Id: I4a844e548cc7cdfe2277b007717003a0263e45d1
Signed-off-by: Marc Moreno <marc.morenoberengue@arm.com>
diff --git a/interface/include/tfm_sst_veneers.h b/interface/include/tfm_sst_veneers.h
index 108ea97..033f1cb 100644
--- a/interface/include/tfm_sst_veneers.h
+++ b/interface/include/tfm_sst_veneers.h
@@ -15,118 +15,101 @@
 #include "tfm_sst_defs.h"
 
 /**
- * \brief Gets handler for the given asset uuid. If an asset is deleted, the
- *        linked asset handle reference is no longer valid and will give
- *        TFM_SST_ERR_ASSET_REF_INVALID if used.
- *
- * \param[in]  app_id      Application ID
- * \param[in]  asset_uuid  Asset UUID
- * \param[out] hdl         Handle to be returned
- *
- * \return Returns asset handle. If asset is not found, it returns
- *         TFM_SST_ERR_ASSET_NOT_FOUND. If SST area is not prepared, it returns
- *         TFM_SST_ERR_ASSET_NOT_PREPARED.
- */
-enum tfm_sst_err_t tfm_sst_veneer_get_handle(uint32_t app_id,
-                                             uint16_t asset_uuid,
-                                             uint32_t *hdl);
-/**
- * \brief Allocates space for the asset, referenced by asset handler,
+ * \brief Allocates space for the asset, referenced by asset UUID,
  *        without setting any data in the asset.
  *
  * \param[in] app_id      Application ID
  * \param[in] asset_uuid  Asset UUID
  *
- * \return Returns an asset handle. If SST area is not prepared, it returns
+ * \return Returns TFM_SST_ERR_SUCCESS if the asset has been created correctly.
+ *         If SST area is not prepared, it returns
  *         TFM_SST_ERR_ASSET_NOT_PREPARED. If SST area is full, it returns
  *         TFM_SST_ERR_STORAGE_SYSTEM_FULL. If application id doesn't have the
  *         write rights, it returns TFM_SST_ERR_PERMS_NOT_ALLOWED.
  */
-enum tfm_sst_err_t tfm_sst_veneer_create(uint32_t app_id, uint16_t asset_uuid);
+enum tfm_sst_err_t tfm_sst_veneer_create(uint32_t app_id, uint32_t asset_uuid);
 
 /**
- * \brief Gets asset's information referenced by asset handler.
+ * \brief Gets asset's information referenced by asset UUID.
  *
- * \param[in]  app_id        Application ID
- * \param[in]  asset_handle  Asset handler
- * \param[out] info          Pointer to store the asset's information
- *                           \ref tfm_sst_asset_info_t
+ * \param[in]  app_id      Application ID
+ * \param[in]  asset_uuid  Asset UUID
+ * \param[out] info        Pointer to store the asset's information
+ *                         \ref tfm_sst_asset_info_t
  *
  * \return Returns error code as specified in \ref tfm_sst_err_t
  */
-enum tfm_sst_err_t tfm_sst_veneer_get_info(uint32_t app_id,
-                                           uint32_t asset_handle,
-                                           struct tfm_sst_asset_info_t *info);
+enum tfm_sst_err_t tfm_sst_veneer_get_info(uint32_t app_id, uint32_t asset_uuid,
+                                    struct tfm_sst_asset_info_t *info);
 
 /**
- * \brief Gets asset's attributes referenced by asset handler.
+ * \brief Gets asset's attributes referenced by asset UUID.
  *
- * \param[in]  app_id        Application ID
- * \param[in]  asset_handle  Asset handler
- * \param[out] attrs         Pointer to store the asset's attributes
+ * \param[in]  app_id      Application ID
+ * \param[in]  asset_uuid  Asset UUID
+ * \param[out] attrs       Pointer to store the asset's attributes
+ *                         \ref tfm_sst_asset_attrs_t
  *
  * \return Returns error code as specified in \ref tfm_sst_err_t
  */
-enum tfm_sst_err_t tfm_sst_veneer_get_attributes(
-                                           uint32_t app_id,
-                                           uint32_t asset_handle,
+enum tfm_sst_err_t tfm_sst_veneer_get_attributes(uint32_t app_id,
+                                                 uint32_t asset_uuid,
                                            struct tfm_sst_asset_attrs_t *attrs);
 
