source: rtems/c/src/lib/libbsp/mips64orion/p4000/startup/bspstart.c @ 08311cc3

4.104.114.84.95
Last change on this file since 08311cc3 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 3.0 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) 1989-1999.
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/*
18 *  Rather than deleting this, it is commented out to (hopefully) help
19 *  the submitter send updates.
20 *
21 *  static char _sccsid[] = "@(#)bspstart.c 06/11/96     1.2\n";
22 */
23
24
25#include <bsp.h>
26#include <rtems/libio.h>
27 
28#include <libcsupport.h>
29 
30#include <string.h>
31 
32/*
33 *  The original table from the application and our copy of it with
34 *  some changes.
35 */
36
37extern rtems_configuration_table Configuration;
38
39rtems_configuration_table  BSP_Configuration;
40
41rtems_cpu_table Cpu_table;
42
43char *rtems_progname;
44
45/*
46 *  Use the shared implementations of the following routines
47 */
48 
49void bsp_postdriver_hook(void);
50void bsp_libc_init( void *, unsigned32, int );
51
52/*
53 *  Function:   bsp_pretasking_hook
54 *  Created:    95/03/10
55 *
56 *  Description:
57 *      BSP pretasking hook.  Called just before drivers are initialized.
58 *      Used to setup libc and install any BSP extensions.
59 *
60 *  NOTES:
61 *      Must not use libc (to do io) from here, since drivers are
62 *      not yet initialized.
63 *
64 */
65 
66#define LIBC_HEAP_SIZE (64 * 1024)
67
68void bsp_pretasking_hook(void)
69{
70    extern int end;
71    rtems_unsigned32        heap_start;
72
73    heap_start = (rtems_unsigned32) &end;
74    if (heap_start & (CPU_ALIGNMENT-1))
75        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
76
77    bsp_libc_init((void *) heap_start, LIBC_HEAP_SIZE, 0);
78
79#ifdef RTEMS_DEBUG
80    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
81#endif
82}
83 
84extern int end; /* defined by linker */
85
86/*
87 *  bsp_start
88 *
89 *  This routine does the bulk of the system initialization.
90 */
91
92void bsp_start( void )
93{
94  /*
95   *  Allocate the memory for the RTEMS Work Space.  This can come from
96   *  a variety of places: hard coded address, malloc'ed from outside
97   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
98   *  typically done by stock BSPs) by subtracting the required amount
99   *  of work space from the last physical address on the CPU board.
100   */
101
102  /*
103   *  Need to "allocate" the memory for the RTEMS Workspace and
104   *  tell the RTEMS configuration where it is.  This memory is
105   *  not malloc'ed.  It is just "pulled from the air".
106   */
107
108  BSP_Configuration.work_space_start =
109       (void *)((unsigned64)((&end) + LIBC_HEAP_SIZE + 0x2000) & ~0x7);
110
111  /*
112   *  initialize the CPU table for this BSP
113   */
114
115  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
116  Cpu_table.postdriver_hook = bsp_postdriver_hook;
117  Cpu_table.interrupt_stack_size = 4096;
118  Cpu_table.clicks_per_microsecond = CPU_CLOCK_RATE_MHZ;
119}
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