From ac7d5ef06a6d6e8d84abbd1f0b82162725f98326 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Thu, 11 May 1995 17:39:37 +0000
Subject: Initial revision

---
 c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c | 171 ++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c

(limited to 'c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c')

diff --git a/c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c b/c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c
new file mode 100644
index 0000000000..a0ec9b7e71
--- /dev/null
+++ b/c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c
@@ -0,0 +1,171 @@
+#define STACK_CHECKER_ON
+/*  bsp_start()
+ *
+ *  This routine starts the application.  It includes application,
+ *  board, and monitor specific initialization and configuration.
+ *  The generic CPU dependent initialization has been performed
+ *  before this routine is invoked.
+ *
+ *  INPUT:  NONE
+ *
+ *  OUTPUT: NONE
+ *
+ *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ *  On-Line Applications Research Corporation (OAR).
+ *  All rights assigned to U.S. Government, 1994.
+ *
+ *  This material may be reproduced by or for the U.S. Government pursuant
+ *  to the copyright license under the clause at DFARS 252.227-7013.  This
+ *  notice must appear in all copies of this file and its derivatives.
+ *
+ *  $Id$
+ */
+
+#include <rtems.h>
+#include <bsp.h>
+#include <libcsupport.h>
+#include <vmeintr.h>
+
+/*
+ *  The original table from the application and our copy of it with
+ *  some changes.
+ */
+
+extern rtems_configuration_table  Configuration;
+rtems_configuration_table         BSP_Configuration;
+
+rtems_cpu_table Cpu_table;
+
+/*      Initialize whatever libc we are using
+ *      called from postdriver hook
+ */
+
+void bsp_libc_init()
+{
+    extern int end;
+    rtems_unsigned32        heap_start;
+
+    heap_start = (rtems_unsigned32) &end;
+    if (heap_start & (CPU_ALIGNMENT-1))
+        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
+
+    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
+
+    /*
+     * Set up for the libc handling.
+     */
+
+    if (BSP_Configuration.ticks_per_timeslice > 0)
+        libc_init(1);                /* reentrant if possible */
+    else
+        libc_init(0);                /* non-reentrant */
+
+    /*
+     *  Initialize the stack bounds checker
+     */
+
+#ifdef STACK_CHECKER_ON
+    Stack_check_Initialize();
+#endif
+}
+
+int bsp_start(
+  int argc,
+  char **argv,
+  char **environp
+)
+{
+  m68k_isr *monitors_vector_table;
+  int       index;
+  void     *vbr;
+
+  monitors_vector_table = (m68k_isr *)0;   /* Monitor Vectors are at 0 */
+  m68k_set_vbr( monitors_vector_table );
+
+  for ( index=2 ; index<=255 ; index++ )
+    M68Kvec[ index ] = monitors_vector_table[ 32 ];
+
+  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
+  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
+  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
+
+  /*
+   *  Uncommenting this seems to confuse/break the monitor on this board.
+   *  It probably assumes the vector table is at 0.
+   */
+
+  /* m68k_set_vbr( &M68Kvec ); */
+
+  /*
+   *  Adjust the VMEbus mode to round-robin.
+   */
+
+  /*
+   *  This is only apparent with the shared memory driver which has not
+   *  yet been supported on this target.
+   */
+
+  m68k_enable_caching();
+
+  /*
+   *  we only use a hook to get the C library initialized.
+   */
+
+  Cpu_table.pretasking_hook = NULL;
+
+  Cpu_table.predriver_hook = bsp_libc_init;  /* RTEMS resources available */
+
+  Cpu_table.postdriver_hook = NULL;   /* Call our main() for constructors */
+
+  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
+
+  Cpu_table.do_zero_of_workspace = TRUE;
+
+  m68k_get_vbr( vbr );
+  Cpu_table.interrupt_vector_table = vbr;
+
+  Cpu_table.interrupt_stack_size = 4096;
+
+  Cpu_table.extra_system_initialization_stack = 0;
+
+  /*
+   *  Copy the table
+   */
+
+  BSP_Configuration = Configuration;
+
+  BSP_Configuration.work_space_start = (void *)
+     (RAM_END - BSP_Configuration.work_space_size);
+
+  /*
+   * Add 1 region for Malloc in libc_low
+   */
+
+  BSP_Configuration.maximum_regions++;
+
+  /*
+   * Add 1 extension for newlib libc
+   */
+
+#ifdef RTEMS_NEWLIB
+    BSP_Configuration.maximum_extensions++;
+#endif
+
+  /*
+   * Add another extension if using the stack checker
+   */
+
+#ifdef STACK_CHECKER_ON
+    BSP_Configuration.maximum_extensions++;
+#endif
+
+  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
+  /* does not return */
+
+  /* Clock_exit is done as an atexit() function */
+
+  VME_interrupt_Disable( 0xff );
+
+  /* return like a "normal" subroutine to the monitor */
+  return 0;
+}
-- 
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