 /**
- * \brief Sets asset's attributes referenced by asset handler.
+ * \brief Sets asset's attributes referenced by asset UUID.
  *
- * \param[in] app_id        Application ID
- * \param[in] asset_handle  Asset handler
- * \param[in] attrs         Pointer to new the asset's attributes
- *                           \ref tfm_sst_asset_attrs_t
+ * \param[in] app_id       Application ID
+ * \param[in] asset_uuid   Asset UUID
+ * \param[in] attrs        Pointer to new the asset's attributes
+ *                         \ref tfm_sst_asset_attrs_t
  *
  * \return Returns error code as specified in \ref tfm_sst_err_t
  */
-enum tfm_sst_err_t tfm_sst_veneer_set_attributes(
-                                     uint32_t app_id,
-                                     uint32_t asset_handle,
+enum tfm_sst_err_t tfm_sst_veneer_set_attributes(uint32_t app_id,
+                                                 uint32_t asset_uuid,
                                      const struct tfm_sst_asset_attrs_t *attrs);
 
 /**
- * \brief Reads asset's data from asset referenced by asset handler.
+ * \brief Reads asset's data from asset referenced by asset UUID.
  *
- * \param[in]     app_id         Application ID
- * \param[in]     asset_handle   Asset handler
- * \param[in/out] data           Pointer to data vector \ref tfm_sst_buf_t to
- *                               store data, size and offset
+ * \param[in]     app_id      Application ID
+ * \param[in]     asset_uuid  Asset UUID
+ * \param[in/out] data        Pointer to data vector \ref tfm_sst_buf_t to
+ *                            store data, size and offset
  *
  * \return Returns the number of bytes written or a castable \ref tfm_sst_err_t
  *         value
  */
 enum tfm_sst_err_t tfm_sst_veneer_read(uint32_t app_id,
-                                       uint32_t asset_handle,
+                                       uint32_t asset_uuid,
                                        struct tfm_sst_buf_t *data);
 /**
- * \brief Writes data into an asset referenced by asset handler.
+ * \brief Writes data into an asset referenced by asset UUID.
  *
- * \param[in] app_id         Application ID
- * \param[in] asset_handle   Asset handler
- * \param[in] data           Pointer to data vector \ref tfm_sst_buf_t which
- *                           contains the data to write
+ * \param[in] app_id      Application ID
+ * \param[in] asset_uuid  Asset UUID
+ * \param[in] data        Pointer to data vector \ref tfm_sst_buf_t which
+ *                        contains the data to write
  *
  * \return Returns the number of bytes written or a castable \ref tfm_sst_err_t
  *         value
  */
 enum tfm_sst_err_t tfm_sst_veneer_write(uint32_t app_id,
-                                        uint32_t asset_handle,
+                                        uint32_t asset_uuid,
                                         struct tfm_sst_buf_t *data);
 /**
- * \brief Deletes the asset referenced by the asset handler.
+ * \brief Deletes the asset referenced by the asset UUID.
  *
- * \param[in] app_id        Application ID
- * \param[in] asset_handle  Asset handler
+ * \param[in] app_id      Application ID
+ * \param[in] asset_uuid  Asset UUID
  *
  * \return Returns TFM_SST_ERR_PERMS_NOT_ALLOWED if the asset can't be deleted
  *         to by this app ID. Returns TFM_SST_ERR_ASSET_REF_INVALID, if asset
  *         no longer exists. Otherwise, TFM_SST_ERR_SUCCESS.
  */
-enum tfm_sst_err_t tfm_sst_veneer_delete(uint32_t app_id,
-                                         uint32_t asset_handle);
+enum tfm_sst_err_t tfm_sst_veneer_delete(uint32_t app_id, uint32_t asset_uuid);
+
 #ifdef __cplusplus
 }
 #endif