--- a/chipsetsw/layer1/dl1/dl1_com.c	Mon Jun 06 21:36:31 2016 +0000
+++ b/chipsetsw/layer1/dl1/dl1_com.c	Tue Jun 07 04:59:26 2016 +0000
@@ -1,1 +1,282 @@
-/* dummy C source file */
+/*
+ * This module contains the LISR and HISR glue functions for L1
+ * which used to be in the dl1_com module in the Leonardo version.
+ * The LoCosto source from which we got our L1 code no longer has a
+ * dl1_com.c module, and the ISR glue functions in question have been
+ * moved into csw-system/init_common/init.c - an incredibly messy C
+ * module that is mostly devoted to LoCosto BSP initialization.
+ *
+ * The present C code has been extracted from LoCosto's init.c,
+ * guided by the disassembly of dl1_com.obj from the Leonardo version.
+ */
+
+#include "config.h"
+#include "sys_types.h"
+#include "../../riviera/rv/general.h"
+#include "../../nucleus/nucleus.h"
+
+/* Include Files */
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "l1_types.h"
+#include "l1_confg.h"
+#include "l1_const.h"
+
+#if TESTMODE
+  #include "l1tm_defty.h"
+#endif // TESTMODE
+
+#if (AUDIO_TASK == 1)
+  #include "l1audio_const.h"
+  #include "l1audio_cust.h"
+  #include "l1audio_defty.h"
+#endif // AUDIO_TASK
+
+#if (L1_GTT == 1)
+  #include "l1gtt_const.h"
+  #include "l1gtt_defty.h"
+#endif
+
+#if (L1_MP3 == 1)
+  #include "l1mp3_defty.h"
+#endif
+
+#if (L1_MIDI == 1)
+  #include "l1midi_defty.h"
+#endif
+
+#if (L1_AAC == 1)
+  #include "l1aac_defty.h"
+#endif
+#if (L1_DYN_DSP_DWNLD == 1)
+  #include "l1_dyn_dwl_defty.h"
+#endif
+
+#if (TRACE_TYPE == 4)
+  #include "l1_defty.h"
+#endif
+
+#include "../../bsp/armio.h"
+#include "../../bsp/timer.h"
+
+#include "../../bsp/iq.h"
+#include "../../bsp/mem.h"
+#include "../../bsp/clkm.h"
+#include "../../bsp/inth.h"
+
+/*
+ * The function that sets up the HISRs has an assert() macro call in it.
+ * The Leonardo version was built with the TMS470 compiler's C library
+ * version of assert() in it, which is not very useful.  Here I am
+ * pulling in some GPF/VSI headers so we get the more useful GPF/VSI
+ * version of assert() instead.
+ */
+#include "../../gpf/inc/typedefs.h"
+#include "../../gpf/inc/vsi.h"
+#include "../../gpf/inc/cust_os.h"
+
+/*
+ * Timing monitor
+ */
+#if (TRACE_TYPE == 4)
+  extern T_L1A_L1S_COM l1a_l1s_com;
+  extern T_L1S_GLOBAL  l1s;
+  UNSIGNED             max_cpu, fn_max_cpu;
+  unsigned short       layer_1_sync_end_time;
+  unsigned short       max_cpu_flag;
+  #if (DSP >= 38)
+  // DSP CPU load measurement trace variables
+  UWORD32              dsp_max_cpu_load_trace_array[4];
+  UWORD32              dsp_max_cpu_load_idle_frame;
+  unsigned short       l1_dsp_cpu_load_trace_flag;
+  #endif
+#endif
+
+#define	STACK_SECTION	__attribute__ ((section ("int.ram")))
+
+#if (L1_EXT_AUDIO_MGT == 1)
+  NU_HISR  EXT_AUDIO_MGT_hisr;
+  char FAR ext_audio_mgt_hisr_stack[500] STACK_SECTION;
+  extern void Cust_ext_audio_mgt_hisr(void);
+#endif
+
+#if ( (L1_MP3 == 1) || (L1_MIDI == 1) || (L1_AAC == 1) || (L1_DYN_DSP_DWNLD == 1) )   // equivalent to an API_HISR flag
+  extern void api_hisr(void);
+  char FAR API_HISR_stack[0x400] STACK_SECTION;
+  NU_HISR apiHISR;
+#endif // (L1_MP3 == 1) || (L1_MIDI == 1) || (L1_DYN_DSP_DWNLD == 1)
+
+#if (FF_L1_IT_DSP_USF == 1) || (FF_L1_IT_DSP_DTX == 1)
+  char FAR API_MODEM_HISR_stack[0x400] STACK_SECTION; // stack size to be tuned
+  NU_HISR api_modemHISR;
+#endif // FF_L1_IT_DSP_USF
+
+/*
+ * HISR stack and semaphore needed by L1
+ */
+#if (OP_L1_STANDALONE == 0)
+  #define LAYER_1_SYNC_STACK_SIZE	4000	/* matching Leonardo version */
+  unsigned char layer_1_sync_stack[LAYER_1_SYNC_STACK_SIZE] STACK_SECTION;
+#else
+  #if TESTMODE
+    char FAR layer_1_sync_stack[2600 /*3600*/];   // Frame interrupt task stack for EVA3
+  #else
+    char FAR layer_1_sync_stack[1600 /* 2600 */];   // Frame interrupt task stack for EVA3
+  #endif
+#endif   /* OP_L1_STANDALONE */
+
+NU_HISR  layer_1_sync_HISR;    // Frame interrupt task stack for EVA3
+
+/* forward declaration */
+void layer_1_sync_HISR_entry (void);
+
+/*
+ * l1_create_HISR
+ *
+ * Create L1 HISR.  This function is called from l1_pei.
