--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/drivers/drv_app/ffs/board/task.h	Fri Oct 16 06:23:26 2020 +0000
@@ -0,0 +1,138 @@
+/******************************************************************************
+ * Flash File System (ffs)
+ * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com
+ *
+ * ffs task
+ *
+ * $Id: task.h 1.23.1.17 Wed, 29 Oct 2003 12:54:27 +0100 tsj $
+ *
+ ******************************************************************************/
+
+#if (TARGET == 1)
+#include "ffs.cfg"
+#include "rvf/rvf_api.h"
+#endif
+
+#include "ffs/ffs.h"
+
+
+#define OS_FREE(addr) rvf_free_buf(addr)
+#define OS_MAIL_WAIT(event) rvf_wait(event, 0)
+#define OS_MAIL_READ() rvf_read_mbox(RVF_TASK_MBOX_0)
+#define OS_MAIL_SEND(dest, data) rvf_send_msg(dest, data);
+#define OS_DELAY(time) rvf_delay(time)
+#define OS_CREATE_TASK rvf_create_task
+
+#define OS_OK RV_OK
+#define OS_TASK_MBOX_0 RVF_TASK_MBOX_0
+#define OS_MAIL_EVENT_MASK RVF_TASK_MBOX_0_EVT_MASK
+#define T_OS_MB_ID T_RVF_MB_ID
+
+/******************************************************************************
+ * Globals
+ ******************************************************************************/
+
+extern T_OS_MB_ID ffs_mb_id;
+extern UINT16	  ffs_addr_id;
+void ffs_task(void);
+
+/******************************************************************************
+ * Macros
+ ******************************************************************************/
+
+#define MSG_ALLOC(mail) if ((rvf_get_buf(ffs_mb_id, sizeof(struct ffs_req_s), \
+                                         (T_RVF_BUFFER*) &mail)) == RVF_RED) { \
+                                  return EFFS_MEMORY; \
+                        }
+
+#define MSG_SEND(mail)  if (rvf_send_msg(ffs_addr_id, mail)) { \
+                            return EFFS_MSGSEND; \
+                        } 
+	                   
+
+#define FFS_BLOCKING_CALL_BEGIN() \
+    int result, error; \
+    struct ffs_blocking_s fb; \
+    T_RVF_MUTEX mutex; \
+    if ((error = ffs_b_begin(&fb, &mutex, &result)) < 0) \
+        return error;
+
+// The result variable contains the output from the ffs_xx_b()
+// function. After the requested task has been executed is the contents in
+// result replaced with the output from that task
+#define FFS_BLOCKING_CALL_END() \
+     if ((error = ffs_b_end(&mutex, result)) < 0) \
+        return error;
+
+/******************************************************************************
+ * Target Platform Abstraction Functions
+ ******************************************************************************/
+
+req_id_t request_id_get(void);
+void *target_malloc(unsigned int size);
+
+
+/******************************************************************************
+ * Types
+ ******************************************************************************/
+
+// In and output variables to blocking functions
+struct ffs_blocking_s {
+    int *result;
+    T_RVF_MUTEX *mutex;
+};
+
+// Structure of operation request mail sent from targetffs.c to FFS task.
+struct ffs_req_s {
+	T_RV_HDR   header;
+    const char *path;
+    char       *src;
+    int        size;
+    uint16     value16;
+    req_id_t   request_id;
+    char       cmd;
+    fd_t       fdi;
+    T_RV_RETURN *cp;
+    struct ffs_blocking_s *fb;
+};
+
+// NOTEME: should we use the indices from tmffs.h instead?
+typedef enum FFS_REQ_CMD {
+    NOP = 0,
+    PREFORMAT,
+    FORMAT,
+    FILE_WRITE,
+    REMOVE,
+    RENAME,
+    MKDIR,
+    SYMLINK,
+    FCONTROL,
+    OPEN,
+    WRITE,
+    CLOSE,
+    SEEK,
+    TRUNC,
+    FTRUNC,
+    FDATASYNC
+} ffs_req_e;
+
+effs_t task_file_write(struct ffs_req_s *req);
+effs_t task_symlink(struct ffs_req_s *req);
+effs_t task_format(struct ffs_req_s *req);
+effs_t task_preformat(struct ffs_req_s *req);
+effs_t task_mkdir(struct ffs_req_s *req);
+effs_t task_remove(struct ffs_req_s *req);
+effs_t task_fcontrol(struct ffs_req_s *req);
+effs_t task_rename(struct ffs_req_s *p);
+fd_t   task_open(struct ffs_req_s *req);
+int    task_write(struct ffs_req_s *req);
+effs_t task_close(struct ffs_req_s *req);
+int    task_seek(struct ffs_req_s *req);
+effs_t task_trunc(struct ffs_req_s *req);
+effs_t task_ftrunc(struct ffs_req_s *req);
+effs_t task_fdatasync(struct ffs_req_s *req);
+
+effs_t ffs_b_begin(struct ffs_blocking_s *fb, T_RVF_MUTEX *mutex, int *result); 
+effs_t ffs_b_end(T_RVF_MUTEX *mutex, int result); 
+void target_free(void *buf); 
+