--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/drivers/drv_app/ffs/board/ffstrace.c	Fri Oct 16 06:23:26 2020 +0000
@@ -0,0 +1,206 @@
+/******************************************************************************
+ * Flash File System (ffs)
+ * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com
+ *
+ * ffs deprecated testing
+ *
+ * $Id: ffstrace.c 1.32.1.10 Thu, 18 Dec 2003 10:50:52 +0100 tsj $
+ *
+ ******************************************************************************/
+
+#ifndef TARGET
+#include "ffs.cfg"
+#endif
+
+#include "ffs/ffs.h"
+#include "ffs/board/drv.h"
+#include "ffs/board/ffstrace.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+/******************************************************************************
+ * LED control
+ *****************************************************************************/
+
+#if (TARGET == 1)
+
+#include "rvf/rvf_api.h"
+#include "rv/rv_general.h"
+#include "rvm/rvm_use_id_list.h"
+
+static uint8 led_state     =   0;
+static uint8 led_countbits =   0; // number of counter bits
+static uint8 led_mask      = 0x0; // mask containing the counter bits
+
+// configure the number of counter bits in the leds
+void led_config(unsigned char n)
+{
+    led_countbits = (n <= 8 ? n : 0);
+    led_mask      = (n <= 8 ? (1 << n) - 1 : 0);
+}
+
+// just set the bits, no checking whatsoever
+void led_set(unsigned char n)
+{
+    *(char *) 0x2800000 = led_state = n;
+}
+
+void led_counter(unsigned char n)
+{
+    *(char *) 0x2800000 = led_state = led_state & ~led_mask | (n & led_mask);
+}
+
+void led_on(unsigned char n)
+{
+    *(char *) 0x2800000 = led_state = led_state | (1 << (led_countbits + n));
+}
+
+void led_off(unsigned char n)
+{
+    *(char *) 0x2800000 = led_state = led_state & ~(1 << (led_countbits + n));
+}
+// FIXME
+void led_toggle(unsigned char n)
+{
+    *(char *) 0x2700000 = led_state = led_state ^ (1 << (led_countbits + n));
+}
+#endif
+
+
+/******************************************************************************
+ * Target Tracing
+ *****************************************************************************/
+
+#if (TARGET == 1)
+
+static unsigned int ttr_mask = TTrFatal | TTrTest;
+
+void ttr_init(unsigned int mask)
+{
+    ttr_mask = mask | TTrFatal | TTrTest;
+}
+
+void ttr(unsigned int mask, char *format, ...)
+{
+    va_list args;
+    static char buf[256];
+
+    if (ttr_mask & mask)
+    {
+        // build string ala tr() then call str()
+        va_start(args, format);
+        vsprintf(buf, format, args);
+        str(mask, buf);
+        va_end(args);
+    }
+}
+
+void str(unsigned mask, char *string)
+{
+    if (ttr_mask & mask) {
+        rvf_send_trace(string, strlen(string), NULL_PARAM,
+                       RV_TRACE_LEVEL_WARNING, FFS_USE_ID);
+        rvf_delay(5);
+    }
+}
+
+
+/******************************************************************************
+ ** PC side Tracing and logging
+ *****************************************************************************/
+
+#else // (TARGET == 0)
+
+static int tr_mask;    // bitmask of which modules to trace
+
+static int tr_spaces;  // number of spaces to indent per level
+static FILE *tr_fd;    // unused; file descriptor of file to write traces to
+
+
+void tr_init(unsigned int mask, int spaces, char *filename)
+{
+    tr_mask = mask;
+    tr_spaces = spaces;
+
+    if (filename == NULL) {
+        tr_fd = stdout;
+    }
+    else {
+        if ( !(tr_fd = fopen(filename, "a+b")) ) {
+            fprintf(stderr, "failed to open logfile: %s for append\n", filename);
+            exit(1);
+        }
+    }
+}
+
+// Trace/Log the printf-like string if abs(level) > tr_level. If level is
+// negative, the sematics are the same except that no indentation will occur
+void tr(int type, unsigned int mask, char *format, ...)
+{
+    va_list args;
+    int indent;
+    static int indent_level = 0;
+    static char buf[1024];
+    const char spaces[] =
+        "                                        "
+                           "                                        "
+                           "                                        "
+                           "                                        ";
+        
+    if ((mask & tr_mask) == 0)
+        return;
+
+    // If tracing/debugging trace system
+    if ((tr_mask & TrTrace) && (type & TR_END))
+        fprintf(tr_fd, "END(%d)\n", indent_level);
+    
+    if (type & TR_END)
+        indent_level--;
+
+    indent = (type & TR_NULL ? 0 : indent_level);
+
+    if (strlen(format) > 0)
+    {
+        va_start(args, format);
+        vsprintf(buf, format, args);
+        
+        indent = tr_spaces * indent;
+        if (indent < 0) {
+            fprintf(tr_fd, "WARNING: tr() indenting too left (%d)\n",
+                    indent_level);
+            indent = 0;
+        }
+        if (indent > sizeof(spaces) - 1) {
+            fprintf(tr_fd, "WARNING: tr() indenting too right (%d)\n",
+                    indent_level);
+            indent = sizeof(spaces) - 1;
+        }
+        fprintf(tr_fd, "%s%s", &spaces[sizeof(spaces) - 1 - indent], buf);
+        fflush(tr_fd);
+    }
+    if (type & TR_BEGIN)
+        indent_level++;
+
+    // If tracing/debugging trace system
+    if ((tr_mask & TrTrace) && (type & TR_BEGIN))
+        fprintf(tr_fd, "BEGIN(%d)\n", indent_level);
+}
+
+#endif // (TARGET == 0)
+
+
+/******************************************************************************
+ ** Common Tracing and logging
+ *****************************************************************************/
+
+int tr_query(int mask)
+{
+#if (TARGET == 1)
+    return (ttr_mask & mask);
+#else
+    return (tr_mask & mask);
+#endif
+}