+ *
+ * Apparently this function was originally called l1_create_ISR(),
+ * as that is how it appears in the Leonardo dl1_com.obj module.
+ * The LoCosto version originally had an l1_create_ISR() wrapper
+ * that simply calls l1_create_HISR(), but I plan on changing
+ * l1_pei to call l1_create_HISR() instead. -- Space Falcon
+ */
+void l1_create_HISR (void)
+{
+  STATUS status;
+
+  #if (OP_L1_STANDALONE == 0)
+    // Fill the entire stack with the pattern 0xFE
+    memset (layer_1_sync_stack, 0xFE, LAYER_1_SYNC_STACK_SIZE);
+  #endif
+
+  status = NU_Create_HISR (&layer_1_sync_HISR,
+                           "L1_HISR",
+                           layer_1_sync_HISR_entry,
+  #if (OP_L1_STANDALONE == 0)
+                           1,
+                           layer_1_sync_stack,
+                           LAYER_1_SYNC_STACK_SIZE);
+  #else
+                           1,
+                           layer_1_sync_stack,
+                           sizeof(layer_1_sync_stack));
+  #endif
+
+  #if (L1_EXT_AUDIO_MGT)
+    // Create HISR for Ext MIDI activity
+    //==================================
+    status += NU_Create_HISR(&EXT_AUDIO_MGT_hisr,
+                             "H_EXT_AUDIO_MGT",
+                             Cust_ext_audio_mgt_hisr,
+                             2,
+                             ext_audio_mgt_hisr_stack,
+                             sizeof(ext_audio_mgt_hisr_stack));
+  #endif
+
+  #if ( (L1_MP3 == 1) || (L1_MIDI == 1) || (L1_AAC == 1) || (L1_DYN_DSP_DWNLD == 1) )    // equivalent to an API_HISR flag
+    status += NU_Create_HISR(&apiHISR,
+                             "API_HISR",
+                             api_hisr,
+                             2,
+                             API_HISR_stack,
+                             sizeof(API_HISR_stack));
+  #endif // (L1_MP3 == 1) || (L1_MIDI == 1) || (L1_AAC == 1) || (L1_DYN_DSP_DWNLD == 1)
+
+  #if (FF_L1_IT_DSP_USF == 1) || (FF_L1_IT_DSP_DTX == 1) // equivalent to an API_MODEM_HISR flag
+    // Create HISR for USF  DSP interrupt !!!!. This HISR needs
+    // to have the highest priority since the USF status needs
+    // to be known before the next block starts.
+    //========================================================
+    status += NU_Create_HISR(&api_modemHISR,
+                             "MODEM",
+                             api_modem_hisr,
+                             1,
+                             API_MODEM_HISR_stack,
+                             sizeof(API_MODEM_HISR_stack));
+  #endif
+
+  assert (status == 0);
+}
+
+/*
+ * The versions of TP_FrameIntHandler() and layer_1_sync_HISR_entry()
+ * in the Leonardo dl1_com.obj module contain CPU load measurement
+ * code, but in the LoCosto version of L1 which we are using this
+ * functionality has been moved into L1S proper, i.e., inside the
+ * hisr() function.
+ */
+
+/*-------------------------------------------------------*/
+/* TP_FrameIntHandler() Low Interrupt service routine    */
+/*-------------------------------------------------------*/
+/* Parameters :                                          */
+/* Return     :                                          */
+/* Functionality :  activate Hisr on each frame interrupt*/
+/*-------------------------------------------------------*/
+void TP_FrameIntHandler(void)
+{
+
+  #if (OP_L1_STANDALONE == 1)
+
+    #if (TRACE_TYPE==1)
+       if (trace_info.current_config->l1_dyn_trace & 1<<L1_DYN_TRACE_L1S_CPU_LOAD)
+       {
+         TM_ResetTimer (2, 0xFFFF, 1, 0);
+         TM_StartTimer (2);
+       }
+    #endif
+
+    #if (TRACE_TYPE==6)
+       TM_ResetTimer (2, 0xFFFF, 1, 0);
+       TM_StartTimer (2);
+    #endif
+
+    #if (TRACE_TYPE==7)   /* CPU_LOAD */
+       l1_cpu_load_start();
+    #endif
+
+  #else
+
+     #if (TRACE_TYPE == 4) && (TI_NUC_MONITOR != 1) && (WCP_PROF == 1)
+              TM_ResetTimer (2, TIMER_RESET_VALUE, 1, 0);
+              TM_StartTimer (2);
+    #endif
+
+    #if (TI_NUC_MONITOR == 1)
+       /* Copy LISR buffer in Log buffer each end of HISR */
+       ti_nuc_monitor_tdma_action();
+    #endif
+
+    #if WCP_PROF == 1
+       prf_LogFNSwitch(l1s.actual_time.fn_mod42432);
+    #endif
+
+  #endif   /* OP_L1_STANDALONE */
+
+  NU_Activate_HISR(&layer_1_sync_HISR);   /* Activate HISR interrupt */
+
+  #if (OP_L1_STANDALONE == 0)
+    #if (WCP_PROF == 1)
+      #if (PRF_CALIBRATION == 1)
+      NU_Activate_HISR(&prf_CalibrationHISR);
+      #endif
+    #endif
+  #endif
+
+}
+
+/*
+ * layer_1_sync_HISR_entry
+ *
+ * HISR associated to layer 1 sync.
+ */
+
+void layer_1_sync_HISR_entry (void)
+{
+   // Call Synchronous Layer1
+   hisr();
+}