source: rtems/c/src/lib/libbsp/mips/genmongoosev/startup/bspstart.c @ 2cdde6d

4.104.114.84.95
Last change on this file since 2cdde6d was 2cdde6d, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 16, 2001 at 8:03:31 PM

2001-04-16 Joel Sherrill <joel@…>

  • start/start.S, startup/bspstart.c, startup/linkcmds: Cleanup that was not merged from the simple non-RTEMS program.
  • Property mode set to 100644
File size: 2.7 KB
Line 
1/*
2 *  This routine starts the application.  It includes application,
3 *  board, and monitor specific initialization and configuration.
4 *  The generic CPU dependent initialization has been performed
5 *  before this routine is invoked.
6 *
7 *  COPYRIGHT (c) 1989-2001.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.OARcorp.com/rtems/license.html.
13 *
14 *  $Id$
15 */
16
17#include <string.h>
18
19#include <bsp.h>
20#include <rtems/libio.h>
21#include <rtems/libcsupport.h>
22#include <libcpu/mongoose-v.h>
23
24/*
25 *  The original table from the application and our copy of it with
26 *  some changes.
27 */
28
29extern rtems_configuration_table Configuration;
30
31rtems_configuration_table  BSP_Configuration;
32
33rtems_cpu_table Cpu_table;
34
35char *rtems_progname;
36
37/*
38 *  Use the shared implementations of the following routines
39 */
40 
41void bsp_postdriver_hook(void);
42void bsp_libc_init( void *, unsigned32, int );
43
44/*
45 *  Function:   bsp_pretasking_hook
46 *  Created:    95/03/10
47 *
48 *  Description:
49 *      BSP pretasking hook.  Called just before drivers are initialized.
50 *      Used to setup libc and install any BSP extensions.
51 *
52 *  NOTES:
53 *      Must not use libc (to do io) from here, since drivers are
54 *      not yet initialized.
55 *
56 */
57 
58void bsp_pretasking_hook(void)
59{
60    extern int   HeapBase;
61    extern int   HeapSize;
62    void         *heapStart = &HeapBase;
63    unsigned long heapSize = (unsigned long)&HeapSize;
64
65    bsp_libc_init(heapStart, (unsigned32) heapSize, 0);
66
67#ifdef RTEMS_DEBUG
68    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
69#endif
70}
71 
72/*
73 *  bsp_start
74 *
75 *  This routine does the bulk of the system initialization.
76 */
77
78void bsp_start( void )
79{
80  extern int _end;
81  extern int WorkspaceBase;
82  extern int _RamSize, _RamBase;
83  int ram_left;
84
85  ram_left = (unsigned32) &_RamSize - 
86             (unsigned32)&WorkspaceBase - (unsigned32) &_RamBase;
87
88  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
89  Cpu_table.postdriver_hook = bsp_postdriver_hook;
90  Cpu_table.interrupt_stack_size = 4096;
91
92  if ( BSP_Configuration.work_space_size >  ram_left )
93    _sys_exit( 1 );
94
95  BSP_Configuration.work_space_start = (void *) &WorkspaceBase;
96
97  /* Clear all pending peripheral interrupts and mask them. */
98   
99  MONGOOSEV_WRITE( MONGOOSEV_PERIPHERAL_FUNCTION_INTERRUPT_CAUSE_REGISTER, 0 );
100  MONGOOSEV_WRITE( MONGOOSEV_PERIPHERAL_FUNCTION_INTERRUPT_MASK_REGISTER, 0 );
101
102  /*
103   *  Enable coprocessors.
104   *  Disable external interrupts.
105   *  Enable software interrupts.
106   */
107
108  mips_set_sr( (SR_CU0 | SR_CU1 | SR_IBIT1 | SR_IBIT2) );
109
110  mips_install_isr_entries();
111}
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